Talk:Derecho - Knowledge

1399:

American derecho was due to people objecting to power companies trimming trees, as happened in Maryland, where power outages are/were most severe. I don't have a reference to add in support, as I heard it on the radio a couple of days ago, but this should be easy enough to verify. Power companies don't leave trees up that could fall on lines and destroy them, because subsequent repair is expensive and when customers don't have power, they aren't generating revenue. To imply otherwise is just plain stupid. I live in Pacific Gas & Electric (PG&E) territory on the U.S. west coast, and I see constant tree trimming and removal going on under and near power lines. We don't hear much about trees shorting out power lines in this area, even in the most severe winter storms; outages are more often caused by someone crashing into a power pole or a transformer failing. —

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wind momentum being carried down to the surface, and downburst winds lining up with the ambient near-surface winds, thus giving additive velocity to the derecho winds. My own observation (which won't fly as authoritive on its own of course) is that "true" derechos (usually referred to as "progressive") occur where a low or mid level warm-sector jet hits a frontal boundary. The frontal lifting, plus the buoyancy of the warm air, plus the momentum of the low level jet creates the large thunderstorm complex. The combining and linearity of the downbursts is imposed by the linearity of ambient winds along the frontal boundary at all levels, and maximized at the level of the upper jet. All these ingredients tend to come together just about this time of year in the northern tier states. Oh well, maybe a licensed expert can jump in and verify.

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storms, allowing the gust front to maintain its strength. As this cold pool increases in size and elongates in the direction of the mean wind, it may induce an inflow of air known as the "rear-inflow jet" (dashed brown arrow in figure below) on the trailing side of the thunderstorm complex. This causes the updraft to tilt toward the rear side of the storm (i.e., to the left in figure 2). Tilting of the updraft allows the thunderstorm to further expand, increasing the aerial coverage of the rain. This, in turn, adds to the pool of cold air accumulating beneath the storm and strengthens the gust front, causing it to bow outward in the downwind direction. The resulting acceleration in forward motion of the gust front subsequently forces more warm, moist air upward, creating still more storms, and the process repeats.

1099:"Derecho" was chosen in 1886, because the person who coined the term believed the then-commonly accepted etymology of the word "tornado" as being derived from the Spanish "tornar," meaning "to turn." Since the phenomenon he was describing did tornado-like damage over a vast area through straightline (as opposed to rotating) winds, he used the Spanish word for "straight" to describe it. The NWS has a specific definition of derecho; not all squall lines qualify as derechoes (they need to generate winds of 58 miles per hour or more over a distance of at least 250 miles), and not all derechoes form actual squall lines. The gust front is a component of the storm, not the storm itself. This is similar to the difference between a tornado, a 1080:

terms. Another term used in English, also cross-referenced, is "gust front". There doesn't seem to be a reason for it, except to appeal to Spanish-speakers using the media to inform themselves of the event (i. e. political correctness in the media). Even better, wikipedia says that a "derecho" in Pakistan is called a "Nor'easter." I have nothing against the use of a Spanish word where no English word will do, but here, English words have been in use for centuries and should be perfectly acceptable. I question the need for a separate article. Why not just add "also known as a 'derecho'" to the article on "squall line"? Has NOAA said that "derecho" is their preferred term for this?

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in direction with height). As the rain-cooled downdraft of a thunderstorm reaches the earth's surface, it spreads horizontally, most rapidly in the direction of the mean tropospheric flow. As the cool, dense air spreads outward, it forces the lighter, warm and moist air surrounding the storm up along the leading edge of the outflow, or gust front (see figure 1.), with mean flow assumed to be from left to right). The upward motion along the gust front typically is greatest along that part of the front that is moving most rapidly, that is, in the downwind direction (to the right in figure 1). Gust fronts often are marked by a band of ominous, low clouds known as "arcus."

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At this point, the convective system typically exhibits a pronounced bow shape on radar (figure 3), with an area of moderate to occasionally heavy rain located near the center of the cold pool, well behind the arc of intense rain immediately behind the gust front. As long as the thermodynamic and kinematic environment support the continued development of new thunderstorms along the advancing gust front, the convective complex will persist, along with the potential for downbursts and microbursts.

