Weather Alert in Texas
Flood Warning issued April 30 at 2:10PM CDT until May 1 at 6:04AM CDT by NWS Fort Worth TX
AREAS AFFECTED: Dallas, TX
DESCRIPTION: ...The Flood Warning continues for the following rivers in Texas... Rowlett Creek Near Sachse affecting Dallas County. * WHAT...Minor flooding is forecast. * WHERE...Rowlett Creek near Sachse. * WHEN...Until tomorrow morning. * IMPACTS...At 27.0 feet, Moderate flooding along the creek is expected. * ADDITIONAL DETAILS... - At 1:45 PM CDT Wednesday the stage was 18.5 feet. - Bankfull stage is 24.0 feet. - Flood stage is 24.0 feet. - Forecast...The river is expected to rise above flood stage late this afternoon to a crest of 26.2 feet late this afternoon. It will then fall below flood stage this evening.
INSTRUCTION: Do not drive cars through flooded areas. Caution is urged when walking near riverbanks. Additional information is available at www.water.noaa.gov/wfo/FWD.
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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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