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Cyclone Hellen

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1993: 806: 250: 737:, it prompted an "orange alert" on March 30 for the area due to the potential for hurricane-force gusts. The storm's rapid intensification caught most residents on the island off-guard, with widespread disruptions to traffic and electricity taking place. Wind gusts up to 100 km/h (62 mph) downed trees and power lines, blocking off roads while heavy rains caused significant flooding. A peak 24‑hour rainfall of 239 mm (9.4 in) was measured in 612:
to locate, with peak winds dropping to 45 km/h (30 mph). As a result, MĂ©tĂ©o-France discontinued advisories that day, as did the JTWC. The remnants moved back over open waters, but were not expected to reorganize due to the poor nature of the convection. As the low continued to the west, the convection increased on April 4 while approaching the coastline of Mozambique, although the system failed to redevelop before moving onshore.
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estimated at 155 km/h (100 mph) at 0000 UTC on March 30. Six hours later, they further upgraded the storm to an intense tropical cyclone with winds of 195 km/h (120 mph). Hellen attained its peak intensity between 1100 and 1500 UTC as a very intense tropical cyclone, with winds of 230 km/h (145 mph), gusts reaching 325 km/h (200 mph), and a
359: 438: 590:). This ranked it as one of the most powerful storms over the Mozambique Channel on record. The storm featured a 20 km (12 mi) wide eye embedded within a symmetrical and intense CDO, spanning 240 km (150 mi) across. The JTWC estimated Hellen to have attained one-minute sustained winds of 250 km/h (155 mph), making it a high-end 448: 769:
On March 31, a boat capsized off the coast of northwest Madagascar, killing three and leaving nine others missing. High seas washed away 20 canoes along the coast. Initial assessments of damage across Madagascar were initially hampered by poor weather and inaccessibility. The storm flooded
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over-topping its banks. Tagir Carimo, mayor of Pemba, described the rains as the heaviest he had seen in 20 years. More than 100 poorly constructed homes collapsed in the floods while severe erosion exposed and destroyed water pipes. A major bridge connecting Pemba to surrounding areas was
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with winds of 110 km/h (70 mph), and the previously unfavorable conditions coupled with land interaction to induce rapid weakening. The ridge to the east turned Hellen to a southwest drift over land. By early on April 1, the convection largely dissipated as the center became difficult
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and damaged two dams. Cyclone Hellen destroyed 437 houses and damaged or flooded 174 others, leaving 1,736 people homeless during its passage. The storm also damaged two health facilities and five schools. Overall impact from Hellen was less than expected due to its weakening, with
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in northwestern Madagascar as a weakened cyclone, despite previous forecasts for the center to remain over water. By April 1, Hellen was no longer a tropical cyclone after most of the convection dissipated. The remnants turned to the west, moving over Mozambique without redeveloping, later
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ensued during the later half of March 29 into March 30 at a rate MĂ©tĂ©o-France later referred to as "astounding". Deep convective banding wrapped around a ragged eye, which soon contracted to "pinhole" size. This prompted MĂ©tĂ©o-France to upgrade Hellen to a tropical cyclone with winds
536:(CDO) feature by March 28, continued disruption of the low-level inflow prevented much development. MĂ©tĂ©o-France noted that despite forecasting the storm to peak as a moderate tropical storm, with winds of 85 km/h (50 mph), there was potential for 606:
became apparent. By the end of March 30, Hellen's eye had collapsed and disappeared from satellite imagery, as the combination of dry air and land interaction took their toll on the storm. At about 0800 UTC on March 31, Hellen made landfall on
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from the rest of the country, forcing ferries to transport cars. Three people died in the district of Cariaco when their home collapsed while a fourth drowned in Chiuba. Distributing assistance following the storm was disrupted by damaged roads.
