...HOT, DRY AND UNSTABLE ALONG WITH BREEZY WINDS TUESDAY THROUGH
THURSDAY...
High pressure that has brought the hot temperatures the past
weekend is showing signs of breaking down. The instability will
increase as a result, and the combination of hot, dry and
unstable weather warrants Red Flag Warnings. In addition, breezy
winds will develop through the Cascade gaps and into portions of
the Columbia Basin Wednesday and Thursday, and will coincide with
low relative humidities in the afternoon and evening.
* AFFECTED AREA...Fire Weather Zones 642 Southern Blue and
Strawberry Mountains, 643 Northern Blue Mountains of Oregon,
644 Central Blue Mountains, 645 Wallowa District, 692 Blue
Mountains of Washington and 693 Southeast Washington Grande
Ronde Valley.
* TIMING...Tuesday afternoon through Wednesday evening.
* WINDS...Northwest 10 to 15 mph.
* RELATIVE HUMIDITY...As low as 12 percent.
* TEMPERATURES...Up to 100.
* IMPACTS...Any new and existing fires have a strong potential
for extreme fire behavior.
* HAINES...As high as 6.
* WHAT...Dangerously hot conditions with limited overnight relief.
Afternoon high temperatures of 95 to 105 degrees. Overnight low
temperatures in the mid-50s to lower 70s. This will pose a major
risk of heat-related illness.
* WHERE...Lower Slopes of the Eastern Washington Cascades Crest.
* WHEN...Until 10 PM PDT Wednesday.
* IMPACTS...Heat-related illnesses increase significantly during
extreme heat events.
* WHAT...Hot temperatures with modest overnight relief. Afternoon
high temperatures of 90 to 105 degrees, highest in lower valleys
and canyons. Overnight low temperatures in the mid 50s to upper
60s, lowest in high valleys. This will pose a moderate risk of
heat-related illness.
* WHERE...Blue Mountains of Oregon and Washington, Grande Ronde
Valley, and Wallowa County.
* WHEN...Until 10 PM PDT Wednesday.
* IMPACTS...Hot temperatures may cause heat-related illnesses.
* ADDITIONAL DETAILS...Hottest temperatures during this
long-duration heatwave are expected Wednesday.
* WHAT...Dangerously hot conditions with limited overnight relief.
Afternoon high temperatures of 95 to 110 degrees. Overnight low
temperatures in the 60s to mid-70s. This will pose a major risk of
heat-related illness.
* WHERE...Portions of north central and northeast Oregon and
central, south central, and southeast Washington.
* WHEN...Until 10 PM PDT Wednesday.
* IMPACTS...Heat-related illnesses increase significantly during
extreme heat events.
* WHAT...Hot temperatures with modest overnight relief. Afternoon
high temperatures of 90 to 105 degrees, highest in lower valleys
and canyons. Overnight low temperatures in the mid 50s to upper
60s, lowest in high valleys. This will pose a moderate risk of
heat-related illness.
* WHERE...Blue Mountains of Oregon and Washington, Grande Ronde
Valley, and Wallowa County.
* WHEN...Until 10 PM PDT Wednesday.
* IMPACTS...Hot temperatures may cause heat-related illnesses.
* ADDITIONAL DETAILS...Hottest temperatures during this
long-duration heatwave are expected Wednesday.
* WHAT...Dangerously hot conditions with limited overnight relief.
Afternoon high temperatures of 95 to 110 degrees. Overnight low
temperatures in the mid-50s to lower 70s. This will pose a major
risk of heat-related illness.
* WHERE...Central Oregon and John Day Basin.
* WHEN...Until 10 PM PDT Wednesday.
* IMPACTS...Heat-related illnesses increase significantly during
extreme heat events.
* WHAT...Dangerously hot conditions with limited overnight relief.
Afternoon high temperatures of 95 to 110 degrees. Overnight low
temperatures in the 60s to mid-70s. This will pose a major risk of
heat-related illness.
