Weather Alert in California
Winter Weather Advisory issued February 17 at 8:38PM PST until February 18 at 4:00PM PST by NWS San Francisco CA
AREAS AFFECTED: Eastern Santa Clara Hills
DESCRIPTION: ...WINTER WEATHER ADVISORY THROUGH WEDNESDAY AFTERNOON... .Cold air will continue to move into the region today through Wednesday afternoon with accumulating snowfall expected across areas above 3000 feet in the Santa Lucia range and the mountains of San Benito and eastern Santa Clara Counties. Total snow accumulations range from 4 to 10 inches with the highest peaks reaching accumulations of 15 to 25 inches. If planning travel to the higher elevations of the Central Coast and eastern Santa Clara County, allow extra time to reach your destination safely. * WHAT...Accumulating snow for elevations above 3000 feet. Elevations below 3000 feet will see no accumulating snow to a dusting. Above 3000 feet total snow accumulations of 4 to 8 inches. * WHERE...Elevations above 3000 feet for the Santa Clara Hills. * WHEN...Until 4 PM PST Wednesday. * IMPACTS...Slick, snow-covered roads, like Hwy 130, and hiking trails. Hikers, outdoor enthusiasts may encounter dangerous winter conditions above the snow level. Heavier snow showers could produce limited visibilities. Downed trees and power outages possible. * ADDITIONAL DETAILS...Wind gusts 25 to 40 mph above 2000 feet. The combination of wind and snow will reduce visibilities.
INSTRUCTION: N/A
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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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