... Red flag warning remains in effect until 10 PM PDT this
evening for wind and low relative humidity for central Washington
Cascade valleys and the western Columbia Basin...
* affected area: fire weather zone 673 East Washington northern
Columbia Basin (zone 673) and fire weather zone 677 East
Washington central Cascade valleys (zone 677).
* Winds: west 10 to 20 mph with gusts up to 25 mph, especially
through this evening and then again Wednesday afternoon and
* Relative humidities: 8 to 23 percent.
* Impacts: gusty winds and low relative humidity on dry fuels
will promote rapid fire spread.
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 very warm temperatures
can contribute to extreme fire behavior.
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Fire Weather Warning
Issued: 5:18 AM PDT Jul. 18, 2018 – National Weather Service