1131:=58 MPH winds) is a derecho. Straight does not refer to the shape of the storm, but rather to the direction of the winds which blow straight out away from the storm. Not only that, but the derecho is actually the gust front which blows along the front edge of the derecho, composed of hundreds of downbursts. The bow echo is a feature which supports downbursts and indicates them on radar, similar to the relationship between a mesocyclone/tornado vortex signature and a tornado itself. 101: 449:

upper winds may diverge ("split") because they're forced to by the strong updraft of the MSC from which derechos may develop, i.e. a result, not a cause. The essential cause of a derecho is a storm that produces many downbursts which eventually merge into a single windstream. The type of MSC that can produce these multiple downbursts is one where there is little shear through the atmosphere. With shear, the result is tornadic. Without, a derecho.

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few cases of derechos with impressive embedded mesolows, but it's not our place to decide whether they represent anything "super". Seeing as there is really no suitable title for an article discussing hurricane-like MCSs, I think it's best to house the minimal descriptive info on landphoons, etc. the main derecho article; specific case studies are better handled in individual storm event articles. –

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pictures on local tv websites of the storms moving across the state are similar to the pics in this article. Radar now shows the storms have moved over Alabama and another system with the same configuration over the Dallas area - which seems to be headed this way. I don't know if the storms today meet all of the criteria but I would rather not see one again whatever it's called.

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on, does that fit the scope of the Derecho article? A better place for this information would be within the Pepco article or perhaps an article about wind damage or even the article about the most recent derecho. I believe it is beyond the scope of this article, and is verging on undue weight. If it is decided to keep this information, it needs to be trimmed back.

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separating the downdraft from the storm-related inflow. Its forward motion is caused by the downburst/downdrafts in its rear...which would be helped out by mid-level dry air. All severe weather seems to be caused by these ingredients...it's just a question of the relative contributions of helicity/wind shear and bouyancy, it seems.

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phenomenon, but the word isn't used much. (More evidence in that my spelling checker is rejecting it.) Seems like most weather reports have used sloppy (or at least vague) terms like "line of storms" or "weather system" to describe such events? It's kind of a meta-topic, but the Article as I read it didn't seem to help much.

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with the Characteristics section of this page. Near as I can tell, there is very little literature on super-derechos as a phenomena (at least as the wiki article defined them), or on "landphoons", "inland hurricanes", or any of the other names by which the aforementioned article has gone. There are a

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The rain produced by the newer storms reinforces the cold pool, strengthening the inflow of air from the back side of the developing storm complex and encouraging the downward transport of higher momentum air from aloft. These processes can enable the system to attain a nearly steady-state condition.

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First heard the term Derecho today describing the storms moving through Arkansas. The description of Derecho fits what hit - the speed of the storm was amazing - and we have damage and power outages state wide from the winds which peaked at 60-70 mph, reports of possible tornadoes, rain and hail. The

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Derecho development necessarily is tied to the formation of bow echoes. A bow echo usually arises from a cluster of thunderstorms, but also may evolve from a single strong storm. Bow echoes most frequently occur when tropospheric winds are relatively strong and unidirectional (i.e., they vary little

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I can't find it, but on the NWS site for Paducah, Kentucky, there is a radar image of the storm that ripped through Kansas to Southern Illinois a couple weeks ago - as far as I know it was a Derecho, the radar image shows a defined eye and two arms, kinda like a galaxy. I was in Illinois and it was

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I wouldn't call El Nino (or Derecho) a "hokey spanishesque" term or a buzzword. Just because the public has only recently become aware of the term (and the phenomenon it describes), doesn't mean the term is somehow contrived or irrelevant. Every field of science has jargon that probably sounds silly

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Hum! These cities were hit three times, July 7 1991, July 13 1995 & May 31, 1998 very hard (and actually the second labor day derecho in 98 started in that area too, so it could very well be four). So I guess Detroit has detrone St-Louis and Grand Rapids. Also the Ottawa-Gatineau region(although

