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430:
174:. This is a process not yet fully understood, but is probably in some way associated with charge separation induced by severe turbulence, and, perhaps, by the nature of the particles of ash in the cloud. Large flammageniti can contain temperatures well below freezing, and the electrostatic properties of any ice that forms may also play a role. A flammagenitus that produces lightning is actually a type of
154:
257:
A flammagenitus cloud can help or hinder a fire. Sometimes, the moisture from the air condenses in the cloud and falls as rain, often extinguishing the fire. There have been numerous examples of a large firestorm being extinguished by the flammagenitus that it created. However, if the fire is large
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156:
155:
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169:
Flammageniti contain severe turbulence, manifesting as strong gusts at the surface, which can exacerbate a large conflagration. A large flammagenitus, particularly one associated with a volcanic eruption, may also produce
266:, which may produce lightning and start another fire. Even if there is no lightning, a cloud of this type can cause a sudden increase in wind speed, which could dramatically worsen the wildfire that created the cloud.
347:
440:
157:
134:
can enhance its formation. Condensation of ambient moisture (moisture already present in the atmosphere), as well as moisture evaporated from burnt vegetation or volcanic
222:
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339:
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404:
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237:
associated with the fire. It also tends to expand because the ash involved in the cloud's formation increases the amount of
182:. The World Meteorological Organization formerly classified flammagenitus and cumulonimbus flammagenitus respectively as
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370:
244:
17:
1351:
1174:
82:, and the two phenomena may occur in conjunction with each other. However, either may occur without the other.
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138:(water vapour being a dominant component of volcanic eruptive gases), occurs readily on particles of ash.
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associated with fire or volcanic eruptions. A flammagenitus is similar dynamically in some ways to a
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can induce formation of this cloud, by mechanisms similar to those that form
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Flammagenitus clouds, born from a wildfire in Czech
Republic in July 2022
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Flammagenitus is often grayish to brown in color because of the ash and
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and selected species, supplementary features, and other airborne
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Wildfire in
Yellowstone National Park produces pyrocumulus cloud
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51:
schematic: (1) fire, (2) updraft, (3) strong gusty winds, (A)
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1060:
Cumulus castellanus (unofficial alternative name for Cu con))
471:
340:"Cloud Atlas leaps into 21st century with 12 new cloud types"
258:
enough, the cloud may continue to grow, and become a type of
234:
186:(mediocris or congestus) and cumulonimbus. In 2017, the WMO
592:
No differentiated sub-types; tends to resemble cirrostratus
149:
near Spring Valley, Arizona, producing a pyrocumulus cloud.
103:
1142:
107:
553:
1066:
term for Cu con and "Cu cas" is
Towering cumulus ))
499:
1387:(Mother cloud)+mutatus (e.g. cumulomutatus (cumut)
1384:(Mother cloud)+genitus (e.g. cumulogenitus (cugen)
102:A flammagenitus cloud is produced by the intense
1415:
225:in Oregon and California, 2014. Aircraft is an
27:Cloud that forms from large fires or explosions
456:
110:from the surface. The intense heat induces
463:
449:
337:
564:Nacreous polar stratospheric clouds (PSC)
371:"Fire Cloud Cumulus Cumulonimbus Weather"
893:
485:Latin terminology except where indicated
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243:
216:
201:
152:
140:
89:
41:
29:
788:Mutatus non-height specific (see below)
314:"Pyrocumulus entry in the AMS Glossary"
252:
14:
1416:
1165:
817:
752:
706:
444:
381:from the original on 22 October 2013
338:Sutherland, Scott (March 23, 2017).
194:as the formal name of these clouds.
130:clouds. The presence of a low-level
1190:Stratocumulus stratiformis (Sc str)
1185:Stratocumulus lenticularis (Sc len)
401:"Pyrocumulus by The Airline Pilots"
24:
1175:Stratocumulus castellanus (Sc cas)
731:Cirrocumulus stratiformis (Cc str)
726:Cirrocumulus lenticularis (Cc len)
38:, producing a flammagenitus cloud.
34:The 2004 Willow Fire burning near
25:
1445:
847:Altocumulus stratiformis (Ac str)
842:Altocumulus lenticularis (Ac len)
716:Cirrocumulus castellanus (Cc cas)
422:
368:
952:Cumulonimbus capillatus (Cb cap)
827:Altocumulus castellanus (Ac cas)
585:polar stratospheric clouds (PSC)
428:
350:from the original on 31 May 2022
288:World Meteorological Association
178:, a thundercloud, and is called
1131:St-only genitus cloud and other
767:Cirrostratus nebulosus (Cs neb)
407:from the original on 2011-09-28
320:from the original on 2022-12-19
213:produces a flammagenitus cloud.
