* WHAT...Dangerously hot conditions with high temperatures of
95-101F and overnight low temperatures of 60-70F expected.
* WHERE...Greater Portland/Vancouver Metro, Western and Central
Columbia River Gorge, the Corbett area and the Hood River Valley,
Central and Southern Willamette Valley, Foothills of the Northern
and Central Oregon Cascades, Lower Columbia River and Cowlitz
River Valleys, and South Washington Cascade Foothills.
* WHEN...Until 11 PM PDT Tuesday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events, especially for those spending time outdoors
or without access to adequate cooling.
* ADDITIONAL DETAILS...The warmest overnight lows are expected to
occur in the Columbia River Gorge and in urban areas from Salem
northward.
* WHAT...Dangerously hot conditions with high temperatures of
95-101F and overnight low temperatures of 60-70F expected.
* WHERE...Greater Portland/Vancouver Metro, Western and Central
Columbia River Gorge, the Corbett area and the Hood River Valley,
Central and Southern Willamette Valley, Foothills of the Northern
and Central Oregon Cascades, Lower Columbia River and Cowlitz
River Valleys, and South Washington Cascade Foothills.
* WHEN...Until 11 PM PDT Tuesday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events, especially for those spending time outdoors
or without access to adequate cooling.
* ADDITIONAL DETAILS...The warmest overnight lows are expected to
occur in the Columbia River Gorge and in urban areas from Salem
northward.
* WHAT...Dangerously hot conditions with high temperatures up to
90-95F and overnight low temperatures of 60-68F possible.
* WHERE...South Washington Cascades and the Northern and Central
Cascades of Oregon, North and Central Coast Range Valleys of
Oregon, and Willapa and Wahkiakum Lowlands.
* WHEN...Until 5 AM PDT Tuesday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events, especially for those spending time outdoors
or without access to adequate cooling.
* WHAT...Dangerously hot conditions with high temperatures up to
85-90F and overnight low temperatures of 58-68F possible.
* WHERE...North and Central Coast Range Mountains of Oregon, and
Willapa Hills.
* WHEN...Until 5 AM PDT Monday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events, especially for those spending time outdoors
or without access to adequate cooling.
* 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 to 25 percent.
* TEMPERATURES...Up to 90 to 100.
* STABILITY...Unstable conditions can be expected.
* 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 661 East Portion of the
Olympic Mountains.
* RELATIVE HUMIDITY...As low as 20 to 25 percent.
* TEMPERATURES...Up to 90 to 95.
* STABILITY...Unstable conditions can be expected.
* 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 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 to 25 percent.
* TEMPERATURES...Up to 90 to 100.
* STABILITY...Unstable conditions can be expected.
* 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 high temperatures ranging from the
upper 80s to mid 90s and low temperatures in the mid 60s. This
will pose a major risk of heat-related illness.
* WHERE...City of Seattle, Eastside, and Lowlands of Pierce and
Southern King Counties.
* WHEN...Until 5 AM PDT Tuesday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
* WHAT...Hot conditions with high temperatures ranging from the mid
80s to 90s expected and low temperatures mostly in the 60s. This
will pose a moderate risk of heat-related illness.
* WHERE...Portions of northwest and west central Washington.
* WHEN...Until 5 AM PDT Tuesday.
* 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 high temperatures ranging from the
upper 80s to upper 90s and low temperatures mostly in the 60s.
This will pose a major risk of heat-related illness.
* WHERE...Foothills and Valleys of the North Cascades, Foothills and
Valleys of Central King County, Foothills and Valleys of Pierce
and Southern King Counties, Foothills and Valleys of Snohomish and
Northern King Counties, and Foothills and Valleys of Thurston and
Lewis Counties.
* WHEN...Until 5 AM PDT Tuesday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
* WHAT...Hot conditions with high temperatures ranging from the mid
80s to 90s expected and low temperatures mostly in the 60s. This
will pose a moderate risk of heat-related illness.
