...HOT, DRY, UNSTABLE CONDITIONS ALONG THE EAST SLOPES OF THE
CASCADES MONDAY AND TUESDAY...
...FIRE WEATHER WATCH FOR WIND AND LOW HUMIDITY WEDNESDAY
AFTERNOON AND EVENING IN CENTRAL WASHINGTON...
* Affected Area: Fire Weather Zone 696 East Washington Central
Cascades (Zone 696) and Fire Weather Zone 697 East Portion of
North Cascades National Park/Lake Chelan National Recreation
Area (Zone 697).
* Winds: Through Tuesday: 4-10 mph. A weak push of northwest
winds Tuesday evening 10-15 mph. On Wednesday: west to northwest
10 to 20 mph with gusts up to 30 mph.
* Relative Humidities: Tuesday: 8 to 14 percent in the valleys
and 14 to 23 percent over the higher terrain. Wednesday:
10 to 15 percent in the valleys and 15 to 25 percent in the
higher terrain. Poor overnight humidity recovery.
* Temperatures: High temperatures 100 to 108 in the valleys, 80s
and 90s in the mountains.
* Impacts: hot, dry, and unstable conditions through Tuesday then
wind on Wednesday will lead to the potential for rapid fire
growth on any new or existing fires.
* WHAT...Dangerously hot conditions with limited overnight relief.
Afternoon high temperatures of 95 to 110 degrees. Overnight low
temperatures in the 60s to mid-70s. This will pose a major risk of
heat-related illness.
* WHERE...Portions of north central and northeast Oregon and
central, south central, and southeast Washington.
* WHEN...Until 10 PM PDT Wednesday.
* IMPACTS...Heat-related illnesses increase significantly during
extreme heat events.
* ADDITIONAL DETAILS...Hottest temperatures during this
long-duration heatwave are expected Today.
* WHAT...Dangerously hot conditions with limited overnight relief.
Afternoon high temperatures of 95 to 105 degrees. Overnight low
temperatures in the mid-50s to lower 70s. This will pose a major
risk of heat-related illness.
* WHERE...Lower Slopes of the Eastern Washington Cascades Crest.
* WHEN...Until 10 PM PDT Wednesday.
* IMPACTS...Heat-related illnesses increase significantly during
extreme heat events.
* ADDITIONAL DETAILS...Hottest temperatures during this
long-duration heatwave are expected Today.
* WHAT...Hot temperatures with modest overnight relief. Afternoon
high temperatures of 90 to 105 degrees, highest in lower valleys
and canyons. Overnight low temperatures in the mid 50s to upper
60s, lowest in high valleys. This will pose a moderate risk of
heat-related illness.
* WHERE...Blue Mountains of Oregon and Washington, Grande Ronde
Valley, and Wallowa County.
* WHEN...Until 10 PM PDT Wednesday.
* IMPACTS...Hot temperatures may cause heat-related illnesses.
* ADDITIONAL DETAILS...Hottest temperatures during this
long-duration heatwave are expected Today and Wednesday.
* WHAT...Hot temperatures with modest overnight relief. Afternoon
high temperatures of 90 to 105 degrees, highest along the East
Slopes of the Oregon Cascades. Overnight low temperatures in the
low 50s to upper 60s, lowest in valleys. This will pose a moderate
risk of heat-related illness.
* WHERE...In Oregon, East Slopes of the Oregon Cascades. In
Washington, Upper Slopes of the Eastern Washington Cascades Crest.
* WHEN...Until 10 PM PDT this evening.
* IMPACTS...Hot temperatures may cause heat-related illnesses.
* ADDITIONAL DETAILS...Hottest temperatures during this
long-duration heatwave are expected Today.
* 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 percent.
* TEMPERATURES...Highs in the mid 80s to mid 90s.
* 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.
...HOT, DRY AND UNSTABLE ALONG WITH BREEZY WINDS TUESDAY THROUGH
LATE WEDNESDAY...
.High pressure that has brought the hot temperatures the past
weekend is showing signs of breaking down. The instability will
increase as a result, and the combination of hot, dry and
unstable weather warrants Red Flag Warnings. In addition, breezy
winds will develop through the Cascade gaps and into portions of
the Columbia Basin Wednesday and will coincide with low relative
humidities in the afternoon and evening.
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 11 PM PDT Wednesday. The Fire Weather Watch is no
longer in effect.
* AFFECTED AREA...Fire Weather Zones 642 Southern Blue and
Strawberry Mountains, 643 Northern Blue Mountains of Oregon,
644 Central Blue Mountains, 645 Wallowa District, 692 Blue
Mountains of Washington and 693 Southeast Washington Grande
Ronde Valley.
* TIMING...Tuesday afternoon through Wednesday evening.
