Weather Alert in North Dakota
Flood Advisory issued August 29 at 4:44PM CDT until August 29 at 7:45PM CDT by NWS Grand Forks ND
AREAS AFFECTED: Cass, ND
DESCRIPTION: * WHAT...Urban and small stream flooding caused by excessive rainfall is expected. * WHERE...A portion of southeast North Dakota, including the following county, Cass. * WHEN...Until 745 PM CDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Overflowing poor drainage areas. * ADDITIONAL DETAILS... - At 444 PM CDT, trained weather spotters reported heavy rain near Veterans Blvd and Sheyenne Street due to thunderstorms. This is causing urban and small stream flooding. - South of I-94 and west of I-29 is the most likely place to experience minor flooding. - Some locations that will experience flooding include... Southwestern Fargo and West Fargo.
INSTRUCTION: Safety message - Turn around, don't drown. Don't travel through flooded areas. Most flood deaths occur in vehicles.
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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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