Weather Alert in Washington
Flood Watch issued March 23 at 4:41PM PDT until March 26 at 11:00AM PDT by NWS Pendleton OR
AREAS AFFECTED: Upper Slopes of the Eastern Washington Cascades Crest; Lower Slopes of the Eastern Washington Cascades Crest
DESCRIPTION: River Levels for the Yakima River remain high and rain along the Cascade crest on Tuesday is expected to raise water levels in the Yakima River at Easton back above minor flood stage Tuesday night through Thursday morning. * WHAT...Flooding caused by excessive rainfall is possible. * WHERE...A portion of south central Washington, including the following areas, Lower Slopes of the Eastern Washington Cascades Crest and Upper Slopes of the Eastern Washington Cascades Crest. The watch is being issued primarily for the Yakima River near Easton and would affect Easton and Elk Meadows. * WHEN...From Wednesday morning through Thursday morning. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Low-water crossings may be flooded. * ADDITIONAL DETAILS... - The current river level for the Yakima River at Easton is 51.14 feet at 4 PM. Flood stage is at 51.3 feet. The Yakima River at Easton is forecast to rise to 51.3 feet Wednesday morning, peak at 51.36 feet Wednesday afternoon and drop below flood stage late Wednesday night. - http://www.weather.gov/safety/flood
INSTRUCTION: You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.
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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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