* WHAT...Hot temperatures with modest overnight relief. Afternoon
high temperatures potentially reaching 105 degrees in the Grande
Ronde Valley, with highs in the 90s up to or exceeding 100 degrees
in the mountains and mountain valleys. Overnight and morning low
temperatures in the 50 and 60s.
* WHERE...Blue Mountains of Oregon and Washington, Grande Ronde
Valley, and Wallowa County.
* WHEN...From noon Monday to 10 PM PDT Thursday.
* IMPACTS...Hot temperatures may cause heat illnesses.
* ADDITIONAL DETAILS...In Wallowa County, hottest temperatures will
be in the canyons, especially Hells Canyon. Moderate to locally
Extreme HeatRisk (risk of heat-related impacts) is anticipated
through the duration of the event.
* WHAT...Hot temperatures with modest overnight relief. Afternoon
high temperatures potentially reaching 105 along the East Slopes
of the Oregon Cascades, and potentially exceeding 100 degrees
along the Upper Slopes of the Eastern Washington Cascades Crest.
* WHERE...In Oregon, East Slopes of the Oregon Cascades. In
Washington, Upper Slopes of the Eastern Washington Cascades Crest.
* WHEN...From noon Monday to 10 PM PDT Tuesday.
* IMPACTS...Hot temperatures may cause heat illnesses.
* ADDITIONAL DETAILS...Moderate to Major HeatRisk (risk of
heat-related impacts) is anticipated through the duration of the
event.
* 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 85 to 95 degrees Fahrenheit.
* 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...Afternoon temperatures in the upper 80s to middle 90s
expected. A few spots could reach close to 100 degrees, mainly
those lower valleys located towards the Willamette Valley.
* 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 Tuesday.
* IMPACTS...Hot temperatures may cause heat illnesses.
* WHAT...Dangerously hot conditions with temperatures 100 to 105
expected. Overnight temperatures will also be very warm, only
falling below 70 degrees for a short period late each night, if at
all. The warm nighttime temperatures will limit chances to recover
from the heat, exacerbating the risk of heat-related illness in
this prolonged heat wave.
* WHERE...Portions of northwest and west central Oregon and
southwest Washington.
* WHEN...Until 10 PM PDT Tuesday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
* WHAT...Afternoon temperatures in the upper 80s to middle 90s
expected. A few spots could reach close to 100 degrees, mainly
those lower valleys located towards the Willamette Valley.
* 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 Tuesday.
* IMPACTS...Hot temperatures may cause heat illnesses.
* WHAT...Dangerously hot conditions with temperatures 100 to 105
expected. Overnight temperatures will also be very warm, only
falling below 70 degrees for a short period late each night, if at
all. The warm nighttime temperatures will limit chances to recover
from the heat, exacerbating the risk of heat-related illness in
this prolonged heat wave.
* WHERE...Portions of northwest and west central Oregon and
southwest Washington.
* WHEN...Until 10 PM PDT Tuesday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
* WHAT...Dangerously hot conditions with little overnight relief.
Afternoon high temperatures potentially exceeding 110 degrees in
some areas. Overnight and morning low temperatures in the 60s and
70s.
* WHERE...Portions of north central and northeast Oregon and
central, south central, and southeast Washington.
* WHEN...Until 10 PM PDT Thursday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat and high humidity events.
* ADDITIONAL DETAILS...Major to locally Extreme HeatRisk (risk of
heat-related impacts) is anticipated through the duration of the
event.
* WHAT...Hot temperatures with modest overnight relief. Afternoon
high temperatures potentially reaching 105 degrees in the Grande
Ronde Valley, with highs in the 90s up to 100 degrees in the
mountains. Overnight and morning low temperatures in the 50 and
60s.
* WHERE...Blue Mountains of Oregon and Washington, and Grande Ronde
Valley.
* WHEN...From noon Monday to 10 PM PDT Thursday.
* IMPACTS...Hot temperatures may cause heat illnesses.
* ADDITIONAL DETAILS...Moderate to Major HeatRisk (risk of
heat-related impacts) is anticipated through the duration of the
event.
* WHAT...Dangerously hot conditions with little overnight relief.
Afternoon high temperatures potentially as high as 105 degrees.
Overnight and morning lows in the 60s.
* WHERE...Lower Slopes of the Eastern Washington Cascades Crest.
* WHEN...Until 10 PM PDT Thursday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat and high humidity events.
* ADDITIONAL DETAILS...Major to locally Extreme HeatRisk (risk of
heat-related impacts) is anticipated through the duration of the
event.
* WHAT...Hot temperatures with modest overnight relief. Afternoon
high temperatures potentially exceeding 100 degrees. Overnight and
morning low temperatures in the mid to upper 50s.
* WHERE...Wallowa County.
* WHEN...From noon Monday to 10 PM PDT Thursday.
* IMPACTS...Hot temperatures may cause heat illnesses.
* ADDITIONAL DETAILS...Hottest temperatures will be in the canyons
of Wallowa County, especially Hells Canyon. Moderate to locally
Extreme HeatRisk (risk of heat-related impacts) is anticipated
through the duration of the event.
* WHAT...Dangerously hot conditions with little overnight relief.
Afternoon high temperatures potentially exceeding 110 degrees in
some areas. Overnight and morning low temperatures in the 60s and
70s.