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I don't disagree with that. What I do challenge is the proposition that a JET SPLIT is key. Derechos do seem to form most often along stationary fronts ahead of an upper level trough where the upper winds are diverging, and where a low to mid level warm jet feeds into the divergence. That's upper

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Ten years on and the Landphoon term is a redirect to this article - and this still seems to be about America and the spanish term - yet landphoons exist in Australia and have been identified as such - the question is - a separate article for beyond the American context ? - or an imporvement of this

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During the cold season within the Northern Hemisphere, derechos generally develop within a pattern of southwesterly winds at mid levels of the troposphere in an environment of low to moderate atmospheric instability (caused by heat and moisture near ground level or cooler air moving in aloft. Warm

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Whoever is putting this crap in the article is obviously an anti-business Luddite or Marxist ideologue, using every opportunity they can to take gratuitous digs at private enterprise. I've modified the paragraph to indicate that most of the damage to the power infrastructure of the June 2012 North

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I made some edits to wikilink more of the terms in the lead to help out, and made one wording change. Someone better able to convert jargon to lay speak would be able to help out more here. GAN, peer review, and FAC will hopefully address this concern, because it won't become a Good Article if it

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We weather forecasters are in no way trying to "spanishize" anything. A derecho is a subtype of bow echo which in turn is a subtype of squall line. Any line of showers or thunderstorms accompanied by any wind is a squall line. Any squall line in the shape of a bow is a bow echo. However, only a bow

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Is this along the lines of "El Nino", some hokey spanishesque weather term that went from unknown to a news buzzword? Sure, the NOAA has a "history" page saying the term goes back to 1888, but how widespread is the actual use? Ever been in print? Any news reporter use it more than 10 years ago? All

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We had a derecho here in Wichita Falls last week. The local paper carried a couple of stories about the term and the kind of storm for which it is used. It seems that not only are derechos themselves rare, but term is rare as well. If it is a technical or field-specific term in meteorology, then

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The reference I added indicates that the term is used almost exclusively for storms in North America. Even if the phenomenon does occur elsewhere, it's called something different and so isn't really under the perogative of this article. A short "Other derecho-like weather" section may be all that's

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The development of a thunderstorm's downdraft ordinarily marks the dissipation stage of that particular storm. But air forced up along a gust front can give birth to new thunderstorms. As new storms mature, the rain they produce reinforces the existing "pool" of rain-cooled air produced by earlier

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Now that the article is getting over 100,000 hits per day, which will likely subside soon, there are some interesting things creeping in which occasionally have to get thrown into a better article. I agree that Pepco is way lax on tree trimming in MD (and have been since at least 2001)...but come

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The statement is made at least twice in the article that a jet stream split is critical to the formation of a derecho. Without an authoritative citation, that's gonna have to go. In fact, the jet stream splits all the time without a derecho forming, in many places across the globe. In fact, the

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If 2 separate bow echos separately produce damaging winds for 250 miles and merge after that forming a multi-bow serial derecho, is it 1 derecho (the sum of all), 2 derechos (the 2 original, doesn't matter that they combined later) or 3 derechos (because each met the criteria individually and the

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It seems, from looking at the cross-references, that the usual term in English is "squall line" and there is a kind of squall line that forms a "bow echo", and the use of the term "derecho" is an attempt to Spanishize (and incidentally, misname, because the bow echo is curved, not straight) these

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My first reaction: Why did a brilliant German/Danish immigrant in Iowa in the 1880s when Iowa was largely populated by people of Scandinavian and German descent and the nearest Spanish-speaker was llikely in Texas use a Spanish word to describe this phenomenon? If a quick footnote or mention of

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25 m/s winds. I know NWA/AMS journals and U.S. NWS guidelines follow that but I can't find a web citation. It's a pretty important point because for all intents and purposes what is and isn't a "derecho" is much more of an academic point than one of meteorological significance. I figured I would

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Yeah, I meant MCC (mesocyclone complex). The fingers typed too fast. Sure, it's matter of comparative shear. In a tornadic setup, it's tremendous. There may be some in the derecho setups, but nowhere near the same degree, hence the linearity of the winds. The sources I've seen refer to upper