* WHERE...Lake Crescent Area Including US 101.
* WHEN...Until 5 AM PDT Tuesday.
* 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...Very hot conditions with high temperatures of 100 to 105
degrees expected. Overnight low temperatures of 60 to 70 degrees.
* WHERE...The valleys of Josephine and Jackson Counties. This
includes Agness, Grants Pass, Cave Junction, Williams, Ruch, Rogue
River, Gold Hill, White City, Shady Cove, Medford, Jacksonville,
Talent and Ashland.
* WHEN...Until 8 PM PDT Monday.
* IMPACTS...Unusually hot temperatures will increase risk for heat
related illnesses. Warm overnight temperatures will provide little
relief from hot daytime temperatures.
* WHAT...Hot conditions with high temperatures of 95 to 100 degrees
expected. Overnight low temperatures of 55 to 65 degrees.
* WHERE...The valleys of central and eastern Douglas County. This
includes Camas Valley, Elkton, Drain, Sutherlin, Roseburg,
Glendale, Riddle, Canyonville, Tiller and Toketee Falls.
* WHEN...Until 8 PM PDT Sunday.
* IMPACTS...Hot temperatures may cause heat related illnesses.
...HOT, DRY, AND UNSTABLE CONDITIONS EXPECTED IN CENTRAL OREGON OVER
THE NEXT TWO DAYS...
.Hot conditions, combined with low relative humidities and an
unstable air mass, have the potential to create significant,
plume-dominated fire growth in the area surrounding the Flat Fire.
Unstable conditions will relent overnight, however relative
humidity recoveries are expected to be poor.
The National Weather Service in Pendleton has issued a Red Flag
Warning for hot, dry, and unstable conditions, which is in effect
from noon Sunday to 9 PM PDT Monday.
* AFFECTED AREA...Eastern portion of Fire Weather Zones 700
Central Mountains of Oregon and western portion of 704 Northern
Deschutes National Forest, primarily including areas around the
Flat Fire.
* TIMING...From noon Sunday to 9 PM PDT Monday.
* MIXING HEIGHT...As high as 8,000 ft AGL Sunday and 11,500 ft
AGL Monday.
* RELATIVE HUMIDITY...As low as 15 percent.
* IMPACTS...A dry and unstable air mass with warm temperatures can
contribute to active fire behavior.
...HOT, DRY, AND UNSTABLE CONDITIONS FOR MONDAY AND TUESDAY...
.A strong ridge of high pressure will bring a period of hot and
dry conditions to the central and northern Cascades of Washington
this weekend. The ridge will shift east of the Cascades early
next week with the atmosphere becoming more unstable at that
time. Increased instability with hot and dry conditions will
bring the potential for critical fire weather conditions. In
addition, we are monitoring the potential for isolated
thunderstorms on Tuesday that could result in new fire starts.
* Affected Area: East Washington Central Cascades (Zone 696),
East Portion of North Cascades National Park/Lake Chelan
National Recreation Area (Zone 697), East Washington North
Cascades (Zone 698) and Methow Valley (Zone 704).
* Winds: East-southeast 3 to 7 mph in the afternoon becoming west
5 to 10 mph in the evening.
* Timing: Afternoon and evening for both Monday and Tuesday
* Relative Humidities: Below 4000 feet: 13 to 20 percent. Above
4000 feet: 20 to 30 percent.
* Temperatures: Below 4000 feet: 90 to 102 degrees. Above 4000
feet: 75 to 90 degrees.
* Impacts: Hot, dry, unstable conditions may lead to rapid fire
growth on any new or existing fires.
The Oregon Department of Environmental Quality, and the Lane Regional
Air Protection Agency have continued an Air Quality Advisory, which
is in effect from 10 AM Saturday to 8 PM PDT Monday.
