Weather Alert in Minnesota
Fire Weather Watch issued May 9 at 3:56AM CDT until May 11 at 10:00PM CDT by NWS Duluth MN
AREAS AFFECTED: Koochiching; North St. Louis; North Itasca; Central St. Louis; North Cass; South Itasca; South Cass; Crow Wing; Northern Aitkin; South Aitkin; Carlton/South St. Louis; Pine
DESCRIPTION: ...CRITICAL FIRE WEATHER CONDITIONS POSSIBLE ACROSS NORTHEASTERN MINNESOTA SUNDAY... .Breezy southwesterly winds gusting to 25 to 30 mph Sunday along with relative humidity values as low as 20 percent may lead to critical fire weather conditions across northeastern Minnesota late Sunday morning into Sunday evening. RH values will improve late Sunday evening as the air near the ground begins to cool around and after sunset. Additional breezy southwesterly to southerly winds and low relative humidity values on Monday and Tuesday may lead to additional critical fire weather conditions. * AFFECTED AREA...In Minnesota, Koochiching, North St. Louis, North Itasca, Central St. Louis, North Cass, South Itasca, South Cass, Crow Wing, Northern Aitkin, South Aitkin, Carlton and South St. Louis and Pine. * WINDS...Southwest 10 to 15 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 20 percent. * IMPACTS...This combination of wind and minimum RH could lead to the rapid spread of fires.
INSTRUCTION: A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings.
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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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