* WINDS...North 5 to 15 mph.
* RELATIVE HUMIDITY...As low as 7 percent.
* TEMPERATURES...Up to 101.
* IMPACTS...There is a chance of extreme fire behavior for any
new and existing fires.
* HAINES...As high as 6.
...HOT, DRY AND UNSTABLE ALONG WITH BREEZY WINDS TUESDAY THROUGH
LATE WEDNESDAY...
.High pressure that has brought the hot temperatures the past
weekend is showing signs of breaking down. The instability will
increase as a result, and the combination of hot, dry and
unstable weather warrants Red Flag Warnings. In addition, breezy
winds will develop through the Cascade gaps and into portions of
the Columbia Basin Wednesday and will coincide with low relative
humidities in the afternoon and evening.
* AFFECTED AREA...Fire Weather Zones 641 Lower Columbia Basin of
Oregon, 690 Kittitas Valley and 691 Lower Columbia Basin.
* WINDS...West 15 to 25 mph with gusts up to 35 mph.
* RELATIVE HUMIDITY...As low as 12 percent.
* IMPACTS...Breezy conditions combined with low RHs will result
in rapid fire spread and extreme fire behavior.
...HOT, DRY AND UNSTABLE ALONG WITH BREEZY WINDS TUESDAY THROUGH
LATE WEDNESDAY...
.High pressure that has brought the hot temperatures the past
weekend is showing signs of breaking down. The instability will
increase as a result, and the combination of hot, dry and
unstable weather warrants Red Flag Warnings. In addition, breezy
winds will develop through the Cascade gaps and into portions of
the Columbia Basin Wednesday and will coincide with low relative
humidities in the afternoon and evening.
* AFFECTED AREA...Fire Weather Zones 610 East Slopes of Central
Oregon Cascades, 611 Deschutes National Forest -minus Sisters
Ranger District, 639 East Slopes of the Northern Oregon
Cascades, 640 Central Mountains of Oregon, 694 Yakama Alpine
District and 695 East Washington South Central Cascade
Mountains.
* TIMING...Today through Tuesday night.
* WINDS...North 10 to 15 mph.
* RELATIVE HUMIDITY...As low as 8 percent.
* TEMPERATURES...Up to 106.
* IMPACTS...Any new and existing fires have a strong potential
for extreme fire behavior.
* HAINES...As high as 6.
* WHAT...Hot conditions with high temperatures in the mid to upper
90s and low temperatures in the lower to mid 60s. This will pose a
moderate to major risk of heat-related illness.
* WHERE...Hood Canal Area, Bellevue and Vicinity, Bremerton and
Vicinity, East Puget Sound Lowlands, Everett and Vicinity, Seattle
and Vicinity, Tacoma Area, West Slopes North Cascades and Passes,
West Slopes North Central Cascades and Passes, and West Slopes
South Central Cascades and Passes.
* WHEN...Until 5 PM PDT Wednesday.
* IMPACTS...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...Hot conditions with high temperatures mostly in the 90s and
low temperatures in the 60s. This will pose a moderate to major
risk of heat-related illness.
* WHERE...Admiralty Inlet Area, Eastern Strait of Juan de Fuca,
Olympics, San Juan County, Western Skagit County, Western Whatcom
County, Lower Chehalis Valley Area, and Southwest Interior.
* WHEN...Until 10 PM PDT this evening.
* IMPACTS...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...Hot conditions with high temperatures away from the
immediate coastline in the 80s. This will pose a moderate risk of
heat-related illness.
* WHERE...Central Coast, North Coast, and Western Strait of Juan De
Fuca.
* WHEN...Until 11 AM PDT this morning.
* 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 during the day for the valleys.
Highs 95 to 103. Overnight lows will be in the 50s to low 60s.
* WHERE...Mullan, Flowery Trail Road, Chewelah, Athol, Chesaw Road,
Eastport, Ione, Springdale-Hunters Road, Deer Park, Lookout Pass,
Newport, Highway 20 Wauconda Summit, Dobson Pass, Sherman Pass,
Boulder Creek Road, Metaline, Wauconda, Orin-Rice Road, Osburn,
Fernwood, Colville, Northport, Inchelium, Kellogg, St. Maries,
Tiger, Bonners Ferry, Metaline Falls, Kettle Falls, Pinehurst,
Sandpoint, Clark Fork, Wallace, Republic, Priest River, Fruitland,
Schweitzer Mountain Road, and Fourth Of July Pass.
* WHEN...Until 10 PM PDT Wednesday.
* IMPACTS...Hot temperatures may cause heat illnesses.
* WHAT...Hot conditions during the day for the valleys. Highs will
be in the 90s except near 100 in Stehekin. Overnight lows will be
in the 50s to low 60s.
