Weather Alerts for California

Recent Locations: Garden Grove, CA  

1. High Surf Advisory for: San Luis Obispo County Beaches; Santa Barbara County Central Coast Beaches

2. High Surf Advisory for: Ventura County Beaches

3. Wind Advisory for: Death Valley National Park; Western Mojave Desert; Eastern Mojave Desert, Including the Mojave National Preserve; Western Clark and Southern Nye County; Spring Mountains-Red Rock Canyon; Las Vegas Valley; Southern Clark County

4. Wind Advisory for: Eastern Sierra Slopes of Inyo County; Owens Valley

5. Wind Advisory for: Indian Wells Valley; Mojave Desert Slopes; Mojave Desert

6. Wind Advisory for: San Francisco Peninsula Coast; Santa Cruz Mountains; East Bay Hills; Northern Monterey Bay

7. Wind Advisory for: Santa Lucia Mountains and Los Padres National Forest; Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park; Southern Monterey Bay and Big Sur Coast

8. Winter Storm Warning for: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada

9. Winter Weather Advisory for: Del Norte Interior; Northern Humboldt Interior; Northern Trinity; Southern Trinity

10. Winter Weather Advisory for: Greater Lake Tahoe Area; Greater Lake Tahoe Area

11. Winter Weather Advisory for: Mono

12. Winter Weather Advisory for: South Central Siskiyou County; North Central and Southeast Siskiyou County

13. Winter Weather Advisory for: Western Siskiyou County

14. Winter Weather Advisory for: Yosemite NP outside of the valley; Upper San Joaquin River

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Current U.S. National Radar--Current

The Current National Weather Radar is shown below with a UTC Time (subtract 5 hours from UTC to get Eastern Time).

Current U.S. National Radar

National Weather Forecast--Current

The Current National Weather Forecast and National Weather Map are shown below.

Today's National Weather Map

National Weather Forecast for Tomorrow

Tomorrow National Weather Forecast and Tomorrow National Weather Map are show below.

Tomorrows National Weather Map

North America Water Vapor (Moisture)

This map shows recent moisture content over North America. Bright and colored areas show high moisture (ie, clouds); brown indicates very little moisture present; black indicates no moisture.

North American Water Vapor Map

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