Weather Alert in South Dakota
Red Flag Warning issued March 17 at 1:26PM MDT until March 18 at 7:00PM MDT by NWS Rapid City SD
AREAS AFFECTED: Fall River County Area; Southern Campbell; Weston County Plains
DESCRIPTION: ...CRITICAL FIRE WEATHER CONDITIONS WEDNESDAY ACROSS PORTIONS OF NORTHEASTERN WYOMING AND FAR SOUTHWESTERN SOUTH DAKOTA... .Drier and warmer air will spread into portions of northeastern Wyoming and far southwestern South Dakota on Wednesday. The combination of relative humidities as low as 15 percent and west- northwest winds gusting as high as 35 MPH will result in critical fire weather conditions. The National Weather Service in Rapid City has issued a Red Flag Warning for gusty winds and low relative humidity, which is in effect from 10 AM to 7 PM MDT Wednesday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zones 315 Southern Campbell, 317 Weston County Plains, and 322 Fall River County Area. * WINDS...West-northwest 10 to 20 MPH with gusts up to 35 MPH. * RELATIVE HUMIDITY...As low as 15 percent. * IMPACTS...The combination of gusty winds and low relative humidity will produce critical fire weather conditions.
INSTRUCTION: A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior.
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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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