...HOT, DRY AND UNSTABLE ALONG WITH BREEZY WINDS THROUGH
THURSDAY...
.The high pressure driving this ongoing heat wave will begin to
weaken today, but will result in breezy and unstable conditions
through at least Thursday. Even as temperatures cool down
slightly over the coming days, relative humidities will remain
very low in the teens and single digits. This, combined with
incoming breezy conditions through the Cascade Gaps and spreading
into the Basin, will result in critical fire weather conditions.
* AFFECTED AREA...Fire Weather Zones 639 East Slopes of the
Northern Oregon Cascades and 640 Central Mountains of Oregon.
* TIMING...Through this evening.
* WINDS...Northwest 10 to 15 mph with gusts up to 25 mph.
* RELATIVE HUMIDITY...As low as 11 percent.
* TEMPERATURES...Up to 98.
* IMPACTS...Any new and existing fires have a strong potential
for extreme fire behavior. Breezy conditions may also lead to
rapid fire spread.
* HAINES...As high as 5.
...HOT, DRY AND UNSTABLE ALONG WITH BREEZY WINDS THROUGH
THURSDAY...
.The high pressure driving this ongoing heat wave will begin to
weaken today, but will result in breezy and unstable conditions
through at least Thursday. Even as temperatures cool down
slightly over the coming days, relative humidities will remain
very low in the teens and single digits. This, combined with
incoming breezy conditions through the Cascade Gaps and spreading
into the Basin, will result in critical fire weather conditions.
* AFFECTED AREA...Fire Weather Zones 641 Lower Columbia Basin of
Oregon and 691 Lower Columbia Basin.
* WINDS...West 10 to 20 mph with gusts up to 30 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 THROUGH
THURSDAY...
.The high pressure driving this ongoing heat wave will begin to
weaken today, but will result in breezy and unstable conditions
through at least Thursday. Even as temperatures cool down
slightly over the coming days, relative humidities will remain
very low in the teens and single digits. This, combined with
incoming breezy conditions through the Cascade Gaps and spreading
into the Basin, will result in critical fire weather conditions.
The National Weather Service in Pendleton has issued a Red Flag
Warning for wind and low relative humidity, which is in effect
until 11 PM PDT this evening.
* AFFECTED AREA...Fire Weather Zone 610 East Slopes of Central
Oregon Cascades.
* TIMING...Through 11 PM tonight.
* WINDS...Northwest 8 to 15 mph with gusts up to 30 mph.
* RELATIVE HUMIDITY...As low as 13 percent.
* TEMPERATURES...Up to 98.
* IMPACTS...Any new and existing fires have a strong potential
for extreme fire behavior. Breezy conditions may also lead to
rapid fire spread.
* HAINES...As high as 5.
* WHAT...For the Excessive Heat Warning, dangerously hot
conditions through Friday expected, especially in the lower
elevations. For the Excessive Heat Watch, dangerously hot
conditions possible.
* WHERE...Portions of southwest and west central Idaho and
southeast Oregon.
* WHEN...For the Excessive Heat Warning, until midnight MDT /11 PM
PDT/ Friday night. For the Excessive Heat Watch, from early
Saturday through Sunday evening.
* IMPACTS...Extreme heat will significantly increase the
potential for heat related illnesses, particularly for those
working or participating in outdoor activities.
* WHAT...For the Excessive Heat Warning, dangerously hot
conditions through Friday expected, especially in the lower
elevations. For the Excessive Heat Watch, dangerously hot
conditions possible.
* WHERE...Baker County.
* WHEN...For the Excessive Heat Warning, until 11 PM PDT Friday.
For the Excessive Heat Watch, from early Saturday through
Sunday evening.
* IMPACTS...Extreme heat will significantly increase the
potential for heat related illnesses, particularly for those
working or participating in outdoor activities.
* WHAT...For the Heat Advisory, hot temperatures expected in the
lower elevations. For the Excessive Heat Watch, dangerously
hot conditions possible.
