Weather Alert in California

Recent Locations: Oakland, CA  

Fire Weather Watch issued July 29 at 12:10AM PDT until July 30 at 11:00PM PDT by NWS Eureka CA

AREAS AFFECTED: Lower Middle Klamath; Trinity

DESCRIPTION: ...ISOLATED TO SCATTERED DRY THUNDERSTORMS POSSIBLE WEDNESDAY AROUND KLAMATH MOUNTAINS... ..Isolated to scattered dry thunderstorms are possible Wednesday afternoon/evening with the highest confidence in NE Trinity County.. The National Weather Service in Eureka has issued a Fire Weather Watch, which is in effect from Wednesday morning through Wednesday evening. * AFFECTED AREA...Fire weather zone 204. Fire weather zone 283. * THUNDERSTORMS...Dry Thunderstorms with associated lightning are of highest concern for NE Trinity, but are also possible for areas in the southwest region of the Klamath Mountains of California. * OUTFLOW WINDS...Gusty erratic outflow winds are possible. * IMPACTS...Lightning strikes may start fires.

INSTRUCTION: A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings.

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Weather Topic: What are Nimbostratus Clouds?

Home - Education - Cloud Types - Nimbostratus Clouds

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

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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