Weather Alert in Washington
Fire Weather Watch issued July 11 at 8:24PM PDT until July 13 at 9:00PM PDT by NWS Spokane WA
AREAS AFFECTED: East Washington Central Cascades
DESCRIPTION: ...HOT, DRY, WINDY SUNDAY AFTERNOON AND EVENING... .Hot and dry conditions will be in place on Sunday. Westerly winds will increase through the day across the East Slopes and into the Western Columbia Basin. There is a 30-50% chance for wind gusts of 30 mph or stronger along the ridgetops of the Cascades, into the foothills, and on to the Waterville Plateau. The National Weather Service in Spokane has issued a Fire Weather Watch for wind and low relative humidity, which is in effect from Sunday afternoon through Sunday evening. * Affected Area: East Washington Central Cascades (Zone 696). * Winds: West 10 to 20 mph with gusts up to 30 mph. * Relative Humidities: 18 to 25 percent in eastern half of zone 696 including lower river valleys around Leavenworth, Ardenvoir, and lower Lake Chelan increasing to 30-40% closer to the crest. * Impacts: Rapid fire spread is likely with any new fires.
INSTRUCTION: A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings.
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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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