Weather Alert in Washington
Fire Weather Watch issued September 2 at 2:20AM PDT until September 4 at 9:00PM PDT by NWS Spokane WA
AREAS AFFECTED: East Washington Central Cascades
DESCRIPTION: The National Weather Service in Spokane has issued a Fire Weather Watch for Hot, dry, unstable conditions, which is in effect from Wednesday morning through Thursday evening. * Affected Area: East Washington Central Cascades (Zone 696). * Winds: Terrain driven winds 2 to 5 mph becoming northwest 5 to 10 mph in the evening. * Relative Humidities: Minimum humidity: 13 to 19 percent. Humidity recoveries on midslopes within thermal belts of 25-35% * Temperatures: 85 to 100 degrees. * Impacts: Hot, dry, unstable conditions will lead to the potential for rapid fire growth on new or existing 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
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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