Weather Alert in Montana
Winter Storm Watch issued March 11 at 2:15PM MDT until March 15 at 6:00AM MDT by NWS Billings MT
AREAS AFFECTED: Musselshell; Treasure; Northern Stillwater; Powder River; Golden Valley; Northern Big Horn; Southern Rosebud; Judith Gap; Southern Big Horn; Northern Sweet Grass; Melville Foothills; Northeastern Yellowstone; Southern Wheatland; Southwestern Yellowstone; Sheridan Foothills
DESCRIPTION: * WHAT...Heavy snow possible. Total snow accumulations between 7 and 14 inches possible. Winds could gust as high as 30 mph. * WHERE...Portions of central, south central, and southeast Montana and north central Wyoming. * WHEN...From Thursday evening through late Saturday night. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Travel could be very difficult to impossible. The hazardous conditions could impact the Thursday evening and Friday morning commutes. Conditions may threaten young livestock. * ADDITIONAL DETAILS...Accumulating snowfall is expected to develop Thursday night and continue through Saturday night. The heaviest snowfall potential is currently across areas mainly north of I-90 and I-94 in the Watch area, but placement of heaviest snow may change. Please check the latest forecasts.
INSTRUCTION: People should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order.
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Weather Topic: What is Precipitation?
Home - Education - Precipitation - Precipitation
Next Topic: Rain
Precipitation can refer to many different forms of water that
may fall from clouds. Precipitation occurs after a cloud has become saturated to
the point where its water particles are more dense than the air below the cloud.
In most cases, precipitation will reach the ground, but it is not uncommon for
precipitation to evaporate before it reaches the earth's surface.
When precipitation evaporates before it contacts the ground it is called Virga.
Graupel, hail, sleet, rain, drizzle, and snow are forms of precipitation, but fog
and mist are not considered precipitation because the water vapor which
constitutes them isn't dense enough to fall to the ground.
Next Topic: Rain
Weather Topic: What are Shelf Clouds?
Home - Education - Cloud Types - Shelf Clouds
Next Topic: Sleet
A shelf cloud is similar to a wall cloud, but forms at the front
of a storm cloud, instead of at the rear, where wall clouds form.
A shelf cloud is caused by a series of events set into motion by the advancing
storm; first, cool air settles along the ground where precipitation has just fallen.
As the cool air is brought in, the warmer air is displaced, and rises above it,
because it is less dense. When the warmer air reaches the bottom of the storm cloud,
it begins to cool again, and the resulting condensation is a visible shelf cloud.
Next Topic: Sleet
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