* WHERE...Southwest Highlands, Western Magic Valley and Southern
Twin Falls County.
* WHEN...For the Heat Advisory, until midnight MDT Friday night.
For the Excessive Heat Watch, from early Saturday through
Sunday evening.
* IMPACTS...Extreme heat will significantly increase the
potential for heat related illnesses, particularly for those
working or participating in outdoor activities.
* WHAT...For the Heat Advisory, hot temperatures expected in the
lower elevations. For the Excessive Heat Watch, dangerously
hot conditions possible.
* WHERE...Southwest Highlands, Western Magic Valley and Southern
Twin Falls County.
* WHEN...For the Heat Advisory, until midnight MDT Friday night.
For the Excessive Heat Watch, from early Saturday through
Sunday evening.
* IMPACTS...Extreme heat will significantly increase the
potential for heat related illnesses, particularly for those
working or participating in outdoor activities.
* WHAT...For the Excessive Heat Warning, dangerously hot
conditions through Friday expected, especially in the lower
elevations. For the Excessive Heat Watch, dangerously hot
conditions possible.
* WHERE...Portions of southwest and west central Idaho and
southeast Oregon.
* WHEN...For the Excessive Heat Warning, until midnight MDT /11 PM
PDT/ Friday night. For the Excessive Heat Watch, from early
Saturday through Sunday evening.
* IMPACTS...Extreme heat will significantly increase the
potential for heat related illnesses, particularly for those
working or participating in outdoor activities.
* WHAT...For the Excessive Heat Warning, dangerously hot
conditions through Friday expected, especially in the lower
elevations. For the Excessive Heat Watch, dangerously hot
conditions possible.
* WHERE...Baker County.
* WHEN...For the Excessive Heat Warning, until 11 PM PDT Friday.
For the Excessive Heat Watch, from early Saturday through
Sunday evening.
* IMPACTS...Extreme heat will significantly increase the
potential for heat related illnesses, particularly for those
working or participating in outdoor activities.
An Air Quality Alert has been issued by the following agencies:
Washington Department of Ecology
An Air Quality Alert, issued for all of Chelan county plus
the Methow Valley down to Brewster in Okanogan county on Tuesday
7/9/2024, remains in effect until further notice, due to
expected smoke from the Pioneer fire and other
regional wildfires. Particulate matter (PM2.5) may reach Unhealthy
and Unhealthy for Sensitive Groups levels.
Health Impacts and Recommended Actions: When air quality is Unhealthy,
everyone should reduce exposure. Limit time outside, avoid strenuous
activity, and follow tips for cleaner indoor air. When air quality
is Unhealthy for Sensitive Groups, sensitive groups should take steps
to reduce exposure. Limit time outside, avoid strenuous outdoor
activity, and follow tips for cleaner indoor air. Everyone should
watch for symptoms as a sign to reduce exposure.
Agricultural and outdoor burning restrictions are in effect.
...RED FLAG WARNING FOR WIND AND LOW HUMIDITY THIS
AFTERNOON AND EVENING IN CENTRAL WASHINGTON...
* Affected Area: Fire Weather Zone 696 East Washington Central
Cascades (Zone 696), Fire Weather Zone 697 East Portion of
North Cascades National Park/Lake Chelan National Recreation
Area (Zone 697), 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 10 to 20 mph with gusts up to 35 mph.
* Relative Humidities: 7 to 16 percent in the valleys and 16 to
26 percent over the higher terrain.
* Impacts: Any new or existing fires will have the potential to
spread rapidly.
* WHAT...High temperatures of 95 to 102 degrees with lows in the mid
to upper 50s expected.
* 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 this evening.
* IMPACTS...Hot temperatures may cause heat illnesses. Area rivers
will be cold and can cause shock to swimmers.
* WHAT...Continuing hot temperatures of 100 to 105 will continue on
Wednesday.
