* WHAT...Hot conditions with temperatures up to 95 degrees. This
will pose a moderate to major risk of heat-related illness.
* WHERE...Lower Slopes of the Eastern Washington Cascades Crest.
* WHEN...Until 9 PM PDT this evening.
* IMPACTS...Heat will significantly increase the risk of
heat-related illnesses for those who are sensitive to heat,
especially those without effective cooling or adequate hydration.
* WHAT...Hot conditions with temperatures up to 100 degrees. This
will pose a moderate to major risk of heat-related illness.
* WHERE...Portions of central, north central, and northeast Oregon
and central, south central, and southeast Washington.
* WHEN...Until 9 PM PDT this evening.
* IMPACTS...Heat will significantly increase the risk of
heat-related illnesses for those who are sensitive to heat,
especially those without effective cooling or adequate hydration.
...CRITICAL FIRE WEATHER CONDITIONS CONTINUE THIS WEEKEND...
.Hot, dry and unstable conditions have been observed across
eastern Oregon. A Pacific frontal system tracking across eastern
Oregon and far southeast Washington will bring another round of
showers and thunderstorms on Sunday. Storms are not expected to
bring as much lightning as what was observed on Labor Day, but the
potential lightning is enough to warrant Fire Weather Watches.
* AFFECTED AREA...Fire Weather Zones 641 Lower Columbia Basin of
Oregon, 643 Northern Blue Mountains of Oregon, 644 Central
Blue Mountains, 645 Wallowa District and 693 Southeast
Washington Grande Ronde Valley.
* IMPACTS...New fire starts and rapid fire spread due to outflow
winds.
* THUNDERSTORMS...Scattered thunderstorms producing abundant
lightning and gusty outflow winds. Most storms will be
accompanied by light rain.
* OUTFLOW WINDS...Outflow winds are always possible with storms,
and these storms will be capable of 30 to 40 mph wind gusts.
* AFFECTED AREA...Fire Weather Zone 658 West Slopes of the North
Cascades Generally above 1500 Feet.
* RELATIVE HUMIDITY...As low as 15 to 20 percent.
* TEMPERATURES...Up to 85.
* HAINES...Mid-level Haines 6.
* IMPACTS...A dry and unstable air mass with warm temperatures
can contribute to active fire behavior. In Western Washington,
significant growth on existing fires takes place under such
conditions. If a fire were to begin, air quality may diminish
in the surrounding area.
* AFFECTED AREA...Fire Weather Zone 659 West Slopes of the
Central Cascades Generally above 1500 Feet.
* RELATIVE HUMIDITY...As low as 15 to 20 percent.
* TEMPERATURES...Up to 90.
* HAINES...Mid-level Haines 6.
* IMPACTS...A dry and unstable air mass with warm temperatures
can contribute to active fire behavior. In Western Washington,
significant growth on existing fires takes place under such
conditions. If a fire were to begin, air quality may diminish
in the surrounding area.
* AFFECTED AREA...Fire Weather Zone 652 West Portion of the
Olympic Mountains and Fire Weather Zone 661 East Portion of
the Olympic Mountains.
* RELATIVE HUMIDITY...As low as 20 to 25 percent.
* TEMPERATURES...Up to 85.
* HAINES...Mid-level Haines 6.
* IMPACTS...A dry and unstable air mass with warm temperatures
can contribute to active fire behavior. In Western Washington,
significant growth on existing fires takes place under such
conditions. If a fire were to begin, air quality may diminish
in the surrounding area.
...CRITICAL FIRE WEATHER CONDITIONS CONTINUE THIS WEEKEND...
.Hot, dry and unstable conditions have been observed across
eastern Oregon. There are scattered thunderstorms in the southern
Deschutes National Forest that prompted Red Flag Warnings. A
Pacific frontal system tracking across eastern Oregon and far
southeast Washington will bring another round of showers and
thunderstorms on Sunday. Storms are not expected to bring as much
lightning as what was observed on Labor Day, but the potential lightning
is enough to warrant Fire Weather Watches.
The National Weather Service in Pendleton has issued a Fire
Weather Watch for abundant lightning, which is in effect from
Sunday morning through Sunday evening.
* AFFECTED AREA...Fire Weather Zones 641 Lower Columbia Basin of
Oregon, 643 Northern Blue Mountains of Oregon, 644 Central
Blue Mountains, 645 Wallowa District and 693 Southeast
Washington Grande Ronde Valley.
* IMPACTS...New fire starts and rapid fire spread due to outflow
winds.
* THUNDERSTORMS...Scattered thunderstorms producing abundant
lightning and gusty outflow winds. Most storms will be
accompanied by light rain.
* OUTFLOW WINDS...Outflow winds are always possible with storms,
and these storms will be capable of 30 to 40 mph wind gusts.
* AFFECTED AREA...In Oregon, Fire Weather Zone 688 Mt. Hood
National Forest Region. In Washington, Fire Weather Zone 634
Southern Gifford Pinchot National Forest and Fire Weather Zone
635 Mt. Adams Ranger District of the Gifford-Pinchot National
Forest.
* WINDS...East 5 to 10 mph with gusts up to 15 mph.
* RELATIVE HUMIDITY...As low as 15 percent.
* IMPACTS...Conditions may be favorable for rapid fire spread
which may threaten life and property. Use extra caution with
potential ignition sources, especially in grassy areas. Outdoor
burning is not recommended.
* ADDITIONAL DETAILS...While winds have weakened significantly
Friday evening, unstable conditions remain in place.
* WHAT...Hot conditions with temperatures from the mid 80s to mid
90s degrees. This will pose a moderate risk of heat-related
illness.
* WHERE...Portions of northwest and west central Washington.
* WHEN...Until 11 PM PDT this evening.
