Weather Alerts for California
1. Air Quality Alert for: Coachella Valley
2. Air Quality Alert for: Imperial County Southwest; Imperial County West; Imperial Valley
3. Flood Advisory for: San Luis Obispo, CA; Santa Barbara, CA
4. Flood Advisory for: Santa Barbara, CA; Ventura, CA
5. Special Weather Statement for: Modoc County
6. Wind Advisory for: Imperial County Southwest
7. Wind Advisory for: Imperial County West; Imperial Valley
8. Wind Advisory for: Indian Wells Valley; Mojave Desert
9. Wind Advisory for: Mojave Desert Slopes
10. Wind Advisory for: Northern Sacramento Valley; Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta
11. Wind Advisory for: San Diego County Deserts; San Gorgonio Pass Near Banning
12. Wind Advisory for: San Francisco; Marin Coastal Range; Coastal North Bay Including Point Reyes National Seashore; San Francisco Peninsula Coast; Northern Salinas Valley/Hollister Valley and Carmel Valley; Southern Monterey Bay and Big Sur Coast
13. Wind Advisory for: Western Mojave Desert
14. Winter Weather Advisory for: Eastern Sierra Slopes of Inyo County
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Current U.S. National Radar--Current
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North America Water Vapor (Moisture)
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Weather Topic: What is Freezing Rain?
Home - Education - Precipitation - Freezing Rain
Next Topic: Graupel
Freezing rain is a condition where precipitation which has fallen in the form of
water droplets reaches temperatures which are below freezing and freezes upon
coming into contact
with surface objects. The result of this precipitation is a glaze of ice which
can be damaging to plants and man-made structures. A severe onset of freezing
rain which results in a very thick glaze of ice is known as an ice storm.
Next Topic: Graupel
Weather Topic: What is Hail?
Home - Education - Precipitation - Hail
Next Topic: Hole Punch Clouds
Hail is a form of precipitation which is recognized by large solid balls or
clumps of ice. Hail is created by thunderstorm clouds with strong updrafts of wind.
As the hailstones remain in the updraft, ice is deposited onto them until their
weight becomes heavy enough for them to fall to the earth's surface.
Hail storms can cause significant damage to crops, aircrafts, and man-made structures,
despite the fact that the duration is usually less than ten minutes.
Next Topic: Hole Punch Clouds
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