Weather Alert in Washington
Red Flag Warning issued August 28 at 10:10AM PDT until August 28 at 9:00PM PDT by NWS Seattle WA
AREAS AFFECTED: West Slopes of the North Cascades Generally above 1500 Feet; West Slopes of the Central Cascades Generally above 1500 Feet; East Portion of the Olympic Mountains
DESCRIPTION: * AFFECTED AREA...Fire Weather Zone 658 West Slopes of the North Cascades Generally above 1500 Feet, Fire Weather Zone 659 West Slopes of the Central Cascades Generally above 1500 Feet and Fire Weather Zone 661 East Portion of the Olympic Mountains. * THUNDERSTORMS...Thunderstorms are favored along the eastern slopes of the Olympic mountains and more so in the Cascades this afternoon and evening. Some brief heavy rain or isolated wetting rains are possible, but lightning strikes on very dry fuel are capable of new fire starts. * OUTFLOW WINDS...Outflow winds of 25 to 30 mph are possible. Outflow winds can occur ahead of and behind storms and cause erratic wind directions. * IMPACTS...Scattered lightning in dry fuels can cause multiple fire starts. Thunderstorms can also bring sudden sharp wind shifts on existing fires, causing rapid changes in a fire's rate of spread and direction of spread. Thunderstorm outflow winds can be a threat for several hours following the start of a new lightning-caused fire. If a fire were to begin, air quality may diminish in the surrounding area. With lightning occurrences having started earlier this week and thunderstorms expected again today, multiple days in a row of lightning strikes on our dry fuels could result in a critical number of new wildfires. * THUNDERSTORMS...A few lightning strikes occurred in the higher terrain of the Cascades mountains yesterday and that will resume this afternoon and evening. Multiple days in a row of lightning strikes on our dry fuels could result in a critical number of new wildfires.
INSTRUCTION: A Red Flag Warning means that critical fire weather conditions are either imminent or occurring now. Any fires that develop will likely spread quickly. Outdoor burning is not recommended.
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Weather Topic: What is Freezing Rain?
Home - Education - Precipitation - Freezing Rain
Next Topic: Graupel
Freezing rain is a condition where precipitation which has fallen in the form of
water droplets reaches temperatures which are below freezing and freezes upon
coming into contact
with surface objects. The result of this precipitation is a glaze of ice which
can be damaging to plants and man-made structures. A severe onset of freezing
rain which results in a very thick glaze of ice is known as an ice storm.
Next Topic: Graupel
Weather Topic: What is Hail?
Home - Education - Precipitation - Hail
Next Topic: Hole Punch Clouds
Hail is a form of precipitation which is recognized by large solid balls or
clumps of ice. Hail is created by thunderstorm clouds with strong updrafts of wind.
As the hailstones remain in the updraft, ice is deposited onto them until their
weight becomes heavy enough for them to fall to the earth's surface.
Hail storms can cause significant damage to crops, aircrafts, and man-made structures,
despite the fact that the duration is usually less than ten minutes.
Next Topic: Hole Punch Clouds
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