* WHERE...Portions of north central and northeast Oregon and
central, south central, and southeast Washington.
* WHEN...Until 10 PM PDT Wednesday.
* IMPACTS...Heat-related illnesses increase significantly during
extreme heat events.
* WHAT...Continuing hot temperatures of 100 to 110 will continue on
Wednesday.
* WHERE...In California, western and central Siskiyou County. This
includes the cities of Yreka, Weed, Etna, Happy Camp, Mt Shasta
City, and Dunsmuir. In Oregon, Josephine and Jackson counties and
eastern Curry County. This includes the entire Rogue Valley and
the cities of Medford, Grants Pass, Cave Junction, and Butte Falls.
* WHEN...Until 9 PM PDT Wednesday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events. Area rivers will be cold and can cause shock
to swimmers.
* WHAT...High temperatures of 95 to 102 degrees with lows in the mid
to upper 50s expected.
* WHERE...In California, Modoc County and eastern Siskiyou County.
This includes the cities and communities of Macdoel, Tulelake,
Pondosa, Bray, Tennant, Dorris, Tionesta, Alturas, and Adin. In
Oregon, Klamath and Lake counties. This includes the cities of
Klamath Falls, Chemult, Summer Lake, Chiloquin, Malin, Keno,
Sprague River, and Lakeview.
* WHEN...Until 9 PM PDT Wednesday.
* IMPACTS...Hot temperatures may cause heat illnesses. Area rivers
will be cold and can cause shock to swimmers.
* WHAT...Hot conditions during the day for the valleys. Highs will
be in the 90s except near 100 in Stehekin.
* WHERE...Stehekin, Stevens Pass, and Holden Village.
* WHEN...Until 10 PM PDT Wednesday.
* IMPACTS...Hot temperatures may cause heat illnesses.
* WHAT...Dangerously hot conditions during the day for the valleys.
Highs 95 to 103. Overnight lows will be in the 50s to mid 60s.
* WHERE...Boulder Creek Road, Fruitland, St. Maries, Metaline,
Mullan, Newport, Priest River, Athol, Bonners Ferry, Orin-Rice
Road, Fernwood, Pinehurst, Metaline Falls, Kettle Falls, Kellogg,
Springdale-Hunters Road, Inchelium, Clark Fork, Colville,
Eastport, Sandpoint, Dobson Pass, Osburn, Wallace, Ione, Republic,
Fourth Of July Pass, Schweitzer Mountain Road, Wauconda, Chesaw
Road, Flowery Trail Road, Tiger, Sherman Pass, Lookout Pass,
Chewelah, Highway 20 Wauconda Summit, Northport, and Deer Park.
* WHEN...Until 10 PM PDT Wednesday.
* IMPACTS...Hot temperatures may cause heat illnesses.
* WHAT...Dangerously hot conditions during the day with little
relief overnight. Highs 100 to 108. Overnight lows will be in the
mid 60s to mid 70s.
* WHERE...Portions of North and North Central Idaho and Central,
East Central, North Central, Northeast, and Southeast Washington.
* WHEN...Until 10 PM PDT Wednesday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat.
* WHAT...Hot conditions with high temperatures in the mid to upper
90s and low temperatures in the lower to mid 60s. This will pose a
moderate to major risk of heat-related illness.
* WHERE...Hood Canal Area, Bellevue and Vicinity, Bremerton and
Vicinity, East Puget Sound Lowlands, Everett and Vicinity, Seattle
and Vicinity, Tacoma Area, West Slopes North Cascades and Passes,
West Slopes North Central Cascades and Passes, and West Slopes
South Central Cascades and Passes.
* WHEN...Until 5 PM PDT Wednesday.
* IMPACTS...Heat will significantly increase the risk of
heat-related illnesses for much of the population, especially
those who are heat sensitive and those without effective cooling
or adequate hydration.
