...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.
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...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.
* WHAT...Dangerously hot conditions with high temperatures of
96-102F 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.
* WHAT...Dangerously hot conditions with high temperatures up to
93-98F and overnight low temperatures of 60-68F 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.
* WHAT...Dangerously hot conditions with temperatures up to 98 to
104 degrees expected. This will pose a major to locally extreme
risk of heat-related illness.
* WHERE...Portions of north central and northeast Oregon and
central, south central, and southeast Washington.
* WHEN...Until 9 PM PDT Wednesday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
* ADDITIONAL DETAILS...An alternative scenario is lingering cloud
cover from possible thunderstorms from southern Oregon may result
in lower than forecast afternoon temperatures or higher than
forecast overnight low temperatures.
* WHAT...Hot conditions with temperatures 95 to 100 degrees
expected. This will pose a moderate to locally major risk of
heat-related illness.
* WHERE...In Oregon, Central Oregon, John Day Basin, and Grande
Ronde Valley. In Washington, Northwest Blue Mountains.
* WHEN...Until 9 PM PDT Wednesday.
* IMPACTS...Hot temperatures may cause heat illnesses.
* ADDITIONAL DETAILS...An alternative scenario is lingering cloud
cover from possible thunderstorms from southern Oregon may result
in lower than forecast afternoon temperatures or higher than
forecast overnight low temperatures.
* WHAT...Hot conditions with temperatures up to 95 degrees expected.
This will pose a moderate risk of heat-related illness.
* WHERE...East Slopes of the Oregon Cascades and Wallowa County.
* WHEN...Until 9 PM PDT Sunday.
* IMPACTS...Hot temperatures may cause heat illnesses.
* ADDITIONAL DETAILS...An alternative scenario is lingering cloud
cover from possible thunderstorms from southern Oregon may result
in lower than forecast afternoon temperatures or higher than
forecast overnight low temperatures.
* WHAT...Hot conditions with high temperatures of 95 to 100 degrees
expected. Overnight low temperatures of 50 to 65 degrees.
* WHERE...In Oregon, all areas from the Cascades and Siskiyou
Mountains eastward, including Union Creek, Lake of the Woods, Fish
Lake, Howard Prairie, Klamath Falls, Chiloquin, Crescent, Fort
Rock, Bly and Lakeview. In California, eastern Siskiyou County and
all of Modoc County, including Dorris, Macdoel, Tulelake, Adin,
Alturas and Likely.
* WHEN...Until 8 PM PDT this evening.
* IMPACTS...Hot temperatures may cause heat related illnesses.
* WHAT...Very hot conditions with high temperatures of 100 to 107
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 104 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.
The National Weather Service in Medford has issued a Red Flag
Warning, which is in effect from 1 PM to 9 PM PDT Sunday.
* IMPACTS...Abundant lightning on dry fuels resulting in the
potential for numerous new fire starts.
* AFFECTED AREA...In California, all of Fire weather zones 280,
281, 284, and 285, and in Oregon, all of Fire weather zones 621,
623, 624, and 625.
* THUNDERSTORMS...Scattered thunderstorms with abundant lightning
are expected. Storms are likely to be wet, but lightning strikes
outside of precipitation cores are possible, and may cause many
new fire starts.
* OUTFLOW WINDS...Gusts of 35 to 50 mph could travel outward up
to 25 miles from thunderstorm cores.
* DETAILED URL...View the hazard area in detail at
https://www.wrh.noaa.gov/map/?wfo=mfr
* WHAT...Very hot conditions with high temperatures of 100 to 107
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 50 to 65 degrees.
* WHERE...In Oregon, all areas from the Cascades and Siskiyou
Mountains eastward, including Union Creek, Lake of the Woods, Fish
Lake, Howard Prairie, Klamath Falls, Chiloquin, Crescent, Fort
Rock, Bly and Lakeview. In California, eastern Siskiyou County and
all of Modoc County, including Dorris, Macdoel, Tulelake, Adin,
Alturas and Likely.
* WHEN...Until 8 PM PDT this evening.
* IMPACTS...Hot temperatures may cause heat related illnesses.
* WHAT...Hot conditions with high temperatures of 95 to 104 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.
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.lrapa.org
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.oregon.gov/DEQ
www.lrapa.org
* 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.
* ADDITIONAL DETAILS...Saturday will be the hottest day. Overnight
lows as warm as the lower 70s are possible on the mid slopes of
the Cascades.
* WHAT...Dangerously hot conditions with high temperatures of
97-103F and overnight low temperatures of 60-70F expected, except
low to mid 70s in the Columbia River Gorge.
* 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...Saturday and Sunday will be the hottest days.
The warmest overnight lows are expected to occur in the Columbia
River Gorge and in urban areas from Salem northward.
