Weather Alert in Idaho
Hydrologic Outlook issued August 25 at 11:47AM MDT by NWS Missoula MT
AREAS AFFECTED: Clearwater, ID; Idaho, ID; Lemhi, ID; Deer Lodge, MT; Granite, MT; Mineral, MT; Missoula, MT; Powell, MT; Ravalli, MT; Silver Bow, MT
DESCRIPTION: ESFMSO Where: Lemhi, Idaho, and Clearwater Counties in Idaho Ravalli, Mineral, Missoula, Granite, Deer Lodge, Powell, and Silverbow Counties in Montana What: Confidence continues to trend higher that Monsoon moisture will be spreading north into the Northern Rockies by Wednesday, bringing a chance for scattered thunderstorms. These thunderstorms will be capable of producing rain rates in excess of one half inch per hour. The result will be the potential for rock and debris slides in steep terrain along Forest Service roads and recent burn scar areas, as well as Highway 95 from Riggins to Whitebird in Idaho and Skalkaho Road in Montana. Consider delaying any backcountry travel for Wednesday and Thursday of this week.
INSTRUCTION: N/A
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Weather Topic: What are Wall Clouds?
Home - Education - Cloud Types - Wall Clouds
Next Topic: Altocumulus Clouds
A wall cloud forms underneath the base of a cumulonimbus cloud,
and can be a hotbed for deadly tornadoes.
Wall clouds are formed by air flowing into the cumulonimbus clouds, which can
result in the wall cloud descending from the base of the cumulonimbus cloud, or
rising fractus clouds which join to the base of the storm cloud as the wall cloud
takes shape.
Wall clouds can be very large, and in the Northern Hemisphere they generally
form at the southern edge of cumulonimbus clouds.
Next Topic: Altocumulus Clouds
Weather Topic: What are Altostratus Clouds?
Home - Education - Cloud Types - Altostratus Clouds
Next Topic: Cirrocumulus Clouds
Altostratus clouds form at mid to high-level altitudes
(between 2 and 7 km) and are created by a warm, stable air mass which causes
water vapor
to condense as it rise through the atmosphere. Usually altostratus clouds are
featureless sheets characterized by a uniform color.
In some cases, wind punching through the cloud formation may give it a waved
appearance, called altostratus undulatus. Altostratus clouds
are commonly seen with other cloud formations accompanying them.
Next Topic: Cirrocumulus Clouds
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