Weather Alert in Alaska
Red Flag Warning issued June 19 at 12:31PM AKDT until June 21 at 12:00AM AKDT by NWS Fairbanks AK
AREAS AFFECTED: White Mountains and High Terrain South of the Yukon River; Chatanika River Valley
DESCRIPTION: The National Weather Service in Fairbanks has issued a Red Flag Warning for lightning, which is in effect from 4 PM Friday to midnight AKDT Friday night. * AFFECTED AREA...White Mountains and High Terrain South of the Yukon River and Chatanika River Valley. * TIMING...From 4 PM Friday to midnight AKDT Friday night. * THUNDERSTORM COVERAGE INDEX...4. * WINDS...Southwest 3 to 7 mph. * HUMIDITY...As low as 32 percent. * TEMPERATURES...Lows in the mid 50s. Highs in the mid 80s. * IMPACTS...Rapid ignition, growth and spread of fires will be possible. Frequent lightning can promote new fire starts. Hot and dry conditions may lead to rapid spread of fires.
INSTRUCTION: A Red Flag Warning means that conditions are occurring or will occur which could lead to the development of large and dangerous fires. It is directed toward fire agencies, and through them, to the public. Please advise the appropriate officials or fire crews in the field of this Red Flag Warning.
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Weather Topic: What is Hail?
Home - Education - Precipitation - Hail
Next Topic: Hole Punch Clouds
Hail is a form of precipitation which is recognized by large solid balls or
clumps of ice. Hail is created by thunderstorm clouds with strong updrafts of wind.
As the hailstones remain in the updraft, ice is deposited onto them until their
weight becomes heavy enough for them to fall to the earth's surface.
Hail storms can cause significant damage to crops, aircrafts, and man-made structures,
despite the fact that the duration is usually less than ten minutes.
Next Topic: Hole Punch Clouds
Weather Topic: What are Mammatus Clouds?
Home - Education - Cloud Types - Mammatus Clouds
Next Topic: Nimbostratus Clouds
A mammatus cloud is a cloud with a unique feature which resembles
a web of pouches hanging along the base of the cloud.
In the United States, mammatus clouds tend to form in the warmer months, commonly
in the Midwest and eastern regions.
While they usually form at the bottom of a cumulonimbis cloud, they can also form
under altostratus, altocumulus, stratocumulus, and cirrus clouds. Mammatus clouds
warn that severe weather is close.
Next Topic: Nimbostratus Clouds
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