Weather Alert in Michigan
Winter Storm Watch issued March 31 at 3:40PM EDT until April 2 at 8:00PM EDT by NWS Gaylord MI
AREAS AFFECTED: Western Chippewa; Central Chippewa; Southeast Chippewa; Western Mackinac; Eastern Mackinac; Mackinac Island/Bois Blanc Island
DESCRIPTION: * WHAT...Heavy mixed precipitation possible. Total snow and sleet accumulations between 2 and 4 inches and ice accumulations between one tenth and one quarter of an inch possible. Winds could gust 25 to 35 mph from the east. * WHERE...A portion of Eastern Upper Michigan. * WHEN...From late Wednesday night through Thursday evening. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Thursday morning and evening commutes. * ADDITIONAL DETAILS...Precipitation is expected to start as snow early Thursday morning and continue through midday before transitioning to more sleet and freezing rain during the afternoon. Temperatures are expected to warm above freezing by Thursday evening.
INSTRUCTION: Monitor the latest forecasts for updates on this situation.
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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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