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Early in its existence, Hellen's rainfall in Mozambique destroyed hundreds of houses and a bridge. Flooding killed four people in the country, three of whom due to a home collapsing. Later, the cyclone passed south of the
350:, high rainfall flooded rivers, sweeping one car away. In northwestern Madagascar, Hellen damaged or destroyed 611 houses, leaving 1,736 people homeless. The storm killed three people after capsizing a boat. 1958: 702:. On the island, 7,879 people had to evacuate their houses due to the risk of further landslides, some of whom went to schools set up as shelters while others stayed with family or friends. Storm surge on 601:
After peak intensity, the cyclone's eye soon began to fill and cool as weakening ensued. Defying previous forecasts, Hellen continued on a southeasterly track toward Madagascar and the likelihood of it making
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was closed for about 24 hours due to the storm. Also on the island, a road was damaged, and one house was flooded. Shortly after the storm, workers began repairing roads and distributing aid.
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developed along the system's eastern side; however, this band disrupted low-level inflow of warm, moist air, and suppressed convection over the circulation center.
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Due to the storm affecting water access in northwestern Madagascar, there was concern for a disease outbreak, with a flu outbreak noted in Mahajanga. The national
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utilized 54 volunteers to assist in the storm's aftermath, such as distributing kitchen kits and agriculture units. Residents donated 2 million
511: 310: 1730: 719: 794:) to the Red Cross, which were used to purchase medicines, while the government provided 600 kg (1,300 lb) of rice for affected residents. 1589: 1553: 885: 822:, which rapidly intensified from a tropical low to a Category 5 cyclone in less than 48 hours in the Australian region just one week before Hellen. 595: 2447: 2411: 2212: 770:
7,795 ha (19,260 acres) of rice fields across the country, as well as 114 ha (280 acres) of other crops, threatening harvests after a
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due to the storm's small size. Conversely, the JTWC noted that proximity to land and dry mid-level air, represented by surface
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and waves that killed one person. The storm forced 8,956 people to evacuate their homes due to the threat for
285:. Hellen formed on March 26 in the northern portion of the channel, and the storm brought rainfall to coastal 22: 745:, cars were swept away by a swollen river. Along the coast, waves up to 5 m (16 ft) damaged marinas in 670:. There, 901 houses were damaged, of which about 20% were destroyed. Flooding displaced 389 people in 372: 157: 2421: 811: 562:
established itself to the northeast. Throughout March 29, the storm became increasingly organized with an
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became more enhanced and symmetrical. A compact system, the low steadily organized as it emerged over the
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forming in the middle of the thunderstorms. The cyclone attained peak intensity March 30, with
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Bulletin for Cyclonic Activity and Significant Tropical Weather in the Southwest Indian Ocean
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Bulletin for Cyclonic Activity and Significant Tropical Weather in the Southwest Indian Ocean
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Cyclone Hellen on April 1. The storm had lost most of its convection due to land interaction.
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while in its formative stages. While moving southeastward, it developed an organized area of
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in 2003 â€“ 175 km/h (109 mph) and 935 mbar (935 hPa; 27.6 inHg)
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in 2012 â€“ 205 km/h (127 mph) and 925 mbar (925 hPa; 27.3 inHg)
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in 2009 â€“ 185 km/h (115 mph) and 930 mbar (930 hPa; 27 inHg)
