Weather Alert in Washington
Red Flag Warning issued July 8 at 11:57AM PDT until July 9 at 8:00PM PDT by NWS Spokane WA
AREAS AFFECTED: Western Columbia Basin; Eastern Columbia Basin / Palouse / Spokane Area; Lower Palouse / Snake River
DESCRIPTION: ...HOT, DRY, AND WINDY TUESDAY AND WEDNESDAY... .Hot and very dry conditions will be in place on Tuesday. Winds will increase through the day with gusts 15 to 25 mph from the East Slopes to the Palouse. Locally stronger winds will develop late Tuesday afternoon and evening in the foothills of the Cascades and across the Waterville Plateau producing gusts around 30 mph. Winds will decrease Tuesday night. A dry cold front will sweep through the region on Wednesday delivering stronger winds region- wide. Humidity levels increase on Wednesday but remain near critical levels. * Affected Area: Western Columbia Basin (Zone 707), Eastern Columbia Basin -Palouse -Spokane Area (Zone 708) and Lower Palouse -Snake River (Zone 709). * Winds: Tuesday: West to southwest 10 to 20 mph with gusts to 25 mph. Wednesday: West to southwest 15 to 25 mph gusts around 40 mph. * Relative Humidities: 8 to 15 percent on Tuesday. 18 to 25 percent on Wednesday. * Impacts: Rapid fire spread is likely with any new fires.
INSTRUCTION: A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior.
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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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