Weather Alerts for California

Recent Locations: Moreno Valley, CA  
Current Alerts for Moreno Valley, CA: Flood Watch Winter Storm Watch

1. Flood Watch for: Cuyama Valley; Santa Clarita Valley; San Luis Obispo County Interior Valleys; San Luis Obispo County Mountains; Ventura County Beaches; Ventura County Inland Coast; Lake Casitas; Ojai Valley; Central Ventura County Valleys; Malibu Coast; Los Angeles County Beaches; Palos Verdes Hills; Los Angeles County Inland Coast including Downtown Los Angeles; Western Santa Monica Mountains Recreational Area; Eastern Santa Monica Mountains Recreational Area; Calabasas and Agoura Hills; Western San Fernando Valley; Eastern San Fernando Valley; Southeastern Ventura County Valleys; Santa Susana Mountains; Interstate 5 Corridor; Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains; Western Antelope Valley Foothills; Eastern Antelope Valley Foothills; Antelope Valley; Los Angeles County San Gabriel Valley

2. Flood Watch for: Northern Ventura County Mountains

3. Flood Watch for: San Diego County Coastal Areas; San Bernardino and Riverside County Valleys-The Inland Empire; San Diego County Inland Valleys; San Bernardino County Mountains; Riverside County Mountains; Santa Ana Mountains and Foothills; San Diego County Mountains; Orange County Coastal; Orange County Inland

4. Flood Watch for: San Luis Obispo County Beaches; San Luis Obispo County Inland Central Coast; Santa Lucia Mountains; Southern Salinas Valley; Santa Barbara County Central Coast Beaches; Santa Barbara County Inland Central Coast; Santa Ynez Valley; Santa Barbara County Southwestern Coast; Santa Barbara County Southeastern Coast; Santa Ynez Mountains Western Range; Santa Ynez Mountains Eastern Range; Santa Barbara County Interior Mountains; Southern Ventura County Mountains

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

6. High Wind Warning for: Santa Lucia Mountains and Los Padres National Forest

7. High Wind Warning for: Santa Lucia Mountains; San Luis Obispo County Mountains

8. Wind Advisory for: Apple and Lucerne Valleys; Coachella Valley; San Diego County Deserts; San Gorgonio Pass Near Banning

9. Wind Advisory for: Cuyama Valley

10. 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

11. Wind Advisory for: Imperial County Southwest

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

13. Wind Advisory for: Los Banos - Dos Palos; Merced - Madera - Mendota; Planada - Le Grand - Snelling; Mariposa Madera Foothills

14. Wind Advisory for: Marin Coastal Range; Sonoma Coastal Range; Coastal North Bay Including Point Reyes National Seashore

15. Wind Advisory for: Mendocino Coast; Northwestern Mendocino Interior; Northeastern Mendocino Interior; Southwestern Mendocino Interior; Southeastern Mendocino Interior; Northern Lake County; Southern Lake County

16. Wind Advisory for: Morongo Basin; Cadiz Basin

17. Wind Advisory for: North Bay Interior Mountains; East Bay Interior Valleys

18. Wind Advisory for: Orange County Coastal; Orange County Inland

19. Wind Advisory for: Salton Sea; Imperial County West; Imperial Valley

20. Wind Advisory for: San Diego County Coastal Areas; San Diego County Inland Valleys

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

22. Wind Advisory for: San Luis Obispo County Beaches; San Luis Obispo County Inland Central Coast; Santa Barbara County Central Coast Beaches; Santa Barbara County Inland Central Coast

23. Wind Advisory for: Santa Barbara County Southeastern Coast; Santa Ynez Mountains Eastern Range

24. Wind Advisory for: Santa Barbara County Southwestern Coast; Santa Ynez Mountains Western Range

25. Wind Advisory for: Santa Lucia Mountains and Los Padres National Forest

26. Wind Advisory for: Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley

27. Wind Advisory for: Southern Salinas Valley/Arroyo Seco and Lake San Antonio; Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park; Northern Salinas Valley/Hollister Valley and Carmel Valley; Southern Monterey Bay and Big Sur Coast

28. Wind Advisory for: Southern Salinas Valley; San Luis Obispo County Interior Valleys

29. Wind Advisory for: West Side Mountains north of 198; West Side Mountains South of 198; Buena Vista

30. Winter Storm Warning for: Frazier Mountain Communities

31. Winter Storm Warning for: Greater Lake Tahoe Area; Greater Lake Tahoe Area

32. Winter Storm Warning for: Interstate 5 Corridor; Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains

33. Winter Storm Warning for: Mono

34. Winter Storm Warning for: Piute Walker Basin; Tehachapi

35. Winter Storm Warning for: Santa Barbara County Interior Mountains; Southern Ventura County Mountains; Northern Ventura County Mountains

36. Winter Storm Warning for: Shasta Lake Area / Northern Shasta County; Mountains Southwestern Shasta County to Western Colusa County

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

38. Winter Storm Warning for: Yosemite NP outside of the valley; Upper San Joaquin River; Kaiser to Rodgers Ridge; Kings Canyon NP; Grant Grove Area; Sequoia NP; South End of the Upper Sierra

39. Winter Storm Watch for: San Bernardino County Mountains; Riverside County Mountains

40. Winter Storm Watch for: San Diego County Mountains

41. Winter Weather Advisory for: Eastern Sierra Slopes of Inyo County; White Mountains of Inyo County

42. Winter Weather Advisory for: Lassen-Eastern Plumas-Eastern Sierra Counties

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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

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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 are Shelf Clouds?

Home - Education - Cloud Types - Shelf Clouds

Shelf Clouds Next Topic: Sleet

A shelf cloud is similar to a wall cloud, but forms at the front of a storm cloud, instead of at the rear, where wall clouds form.

A shelf cloud is caused by a series of events set into motion by the advancing storm; first, cool air settles along the ground where precipitation has just fallen. As the cool air is brought in, the warmer air is displaced, and rises above it, because it is less dense. When the warmer air reaches the bottom of the storm cloud, it begins to cool again, and the resulting condensation is a visible shelf cloud.

Next Topic: Sleet

Weather Topic: What is Snow?

Home - Education - Precipitation - Snow

Snow Next Topic: Stratocumulus Clouds

Snow is precipitation taking the form of ice crystals. Each ice crystal, or snowflake, has unique characteristics, but all of them grow in a hexagonal structure. Snowfall can last for sustained periods of time and result in significant buildup of snow on the ground.

On the earth's surface, snow starts out light and powdery, but as it begins to melt it tends to become more granular, producing small bits of ice which have the consistency of sand. After several cycles of melting and freezing, snow can become very dense and ice-like, commonly known as snow pack.

Next Topic: Stratocumulus Clouds