819: 787: 723: 587: 574: 294: 249: 190: 138: 1765:"Flash Update: Thousands affected in Comoros and Mozambique; alerts lifted in Madagascar" 1429:(Report). National Oceanic and Atmospheric Administration. March 31, 2014. Archived from 1399:(Report). National Oceanic and Atmospheric Administration. March 31, 2014. Archived from 1369:(Report). National Oceanic and Atmospheric Administration. March 31, 2014. Archived from 1310:(Report). National Oceanic and Atmospheric Administration. March 31, 2014. Archived from 1280:(Report). National Oceanic and Atmospheric Administration. March 30, 2014. Archived from 1247:(Report). National Oceanic and Atmospheric Administration. March 30, 2014. Archived from 1217:(Report). National Oceanic and Atmospheric Administration. March 30, 2014. Archived from 1187:(Report). National Oceanic and Atmospheric Administration. March 30, 2014. Archived from 1154:(Report). National Oceanic and Atmospheric Administration. March 29, 2014. Archived from 1124:(Report). National Oceanic and Atmospheric Administration. March 29, 2014. Archived from 1094:(Report). National Oceanic and Atmospheric Administration. March 28, 2014. Archived from 1064:(Report). National Oceanic and Atmospheric Administration. March 28, 2014. Archived from 1034:(Report). National Oceanic and Atmospheric Administration. March 28, 2014. Archived from 1004:(Report). National Oceanic and Atmospheric Administration. March 27, 2014. Archived from 974:(Report). National Oceanic and Atmospheric Administration. March 26, 2014. Archived from 944:(Report). National Oceanic and Atmospheric Administration. March 26, 2014. Archived from 914:(Report). National Oceanic and Atmospheric Administration. March 25, 2014. Archived from 1519:(Report). National Oceanic and Atmospheric Administration. April 1, 2014. Archived from 1489:(Report). National Oceanic and Atmospheric Administration. April 1, 2014. Archived from 1459:(Report). National Oceanic and Atmospheric Administration. April 1, 2014. Archived from 37: 2393: 2383: 2378: 2316: 2043: 844: 838: 234: 774:
outbreak had occurred in the months prior to the storm. The storm also killed 23 
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Map plotting the storm's track and intensity, according to the Saffir–Simpson scale
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where 33 mud-built homes were destroyed. Landslides isolated the villages of
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This article is about the 2014 cyclone. For other similarly named storms, see
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in the storm's track, the JTWC anticipated further organization and issued a
1791:"Mayotte : le cyclone Hellen s'Ă©loigne, mais l'alerte reste en vigueur" 754: 738: 687: 479: 343: 1873:"Update on the situation: Intense Tropical Cyclone "Hellen", 10 April 2014" 703: 598:, although this was lowered to 240 km/h (150 mph) in reanalysis. 746: 671: 608: 603: 526: 495: 326: 645:
washed away by the Messalo river. This isolated the northern portion of
857:– A devastating tropical cyclone that affected the same regions in 2019 734: 675: 667: 663: 486:
on March 26. Though continued land interaction initially hindered
347: 335: 298: 558:. Hellen soon assumed an east-southeast track toward Madagascar, as a 771: 707: 699: 325:, and the storm's eye dissipated. On March 31, the storm made 1769:
United Nations Office for the Coordination of Humanitarian Affairs
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United Nations Office for the Coordination of Humanitarian Affairs
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United Nations Office for the Coordination of Humanitarian Affairs
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United Nations Office for the Coordination of Humanitarian Affairs
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and produced prolonged heavy rains over the region. The city of
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supported convective development as it straddled the Mozambique–
2208: 1954: 1665:"Impact of Hellen less than feared; needs assessments continue" 1363:
Very Intense Tropical Cyclone 14 (Hellen) Forecast Warning 013
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Very Intense Tropical Cyclone 14 (Hellen) Forecast Warning 012
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During its formative stages, Hellen meandered around northern
