* 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...From 11 AM Friday to 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...From 11 AM Friday to 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...Dangerously hot conditions with high temperatures of 95 to
105 degrees possible. This will pose a major to extreme risk of
heat-related illness.
* WHERE...Portions of north central and northeast Oregon and
central, south central, and southeast Washington.
* WHEN...From Saturday afternoon through Wednesday evening.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events. Extreme 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.
* WHAT...Dangerously hot conditions with high temperatures of
95-103F and overnight low temperatures of 60-70F expected. The
warmest overnight lows will occur in urban areas to the north of
Salem and 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, and Foothills of the
Northern and Central Oregon Cascades.
* WHEN...From 11 AM Friday to 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...Friday and Saturday will be the hottest days.
* WHAT...Dangerously hot conditions with high temperatures of
95-101F and overnight low temperatures of 63-67F expected.
* WHERE...Lower Columbia River and Cowlitz River Valleys.
* WHEN...From 11 AM Friday to 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...Friday and Saturday will be the hottest days.
* WHAT...Dangerous hot conditions with high temperatures up to
93-98F and overnight low temperatures of 60-68F expected.
* WHERE...South Washington Cascades and the Northern and Central
Cascades of Oregon, North and Central Coast Range Valleys of
Oregon, Willapa and Wahkiakum Lowlands, and South Washington
Cascade Foothills.
* WHEN...From 11 AM Friday to 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...Friday and Saturday will be the hottest days.
Overnight lows on the mid slopes of the Cascades could be as warm
as 70F.
* WHAT...Hot conditions with high temperatures in 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...From 11 AM Friday to 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...Dangerously hot conditions with high temperatures up to
92-96F and overnight low temperatures of 60-68F possible.
* WHERE...South Washington Cascades and the Northern and Central
Cascades of Oregon for elevations below 3500 feet, North and
Central Coast Range Valleys of Oregon, and Willapa and Wahkiakum
Lowlands.
* WHEN...From 11 AM Friday to 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...Friday and Saturday will be the hottest days.
* WHAT...Dangerously hot conditions with high temperatures of
92-100F and overnight low temperatures of 60-68F possible.
* WHERE...Lower Columbia River and Cowlitz River Valleys, and South
Washington Cascade Foothills.
* WHEN...From 11 AM Friday to 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...Friday and Saturday will be the hottest days.
* WHAT...Dangerously hot conditions with high temperatures of
95-103F and overnight low temperatures of 60-70F possible. The
warmest overnight lows will occur in urban areas to the north of
Salem and 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, and Foothills of the
Northern and Central Oregon Cascades.
* WHEN...From 11 AM Friday to 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...Friday and Saturday will be the hottest days.
* WHAT...Hot temperatures. High temperatures 95 to 102 degrees.
Limited overnight relief with low temperatures 65 to 74.
* WHERE...Entiat, Moses Lake, Number 2 Canyon, Lewiston, Disautel
Pass, Conconully, Tonasket, Leavenworth, Culdesac, Loup Loup Pass,
Lewiston Grade, Number 1 Canyon, Methow, Mansfield, Lapwai,
Clarkston, Cashmere, Chelan, Ritzville, Harrington, Plain,
Othello, Quincy, Winthrop, Wenatchee, Ephrata, Alpowa Summit,
Bridgeport, Gifford, Coulee City, Wilbur, Pangborn Airport, Twisp,
Omak, Odessa, Peck, Badger Mountain Road, Waterville, Creston,
Pomeroy, Brewster, Nespelem, Mazama, Oroville, Okanogan, and Grand
Coulee.
* WHEN...From Saturday afternoon through Tuesday evening.
* 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 95 to 102 degrees.
Limited overnight relief with low temperatures 65 to 74.
* WHERE...Loup Loup Pass, Pomeroy, Brewster, Peck, Pangborn Airport,
Plain, Harrington, Gifford, Moses Lake, Clarkston, Odessa,
Ritzville, Wilbur, Lapwai, Ephrata, Wenatchee, Oroville, Mazama,
Cashmere, Mansfield, Coulee City, Alpowa Summit, Methow,
Bridgeport, Chelan, Okanogan, Lewiston Grade, Conconully,
Tonasket, Grand Coulee, Omak, Othello, Disautel Pass, Quincy,
Entiat, Lewiston, Winthrop, Nespelem, Number 2 Canyon, Creston,
Badger Mountain Road, Leavenworth, Culdesac, Twisp, Number 1
Canyon, and Waterville.