* ADDITIONAL DETAILS...The warmest locations will remain in the
urban centers, as well as the foothills and valleys of the
Cascades where the cooling marine influence will be the last to
arrive.
* WHAT...Hot conditions with high temperatures mostly in the 90s and
low temperatures in the 60s. This will pose a moderate risk of
heat-related illness.
* WHERE...Admiralty Inlet Area, Eastern Strait of Juan de Fuca,
Olympics, San Juan County, Western Skagit County, Western Whatcom
County, Lower Chehalis Valley Area, and Southwest Interior.
* WHEN...Until 10 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...Temperatures will gradually cool during the
middle and late portions of the week, but will remain well above
normal in the 80s for much of the lowlands.
* AFFECTED AREA...Fire Weather Zone 658 West Slopes of the North
Cascades Generally above 1500 Feet and Fire Weather Zone 659
West Slopes of the Central Cascades Generally above 1500 Feet.
* RELATIVE HUMIDITY...As low as 15 percent.
* TEMPERATURES...Highs in the upper 80s to mid 90s.
* 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...Dangerously hot conditions with limited overnight relief.
Afternoon high temperatures of 95 to 105 degrees. Overnight low
temperatures in the mid-50s to lower 70s. This will pose a major
risk of heat-related illness.
* WHERE...Lower Slopes of the Eastern Washington Cascades Crest.
* WHEN...Until 10 PM PDT Wednesday.
* IMPACTS...Heat-related illnesses increase significantly during
extreme heat events.
* ADDITIONAL DETAILS...Hottest temperatures during this
long-duration heatwave are expected Today.
* WHAT...Dangerously hot conditions with limited overnight relief.
Afternoon high temperatures of 95 to 110 degrees. Overnight low
temperatures in the 60s to mid-70s. This will pose a major risk of
heat-related illness.
* WHERE...Portions of north central and northeast Oregon and
central, south central, and southeast Washington.
* WHEN...Until 10 PM PDT Wednesday.
* IMPACTS...Heat-related illnesses increase significantly during
extreme heat events.
* ADDITIONAL DETAILS...Hottest temperatures during this
long-duration heatwave are expected Today.
* WHAT...Hot temperatures with modest overnight relief. Afternoon
high temperatures of 90 to 105 degrees, highest in lower valleys
and canyons. Overnight low temperatures in the mid 50s to upper
60s, lowest in high valleys. This will pose a moderate risk of
heat-related illness.
* WHERE...Blue Mountains of Oregon and Washington, Grande Ronde
Valley, and Wallowa County.
* WHEN...Until 10 PM PDT Wednesday.
* IMPACTS...Hot temperatures may cause heat-related illnesses.
* ADDITIONAL DETAILS...Hottest temperatures during this
long-duration heatwave are expected Today and Wednesday.
* WHAT...Hot temperatures with modest overnight relief. Afternoon
high temperatures of 90 to 105 degrees, highest along the East
Slopes of the Oregon Cascades. Overnight low temperatures in the
low 50s to upper 60s, lowest in valleys. This will pose a moderate
risk of heat-related illness.
* WHERE...In Oregon, East Slopes of the Oregon Cascades. In
Washington, Upper Slopes of the Eastern Washington Cascades Crest.
* WHEN...Until 10 PM PDT this evening.
* IMPACTS...Hot temperatures may cause heat-related illnesses.
* ADDITIONAL DETAILS...Hottest temperatures during this
long-duration heatwave are expected Today.
* WHAT...Dangerously hot conditions with limited overnight relief.
Afternoon high temperatures of 95 to 110 degrees. Overnight low
temperatures in the 60s to mid-70s. This will pose a major risk of
heat-related illness.
* WHERE...Portions of north central and northeast Oregon and
central, south central, and southeast Washington.
* WHEN...Until 10 PM PDT Wednesday.
* IMPACTS...Heat-related illnesses increase significantly during
extreme heat events.
* ADDITIONAL DETAILS...Hottest temperatures during this
long-duration heatwave are expected Today.