Weather Alerts for Arizona

1. Blowing Dust Advisory for: Eastern Cochise County Below 5000 Feet including Douglas/Willcox

2. High Wind Warning for: Little Colorado River Valley in Coconino County; Little Colorado River Valley in Navajo County; Little Colorado River Valley in Apache County

3. Red Flag Warning for: Chuska Mountains and Defiance Plateau; Little Colorado River Valley in Apache County; White Mountains

4. Red Flag Warning for: Chuska Mountains and Defiance Plateau; Little Colorado River Valley in Apache County; White Mountains

5. Red Flag Warning for: Eastern Pima-Southeastern Pinal-Santa Cruz-Western Cochise; Southern Graham-Central and Eastern Cochise-Southern Greenlee-Lower Elevations of the San Carlos Apache Nation in Graham County; Mountains above 5500 feet

6. Red Flag Warning for: Eastern Pima-Southeastern Pinal-Santa Cruz-Western Cochise; Southern Graham-Central and Eastern Cochise-Southern Greenlee-Lower Elevations of the San Carlos Apache Nation in Graham County; Mountains above 5500 feet

7. Red Flag Warning for: Little Colorado River Valley in Coconino County; Little Colorado River Valley in Navajo County

8. Red Flag Warning for: Pima-South Central Pinal-Tohono Oodham Nation; Northern Graham-Northern Greenlee-White and Gila Mountains

9. Red Flag Warning for: Southern Gila County/Tonto National Forest Foothills

10. Wind Advisory for: Eastern Cochise County Below 5000 Feet including Douglas/Willcox

11. Wind Advisory for: Kaibab Plateau; Marble and Glen Canyons; Grand Canyon Country; Coconino Plateau; Yavapai County Mountains; Northeast Plateaus and Mesas Hwy 264 Northward; Chinle Valley; Chuska Mountains and Defiance Plateau; Western Mogollon Rim; Eastern Mogollon Rim; White Mountains; Yavapai County Valleys and Basins; Oak Creek and Sycamore Canyons; Black Mesa Area; Northeast Plateaus and Mesas South of Hwy 264

12. Wind Advisory for: Upper San Pedro River Valley including Sierra Vista/Benson; Chiricahua Mountains including Chiricahua National Monument; Dragoon/Mule/Huachuca and Santa Rita Mountains including Bisbee/Canelo Hills/Madera Canyon

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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 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

Weather Topic: What are Stratus Clouds?

Home - Education - Cloud Types - Stratus Clouds

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

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