* WHAT...High temperatures in the upper 80s to lower 90s.
* WHERE...North Oregon Coast Range, North Oregon Coast Range
Lowlands, Central Oregon Coast Range, and Central Oregon Coast
Range Lowlands.
* WHEN...Until 10 PM PDT this evening.
* IMPACTS...Hot temperatures may cause heat illnesses.
* WHAT...Visibility of less than one quarter of a mile in dense fog.
* WHERE...In Oregon, Clatsop County Coast, Tillamook County Coast,
and Central Coast of Oregon. In Washington, South Washington Coast.
* WHEN...Until 11 AM PDT this morning.
* IMPACTS...Low visibility could make driving conditions hazardous.
* WHAT...Hot conditions with temperatures up to 102 degrees
expected. 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 94 degrees expected.
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.
* WHAT...Hot conditions with temperatures up to 102 degrees
expected. 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 expected.
This will pose a moderate to major risk of heat-related illness.
* WHERE...Ochoco-John Day Highlands and Southern Blue Mountains of
Oregon.
* 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...Temperatures around 100 to 105 expected in the afternoons.
* WHERE...In California, Western Siskiyou County. In Oregon, Central
Douglas County, Eastern Curry County and Josephine County, Jackson
County, and South Central Oregon Coast. This includes the lower
Klamath, Rogue, Illinois, Umpqua, upper Coquille, and Camas
valleys. This includes the cities of Somes Bar, Happy Camp,
Ashland, Medford, Grants Pass, Cave Junction, Roseburg, Agness,
and Powers.
* WHEN...Until 10 PM PDT this evening.
* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.
...HOT, DRY, AND UNSTABLE...
The National Weather Service in Pendleton has issued a Red Flag
Warning for dry and unstable conditions, which is in effect from
noon today to 9 PM PDT Saturday. The Fire Weather Watch is no
longer in effect.
* AFFECTED AREA...Fire Weather Zones 640 Central Mountains of
Oregon and 642 Southern Blue and Strawberry Mountains.
* TIMING...Friday through Saturday evening.
* WINDS...Southeast 5 to 10 mph.
* RELATIVE HUMIDITY...As low as 8 percent.
* TEMPERATURES...Up to 97.
* IMPACTS...Possible plume dominated fire behavior.
* HAINES...As high as 6.
* 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...Dangerously hot temperatures in the mid to upper 90s
expected.
* 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.
* WHAT...Dangerously hot temperatures in the mid to upper 90s
expected.
* WHERE...In Oregon, Upper Hood River Valley. In Washington, South
Washington Cascade Foothills.
* WHEN...Until 10 PM PDT this evening.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
* WHAT...Hot temperatures in the low 90s expected.
* WHERE...Willapa Hills and Willapa and Wahkiakum Lowlands.
* WHEN...Until 10 PM PDT this evening.
* IMPACTS...Hot temperatures may cause heat illnesses.
* WHAT...Dangerously hot temperatures in the low to mid 90s expected.
* WHERE...In Oregon, North Oregon Cascades, Cascades of Lane County,
and Cascades of Marion and Linn Counties. In Washington, South
Washington Cascades.
* WHEN...Until 10 PM PDT this evening.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
* WHAT...Dangerously hot temperatures in the mid to upper 90s
expected.
* 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.
* WHAT...Dangerously hot temperatures in the mid to upper 90s
expected.
* WHERE...In Oregon, Upper Hood River Valley. In Washington, South
Washington Cascade Foothills.
* WHEN...Until 10 PM PDT this evening.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
* WHAT...Hot temperatures in the low 90s expected.
* WHERE...North Oregon Coast Range, North Oregon Coast Range
Lowlands, Central Oregon Coast Range, and Central Oregon Coast
Range Lowlands.
* WHEN...Until 10 PM PDT this evening.
* IMPACTS...Hot temperatures may cause heat illnesses.
* WHAT...Dangerously hot temperatures in the low to mid 90s expected.
* WHERE...In Oregon, North Oregon Cascades, Cascades of Lane County,
and Cascades of Marion and Linn Counties. In Washington, South
Washington Cascades.
* WHEN...Until 10 PM PDT this evening.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
* IMPACTS...Any fires that develop will likely spread rapidly.
Outdoor burning is not recommended.
* AFFECTED AREA...This includes eastern Fire weather zone 617,
including the Diamond Complex and the southern portions of
the Homestead Complex near the Fuller Lake, Reynolds Butte
and Bullpup fires, northern Fire weather zone 623 north of
Lake of the Woods, Fire weather zone 624 north and east of
Chiloquin and northwest Fire weather zone 625 from Summer
Lake northwestward.
* THUNDERSTORMS...Isolated to scattered thunderstorms are
expected to develop Friday afternoon and evening. Storms are
likely to be dry with little or no rainfall.
* OUTFLOW WINDS...Strong, gusty outflows up to around 50 mph
are expected near storms.
* DETAILED URL...View the hazard area in detail at
https://www.wrh.noaa.gov/map/?wfo=mfr
* 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 23 percent.
* TEMPERATURES...Up to 86.
* 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.