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MSC? Is that similar to MCS? (serious question, not baiting) Notice I'm not a member of the severe weather project, even if I help improve severe articles to GA or FA from time to time. The references I'm finding imply you can have significant shear with derechos, particularly during the cold

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I'm not an expert in spanish, but I'm fairly certain that to make spanish words plural in most cases you just add an "s" and NOT "es." For example, the plural of libro (book) is libros. Should probably wait for someone who has taken more than three years of high school spanish to confirm this

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My curiosity into the word "derecho" was piqued by a news story today, and the focus of my curiosity was why I've never heard of the term before. This entry in the Talk page indicates a similar situation 12 years ago? This page and the linked list of "derecho events" indicates it isn't a rare

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That doesn't sound terribly different than the sources I've read so far. The low-level jet causes the high amounts of moisture tapped, the systems form in an environment of warm air advection near a boundary (frontal or mesoscale), and vertical wind shear helps to organize the convection by

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to a layperson. This jargon is necessary for scientists to communicate efficiently with each other. I fully support exposing non-scientists to these terms. Sure, maybe most people will obnoxiously overuse the term for a few months, but hopefully a few will gain lasting knowledge.

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It means “right” as in “your rights” (law) or “do what's right” (correct), as well as the direction “to the right”. Nothing about it means “straight”, but rather English's usage of “right” to for correct which straight can be a synonym in that sense, but not direction-wise. --

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season. It depends what you mean by little shear. If it's too little, you just have an unorganized Florida pulse thunderstorm. Sounds like you should be helping out. Please, help. I've been attempting to add references, which usually causes refined wording with time. =)

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Drove from Virginia to Kentucky through West Virginia today (6-30-12) after last night's storm. There was virtually no power anywhere. People stranded at gas stations unable to get gas. Rest areas closed. The wide spread nature of the outage was unlike anything I've seen

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being called when it happened. (I was three-and-a-half years old when it happened, and I have a distant memory of my parents getting me out of bed and moving me to an air mattress under my dad's model railroad in the basement in case it did structural damage to the house.)

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I'm not a wiki fiddler but I just came from Maryland to Virginia - a third of the mid-Atlantic power outage is there, some 895k ppl w/o power since midnight June 29th. Someone who can do nice edits please fix the page to reflect that Maryland was affected as

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As the source states, while similar systems form elsewhere in the world, it seems that the term "derecho" is only used for them in North America, with no specific term for them elsewhere--except maybe "windstorm," which is what I (just barely) remember the

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The storm systems tend to be right-movers. Before I looked it up, I assumed that's why they were called derecho. Derecho/a can mean straight, right, or upright, depending upon the context. The section can't be deleted since it's well-referenced.

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I have to concur. Whatever the motives of the material about profits and liability, how relevant can it be to derechos in Canada or Bangladesh? Unless someone defends this, it should be removed; if no one else wants to, I will.

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There are slightly tighter constraints regarding actual "derecho" classification. They have to last at least 400km with 3 reports of winds 33 m/s or greater. Also no more than 3 hours can elapse between any two reports of :

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Although derecho can sometimes mean "right", in this context, its usual meaning of "straight", is applicable, probably shortened from "viento derecho" (straight-line wind). There's no sense in this wind being named "right".

1287:. A warm weather phenomenon, derechos occur mostly in summer, especially June and July in the Northern Hemisphere. They can occur at any time of the year and occur as frequently at night as in the daylight hours. 1162:

I think it's clear that the term "derecho" was coined as a counterpart to "tornado". In one sense, they represent opposites. Ferocious straight-line winds associated with a thunderstorm versus ferocious turning

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awful.... 68000 without power for 3-5 days... massive damage that we're still cleaning up, roofs, entire houses, cars destroyed... 150 year old trees uprooted... not a beautiful storm if you are in it's path!

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Sounds like the controversy has started once again in the light of the June 13 storm. But by radar shows and storm reports, that event should be classified as one. Link about this controversy on Accuweather

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It would be hard to believe similar systems don't form over Europe, Asia, or Australia. I think this is why someone stuck the tag on it. I got stuck with a similar tag regarding dry line some months back.