* IMPACTS...Heat will significantly increase the risk of
heat-related illnesses for those who are sensitive to heat,
especially those without effective cooling or adequate hydration.
* ADDITIONAL DETAILS...Localized areas of major HeatRisk are
possible in Cascade Valleys, where temperatures may approach 100
degrees.
* WHAT...Hot conditions with temperatures from the mid 80s to the
low 90s. This will pose a moderate risk of heat-related illness.
* WHERE...Central Coast, Eastern Strait of Juan de Fuca, North
Coast, Western Skagit County, Western Strait of Juan De Fuca, and
Western Whatcom County.
* WHEN...Until 11 PM PDT this evening.
* IMPACTS...Heat will significantly increase the risk of
heat-related illnesses for those who are sensitive to heat,
especially those without effective cooling or adequate hydration.
* ADDITIONAL DETAILS...The warmest temperatures will be in areas
away from the waters.
* WHAT...Hot conditions with temperatures in the mid 90s to low 100s
expected.
* WHERE...The Coeur d'Alene area down to the Lewiston Clarkston
Valley, central and eastern Washington.
* WHEN...Until 9 PM PDT Saturday.
* IMPACTS...Heat will significantly increase the risk of
heat-related illnesses for those who are sensitive to heat,
especially those without effective cooling or adequate hydration.
* AFFECTED AREA...Fire Weather Zone 658 West Slopes of the North
Cascades Generally above 1500 Feet.
* RELATIVE HUMIDITY...As low as 15 to 20 percent.
* TEMPERATURES...Up to 85.
* HAINES...Mid-level Haines 6.
* IMPACTS...A dry and unstable air mass with warm temperatures
can contribute to active fire behavior. In Western Washington,
significant growth on existing fires takes place under such
conditions. If a fire were to begin, air quality may diminish
in the surrounding area.
* AFFECTED AREA...Fire Weather Zone 659 West Slopes of the
Central Cascades Generally above 1500 Feet.
* RELATIVE HUMIDITY...As low as 15 to 20 percent.
* TEMPERATURES...Up to 90.
* HAINES...Mid-level Haines 6.
* IMPACTS...A dry and unstable air mass with warm temperatures
can contribute to active fire behavior. In Western Washington,
significant growth on existing fires takes place under such
conditions. If a fire were to begin, air quality may diminish
in the surrounding area.
* AFFECTED AREA...Fire Weather Zone 652 West Portion of the
Olympic Mountains and Fire Weather Zone 661 East Portion of
the Olympic Mountains.
* RELATIVE HUMIDITY...As low as 20 to 25 percent.
* TEMPERATURES...Up to 85.
* HAINES...Mid-level Haines 6.
* IMPACTS...A dry and unstable air mass with warm temperatures
can contribute to active fire behavior. In Western Washington,
significant growth on existing fires takes place under such
conditions. If a fire were to begin, air quality may diminish
in the surrounding area.
* WHAT...Hot conditions with temperatures up to 98 degrees. This
will pose a moderate to major risk of heat-related illness.
* WHERE...Portions of central, north central, and northeast Oregon
and central, south central, and southeast Washington.
* WHEN...Until 9 PM PDT Saturday.
* IMPACTS...Heat will significantly increase the risk of
heat-related illnesses for those who are sensitive to heat,
especially those without effective cooling or adequate hydration.
* WHAT...Hot conditions with temperatures up to 95 degrees. This
will pose a moderate to major risk of heat-related illness.
* WHERE...Lower Slopes of the Eastern Washington Cascades Crest.
* WHEN...Until 9 PM PDT Saturday.
* IMPACTS...Heat will significantly increase the risk of
heat-related illnesses for those who are sensitive to heat,
especially those without effective cooling or adequate hydration.
* AFFECTED AREA...In Oregon, Fire Weather Zone 688 Mt. Hood
National Forest Region. In Washington, Fire Weather Zone 634
Southern Gifford Pinchot National Forest and Fire Weather Zone
635 Mt. Adams Ranger District of the Gifford-Pinchot National
Forest.
* WINDS...East 5 to 10 mph with gusts up to 15 mph.
* RELATIVE HUMIDITY...As low as 15 percent.
* IMPACTS...Conditions may be favorable for rapid fire spread
which may threaten life and property. Use extra caution with
potential ignition sources, especially in grassy areas. Outdoor
burning is not recommended.
* ADDITIONAL DETAILS...Winds will gradually weaken through the
evening.
* AFFECTED AREA...In Washington, Fire Weather Zone 636 Western
Columbia River Gorge in Oregon and Washington.
* WINDS...East 5 to 10 mph with gusts to 15 to 20 mph.
* RELATIVE HUMIDITY...As low as 20 percent.
* IMPACTS...Conditions may be favorable for rapid fire spread
which may threaten life and property. Use extra caution with
potential ignition sources, especially in grassy areas.
Outdoor burning is not recommended.
The Southwest Clean Air Agency has continued an Air Quality Advisory,
which is IN EFFECT UNTIL NOON PDT SATURDAY.
An Air Quality Advisory for Smoke remains in effect. Wildfires burning
in the region combined with forecasted conditions will cause air
quality to reach unhealthy levels at times through 12 PM PDT
Saturday.
Pollutants in smoke can cause burning eyes, runny nose, aggravate
heart and lung diseases, and aggravate other serious health
problems. Limit outdoor activities and keep children indoors if it
is smoky. Please follow medical advice if you have a heart or lung
condition.
More information about air quality can be found at:
www.swcleanair.gov
* WHAT...Dangerously hot conditions with temperatures in the upper
80s to middle 90s.
* WHERE...Portions of northwest and west central Oregon and
southwest Washington.
* WHEN...Until 10 PM PDT this evening.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
