Weather Alert in California
Flood Watch issued August 25 at 1:01AM PDT until August 25 at 9:00PM PDT by NWS Reno NV
AREAS AFFECTED: Lassen-Eastern Plumas-Eastern Sierra Counties; Greater Lake Tahoe Area; Mono; Mineral and Southern Lyon Counties; Greater Lake Tahoe Area; Greater Reno-Carson City-Minden Area
DESCRIPTION: * WHAT...Flash flooding caused by excessive rainfall is possible due to thunderstorms. Flash flooding is also possible over burn scar areas including the Davis, Conner, Bear, Mill, Inn and Tamarack burn scars. * WHERE...Portions of California, including the following areas, Greater Lake Tahoe Area, Lassen-Eastern Plumas-Eastern Sierra Counties and Mono County and western Nevada, including the following areas, Greater Lake Tahoe Area, Greater Reno-Carson City-Minden Area and Mineral and Southern Lyon Counties. * WHEN...From noon PDT today through 9 PM PDT this evening. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations including burn scars. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS... - http://www.weather.gov/safety/flood
INSTRUCTION: You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.
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Weather Topic: What are Nimbostratus Clouds?
Home - Education - Cloud Types - Nimbostratus Clouds
Next Topic: Precipitation
A nimbostratus cloud is similar to a stratus cloud in its formless,
smooth appearance. However, a nimbostratus cloud is darker than a stratus cloud,
because it is thicker.
Unlike a stratus cloud, a nimbostratus cloud typically brings with it the threat
of moderate to heavy precipitation. In some cases, the precipitation may evaporate
before reaching the ground, a phenomenon known as virga.
Next Topic: Precipitation
Weather Topic: What is Rain?
Home - Education - Precipitation - Rain
Next Topic: Shelf Clouds
Precipitation in the form of water droplets is called rain.
Rain generally has a tendency to fall with less intensity over a greater period
of time, and when rainfall is more severe it is usually less sustained.
Rain is the most common form of precipitation and happens with greater frequency
depending on the season and regional influences. Cities have been shown to have
an observable effect on rainfall, due to an effect called the urban heat island.
Compared to upwind, monthly rainfall between twenty and forty miles downwind of
cities is 30% greater.
Next Topic: Shelf Clouds
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