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not all) were hit also three times July 15, 1995 (south end), July 5, 1999 (Quebec-side) and July 17, 2006 (again Quebec, but also northwest and north east portion of the city) and the city of Gatineau.

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There is a specific article linked to the Mid-Atlantic Derecho. It should be reflected in that article, not this one. This is the general overarching article for the term, not specific events.

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I thought I had said this, but I was mistaken. Derechos do occur elsewhere and there is formal scientific literature out there in journals and conferences. Here are a few examples:

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If a bow echo produces 300 miles of damage, stops for 50 miles, and then produces 100 miles of additional damage, is the storm still a derecho as it goes through that last 100 miles?

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Any responses? As far as I can tell from my interpretation of the reference I found, the globalization template is inappropriate and I'm probably going to take it off again soon.

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This is virtually just about US and Canada (with one small mention about Germany, maybe if someone can find something for other continents, that would make this article better.--

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I generally follow science pretty well, but what we have now has way too many technical terms. The layman would have to look up each one to figure out what is written.

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there should be corresponding terms for the same kind of storm used by meteorologists in other languages. I don't see why this article cannot cover this issue plainly. -

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this in the article, it would answer a question that many, myself among others, might have. If anyone has an answer to this, please let me know. I'm very curious. --

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Following is the development section from the NOAA page about derechos. It is public domain, and could be copied, although perhaps some rewriting is in order.

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It looks like this article is confused between "derechoes" and "derechos" as the plural for derecho. Can someone who knows more about Spanish correct this?

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If a bow echo produces 300 miles of damage and splits into 2 separate bow echos which each continue to cause damaging winds, is this 1, 2, or 3 derechos?

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with moderate to high levels of instability. Derechos form within environments of low-level warm air advection and significant low-level moisture.

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Derecho is Spanish for right; recto is Spanish for straight. Look it up or ask a native Hispanic speaker. Perhaps this section should be deleted.

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If a bow echo produces 300 miles of damage, stops for 50 miles, and then produces 300 miles of additional damage, is this two separate derechos?

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Hmmm... Most of the "Derecho" events on the NOAA page only exist there, on wikipedia, and people using wikipedia as a reference. Shenanigans?

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Whats the difference? The difference should be made clearer, otherwise the entry on single-bow serial derechos should be removed.

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Burke, Patrick C.; Schultz, David M. (2004). "A 4-Yr Climatology of Cold-Season Bow Echoes over the Continental United States".

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If a bow echo produces a 150 mile swath of damage, stops for 50 miles, and does another 150 miles of damage, is this a derecho?

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According to Duolingo, in Spanish 'derecha' means 'right', 'derecho' means straight. Two words which can be easily confused.

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similar to a gust front, except that the wind is sustained and generally increases in strength behind the "gust" front

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I here that this beautiful type of storm is on the rise! is that true? If so there will be more editing on this!--

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to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the

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to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the

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The translation of "derecho" to English is "right". The word "straight" translates to "recto" in Spanish.

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has become a subject more people would want to know about because they have never heard of it before.

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season derechos in the Northern Hemisphere form in west to northwesterly flow at mid levels of the

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echo or group of bow echos traveling at least 240 miles all the while remaining severe (i.e. : -->

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on Knowledge. If you would like to participate, please visit the project page, where you can join

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So, we will probably have to modify some sections. I've put the tag on that section as a result--

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and related subjects on Knowledge. To participate, help improve this article or visit the

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https://web.archive.org/web/20090506002006/http://www.ofcm.gov/slso/pdf/slsochp2.pdf

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You think someone could get a better radar image than an B&W image from 1969?

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http://www.accuweather.com/en/weather-news/the-derecho-controversy-unders/14278831

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If the lead section is too technical for you, perhaps you should be reading the

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This article has been viewed enough times in a single week to appear in the

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the references seem to be circular and point back to the same NOAA page...

