Weather Alert in Arizona
Severe Thunderstorm Warning issued September 12 at 8:33PM MST until September 12 at 9:00PM MST by NWS Flagstaff AZ
AREAS AFFECTED: Apache, AZ; Navajo, AZ
DESCRIPTION: SVRFGZ The National Weather Service in Flagstaff has issued a * Severe Thunderstorm Warning for... Navajo County in north central Arizona... Apache County in northeastern Arizona... * Until 900 PM MST. * At 833 PM MST, a severe thunderstorm was located over Hawley Lake, or 24 miles southeast of Show Low, moving northeast at 40 mph. HAZARD...Ping pong ball size hail and 60 mph wind gusts. SOURCE...Radar indicated. IMPACT...People and animals outdoors will be injured. Expect hail damage to roofs, siding, windows, and vehicles. Expect wind damage to roofs, siding, and trees. * Locations impacted include... Horseshoe Cienega Lake, Cyclone Lake, Earl Park Lake, Hawley Lake, Greens Peak, McNary, Christmas Tree Lake, Sunrise Lake, Pinetop Country Club and Greer Lakes Recreation Area. This includes the following highways... State Route 260 between mile markers 360 and 385. State Route 473 between mile markers 0 and 10. State Route 273 between mile markers 378 and 381. This includes the following recreation areas and campgrounds... Los Burros Campground, Brown Creek Campground and Los Burros Campground.
INSTRUCTION: Seek shelter inside a well-built structure and stay away from windows. This storm is capable of producing damaging winds and large hail.
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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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