Weather Alert in Arizona
Flash Flood Warning issued August 26 at 3:38PM MST until August 26 at 6:00PM MST by NWS Flagstaff AZ
AREAS AFFECTED: Coconino, AZ
DESCRIPTION: At 336 PM MST, Doppler radar indicated thunderstorms producing heavy rain over the White Sage burn scar. Up to 1.5 inches of rain have fallen. Flash flooding is ongoing or expected to begin shortly. HAZARD...Life-threatening flash flooding. Thunderstorms producing flash flooding in and around the White Sage burn scar. SOURCE...Radar. IMPACT...Life threatening flash flooding of areas in and around the White Sage burn scar. Some locations that will experience flash flooding include... Condor Viewing Site, House Rock Overlook, House Rock and Le Fevre Overlook. This includes the following creeks, washes and rivers... House Rock Wash, Coyote Wash, Kaibab Wash and Rock Canyon.
INSTRUCTION: Immediately move out of and away from creeks and washes in the White Sage burn scar. Flash flooding is occurring or imminent. Turn Around, Don't Drown if you encounter flood waters while driving. Avoid recently burned areas and downstream locations. Life-threatening flooding of creeks, roads and normally dry washes will occur. Rockslides and mudslides will likely occur in steep terrain.
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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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