Weather Alert in California
Flood Watch issued August 23 at 8:42AM PDT until August 23 at 10:00PM PDT by NWS Reno NV
AREAS AFFECTED: Mono; Mineral and Southern Lyon Counties; Greater Reno-Carson City-Minden Area
DESCRIPTION: * WHAT...Flash flooding caused by excessive rainfall is possible. Increased risk for flash flooding along the Davis, Conner, and Tamarack burn scar areas. * WHERE...Portions of east central California, including the following area, Mono County and western Nevada, including the following areas, Greater Reno-Carson City-Minden Area and Mineral and Southern Lyon Counties. * WHEN...From noon PDT today through 10pm PDT evening. * IMPACTS...Excessive runoff may result in flooding of creeks, streams, and other low-lying and flood-prone locations. Flash flooding and debris flows are possible for area burn scars including the Davis, Conner, and Tamarack scars. * ADDITIONAL DETAILS... - Increased monsoon moisture and training storm may produce areas of flash flooding this afternoon. - 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 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
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
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