Weather Alert in California

Recent Locations: Clyo, GA   San Joaquin, CA   West Hollywood, CA  
Current Alerts for San Joaquin, CA: Heat Advisory

Flood Watch issued September 1 at 4:16PM PDT until September 3 at 11:00PM PDT by NWS Hanford CA

AREAS AFFECTED: Kaiser to Rodgers Ridge; Kings Canyon NP; Grant Grove Area; Sequoia NP; South End of the Upper Sierra; Kern River Valley; Piute Walker Basin; Tehachapi; Indian Wells Valley; Mojave Desert Slopes; Mojave Desert

DESCRIPTION: * WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...A portion of central California, including the following areas, Grant Grove Area, Indian Wells Valley, Kaiser to Rodgers Ridge, Kern River Valley, Kings Canyon NP, Mojave Desert, Mojave Desert Slopes, Piute Walker Basin, Sequoia NP, South End of the Upper Sierra and Tehachapi. * WHEN...From Tuesday morning through Wednesday evening. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. Low-water crossings may be flooded. * ADDITIONAL DETAILS... - Any slow moving thunderstorms will create heavy rainfall at times with long periods of rain. - http://www.weather.gov/safety/flood

INSTRUCTION: You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.

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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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