* WHERE...In California, western and central Siskiyou County. This
includes the cities of Yreka, Weed, Etna, 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 this evening.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events. Area rivers will be cold and can cause shock
to swimmers.
...RED FLAG WARNING FOR WIND AND LOW HUMIDITY WEDNESDAY AFTERNOON
AND EVENING IN CENTRAL WASHINGTON...
* Affected Area: Fire Weather Zone 696 East Washington Central
Cascades (Zone 696), Fire Weather Zone 697 East Portion of
North Cascades National Park/Lake Chelan National Recreation
Area (Zone 697), 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 10 to 20 mph with gusts up to 35 mph.
* Relative Humidities: 8 to 16 percent in the valleys and 16 to
22 percent over the higher terrain.
* Impacts: Any new or existing fires will have the potential to
spread rapidly.
* WHAT...For the Excessive Heat Warning, dangerously hot
conditions through Friday expected, especially in the lower
elevations. For the Excessive Heat Watch, dangerously hot
conditions possible.
* WHERE...Portions of southwest and west central Idaho and
southeast Oregon.
* WHEN...For the Excessive Heat Warning, until midnight MDT /11
PM PDT/ Friday night. For the Excessive Heat Watch, from late
Friday night through Sunday evening.
* IMPACTS...Extreme heat will significantly increase the
potential for heat related illnesses, particularly for those
working or participating in outdoor activities.
* WHAT...For the Excessive Heat Warning, dangerously hot
conditions through Friday expected, especially in the lower
elevations. For the Excessive Heat Watch, dangerously hot
conditions possible.
* WHERE...Baker County.
* WHEN...For the Excessive Heat Warning, until 11 PM PDT Friday.
For the Excessive Heat Watch, from Friday evening through
Sunday evening.
* IMPACTS...Extreme heat will significantly increase the
potential for heat related illnesses, particularly for those
working or participating in outdoor activities.
* WHAT...For the Heat Advisory, hot temperatures expected in the
lower elevations. For the Excessive Heat Watch, dangerously
hot conditions possible.
* WHERE...Southwest Highlands, Western Magic Valley and Southern
Twin Falls County.
* WHEN...For the Heat Advisory, until midnight MDT Friday night.
For the Excessive Heat Watch, from late Friday night through
Sunday evening.
* IMPACTS...Extreme heat will significantly increase the
potential for heat related illnesses, particularly for those
working or participating in outdoor activities.
* WHAT...For the Excessive Heat Warning, dangerously hot
conditions through Friday expected, especially in the lower
elevations. For the Excessive Heat Watch, dangerously hot
conditions possible.
* WHERE...Portions of southwest and west central Idaho and
southeast Oregon.
* WHEN...For the Excessive Heat Warning, until midnight MDT /11
PM PDT/ Friday night. For the Excessive Heat Watch, from late
Friday night through Sunday evening.
* IMPACTS...Extreme heat will significantly increase the
potential for heat related illnesses, particularly for those
working or participating in outdoor activities.
* WHAT...For the Excessive Heat Warning, dangerously hot
conditions through Friday expected, especially in the lower
elevations. For the Excessive Heat Watch, dangerously hot
conditions possible.
* WHERE...Baker County.
* WHEN...For the Excessive Heat Warning, until 11 PM PDT Friday.
For the Excessive Heat Watch, from Friday evening through
Sunday evening.
* IMPACTS...Extreme heat will significantly increase the
potential for heat related illnesses, particularly for those
working or participating in outdoor activities.
* WHAT...For the Heat Advisory, hot temperatures expected in the
lower elevations. For the Excessive Heat Watch, dangerously
hot conditions possible.
* WHERE...Southwest Highlands, Western Magic Valley and Southern
Twin Falls County.
* WHEN...For the Heat Advisory, until midnight MDT Friday night.
For the Excessive Heat Watch, from late Friday night through
Sunday evening.
* IMPACTS...Extreme heat will significantly increase the
potential for heat related illnesses, particularly for those
working or participating in outdoor activities.