* WHERE...Portions of north central and northeast Oregon and
central, south central, and southeast Washington.
* WHEN...Until 10 PM PDT Thursday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat and high humidity events.
* ADDITIONAL DETAILS...Major to locally Extreme HeatRisk (risk of
heat-related impacts) is anticipated through the duration of the
event.
* WHAT...Hot temperatures with modest overnight relief. Afternoon
high temperatures potentially reaching 105 degrees in the Grande
Ronde Valley, with highs in the 90s up to 100 degrees in the
mountains. Overnight and morning low temperatures in the 50 and
60s.
* WHERE...Blue Mountains of Oregon and Washington, and Grande Ronde
Valley.
* WHEN...From noon Monday to 10 PM PDT Thursday.
* IMPACTS...Hot temperatures may cause heat illnesses.
* ADDITIONAL DETAILS...Moderate to Major HeatRisk (risk of
heat-related impacts) is anticipated through the duration of the
event.
* WHAT...Dangerously hot conditions with little overnight relief.
Afternoon high temperatures potentially exceeding 105 degrees.
Overnight and morning lows in the upper 50s to 60s.
* WHERE...Central Oregon and John Day Basin.
* WHEN...Until 10 PM PDT Thursday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
* ADDITIONAL DETAILS...Major to locally Extreme HeatRisk (risk of
heat-related impacts) is anticipated through the duration of the
event.
...DRY AND LOCALLY BREEZY CONDITIONS CONTINUE...
While breezy conditions across the Kittitas Valley are expected to
cease overnight, central Oregon will then see breezy winds along
with single digit relative humidities during the day Saturday.
* AFFECTED AREA...Fire Weather Zones 610 East Slopes of Central
Oregon Cascades, 611 Deschutes National Forest, 640 Central
Mountains of Oregon and 642 Southern Blue and Strawberry
Mountains.
* WINDS...Northwest 10 to 15 mph with gusts up to 25 mph.
* RELATIVE HUMIDITY...As low as 6 percent.
* IMPACTS...Locally breezy conditions combined with very low
relative humidity will promote conditions conducive to rapid
fire spread and extreme fire behavior.
* WHAT...Dangerously hot conditions with high temperatures 105 to
115.
* WHERE...In California, western and central Siskiyou County. This
includes the cities of Yreka, Weed, Etna, and 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 Tuesday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat and high humidity events.
* ADDITIONAL DETAILS...This will be a multi day heat wave with the
warmest temperatures on Friday and Saturday. The Medford Airport's
chance to tie or exceed their all time temperature record of 115
has decreased to 10 percent.
* WHAT...High temperatures of 95 to 100 degrees with lows in the
upper 50's expected over multiple days.
* 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 Monday.
* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses. Area rivers will be cold and can cause shock to
swimmers.
* WHAT...High temperatures between 105 to 110 with low temperatures
in the mid to upper 60's expected over multiple days.
* WHERE...Central Douglas County and Eastern Douglas County
Foothills. This includes the cities of Roseburg, Toketee Falls,
and Sutherlin.
* WHEN...Until 9 PM PDT Monday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events, particularly for those working or
participating in outdoor activities. Area rivers will be cold and
can cause shock to swimmers.
* ADDITIONAL DETAILS...Dangerously hot conditions with heat index
values up to 100.
...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SUNDAY AFTERNOON
THROUGH SUNDAY EVENING FOR STRONG GUSTY WIND AND LOW RH FOR FIRE
WEATHER ZONES 280, 617, AND 624...
The National Weather Service in Medford has issued a Red Flag
Warning, which is in effect from 3 PM to 8 PM PDT Saturday.
* IMPACTS...Any fires that develop will likely spread rapidly.
* AFFECTED AREA...Fire weather zones 280...617 & 624. This
includes much of western Siskiyou County, eastern Douglas
County, most of Klamath County and western Lake County.
* WIND...Northwest wind increasing to 10 to 16 mph with gusts
as high as 25 mph.
* HUMIDITY...7 to 11 percent.
* DETAILED URL...View the hazard area in detail at
https://www.wrh.noaa.gov/map/?wfo=mfr
...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SUNDAY AFTERNOON
THROUGH SUNDAY EVENING FOR STRONG GUSTY WIND AND LOW RH FOR FIRE
WEATHER ZONES 616, 620, 621, 622, AND 623...
...RED FLAG WARNING WILL EXPIRE AT 8 PM PDT THIS EVENING FOR
STRONG GUSTY WIND AND LOW RH FOR FIRE WEATHER ZONES 616, 620,
621, 622, AND 623...
The National Weather Service in Medford has issued a Red Flag
Warning, which is in effect from 3 PM to 8 PM PDT Saturday.
* IMPACTS...Any fires that develop will likely spread rapidly.
* AFFECTED AREA...Fire weather zones 616...620...621...622 &
623. This includes central Douglas County, northern and
central Josephine County, Jackson,County, and western Klamath
County.
* WIND...Northwest wind increasing to 8 to 14 mph with gusts as
high as 22 mph.
* HUMIDITY...7 to 15 percent.
* DETAILED URL...View the hazard area in detail at
https://www.wrh.noaa.gov/map/?wfo=mfr