Weather Alert in Missouri
Flood Warning issued March 9 at 7:55PM CDT until March 11 at 8:00PM CDT by NWS St Louis MO
AREAS AFFECTED: Franklin, MO; Jefferson, MO
DESCRIPTION: ...The National Weather Service in St Louis has issued a Flood Warning for the following rivers in Missouri... Meramec River at Pacific. River forecasts are based on observed precipitation and forecast precipitation for the next 48 hours. * WHAT...Minor flooding is forecast. * WHERE...Meramec River at Pacific. * WHEN...Until Wednesday evening. * IMPACTS...At 15.4 feet, Hunters Ford Road is closed near this height. * ADDITIONAL DETAILS... - At 7:30 PM CDT Monday the stage was 14.9 feet. - Forecast...The river will rise above flood stage late this evening to 15.4 feet tomorrow morning. It will then fall below flood stage early tomorrow afternoon to 3.8 feet Friday morning. It will rise to 4.6 feet Saturday evening. It will then fall again and remain below flood stage. - Flood stage is 15.0 feet.
INSTRUCTION: Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding. Rainfall heavier than forecast could cause river levels to rise even higher than predicted. The National Weather Service will monitor this developing situation and issue follow up statements as conditions change. This product, along with additional weather and stream information, is available at https://water.noaa.gov/wfo/lsx
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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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