Weather Alert in Minnesota
Winter Storm Watch issued February 15 at 2:32PM CST until February 19 at 12:00PM CST by NWS Duluth MN
AREAS AFFECTED: Southern Lake/North Shore; Southern Cook/North Shore
DESCRIPTION: * WHAT...Blizzard conditions possible. There is an 80 to 95 percent chance for total snow accumulations in excess of 6 inches and a 50 to 90 percent chance for total snow accumulations in excess of 12 inches. Ice accumulations around a light glaze possible. Winds could gust as high as 50 mph. * WHERE...Southern Cook and Southern Lake Counties. This includes the Tribal Lands of the Grand Portage Reservation. * WHEN...From Tuesday evening through Thursday morning. * IMPACTS...Travel could be very difficult to impossible. Areas of blowing snow could significantly reduce visibility. The hazardous conditions could impact the Tuesday evening, Wednesday, and Thursday morning commutes. * ADDITIONAL DETAILS...Expect terrain and lake enhancement to snowfall totals and snowfall rates. The heaviest snowfall rates will be Tuesday night and Wednesday morning. Winds will be strongest Tuesday evening into Wednesday morning. The best potential for a wintry mix will be along and southwest of Silver Bay Tuesday evening into Wednesday morning.
INSTRUCTION: Prepare for possible blizzard conditions, especially whiteout conditions along Highway 61 on the North Shore. Continue to monitor the latest forecasts for updates on this situation. Persons should consider delaying travel. If travel is absolutely necessary, drive with extreme caution. Consider taking a winter storm kit along with you, including such items as tire chains, booster cables, flashlight, shovel, blankets and extra clothing. Also take water, a first aid kit, and anything else that would help you survive in case you become stranded.
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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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