Weather Alert in Arizona
Winter Storm Watch issued February 18 at 5:17AM MST until February 20 at 11:00AM MST by NWS Flagstaff AZ
AREAS AFFECTED: Kaibab Plateau; Western Mogollon Rim; Eastern Mogollon Rim
DESCRIPTION: * WHAT...For the Winter Storm Warning, heavy snow expected along with blowing snow. Total snow accumulations between 4 to 10 inches. Winds gusting as high as 65 mph. For the Winter Storm Watch, heavy snow possible. Total snow accumulations between 3 and 9 inches possible. Winds could gust as high as 45 mph. * WHERE...Mogollon Rim, and Kaibab Plateau. * WHEN...For the Winter Storm Warning, until 8 PM MST this evening. For the Winter Storm Watch, from Thursday afternoon through Friday morning. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Travel is not recommended as heavy snowfall and low visibility will create dangerous driving conditions. Widespread blowing snow could significantly reduce visibility. The hazardous conditions will impact the Wednesday morning and evening commutes. Very strong winds could cause extensive damage to trees and power lines. Roads, and especially bridges and overpasses, will likely become slick and hazardous. * ADDITIONAL DETAILS... Forecast snowfall amounts from 5 AM MST Today to 8 PM MST Today... Forest Lakes: 6 to 8" Fredonia: 1 to 2" Doney Park: 4 to 6" Flagstaff: 6 to 8" Munds Park: 6 to 10" Pine-Strawberry: 4 to 6" Williams: 5 to 8" Heber-Overgaard: 1 to 2" Jacob Lake: 6 to 8"
INSTRUCTION: If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For the latest road conditions and closures go to az511.gov, or call 5 1 1. Persons should consider delaying all travel. Motorists should use extreme caution if travel is absolutely necessary. Monitor the latest forecasts for updates on this situation.
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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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