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on March 26. Once further offshore on March 27, the
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over the center of circulation. Warm waters allowed Hellen to
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Tropical storm (39–73 mph, 63–118 km/h)
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Tropical depression (≤38 mph, â‰¤62 km/h)
1822:(in French). Mayotte Hebdo. March 31, 2014. Archived from 1700:"Tropical Depression Hellen overview (as of 1 April 2014)" 532:
Though convection later began to consolidate into a small
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Category 4 (130–156 mph, 209–251 km/h)
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Category 3 (111–129 mph, 178–208 km/h)
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Significant Tropical Weather Outlook for the Indian Ocean
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Intense Tropical Cyclone 14 (Hellen) Forecast Warning 010
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Significant Tropical Weather Outlook for the Indian Ocean
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Significant Tropical Weather Outlook for the Indian Ocean
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Other intense tropical cyclones in the Mozambique Channel
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Category 2 (96–110 mph, 154–177 km/h)
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Moderate Tropical Storm 14 (Hellen) Forecast Warning 007
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Moderate Tropical Storm 14 (Hellen) Forecast Warning 005
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Category 1 (74–95 mph, 119–153 km/h)
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estimated 230 km/h (145 mph) according to the
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Overland Depression 14 (Ex-Hellen) Forecast Warning 017
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Though the center of Cyclone Hellen remained south of
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caused significant damage on all three islands of the
1640:"Mozambique: Flooding Cuts Off Northern Cabo Delgado" 1899:"Point de Situation Cyclone Tropical Intense Hellen" 1618:"Mozambique: Four Dead in Torrential Rains in Pemba" 411:
Category 5 (≥157 mph, â‰Ą252 km/h)
2371: 2330: 2299: 2283: 2242: 1846:"Cyclone Hellen : Madagascar en ligne de mire" 226: 218: 210: 202: 197: 176: 168: 145: 124: 114: 106: 87: 79: 69: 61: 54: 1935:. National Oceanic and Atmospheric Administration 1797:(in French). Agence France-Presse. March 30, 2014 1241:Tropical Cyclone 14 (Hellen) Forecast Warning 009 1088:Tropical Cyclone 21S (Twenty-One) Warning NR 001 1620:. Maputo, Mozambique: AllAfrica. March 30, 2014 2443:2013–14 South-West Indian Ocean cyclone season 1983:2013–14 South-West Indian Ocean cyclone season 283:2013–14 South-West Indian Ocean cyclone season 281:on record, as well as the most intense of the 262:2013–14 South-West Indian Ocean cyclone season 2220: 1966: 1694: 1692: 1690: 1688: 1686: 16:2014 South-West Indian Ocean tropical cyclone 8: 1927:Bureau of Meteorology, MĂ©tĂ©o-France (2014). 1848:(in French). La ChaĂ®ne MĂ©tĂ©o. March 31, 2014 1483:Tropical Cyclone 21S (Hellen) Warning NR 008 1423:Tropical Cyclone 21S (Hellen) Warning NR 007 1393:Tropical Cyclone 21S (Hellen) Warning NR 006 1304:Tropical Cyclone 21S (Hellen) Warning NR 005 1211:Tropical Cyclone 21S (Hellen) Warning NR 004 1058:Tropical Disturbance 14 Forecast Warning 004 1028:Tropical Disturbance 14 Forecast Warning 002 30: 1814: 1812: 273:of March 2014 was one of the most powerful 2227: 2213: 2205: 1973: 1959: 1951: 512:Regional Specialized Meteorological Center 311:Regional Specialized Meteorological Center 248: 36: 29: 1759: 1757: 1755: 1659: 1657: 720:Prince Said Ibrahim International Airport 1867: 1865: 1863: 1268: 1266: 1175: 1173: 886:"HELLEN : 2014-03-26 TO 2014-04-05" 880: 878: 876: 761:were smashed against rocks or stranded. 525:. Drifting slowly eastward, a prominent 1588:(Report). April 5, 2014. Archived from 1552:(Report). April 4, 2014. Archived from 872: 1725: 1723: 1721: 338:islands, causing flooding due to high 147:Category 4-equivalent tropical cyclone 1731:"Cyclone Hellen (as of 2 April 2014)" 1612: 1610: 7: 1343:. United States Navy. March 31, 2014 271:Very Intense Tropical Cyclone Hellen 31:Very Intense Tropical Cyclone Hellen 779:most telephone lines still intact. 