* WHEN...From Saturday afternoon through Tuesday evening.
* 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 of 95 to
105 degrees possible. This will pose a major to extreme risk of
heat-related illness.
* WHERE...Portions of north central and northeast Oregon and
central, south central, and southeast Washington.
* WHEN...From Saturday afternoon through Tuesday evening.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events. Extreme 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.
* WHAT...Dangerously hot conditions with high temperatures of
96-101F and overnight low temperatures of 60-70F possible. The
warmest overnight lows will occur in urban areas to the north of
Salem and 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, Lower Columbia River and
Cowlitz River Valleys, and Clackamas County Cascade Foothills.
* WHEN...From Friday morning through late Sunday night.
* 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
95-100F and overnight low temperatures of 60-70F possible.
* WHERE...In Oregon, Cascade Foothills of Marion and Linn Counties
and Lane County Cascade Foothills. In Washington, South Washington
Cascade Foothills.
* WHEN...From Friday morning through late Sunday night.
* 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 of 95 to 100
degrees F possible. Overnight temperatures will range from 65 to
68 degrees F on Friday night, and up to 70 degrees on Saturday
night.
* WHERE...Western and Central Columbia River Gorge and the Hood
River Valley, and East Portland Metro.
* WHEN...From Friday morning through late Sunday night.
* 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 of 95 to 100
degrees F possible. Overnight temperatures will range from 60 to
68 degrees F on Friday night and up to 70 degrees on Saturday
night, warmest for locations north of Salem.
* WHERE...Central and Southern Willamette Valley, Greater Vancouver
Metro, Lower Columbia River and Cowlitz River Valleys, Portland
Metro Hills, Tualatin Valley, Inner Portland Metro, West Columbia
River Gorge of Oregon above 500 ft, and Clackamas County Cascade
Foothills.
* WHEN...From Friday morning through late Sunday night.
* 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 of 97 to 100
degrees F possible. Overnight temperatures will range from 65 to
68 degrees F on Friday night, and up to 70 degrees on Saturday
night.
* WHERE...Western and Central Columbia River Gorge and the Hood
River Valley, and East Portland Metro.
* WHEN...From Friday morning through late Saturday night.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
* ADDITIONAL DETAILS...There is around a 15-30% chance of high
temperatures of 100 degrees or more in eastern Multnomah County
(especially around Troutdale), and a 20% chance of temperatures of
100 degrees or more on Saturday in the Upper Hood River Valley.
Increased nighttime temperatures will limit overnight recoveries.
ESFSEW
A frontal system will move across the area Friday into Saturday
across western Washington. Through Saturday afternoon, 3-5 inches of
rain are expected across the mountains, with 0.5-1.5 inches expected
through the lowlands.
Very dry antecedent conditions has left the area soils dry and hard.
This amount of rainfall in one storm will not have much time to soak
into the very dry soil, which will result in heavy surface runoff.
Impacts are uncertain due to how much moisture will be able to be
absorbed by the soil. Several different threats are expected with
this storm, which are detailed below.
*Urban and urban-like flooding will be possible in flat areas and
roadways.
*Some small streams and creeks may become swollen due to rapid
runoff while others may remain lower if the channel bed is able to
absorb the water efficiently.
*Rivers will not flood, but will undergo rapid rises to unusually
high levels for this time of year, some of which may reach daily
record crests. This will pose a threat to those engaged in
recreational activities in and along river channels.
*Burn scars will have the potential to undergo impacts, but the
probability is low. Impacts may include flash flooding, debris
flows, rock falls, and other falling debris.
*Those engaging in recreational activities in the mountains may face
challenges to where high water may make forest roads and trails
difficult to traverse.
Please monitor the latest forecasts from the National Weather
Service for additional information.
An Air Quality Alert has been issued by the Olympic Region Clean Air
Agency.
An Air Quality Alert has been issued for Mason County, effective until
9 AM PDT Friday August 15 due to the current wildfire smoke from the
Bear Gulch Fire. Particulate matter (PM 2.5) levels may reach very
unhealthy or hazardous in areas closest to the fire.
Health impacts and recommended actions: When air quality is very
unhealthy or hazardous, everyone should reduce exposure. Stay inside
and filter indoor air to keep it cleaner. Go elsewhere for cleaner
air, if needed. Burning restrictions are in effect.
For current air quality conditions and additional information visit
www.orcaa.org
