Weather Alerts for California
1. Extreme Heat Warning for: Del Norte Interior; Northern Humboldt Interior
2. Extreme Heat Warning for: Northern Trinity; Southern Trinity
3. Extreme Heat Warning for: Western Siskiyou County; Central Siskiyou County; Eastern Curry County and Josephine County; Jackson County
4. Heat Advisory for: Lassen-Eastern Plumas-Eastern Sierra Counties
5. Heat Advisory for: Northeastern Mendocino Interior; Northern Lake County; Southern Lake County
6. Heat Advisory for: Northwestern Mendocino Interior; Southeastern Mendocino Interior
7. Heat Advisory for: Shasta Lake Area / Northern Shasta County; Burney Basin / Eastern Shasta County; Northern Sacramento Valley; Central Sacramento Valley; Mountains Southwestern Shasta County to Western Colusa County; Northeast Foothills/Sacramento Valley; Western Plumas County/Lassen Park
8. Heat Advisory for: South Central Siskiyou County; North Central and Southeast Siskiyou County; Northeast Siskiyou and Northwest Modoc Counties; Modoc County; Klamath Basin; Northern and Eastern Klamath County and Western Lake County; Central and Eastern Lake County
9. Heat Advisory for: Southern Humboldt Interior
10. Heat Advisory for: Surprise Valley California; Mineral and Southern Lyon Counties; Greater Reno-Carson City-Minden Area; Western Nevada Basin and Range including Pyramid Lake; Northern Washoe County
11. Heat Advisory for: West Side Mountains north of 198; Los Banos - Dos Palos; Merced - Madera - Mendota; Planada - Le Grand - Snelling; Coalinga - Avenal; West Side of Fresno and Kings Counties; Caruthers - San Joaquin - Selma; Fresno-Clovis; West Side Mountains South of 198; Buttonwillow - Lost Hills - I5; Delano-Wasco-Shafter; Hanford - Corcoran - Lemoore; Visalia - Porterville - Reedley; Buena Vista; Bakersfield; Southeast San Joaquin Valley; South End San Joaquin Valley; Mariposa Madera Foothills; Mariposa-Madera Lower Sierra; Fresno-Tulare Foothills; Fresno-Tulare Lower Sierra; South End Sierra Foothills; South End of the Lower Sierra; Yosemite Valley; San Joaquin River Canyon; Kern River Valley
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North America Water Vapor (Moisture)
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Weather Topic: What are Nimbostratus Clouds?
Home - Education - Cloud Types - Nimbostratus Clouds
Next Topic: Precipitation
A nimbostratus cloud is similar to a stratus cloud in its formless,
smooth appearance. However, a nimbostratus cloud is darker than a stratus cloud,
because it is thicker.
Unlike a stratus cloud, a nimbostratus cloud typically brings with it the threat
of moderate to heavy precipitation. In some cases, the precipitation may evaporate
before reaching the ground, a phenomenon known as virga.
Next Topic: Precipitation
Weather Topic: What is Rain?
Home - Education - Precipitation - Rain
Next Topic: Shelf Clouds
Precipitation in the form of water droplets is called rain.
Rain generally has a tendency to fall with less intensity over a greater period
of time, and when rainfall is more severe it is usually less sustained.
Rain is the most common form of precipitation and happens with greater frequency
depending on the season and regional influences. Cities have been shown to have
an observable effect on rainfall, due to an effect called the urban heat island.
Compared to upwind, monthly rainfall between twenty and forty miles downwind of
cities is 30% greater.
Next Topic: Shelf Clouds
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