Weather Alert in Montana
Winter Storm Watch issued March 31 at 12:51PM MDT until April 3 at 12:00PM MDT by NWS Great Falls MT
AREAS AFFECTED: Cascade County below 5000ft; Judith Basin County and Judith Gap; Fergus County below 4500ft; Little Belt and Highwood Mountains; Snowy and Judith Mountains; Big Belt, Bridger and Castle Mountains; Gallatin and Madison County Mountains and Centennial Mountains
DESCRIPTION: * WHAT...Heavy, wet snow possible. Total snow accumulations between 4 and 8 inches possible at elevations below 5,000 feet and 8 to 16 inches possible above 5,000 feet. Winds could gust as high as 40 mph. * WHERE...Portions of central, north central, and southwest Montana. * WHEN...From Thursday afternoon through Friday morning. * IMPACTS...Slushy snow covered roads and significantly reduced visibility at times may make travel very difficult. The hazardous conditions could impact the Thursday evening and Friday morning commutes. Those in the backcountry should ensure they are prepared for dangerous conditions. * ADDITIONAL DETAILS...The combination of heavy, wet snow and winds may cause power outages and tree damage.
INSTRUCTION: Monitor the latest forecasts for updates on this situation. To see a graphical representation of the degree of stress on young livestock please visit our webpage and select Local Programs then Cold Air Advisory for Newborn Livestock.
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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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