94:A flammagenitus cloud from the
1200:Stratocumulus volutus (Sc vol)
1180:Stratocumulus floccus (Sc flo)
961:Cb-only supplementary features
762:Cirrostratus fibratus (Cs fib)
393:
331:
306:
276:
221:Flammagenitus cloud above the
13:
1:
1138:Stratus silvagenitus (St sil)
996:Cumulonimbus flumen ((Cb flu)
989:Cb-only accessories and other
837:Altocumulus lacunosus (Ac la)
721:Cirrocumulus floccus (Cc flo)
269:
197:
947:Cumulonimbus calvus (Cb cal)
852:Altocumulus volutus (Ac vol)
832:Altocumulus floccus (Ac flo)
526:Noctilucent type III billows
85:
7:
901:Nimbostratus virga (Ns vir)
644:Cirrus castellanus (Ci cas)
10:
1450:
1122:Stratus nebulosus (St neb)
1056:Cumulus congestus (Cu con)
1050:Cumulus mediocris (Cu med)
685:Cirrus vertebratus (Ci ve)
529:Noctilucent type IV whirls
264:cumulonimbus flammagenitus
180:cumulonimbus flammagenitus
1375:
1334:
1288:
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1237:
1212:
1156:
1130:
1107:
1098:
1073:
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988:
979:Cumulonimbus murus ((mur)
968:Cumulonimbus cauda ((cau)
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937:
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917:
882:
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808:
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659:Cirrus spissatus (Ci spa)
634:
625:
616:
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523:Noctilucent type II bands
490:
211:Yellowstone National Park
188:International Cloud Atlas
1117:Stratus fractus (St fra)
1045:Cumulus humilis (Cu hum)
1024:Variable vertical extent
974:Cumulonimbus incus (inc)
649:Cirrus fibratus (Ci fib)
520:Noctilucent type I veils
514:Polar mesospheric clouds
1195:Stratocumulus Undulatus
680:Cirrus intortus (Ci in)
664:Cirrus uncinus (Ci unc)
654:Cirrus floccus (Ci flo)
1335:Supplementary features
1215:supplementary features
249:
230:
223:2014 Oregon Gulch Fire
214:
166:
150:
99:
98:in southern California
55:
53:pyrocumulonimbus cloud
39:
1378:and human-made clouds
874:Altostratus undulatus
583:Nitric acid and water
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220:
205:
164:
144:
93:
45:
33:
437:at Wikimedia Commons
435:Flammagenitus clouds
253:Effects on wildfires
118:. Phenomena such as
1396:Homomutatus (homut)
1392:Homogenitus (hogen)
1362:Praecipitatio (pra)
574:Lenticular nacreous
344:The Weather Network
239:condensation nuclei
60:flammagenitus cloud
1158:Stratocumulus (Sc)
1145:(Fg) Surface level
1086:Trade wind cumulus
571:Cirriform nacreous
346:. Pelmorex Media.
260:cumulonimbus cloud
250:
231:
215:
167:
151:
120:volcanic eruptions
100:
68:pyrocumulus cloud,
62:, also known as a
56:
40:
1411:
1410:
1407:
1406:
1403:
1402:
1321:Translucidus (tr)
1275:
1274:
1208:
1207:
1152:
1151:
1094:
1093:
1015:
1014:
931:Towering vertical
928:Cumulonimbus (Cb)
913:
912:
909:
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884:Nimbostratus (Ns)
860:
859:
795:
794:
775:
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745:Cirrostratus (Cs)
739:
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699:Cirrocumulus (Cc)
693:
692:
673:Ci-only varieties
603:
602:
599:
598:
540:
539:
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433:Media related to
162:
96:2009 Station Fire
18:Pyrocumulus cloud
16:(Redirected from
1441:
1429:Wildfire ecology
1286:
1285:
1266:Actinoform cloud
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1162:
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1104:
1028:
1027:
1002:Overshooting top
935:
934:
924:
923:
891:
890:
866:Altostratus (As)
815:
814:
810:Altocumulus (Ac)
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377:. R R Donelley.
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294:on 28 March 2017
290:. Archived from
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76:cumuliform cloud
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1342:Asperitas (asp)
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1296:Duplicatus (du)
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1268:(Stratocumulus)
1241:accessory cloud
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284:"Flammagenitus"
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147:2021 Tiger Fire
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36:Payson, Arizona
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782:mutatus cloud
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37:
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19:
1260:Pannus (pan)
1250:Pileus (pil)
1222:Arcus ((arc)
1100:Stratus (St)
1021:Cumulus (Cu)
998:Beaver tail)
800:Medium-level
609:Tropospheric
479:hydrometeors
409:. Retrieved
395:
383:. Retrieved
375:Sciences 360
374:
364:
352:. Retrieved
343:
333:
322:. Retrieved
308:
296:. Retrieved
292:the original
287:
278:
256:
232:
191:
176:cumulonimbus
168:
124:forest fires
101:
71:
67:
63:
59:
57:
52:
46:
1367:Virga (vir)
1357:Mamma (mam)
1347:Cavum (cav)
1306:Opacus (op)
1255:Velum (vel)
1228:Tuba ((tub)
981:Wall cloud)
970:Tail cloud)
887:Multi-level
627:Cirrus (Ci)
510:Noctilucent
492:Mesospheric
262:known as a
227:F-15C Eagle
128:homogenitus
1418:Categories
1280:Non-height
617:High-level
411:2009-01-02
385:22 October
324:2017-03-28
270:References
198:Appearance
136:outgassing
132:jet stream
112:convection
72:fire cloud
1434:Volcanism
1289:Varieties
1243:and other
1081:Horseshoe
1007:Hot tower
918:Low-level
894:Varieties
172:lightning
86:Formation
80:firestorm
48:Firestorm
1282:specific
556:15–30 km
502:80–85 km
405:Archived
379:Archived
354:24 March
348:Archived
318:Archived
298:27 March
207:Wildfire
116:moisture
1424:Cumulus
1264:Other-
1167:Species
1109:Species
1040:Fractus
1032:Species
939:Species
819:Species
754:Species
708:Species
636:Species
619:3–18 km
184:cumulus
106:of the
104:heating
1224:Shelf)
920:0–2 km
802:2–8 km
475:genera
190:chose
1074:Other
512:(NLC)
472:Cloud
235:smoke
1064:ICAO
387:2013
356:2017
300:2017
145:The
122:and
1143:Fog
483:WMO
241:.
209:in
108:air
70:or
1420::
481:-
403:.
373:.
342:.
316:.
286:.
66:,
58:A
1062:(
1058:(
1054:(
464:e
457:t
450:v
414:.
389:.
358:.
327:.
302:.
229:.
20:)
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