An Air Quality Advisory for Ozone remains in effect. High levels of
ozone in the lower atmosphere in the region combined with forecasted
conditions will cause air quality to reach unhealthy levels at times
through Monday evening.
Pollutants can cause burning eyes, runny nose, aggravate heart and
lung diseases, and aggravate other serious health problems. Limit
outdoor activities and keep children indoors. Please follow medical
advice if you have a heart or lung condition.
More information about air quality can be found at:
www.orcaa.org
www.swcleanair.gov
www.oregon.gov/DEQ
www.lrapa.org
The Oregon Department of Environmental Quality and the Lane Regional Air
Protection Agency have issued an Air Quality Advisory, which is in
effect from 10 AM Saturday to 8 PM PDT Monday.
An Air Quality Advisory for Smoke has been issued. Wildfires burning
in the region combined with forecasted conditions will cause air
quality to reach unhealthy levels due to smoke and ozone at times
through Monday.
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.orcaa.org
www.swcleanair.gov
www.oregon.gov/DEQ
www.lrapa.org
* WHAT...Hot temperatures. High temperatures 95 to 102 degrees.
Limited overnight relief with low temperatures 65 to 74.
* WHERE...Peck, Quincy, Lewiston, Wilbur, Moses Lake, Omak, Methow,
Culdesac, Grand Coulee, Oroville, Chelan, Tonasket, Entiat,
Mansfield, Number 2 Canyon, Twisp, Waterville, Leavenworth,
Winthrop, Alpowa Summit, Lewiston Grade, Odessa, Plain, Clarkston,
Harrington, Okanogan, Pomeroy, Ephrata, Pangborn Airport,
Brewster, Lapwai, Disautel Pass, Coulee City, Ritzville, Cashmere,
Conconully, Number 1 Canyon, Loup Loup Pass, Creston, Gifford,
Mazama, Bridgeport, Wenatchee, Othello, Badger Mountain Road, and
Nespelem.
* WHEN...Until 9 PM PDT Wednesday.
* IMPACTS...Hot temperatures will increase the risk of heat-related
illnesses. Heat of this magnitude affects anyone without cooling
and hydration as well as health systems and industries.
* WHAT...Hot temperatures. High temperatures 90 to 99 degrees for
elevations below 3500 feet. High temperatures 80 to 89 degrees for
elevations above 3500 feet. Limited overnight relief with low
temperatures 57 to 65.
* WHERE...Moscow, Plummer, Fruitland, Oakesdale, La Crosse, Tekoa,
Kettle Falls, Wauconda, Deer Park, Boulder Creek Road, Newport,
Uniontown, Rockford, Downtown Spokane, Northport, Metaline,
Rosalia, Potlatch, Craigmont, Colville, Inchelium, Nezperce, Coeur
d'Alene, Mountain Road, Airway Heights, Metaline Falls, Genesee,
Spokane Valley, Chewelah, Tiger, Springdale-Hunters Road, Colfax,
Hayden, Pullman, Flowery Trail Road, Winchester, Peola, Fairfield,
Cheney, Anatone, Republic, Soldiers Meadow Road, Sherman Pass,
Highway 20 Wauconda Summit, Ione, Kamiah, Chesaw Road, Orin-Rice
Road, Worley, Post Falls, Cloverland Road, and Davenport.
* WHEN...Until 9 PM PDT Wednesday.
* IMPACTS...Hot temperatures will increase the risk of heat-related
illnesses. Heat of this magnitude affects anyone without cooling
and hydration as well as health systems and industries.
* WHAT...Dangerously hot conditions with high temperatures up to
93-98F and overnight low temperatures of 60-68F possible.
* WHERE...South Washington Cascades and the Northern and Central
Cascades of Oregon, North and Central Coast Range Valleys of
Oregon, and Willapa and Wahkiakum Lowlands.
* WHEN...Until 5 AM PDT Tuesday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events, especially for those spending time outdoors
or without access to adequate cooling.