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With the hullaballoo about the Mid-Atlantic Storm (29 June-30 June 2012),

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I would follow the above with a pruned version of the last paragraph:

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http://www.erh.noaa.gov/er/cle/wx_events/2012/June/29/derechoclimo.png

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http://www.spc.noaa.gov/misc/AbtDerechos/derechofacts.htm#development

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http://www.spc.noaa.gov/misc/AbtDerechos/derechofacts.htm#development

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http://www.spc.noaa.gov/misc/AbtDerechos/derechofacts.htm#development

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that is associated with a fast-moving band of severe thunderstorms

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in the form of a squall line usually taking the form of a bow echo

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for additional information. I made the following changes:

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for additional information. I made the following changes:

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His concerns are legitimate. The lead is quite technical.

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combined one is a multi-bow, which is a different kind)?

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A derecho (pronounced ) is a widespread and long-lived

738:(Some guy who likes Knowledge, but never edits it.) 310:, a collaborative effort to improve the coverage of 1989:Article says March - May. Should it say Dec - Feb? 1907:using the archive tool instructions below. Editors 1797:using the archive tool instructions below. Editors 1241:The parts in bold are too technical for a WP:LEAD 539:bring it up and let the wiki-experts handle it. ( 1693:Single-bow serial derecho vs. progressive derecho 913:https://www.duolingo.com/skill/es/Directions/tips 2047:Top-importance Thunderstorm and tornado articles 1885:http://snrs.unl.edu/amet451/miriovsky/what.html 1893:This message was posted before February 2018. 1783:This message was posted before February 2018. 1443:Map that could be interesting for the article 8: 2072:C-Class physics articles of Low-importance 1863:I have just modified one external link on 1753:I have just modified one external link on 1277:convection-induced straight-line windstorm 915: 250: 58: 2042:C-Class Thunderstorm and tornado articles 1775:http://www.ofcm.gov/slso/pdf/slsochp2.pdf 1378:Powerline and tree maintenance? Really? 1626: 252: 60: 30: 2010:2601:589:8481:CF70:E53B:582:2CD2:FEE9 1360:has too much unintelligible jargon. 7: 2087:Pages in the Knowledge Top 25 Report 1487:What, exactly, constitutes a derecho 304:This article is within the scope of 112:This article is within the scope of 2052:WikiProject Severe weather articles 1471:I concur. It has been added. =) 786:History of the term and actual use? 444:Unsupported assertion re: jet split 393:. The week in which this happened: 49:It is of interest to the following 1181:NOAA has some good information on 25: 1867:. Please take a moment to review 1757:. Please take a moment to review 510:wind divergence, not a jet split. 2008:Derecho in a very small writing 1517:Major classification questions. 715:No, they're still rather rare. ( 382: 291: 281: 254: 218: 99: 89: 62: 31: 2092:Knowledge global requested maps 2077:C-Class fluid dynamics articles 2067:Low-importance physics articles 2037:Top-importance Weather articles 550:What about Detroit and Windsor? 