20:
407:
339:
452:
162:
157:
151:
145:
140:
135:
130:
125:
447:
442:
114:
109:
104:
99:
94:
84:
79:
74:
69:
64:
319:
302:
285:
268:
255:
238:
225:
208:
363:
437:
432:
383:
38:
33:
25:
426:
411:
387:
367:
343:
242:
272:
306:
289:
259:
229:
15:
323:
212:
192:
This category has the following 12 subcategories, out of 12 total.
45:
54:
50:
59:
8:
408:1820s natural disasters in the United States
7:
404:
360:
316:
299:
282:
252:
222:
205:
194:
186:
14:
340:1820s Atlantic hurricane seasons
18:
453:19th-century natural disasters
1:
448:Natural disasters by decade
469:
31:
443:1820s in the environment
320:1829 natural disasters
303:1828 natural disasters
286:1827 natural disasters
269:1826 natural disasters
256:1825 natural disasters
239:1824 natural disasters
226:1822 natural disasters
209:1821 natural disasters
49:, i.e. in the years
364:1820s earthquakes
39:natural disasters
460:
438:1820s in science
413:
406:
389:
369:
362:
345:
325:
318:
308:
301:
291:
284:
274:
261:
254:
244:
231:
224:
214:
207:
179:
174:
169:
28:
23:
22:
21:
468:
467:
463:
462:
461:
459:
458:
457:
433:1820s disasters
423:
422:
421:
420:
419:
418:
415:
414:
403:
394:
391:
390:
374:
371:
370:
359:
350:
347:
346:
330:
327:
326:
315:
310:
309:
298:
293:
292:
281:
276:
275:
263:
262:
251:
246:
245:
233:
232:
221:
216:
215:
204:
185:
184:
183:
182:
177:
172:
167:
120:
119:
58:
24:
19:
17:
12:
11:
5:
466:
464:
456:
455:
450:
445:
440:
435:
425:
424:
417:
416:
402:
401:
398:
395:
393:
392:
382:
381:
378:
375:
373:
372:
358:
357:
354:
351:
349:
348:
338:
337:
334:
331:
329:
328:
314:
313:
311:
297:
296:
294:
280:
279:
277:
267:
266:
264:
250:
249:
247:
237:
236:
234:
220:
219:
217:
203:
202:
199:
196:
195:
190:
187:
181:
180:
175:
170:
165:
160:
155:
148:
143:
138:
133:
128:
122:
121:
118:
117:
112:
107:
102:
97:
92:
87:
82:
77:
72:
67:
61:
60:
30:
29:
26:History portal
13:
10:
9:
6:
4:
3:
2:
465:
454:
451:
449:
446:
444:
441:
439:
436:
434:
431:
430:
428:
409:
405:
400:
399:
396:
385:
380:
379:
376:
365:
361:
356:
355:
352:
341:
336:
335:
332:
321:
317:
312:
304:
300:
295:
287:
283:
278:
270:
265:
257:
253:
248:
240:
235:
227:
223:
218:
210:
206:
201:
200:
197:
193:
189:Subcategories
188:
176:
171:
166:
164:
161:
159:
156:
154:
153:
149:
147:
144:
142:
139:
137:
134:
132:
129:
127:
124:
123:
116:
113:
111:
108:
106:
103:
101:
98:
96:
93:
91:
88:
86:
83:
81:
78:
76:
73:
71:
68:
66:
63:
62:
56:
52:
48:
47:
41:
40:
35:
27:
16:
384:1820s floods
191:
150:
89:
43:
37:
427:Categories
324:(1 C, 1 P)
260:(1 C, 2 P)
213:(1 C, 1 P)
34:category
44:decade
42:in the
36:is for
412:(2 C)
388:(5 P)
368:(4 C)
344:(3 P)
307:(1 C)
290:(1 C)
273:(1 P)
243:(2 P)
230:(1 C)
115:1870s
110:1860s
105:1850s
100:1840s
95:1830s
90:1820s
85:1810s
80:1800s
75:1790s
70:1780s
65:1770s
46:1820s
32:This
178:24th
173:23rd
168:22nd
163:21st
158:20th
152:19th
146:18th
141:17th
136:16th
131:15th
126:14th
55:1829
51:1820
198:0–9
53:to
429::
410:
386:
366:
342:
322:
305:
288:
271:
258:
241:
228:
211:
397:U
377:F
353:E
333:A
57:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.