Weather Alerts for Chelan & Douglas Counties

Issued by the National Weather Service

Fire Weather Watch  FIRE WEATHER WATCH   Fire Weather Watch
CHELAN & DOUGLAS COUNTIES

Areas Affected:
Central Cascade Mountains - Central Cascade Valleys - South Central Cascade Valleys
Effective: Fri, 8/17 2:00pm Updated: Thu, 8/16 8:00pm Urgency: Future
Expires: Fri, 8/17 9:00pm Severity:  Moderate  Certainty: Possible

 
Details:
...ISOLATED TO SCATTERED DRY THUNDERSTORMS LIKELY OVERNIGHT
TONIGHT AND FRIDAY FAR EASTERN ZONES...
...BREEZY CONDITIONS WITH LOW RH NEAR THE CASCADES FRIDAY
AFTERNOON AND EVENING...
.A surge of monsoonal moisture combined with an approaching
disturbance will bring isolated dry thunderstorms to extreme
eastern Washington and the Idaho Panhandle late Thursday night
and into Friday morning. This threat will end over the Palouse
and Spokane area and the northern Idaho Panhandle late Friday
morning. However, in the Idaho Panhandle mainly south of
Interstate 90 thunderstorms will become wetter during the day
Friday, but also increase in areal coverage to scattered.
In addition a dry cold front will produce breezy conditions with
low relative humidity through the Cascade gaps Friday afternoon
and evening.
...FIRE WEATHER WATCH IN EFFECT FROM FRIDAY AFTERNOON THROUGH
FRIDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE CENTRAL
CASCADES VALLEYS AND THE EAST WASHINGTON CENTRAL CASCADE MOUNTAINS...
The National Weather Service in Spokane has issued a Fire Weather
Watch for wind and low relative humidity, which is in effect from
Friday afternoon through Friday evening.
* Affected Area: Fire Weather Zone 676 East Washington South
Central Cascade Valleys (Zone 676)...Fire Weather Zone 677
East Washington Central Cascade Valleys (Zone 677) and Fire
Weather Zone 682 East Washington Central Cascade Mountains
(Zone 682).
* Winds: Increasing to west 15 to 20 mph Friday afternoon and
continuing into Friday evening. In the Kittitas and Wenatchee
Valleys evening gusts to 30 mph.
* Relative Humidities: 15 to 22 percent during the afternoon and
early evening.
* Impacts: Breezy conditions and low relative humidities during
the late afternoon and the evening recovery period will promote
rapid fire spread of existing fires and any new fire starts.

Information:
A Fire Weather Watch means that critical fire weather conditions
are forecast to occur. Listen for later forecasts and possible
Red Flag Warnings.

Air Quality Alert  AIR QUALITY ALERT   Air Quality Alert
CHELAN & DOUGLAS COUNTIES

Areas Affected:
Adams - Asotin - Chelan - Douglas - Ferry - Garfield - Grant - Lincoln - Okanogan - Pend Oreille - Spokane - Stevens - Whitman
Effective: Thu, 8/16 8:10am Updated: Thu, 8/16 8:00pm Urgency: Unknown
Expires: Fri, 8/17 8:15am Severity: Unknown Certainty: Unknown

 
Details:
An Air Quality Alert has been issued by the following agencies:
Washington Department of Ecology in Spokane
Washington Department of Ecology in Yakima
Nez Perce Tribe
Colville Confederated Tribes
Spokane Tribe
Kalispel Indian
Community Coeur d`Alene Tribe
Spokane Regional Clean Air Agency
Kootenai Tribe of Idaho
Washington Counties within the Air Quality
Alert Include:
Adams
Asotin
Chelan
Douglas
Ferry
Stevens
Pend Oreille
Garfield
Grant
Lincoln
Okanogan
Spokane
Whitman
Idaho Counties within the Air Quality Alert Include:
Boundary
Bonner
Kootenai
Shoshone
Benewah
Latah
Nez Perce
Lewis
Clearwater
Idaho
...AIR QUALITY ALERT UNTIL 10AM FRIDAY...
Unhealthy air will be common across eastern Washington and north
Idaho due to the large wildfires currently burning around the region.
The Idaho Department of Environmental Quality (DEQ) has issued a Stage
1 Air Quality Forecast and Caution to notify residents of Benewah,
Bonner, Boundary, Kootenai, Shoshone, Latah, Nez Perce, Lewis,
Clearwater, and Idaho Counties of degraded air quality. Due to smoke
from wildfires around the western U.S. and areas in north Idaho and
is forecast to continue to be degraded for the next several days. The
pollutant of concern is Fine Particulate Matter (PM2.5).
Children, the elderly, and individuals with respiratory illnesses
are most at risk of serious health effects. If you experience
respiratory distress, you should speak with your physician.
Some improvement in ventilation will be possible toward the end of
the week. The air quality alert will be reassessed on Friday for the
weekend based on these trends and upcoming weather conditions.
For additional information on wildland fire smoke impacting
Washington visit the Washington smoke blog at
http://wasmoke.blogspot.com and for current Washington air quality
levels, visit https://fortress.wa.gov/ecy/enviwa/ or airnow.gov.
You may also contact your local air quality agency.
Additional information for health recommendations, air quality, and
wildfire information for Idaho can be found on the Idaho Smoke
Information Blog at http://idsmoke.blogspot.com/