Weather Alert in Wyoming
Red Flag Warning issued August 12 at 1:14PM MDT until August 14 at 8:00PM MDT by NWS Riverton WY
AREAS AFFECTED: Sweetwater County/Rock Springs BLM/Flaming Gorge NRA; Natrona County/Casper BLM; Granite/Green/Ferris/Rattlesnake Mountains; Casper Mountain
DESCRIPTION: The National Weather Service in Riverton has issued a Red Flag Warning, which is in effect from noon Wednesday to 8 PM MDT Thursday. * AFFECTED AREA: In Central WY Fire Zones...280...289...300. In Southwest WY Fire Zone....279. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In Southwest WY...Sweetwater. * IMPACTS: Low Humidities...Hot Temperatures...and Strong Gusty Winds could cause erratic fire behavior. Conditions will improve overnight as winds decrease and humidities recover, however critical fire weather conditions will then return by around 1200 Thursday afternoon. * WIND: West 10 to 20 mph with gusts up to 30 mph on Wednesday afternoon, becoming light overnight, then west 10 to 15 with gusts to around 25 mph on Thursday. * THUNDERSTORMS: Increasing thunderstorm potential on Thursday afternoon across zones 279 and 289, with most likely chances between 1200 and 1800. * HUMIDITY: As low as 10 percent through 2000 Wednesday then recovering to around 35 to 45 percent overnight. Thursday, RH values around 12 to 15 percent in the afternoon and evening. * TEMPERATURES: Highs in the upper 80s. Lows in the mid 50s.
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 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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