640:was the hardest hit area, with the 596:Saffir–Simpson hurricane wind scale 470:became increasingly organized over 2162: 2157: 2114: 2109: 592:Category 4-equivalent cyclone 14: 2174: 2169: 2126: 2121: 2078: 2073: 2042: 2037: 2030: 2025: 741:between March 29 and 30. In 2416: 2407: 2406: 2189: 2188: 2138: 2133: 2066: 2061: 2018: 2013: 1991: 1820:"Mayotte se souviendra d'Hellen" 968:Tropical Cyclone Formation Alert 804: 504:Tropical Cyclone Formation Alert 446: 436: 426: 462:On March 25, 2014, a weak 2448:Very intense tropical cyclones 2236:Very intense tropical cyclones 2090: 2085: 666:, with the worst occurring on 466:accompanied by broad, flaring 1: 2006: 2001: 1933:National Climatic Data Center 694:, and damaged a road between 330:dissipating on April 5. 89:Very intense tropical cyclone 2150: 2145: 2102: 2097: 2054: 2049: 1517:Joint Typhoon Warning Center 1487:Joint Typhoon Warning Center 1427:Joint Typhoon Warning Center 1397:Joint Typhoon Warning Center 1341:Joint Typhoon Warning Center 1308:Joint Typhoon Warning Center 1215:Joint Typhoon Warning Center 1092:Joint Typhoon Warning Center 972:Joint Typhoon Warning Center 942:Joint Typhoon Warning Center 912:Joint Typhoon Warning Center 172:240 km/h (150 mph) 119:325 km/h (200 mph) 110:230 km/h (145 mph) 1879:. ReliefWeb. April 10, 2014 1642:. AllAfrica. March 31, 2014 568:microwave satellite imagery 297:while passing south of the 2469: 1908:. ReliefWeb. April 4, 2014 1771:. ReliefWeb. April 2, 2014 1740:. ReliefWeb. April 2, 2014 1706:. ReliefWeb. April 1, 2014 1671:. ReliefWeb. April 1, 2014 998:Disturbance 14 Warning 001 46:on March 30 over the 23:List of storms named Helen 20: 2402: 2184: 1998: 1989: 1981:Tropical cyclones of the 888:. MĂ©tĂ©o-France La RĂ©union 575:explosive intensification 521:classified the system as 257: 244: 152: 94: 35: 2422:Tropical cyclones portal 1906:Government of Madagascar 1877:Government of Madagascar 812:Tropical cyclones portal 500:sea surface temperatures 616:Preparations and impact 307:maximum sustained winds 2453:Cyclones in Madagascar 625: 534:central dense overcast 459: 354:Meteorological history 301:, with a well-defined 56:Meteorological history 2322:Adeline–Juliet (2005) 2255:Josephine–Jane (1970) 2250:Harriet–Iseult (1970) 647:Cabo Delgado Province 638:Cabo Delgado Province 623: 538:rapid intensification 452:Extratropical cyclone 361: 546:Tropical Cyclone 21S 464:area of low pressure 373:Saffir–Simpson scale 177:Lowest pressure 125:Lowest pressure 44:rapidly intensifying 580:barometric pressure 442:Subtropical cyclone 96:10-minute sustained 32: 2275:Terry–Danae (1976) 626: 553:assigning the name 542:outflow boundaries 498:border. With high 484:Mozambique Channel 460: 279:Mozambique Channel 169:Highest winds 154:1-minute sustained 115:Highest gusts 107:Highest winds 48:Mozambique Channel 2430: 2429: 2202: 2201: 1826:on March 31, 2014 1595:on April 11, 2014 1559:on April 13, 2014 706:flooded parts of 586:(hPa; 27.02  295:rapidly intensify 275:tropical cyclones 268: 267: 2460: 2420: 2410: 2409: 2229: 2222: 2215: 2206: 2192: 2191: 2172: 2160: 2148: 2136: 2124: 2112: 2100: 2088: 2076: 2064: 2052: 2040: 2028: 2016: 2004: 1995: 1975: 1968: 1961: 1952: 1945: 1944: 1942: 1940: 1924: 1918: 1917: 1915: 1913: 1903: 1895: 1889: 1888: 1886: 1884: 1869: 1858: 1857: 1855: 1853: 1842: 1836: 1835: 1833: 1831: 1816: 1807: 1806: 1804: 1802: 1787: 1781: 1780: 1778: 1776: 1761: 1750: 1749: 1747: 1745: 1735: 1727: 1716: 1715: 1713: 1711: 1696: 1681: 1680: 1678: 1676: 1661: 1652: 1651: 1649: 1647: 1636: 1630: 1629: 1627: 1625: 1614: 1605: 1604: 1602: 1600: 1594: 1583: 1575: 1569: 1568: 1566: 1564: 1558: 1547: 1539: 1533: 1532: 1530: 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Index

List of storms named Helen

rapidly intensifying
Mozambique Channel
Remnant low
MF
hPa
mbar
inHg
SSHWS
JTWC
hPa
mbar
inHg
Mozambique
Comoro Islands
Madagascar
IBTrACS
Edit this at Wikidata
2013–14 South-West Indian Ocean cyclone season
tropical cyclones
Mozambique Channel
2013–14 South-West Indian Ocean cyclone season
Mozambique
convection
rapidly intensify
Comoros
eye
maximum sustained winds
Regional Specialized Meteorological Center

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