Weather Alert in Idaho
Flood Advisory issued March 14 at 1:19PM PDT until March 15 at 12:00PM PDT by NWS Spokane WA
AREAS AFFECTED: Latah, ID; Lewis, ID; Nez Perce, ID; Asotin, WA; Garfield, WA; Whitman, WA
DESCRIPTION: * WHAT...Small stream flooding caused by excessive rainfall is occurring. * WHERE...Portions of Idaho, including the following counties, Latah, Lewis and Nez Perce and Southeast Washington, including the following counties, Asotin, Garfield and Whitman. * WHEN...Until noon PDT Sunday. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Water over roadways. * ADDITIONAL DETAILS... - At 110 PM PDT, Local law enforcement reported flooding in the advisory area. Persistent precipitation over the last 2 days has resulted in high flows on rivers and streams. - Flooding impacts will continue, but no additional rainfall is expected. Rivers will gradually recede through the day. - Some locations that will experience flooding include... Lewiston, Pullman, Moscow, Clarkston, Lapwai, Colfax, Pomeroy, Genesee, Troy, Potlatch, Juliaetta, Deary, Craigmont, Nezperce, Culdesac, Winchester, Kendrick, Bovill, West Clarkston-Highland and Clarkston Heights-Vineland. - http://www.weather.gov/safety/flood
INSTRUCTION: Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles.
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Weather Topic: What is Sleet?
Home - Education - Precipitation - Sleet
Next Topic: Snow
Sleet is a form of precipitation in which small ice pellets are the primary
components. These ice pellets are smaller and more translucent than hailstones,
and harder than graupel. Sleet is caused by specific atmospheric conditions and
therefore typically doesn't last for extended periods of time.
The condition which leads to sleet formation requires a warmer body of air to be
wedged in between two sub-freezing bodies of air. When snow falls through a warmer
layer of air it melts, and as it falls through the next sub-freezing body of air
it freezes again, forming ice pellets known as sleet. In some cases, water
droplets don't have time to freeze before reaching the surface and the result is
freezing rain.
Next Topic: Snow
Weather Topic: What are Stratocumulus Clouds?
Home - Education - Cloud Types - Stratocumulus Clouds
Next Topic: Stratus Clouds
Stratocumulus clouds are similar to altocumulus clouds in their
fluffy appearance, but have a slightly darker shade due to their additional mass.
A good way to distinguish the two cloud types is to hold your hand out and measure
the size of an individual cloud; if it is the size of your thumb it is generally
an altocumulus cloud, if it is the size of your hand it is generally a
stratocumulus cloud.
It is uncommon for stratocumulus clouds to produce precipitation, but if they do
it is usually a light rain or snow.
Next Topic: Stratus Clouds
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