Weather Alert in California
Flood Watch issued February 23 at 8:21PM PST until February 24 at 10:00PM PST by NWS Eureka CA
AREAS AFFECTED: Southeastern Mendocino Interior
DESCRIPTION: ...The Flood Watch continues for the following rivers in California... Russian River near Hopland affecting Southeastern Mendocino Interior zone. For the Russian River...including Hopland...flooding is possible. * WHAT...Flooding is possible. * WHERE...Russian River near Hopland. * WHEN...From Tuesday afternoon to Tuesday evening. * IMPACTS...At 15.0 feet, Flooding of Highway 175 is expected at the approaches to the Russian River bridge. Expect flooding of cropland on the right bank of river. * ADDITIONAL DETAILS... - At 7:45 PM PST Monday the stage was 3.4 feet. - Forecast...Flood stage may be reached tomorrow afternoon. - Flood stage is 15.0 feet. - http://www.weather.gov/safety/flood
INSTRUCTION: If you are in the watch area, remain alert to possible flooding. Residents and those with interests near the river should monitor rising water levels and be prepared for possible Flood Warnings. Please report observed flooding to local emergency services or law enforcement and request they pass this information to the National Weather Service when you can do so safely. Stay tuned to further developments by listening to your local radio, television, or NOAA Weather Radio for further information. Additional information is available at weather.gov/eka. The next statement will be issued Tuesday morning at 900 AM PST.
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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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