Weather Alert in South Dakota
Red Flag Warning issued February 26 at 10:04PM MST until February 27 at 6:00PM MST by NWS Rapid City SD
AREAS AFFECTED: Bennett County Area; Mellette and Todd Counties
DESCRIPTION: ...RED FLAG WARNING IN EFFECT FROM NOON MST/100 PM CST TO 600 PM MST/700 PM CST FRIDAY FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 315, 317, 322, 326, 333, 334, AND 335... .Very dry air will affect parts of northeastern Wyoming as well as far southwestern into south-central South Dakota Friday afternoon. Minimum relative humidities will drop to 15 to 20 percent as northwest winds blow at 10 to 25 mph with gusts from 25 to 40 mph, strongest over south-central South Dakota. Antecedent D1 to D2 drought conditions will exacerbate the fire potential. The combination of low humidity values and gusty winds will create critical fire weather conditions on Friday for these areas. 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 noon MST /1 PM CST/ to 6 PM MST /7 PM CST/ Friday. * AFFECTED AREA...Fire Weather Zones 333 Bennett County Area and 334 Mellette and Todd Counties. * WINDS...Northwest 15 to 25 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 15 to 18 percent. * IMPACTS...The combination of gusty winds and low relative humidity would 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 are Cirrostratus Clouds?
Home - Education - Cloud Types - Cirrostratus Clouds
Next Topic: Cirrus Clouds
Cirrostratus clouds are high, thin clouds that form above
20,000 feet and are made mostly of ice crystals. They sometimes look like giant
feathers, horse tails, or curls of hair in the sky.
These clouds are pushed by the jet stream and can move at high speeds reaching
100 mph.
What do they indicate?
They indicate that a precipitation is likely within 24 hours.
Next Topic: Cirrus Clouds
Weather Topic: What is Condensation?
Home - Education - Precipitation - Condensation
Next Topic: Contrails
Condensation is the process which creates clouds, and therefore
it is a crucial process in the water cycle.
Condensation is the change of matter from a state of gas into a state of liquid,
and it happens because water molecules release heat into the atmosphere and
become organized into a more closely packed structure, what we might see as
water droplets.
Water is always present in the air around us as a vapor, but it's too small for
us to see. When water undergoes the process of condensation it becomes organized
into visible water droplets. You've probably seen condensation happen before on the
surface of a cold drink!
Next Topic: Contrails
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