Weather Alert in Utah
Red Flag Warning issued August 2 at 2:57AM MDT until August 2 at 10:00PM MDT by NWS Salt Lake City UT
AREAS AFFECTED: Southern Ashley National Forest; Tavaputs Plateau; Manti National Forest; San Rafael Swell; Henry Mountains; Grand Staircase
DESCRIPTION: ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM MONDAY AFTERNOON THROUGH MONDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 483, 484, 488, 489, 494, AND 498... * AFFECTED AREA...Fire Weather Zone 483 Southern Ashley National Forest, Fire Weather Zone 484 Tavaputs Plateau, Fire Weather Zone 488 Manti National Forest, Fire Weather Zone 489 San Rafael Swell, Fire Weather Zone 494 Henry Mountains and Fire Weather Zone 498 Grand Staircase. * WINDS...Southwest 10 to 20 mph with gusts to 25 to 35 mph both Saturday and Monday afternoons. Lighter winds are forecast for Sunday, remaining in the 5 to 10 mph range with gusts of 10 to 20 mph. * RELATIVE HUMIDITY...Falling into the 5 to 9 percent range each afternoon with very poor overnight recoveries. * IMPACTS...Critical fire weather conditions are expected. Any new fire starts or existing fires may spread rapidly.
INSTRUCTION: A Red Flag Warning means that critical fire weather conditions are either occurring now...or are imminent. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. A Fire Weather Watch means that there is a potential for critical fire weather conditions. Continue to monitor for the latest forecasts and for possible Red Flag Warnings.
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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
Weather Topic: What is Precipitation?
Home - Education - Precipitation - Precipitation
Next Topic: Rain
Precipitation can refer to many different forms of water that
may fall from clouds. Precipitation occurs after a cloud has become saturated to
the point where its water particles are more dense than the air below the cloud.
In most cases, precipitation will reach the ground, but it is not uncommon for
precipitation to evaporate before it reaches the earth's surface.
When precipitation evaporates before it contacts the ground it is called Virga.
Graupel, hail, sleet, rain, drizzle, and snow are forms of precipitation, but fog
and mist are not considered precipitation because the water vapor which
constitutes them isn't dense enough to fall to the ground.
Next Topic: Rain
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