* WHERE...Stehekin, Stevens Pass, and Holden Village.
* WHEN...Until 10 PM PDT Wednesday.
* IMPACTS...Hot temperatures may cause heat illnesses.
* WHAT...Dangerously hot conditions during the day with little
relief overnight. Highs 100 to 108 Tuesday and Wednesday.
Overnight lows will be in the 60s to mid 70s.
* WHERE...Portions of North and North Central Idaho and Central,
East Central, North Central, Northeast, and Southeast Washington.
* WHEN...Until 10 PM PDT Wednesday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat.
...HOT, DRY AND UNSTABLE ALONG WITH BREEZY WINDS TUESDAY THROUGH
LATE WEDNESDAY...
.High pressure that has brought the hot temperatures the past
weekend is showing signs of breaking down. The instability will
increase as a result, and the combination of hot, dry and
unstable weather warrants Red Flag Warnings and Fire Weather
Watches. In addition, breezy winds will develop through the
Cascade gaps and into portions of the Columbia Basin Wednesday
and will coincide with low relative humidities in the afternoon
and evening.
* AFFECTED AREA...Fire Weather Zones 641 Lower Columbia Basin of
Oregon, 690 Kittitas Valley and 691 Lower Columbia Basin.
* WINDS...West 15 to 25 mph with gusts up to 35 mph.
* RELATIVE HUMIDITY...As low as 12 percent.
* IMPACTS...Breezy conditions combined with low RHs will result
in rapid fire spread and extreme fire behavior.
...HOT, DRY AND UNSTABLE ALONG WITH BREEZY WINDS TUESDAY THROUGH
LATE WEDNESDAY...
.High pressure that has brought the hot temperatures the past
weekend is showing signs of breaking down. The instability will
increase as a result, and the combination of hot, dry and
unstable weather warrants Red Flag Warnings and Fire Weather
Watches. In addition, breezy winds will develop through the
Cascade gaps and into portions of the Columbia Basin Wednesday
and will coincide with low relative humidities in the afternoon
and evening.
* AFFECTED AREA...Fire Weather Zones 642 Southern Blue and
Strawberry Mountains, 643 Northern Blue Mountains of Oregon,
644 Central Blue Mountains, 645 Wallowa District, 692 Blue
Mountains of Washington and 693 Southeast Washington Grande
Ronde Valley.
* TIMING...Tuesday afternoon through Wednesday evening.
* WINDS...Northwest 10 to 15 mph.
* RELATIVE HUMIDITY...As low as 9 percent.
* TEMPERATURES...Up to 101.
* IMPACTS...There is a chance of extreme fire behavior for any
new and existing fires.
* HAINES...As high as 6.
...HOT, DRY AND UNSTABLE ALONG WITH BREEZY WINDS TUESDAY THROUGH
LATE WEDNESDAY...
.High pressure that has brought the hot temperatures the past
weekend is showing signs of breaking down. The instability will
increase as a result, and the combination of hot, dry and
unstable weather warrants Red Flag Warnings and Fire Weather
Watches. In addition, breezy winds will develop through the
Cascade gaps and into portions of the Columbia Basin Wednesday
and will coincide with low relative humidities in the afternoon
and evening.
* AFFECTED AREA...Fire Weather Zones 610 East Slopes of Central
Oregon Cascades, 611 Deschutes National Forest -minus Sisters
Ranger District, 639 East Slopes of the Northern Oregon
Cascades, 640 Central Mountains of Oregon, 694 Yakama Alpine
District and 695 East Washington South Central Cascade
Mountains.
* TIMING...Today through Tuesday night.
* WINDS...North 5 to 15 mph.
* RELATIVE HUMIDITY...As low as 8 percent.
* TEMPERATURES...Up to 105.
* IMPACTS...Any new and existing fires have a strong potential
for extreme fire behavior.
* HAINES...As high as 6.
* 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 20 percent with moderate to
poor overnight recovery.
* TEMPERATURES...High temperatures 85 to 95 degrees with overnight
lows in the 60s.
* 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...Hot conditions with high temperatures in the mid to upper
90s and low temperatures in the lower to mid 60s. This will pose a
moderate to major risk of heat-related illness.
* WHERE...Hood Canal Area, Bellevue and Vicinity, Bremerton and
Vicinity, East Puget Sound Lowlands, Everett and Vicinity, Seattle
and Vicinity, Tacoma Area, West Slopes North Cascades and Passes,
West Slopes North Central Cascades and Passes, and West Slopes
South Central Cascades and Passes.
* WHEN...Until 5 PM PDT Wednesday.
* IMPACTS...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.
* ADDITIONAL DETAILS...The warmest locations will remain in the
urban centers, as well as the foothills and valleys of the
Cascades where the cooling marine influence will be the last to
arrive.