344:This article has been rated as 193:This article has been rated as 944:05:00, 19 September 2021 (UTC) 421:It is requested that a global 1: 1976:08:58, 23 February 2018 (UTC) 1961:05:03, 9 September 2017 (UTC) 816:10:58, 24 February 2008 (UTC) 801:10:55, 24 February 2008 (UTC) 563:01:44, 2 September 2006 (UTC) 359:This article is supported by 324:Knowledge:WikiProject Physics 318:and see a list of open tasks. 231:This article is supported by 173:Knowledge:WikiProject Weather 2057:WikiProject Weather articles 327:Template:WikiProject Physics 176:Template:WikiProject Weather 1520:--Bowser the Storm Tracker 930:01:18, 28 August 2020 (UTC) 850:19:59, 12 August 2020 (UTC) 2108: 1924:(last update: 5 June 2024) 1860:Hello fellow Wikipedians, 1814:(last update: 5 June 2024) 1750:Hello fellow Wikipedians, 1724:merged the content of the 711:16:35, 23 March 2007 (UTC) 350:project's importance scale 234:WikiProject Severe weather 199:project's importance scale 2018:21:08, 9 April 2024 (UTC) 1741:16:04, 14 June 2014 (UTC) 1617:00:41, 29 July 2012 (UTC) 1554:05:24, 15 June 2013 (UTC) 1524:21:00, 27 July 2012 (UTC) 1481:20:13, 12 July 2012 (UTC) 1370:20:27, 12 July 2012 (UTC) 1246:a clear, accessible style 1230:11:03, 17 June 2014 (UTC) 1202:23:52, 17 July 2012 (UTC) 1047:04:24, 13 June 2009 (UTC) 1026:17:09, 12 June 2013 (UTC) 964:13:25, 28 July 2008 (UTC) 906:23:45, 13 July 2012 (UTC) 890:16:41, 13 July 2012 (UTC) 875:23:46, 14 June 2008 (UTC) 835:08:18, 13 June 2008 (UTC) 780:20:25, 12 July 2012 (UTC) 736:23:42, 30 June 2012 (UTC) 674:04:54, 29 July 2008 (UTC) 628:"More Trees Down" Derecho 588:07:06, 23 June 2007 (UTC) 577:05:22, 4 March 2007 (UTC) 358: 343: 276: 214: 192: 84: 75:Thunderstorms / Tornadoes 57: 2062:C-Class physics articles 2032:C-Class Weather articles 1999:17:23, 25 May 2022 (UTC) 1851:02:53, 22 May 2017 (UTC) 1707:16:34, 24 May 2013 (UTC) 1465:23:45, 5 July 2012 (UTC) 1435:20:44, 4 July 2012 (UTC) 1421:16:31, 4 July 2012 (UTC) 1404:15:21, 4 July 2012 (UTC) 1393:03:50, 4 July 2012 (UTC) 1355:02:25, 5 July 2012 (UTC) 1323:15:30, 4 July 2012 (UTC) 1316:Simple English Knowledge 1308:04:03, 3 July 2012 (UTC) 1269:04:06, 3 July 2012 (UTC) 1173:00:45, 6 July 2012 (UTC) 1152:03:46, 5 July 2012 (UTC) 1117:00:38, 3 July 2012 (UTC) 1090:20:56, 2 July 2012 (UTC) 1074:14:36, 2 July 2012 (UTC) 984:08:58, 26 May 2009 (UTC) 763:02:54, 1 July 2012 (UTC) 720:13:11, 7 June 2007 (UTC) 694:00:27, 2 July 2007 (UTC) 636:14:21, 1 July 2007 (UTC) 613:11:59, 1 July 2007 (UTC) 599:06:14, 1 July 2007 (UTC) 568:Geographic scope limited 544:13:11, 7 June 2007 (UTC) 520:00:40, 6 July 2012 (UTC) 505:02:11, 5 July 2012 (UTC) 490:00:27, 5 July 2012 (UTC) 475:22:41, 4 July 2012 (UTC) 459:22:16, 4 July 2012 (UTC) 362:Fluid Dynamics Taskforce 118:, which collaborates on 2082:Fluid dynamics articles 1856:External links modified 1746:External links modified 1669:Weather and Forecasting 1577:Development of derechos 1009:14:35, 6 May 2009 (UTC) 1578: 1187:the origin of the term 417: 211: 39:This article is rated 1576: 1191:the storms themselves 1052:Why the Spanish term? 415: 210: 1905:regular verification 1795:regular verification 662:Punkka, et al (2006) 1971:article - anyone ? 1895:After February 2018 1785:After February 2018 1563:DERECHO DEVELOPMENT 435:improve its quality 433:in this article to 307:WikiProject Physics 115:WikiProject Weather 1949:InternetArchiveBot 1900:InternetArchiveBot 1839:InternetArchiveBot 1790:InternetArchiveBot 1579: 702:Increasing numbers 418: 398:June 9 to 15, 2013 212: 133:Articles Requested 45:content assessment 1925: 1815: 1570:(courtesy U.S. ) 1544:comment added by 1455:comment added by 1311: 1294:comment added by 1272: 1255:comment added by 1233: 1216:comment added by 1155: 1138:comment added by 999:comment added by 932: 920:comment added by 766: 749:comment added by 708:Takaomi I. 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