Weather Alerts for Arizona

Recent Locations: Phoenix Sky Harbor International Airport, AZ

1. Extreme Heat Warning for: Aguila Valley; Tonopah Desert; Gila Bend; Northwest Pinal County; West Pinal County; Apache Junction/Gold Canyon; Sonoran Desert Natl Monument

2. Extreme Heat Warning for: Cave Creek/New River; New River Mesa; Rio Verde/Salt River; Fountain Hills/East Mesa; Superior; Tonto Basin; Dripping Springs; Globe/Miami

3. Extreme Heat Warning for: Grand Canyon Country

4. Extreme Heat Warning for: Lake Havasu and Fort Mohave; Northwest Deserts; Lake Mead National Recreation Area; San Bernardino County-Upper Colorado River Valley; Lake Mead National Recreation Area

5. Extreme Heat Warning for: Northern Gila County; Yavapai County Valleys and Basins

6. Extreme Heat Warning for: Northwest Valley; Buckeye/Avondale; Deer Valley; Central Phoenix; North Phoenix/Glendale; Scottsdale/Paradise Valley; East Valley; South Mountain/Ahwatukee; Southeast Valley/Queen Creek

7. Extreme Heat Warning for: Parker Valley; Kofa; Yuma; Central La Paz; Southeast Yuma County; Gila River Valley

8. Extreme Heat Warning for: San Carlos

9. Extreme Heat Warning for: Western Pima County Including Ajo/Organ Pipe Cactus National Monument; Tohono O'odham Nation including Sells; Tucson Metro Area including Tucson/Green Valley/Marana/Vail; South Central Pinal County including Eloy/Picacho Peak State Park; Southeast Pinal County including Kearny/Mammoth/Oracle; Upper Gila River and Aravaipa Valleys including Clifton/Safford

10. Heat Advisory for: Mazatzal Mountains; Pinal/Superstition Mountains; Southeast Gila County

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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).

National Weather Forecast--Current

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

National Weather Forecast for Tomorrow

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

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.

Weather Topic: What are Stratus Clouds?

Home - Education - Cloud Types - Stratus Clouds

Next Topic: Wall Clouds

Stratus clouds are similar to altostratus clouds, but form at a lower altitude and are identified by their fog-like appearance, lacking the distinguishing features of most clouds.

Stratus clouds are wider than most clouds, and their base has a smooth, uniform look which is lighter in color than a nimbostratus cloud. The presence of a stratus cloud indicates the possibility of minor precipitation, such as drizzle, but heavier precipitation does not typically arrive in the form of a stratus cloud.

Next Topic: Wall Clouds

Weather Topic: What are Altocumulus Clouds?

Home - Education - Cloud Types - Altocumulus Clouds

Next Topic: Altostratus Clouds

Similar to cirrocumulus clouds, altocumulus clouds are characterized by cloud patches. They are distinguished by larger cloudlets than cirrocumulus clouds but are still smaller than stratocumulus clouds.

Altocumulus clouds most commonly form in middle altitudes (between 2 and 5 km) and may resemble, at times, the shape of a flying saucer. These uncommon formations, called altocumulus lenticularis, are created by uplift in the atmosphere and are most often seen in close proximity to mountains.

Next Topic: Altostratus Clouds