...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...
The National Weather Service in Spokane has issued a Fire Weather
Watch for wind and low relative humidity, which is in effect from
Wednesday afternoon through Wednesday evening.
* Affected Area: Fire Weather Zone 703 Okanogan Valley (Zone
703), Fire Weather Zone 704 Methow Valley (Zone 704), Fire
Weather Zone 705 Foothills of Central Washington Cascades
(Zone 705), Fire Weather Zone 706 Waterville Plateau (Zone
706) and Fire Weather Zone 707 Western Columbia Basin (Zone
707).
* Winds: West 13 to 20 mph with gusts up to 35 mph. In the
Okanogan Valley, winds starting off south 10 to 18 mph and
shifting to west 10 to 20 mph.
* Relative Humidities: 8 to 15 percent.
* Impacts: Any new or existing fires will have the potential to
spread rapidly.
...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...
...FIRE WEATHER WATCH REMAINS IN EFFECT FROM WEDNESDAY AFTERNOON
THROUGH WEDNESDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR
THE EAST SLOPES OF THE CENTRAL AND NORTHERN CASCADES (FIRE
WEATHER ZONES 696, 697)...
The National Weather Service in Spokane has issued a Fire Weather
Watch for wind and low relative humidity, which is in effect from
Wednesday afternoon through Wednesday evening.
* 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: Through 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.
...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 698 East Washington North
Cascades (Zone 698).
* Relative Humidities: Minimum values 10 to 16 percent in the
valleys and 14 to 23 percent over the higher terrain. Poor
overnight humidity recovery.
* Temperatures: High temperatures 97 to 104 in the valleys, 80s
and 90s in the mountains.
* Impacts: Hot, dry, and unstable conditions will lead to the
potential for rapid fire growth on any new or existing fires.
* 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 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 Tuesday and Wednesday.
* 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 Tuesday.
* 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 Tuesday.
* 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 Tuesday.
* IMPACTS...Hot temperatures may cause heat-related illnesses.
* ADDITIONAL DETAILS...Hottest temperatures during this
long-duration heatwave are expected Tuesday.
The Southwest Clean Air Agency, the Oregon Department of Environmental
Quality, and the Lane Regional Air Protection Agency has issued an
Air Quality Advisory, which is IN EFFECT UNTIL 8 PM PDT TUESDAY.
An Air Quality Advisory for Ozone has been issued. 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 Tuesday evening.
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.swcleanair.gov
www.oregon.gov/DEQ
www.lrapa.org
* 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 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 95 to 105 Monday, 100 to 108 Tuesday and
Wednesday. Overnight lows will be in 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.
* WHAT...Dangerously hot conditions during the day for the valleys.
Highs 95 to 103. Overnight lows will be in 50s to low 60s.
* WHERE...Ione, Flowery Trail Road, Boulder Creek Road, Kellogg, St.
Maries, Chesaw Road, Springdale-Hunters Road, Highway 20 Wauconda
Summit, Tiger, Kettle Falls, Northport, Republic, Chewelah,
Metaline Falls, Inchelium, Clark Fork, Mullan, Sandpoint,
Schweitzer Mountain Road, Fourth Of July Pass, Orin-Rice Road,
Metaline, Fernwood, Wauconda, Fruitland, Priest River, Sherman
Pass, Deer Park, Eastport, Lookout Pass, Osburn, Dobson Pass,
Newport, Wallace, Pinehurst, Colville, Athol, and Bonners Ferry.
* WHEN...Until 10 PM PDT Wednesday.
* IMPACTS...Hot temperatures may cause heat illnesses.
CORRECTED TO ADD WA695
...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 and 692 Blue
Mountains of Washington.
* TIMING...Tuesday afternoon through Wednesday evening.
* WINDS...Northwest 5 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.
CORRECTED TO ADD WA695
...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.
The National Weather Service in Pendleton has issued a Fire
Weather Watch for wind and low relative humidity, which is in
effect from Tuesday afternoon through Wednesday evening.
* AFFECTED AREA...Fire Weather Zone 693 Southeast Washington
Grande Ronde Valley.
* TIMING...Tuesday afternoon through Wednesday evening.
* WINDS...Northwest 5 to 15 mph.
* RELATIVE HUMIDITY...As low as 11 percent.
* TEMPERATURES...Up to 106.
* IMPACTS...There is a chance of extreme fire behavior for any
new and existing fires.
* HAINES...As high as 6.
CORRECTED TO ADD WA695
...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.
CORRECTED TO ADD WA695
...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 10 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.
* 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.
* 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 Tuesday.
* 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.
* 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 Tuesday.
* 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.
* WHERE...Blue Mountains of Oregon and Washington, Grande Ronde
Valley, and Wallowa County.
* WHEN...From noon today to 10 PM PDT Wednesday.
* IMPACTS...Hot temperatures may cause heat-related illnesses.
* ADDITIONAL DETAILS...Hottest temperatures during this
long-duration heatwave are expected Tuesday 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.
* WHERE...In Oregon, East Slopes of the Oregon Cascades. In
Washington, Upper Slopes of the Eastern Washington Cascades Crest.
* WHEN...From noon today to 10 PM PDT Tuesday.
* IMPACTS...Hot temperatures may cause heat-related illnesses.
* ADDITIONAL DETAILS...Hottest temperatures during this
long-duration heatwave are expected Tuesday.
