Weather Alert in California
Red Flag Warning issued June 20 at 9:48PM PDT until June 22 at 5:00AM PDT by NWS Hanford CA
AREAS AFFECTED: West Side Hills; San Joaquin Valley
DESCRIPTION: ...RED FLAG WARNING IN EFFECT FOR THE MOJAVE SLOPES AND DESERT, THE WEST HILLS AND WESTERN PORTIONS OF THE SAN JOAQUIN VALLEY... * AFFECTED AREA...West Side Hills and the San Joaquin Valley. * WIND...Northwestly 15 to 20 mph with gusts to 35 mph. * HUMIDITY...Minimum RH values down to 10 to 20 percent. * HIGHEST THREAT...Across the West Hills and the Western portionsof the San Joaquin Valley. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended.
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 Graupel?
Home - Education - Precipitation - Graupel
Next Topic: Hail
Graupel is a form of precipitation that is created by atmospheric conditions
which cause supercooled water droplets to contact snow crystals and freeze to
their surface.
Sometimes known as soft hail or snow pellets, graupel is delicate and easily
destroyed by touch. Whereas hail usually falls during severe weather, graupel
doesn't require such conditions to form, and can form in mild precipitation
similar to situations which produce snowfall.
Next Topic: Hail
Weather Topic: What are Hole Punch Clouds?
Home - Education - Cloud Types - Hole Punch Clouds
Next Topic: Mammatus Clouds
A hole punch cloud is an unusual occurrence when a disk-shaped
hole appears in a cirrostratus, cirrocumulus, or altocumulus cloud.
When part of the cloud forms ice crystals, water droplets in the surrounding area
of the cloud evaporate. The effect of this process produces a large elliptical
gap in the cloud. The hole punch cloud formation is rare, but it is not specific
to any geographic area.
Other names which have been used to describe this phenomena include fallstreak hole,
skypunch, and cloud hole.
Next Topic: Mammatus Clouds
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