Weather Alert in California

Recent Locations: Grand Terrace, CA  
Current Alerts for Grand Terrace, CA: Wind Advisory Winter Storm Warning

Winter Weather Advisory issued February 17 at 12:03PM PST until February 19 at 10:00AM PST by NWS Medford OR

AREAS AFFECTED: Northeast Siskiyou and Northwest Modoc Counties; Modoc County; Klamath Basin; Northern and Eastern Klamath County and Western Lake County; Central and Eastern Lake County

DESCRIPTION: * WHAT...Snow. Additional snow accumulations 2 to 5 inches, except up to 8 inches over higher terrain. Winds gusting as high as 40 mph over high and exposed terrain. * WHERE...Klamath Basin and Winter Rim in Klamath county and Lake County, Northeast Siskiyou and Northwest Modoc Counties, and Modoc County. Including the locations of...Dorris, Macdoel, Tulelake, Adin, Alturas, Canby, Day, Likely, Klamath Falls, Olene, Chemult, Crescent, Beatty, Bly, Sprague River, Adel, Fort Rock, Lakeview, Valley Falls, Paisley. This also includes the following passes or notable locations... Cedar Pass on state highway 239 at 6323 ft. Warner Mountain Summit on state highway 140 at 5850 ft. * WHEN...Until 10 AM PST Thursday. * IMPACTS...Travel may be difficult and delays in your commute. The hazardous conditions could impact the evening and morning commutes. * ADDITIONAL DETAILS...Precipitation will become lighter and more showers tonight into Wednesday with lighter accumulations. A period of heavier snow is expected Wednesday night into Thursday. Visit weather.gov/mfr/winter for additional snow probabilities

INSTRUCTION: Slow down and use caution while traveling. In California, call 511 or visit quickmap.dot.ca.gov for road information. In Oregon, call 511 or visit tripcheck.com for road information.

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Weather Topic: What is Graupel?

Home - Education - Precipitation - Graupel

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

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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