Weather Alert in Washington
Red Flag Warning issued August 25 at 6:32AM PDT until August 26 at 9:00PM PDT by NWS Spokane WA
AREAS AFFECTED: East Washington Central Cascades; East Portion of North Cascades National Park / Lake Chelan National Recreation Area; East Washington North Cascades; Methow Valley
DESCRIPTION: ...HOT, DRY, AND UNSTABLE CONDITIONS FOR MONDAY AND TUESDAY ALONG WITH THE POTENTIAL FOR ISOLATED THUNDERSTORMS WITH GUSTY OUTFLOW WINDS... .Hot, dry, and unstable conditions are forecast along the East Slopes of the Central and Northern Cascades as well as the Methow Valley Monday and Tuesday. In addition, we are monitoring the potential for isolated thunderstorms on Monday and Tuesday afternoons that could result in new fire starts along with gusty outflow winds. * Affected Area: East Washington Central Cascades (Zone 696), East Portion of North Cascades National Park/Lake Chelan National Recreation Area (Zone 697), East Washington North Cascades (Zone 698) and Methow Valley (Zone 704). * Winds: Southeast around 5 mph in the afternoon shifting to northwest in the evening, except gusty outflow winds near thunderstorms. * Timing: Afternoon and evening for both Monday and Tuesday. * Relative Humidities: Below 4000 feet: 13 to 20 percent. Above 4000 feet: 20 to 30 percent. * Temperatures: Below 4000 feet: 90 to 102 degrees. Above 4000 feet: 75 to 90 degrees. * Lightning: A 5-10 percent chance of dry thunderstorms late Monday afternoon into the evening. A 20-25 percent chance of thunderstorms Tuesday afternoon and evening mainly over the higher terrain. * Impacts: Hot, dry, unstable conditions may lead to rapid fire growth on any new or existing fires. Isolated thunderstorms will bring the potential for new fire starts, as well as gusty outflow winds.
INSTRUCTION: A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly.
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Weather Topic: What are Altostratus Clouds?
Home - Education - Cloud Types - Altostratus Clouds
Next Topic: Cirrocumulus Clouds
Altostratus clouds form at mid to high-level altitudes
(between 2 and 7 km) and are created by a warm, stable air mass which causes
water vapor
to condense as it rise through the atmosphere. Usually altostratus clouds are
featureless sheets characterized by a uniform color.
In some cases, wind punching through the cloud formation may give it a waved
appearance, called altostratus undulatus. Altostratus clouds
are commonly seen with other cloud formations accompanying them.
Next Topic: Cirrocumulus Clouds
Weather Topic: What are Cirrostratus Clouds?
Home - Education - Cloud Types - Cirrostratus Clouds
Next Topic: Cirrus Clouds
Cirrostratus clouds are high, thin clouds that form above
20,000 feet and are made mostly of ice crystals. They sometimes look like giant
feathers, horse tails, or curls of hair in the sky.
These clouds are pushed by the jet stream and can move at high speeds reaching
100 mph.
What do they indicate?
They indicate that a precipitation is likely within 24 hours.
Next Topic: Cirrus Clouds
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