Weather Alert in Minnesota
Blizzard Warning issued February 17 at 1:58AM 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 expected. Total snow accumulations between 10 and 18 inches. Easterly winds gusting as high as 60 mph. * WHERE...Southern Cook and Southern Lake Counties. This includes the Tribal Lands of the Grand Portage Reservation. * WHEN...From 9 PM this evening to noon CST Thursday. * IMPACTS...The strong winds and weight of snow on tree limbs may down power lines and could cause sporadic power outages. Whiteout conditions are expected and will make travel treacherous and potentially life-threatening, especially along Highway 61 on the North Shore. * ADDITIONAL DETAILS...Expect terrain enhancement to snowfall totals and snowfall rates. The heaviest snowfall rates will be Tuesday night and Wednesday morning.
INSTRUCTION: Do not travel unless you must due to emergencies only. If you must travel, especially along Highway 61 on the North Shore, have a winter survival kit with you. If you get stranded, stay with your vehicle. Call 511 or visit www.511mn.org for Minnesota road information.
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Weather Topic: What are Wall Clouds?
Home - Education - Cloud Types - Wall Clouds
Next Topic: Altocumulus Clouds
A wall cloud forms underneath the base of a cumulonimbus cloud,
and can be a hotbed for deadly tornadoes.
Wall clouds are formed by air flowing into the cumulonimbus clouds, which can
result in the wall cloud descending from the base of the cumulonimbus cloud, or
rising fractus clouds which join to the base of the storm cloud as the wall cloud
takes shape.
Wall clouds can be very large, and in the Northern Hemisphere they generally
form at the southern edge of cumulonimbus clouds.
Next Topic: Altocumulus Clouds
Weather Topic: What are Altostratus Clouds?
Home - Education - Cloud Types - Altostratus Clouds
Next Topic: Cirrocumulus Clouds
Altostratus clouds form at mid to high-level altitudes
(between 2 and 7 km) and are created by a warm, stable air mass which causes
water vapor
to condense as it rise through the atmosphere. Usually altostratus clouds are
featureless sheets characterized by a uniform color.
In some cases, wind punching through the cloud formation may give it a waved
appearance, called altostratus undulatus. Altostratus clouds
are commonly seen with other cloud formations accompanying them.
Next Topic: Cirrocumulus Clouds
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