* WHAT...Hot conditions during the day for the valleys. Highs 93 to
105. Overnight lows will be in the upper 50s and 60s.
* WHERE...Portions of North and North Central Idaho and Central,
East Central, North Central, Northeast, and Southeast Washington.
* WHEN...Until 10 PM PDT Sunday.
* IMPACTS...Hot temperatures may cause heat illnesses.
...DRY AND BREEZY CONDITIONS EXPECTED IN THE LEE OF THE CASCADES
ON SUNDAY AFTERNOON AND EVENING...
Breezy winds, hot temperatures, and low relative humidity values
will occur over the area on Sunday afternoon and evening. This
will result in an elevated fire risk on existing or new fires.
* Affected Area: Fire Weather Zone 705 Foothills of Central
Washington Cascades (Zone 705) and Fire Weather Zone 706
Waterville Plateau (Zone 706).
* Winds: West 10 to 20 mph with gusts up to 35 mph.
* Relative Humidities: 10 to 18 percent.
* Impacts: The combination of gusty winds, low relative humidity
values, hot temperatures, and dried fuels could lead to rapid
fire spread on existing or new fires.
* WHAT...Hot conditions with temperatures 95-105 degrees expected.
This will pose a moderate to locally major risk of heat-related
illness.
* WHERE...Portions of central, north central, and northeast Oregon
and central, south central, and southeast Washington.
* WHEN...Until 10 PM PDT Sunday.
* 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.
...HOT, DRY, AND UNSTABLE WITH A CHANCE OF THUNDERSTORMS OVER
SOUTHEAST OREGON THIS WEEKEND...
...DRY AND BREEZY CONDITIONS IN THE COLUMBIA BASIN AND KITTITAS
VALLEY SUNDAY...
Hot, dry, and unstable conditions coupled with a threat of
isolated thunderstorms over southeast Oregon this weekend brings a
risk of dry lightning startups and potential for extreme fire
behavior. Breezy winds will also develop through the Cascade gaps
Sunday, and will coincide with critically low RHs in the
afternoon.
* 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 13 percent.
* IMPACTS...The combination of sustained wind and low relative
humidity will result in conditions conducive to rapid fire
spread and extreme fire behavior.
* WHAT...Hot conditions with temperatures 95-105 degrees expected.
This will pose a moderate to locally major risk of heat-related
illness.
* WHERE...Portions of central, north central, and northeast Oregon
and central, south central, and southeast Washington.
* WHEN...Until 10 PM PDT Sunday.
* 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.
...DRY AND BREEZY CONDITIONS EXPECTED IN THE LEE OF THE CASCADES
ON SUNDAY AFTERNOON AND EVENING...
Breezy winds, hot temperatures, and low relative humidity values
will occur over the area on Sunday afternoon and evening. This
will result in an elevated fire risk on existing or new fires.
The National Weather Service in Spokane has issued a Fire Weather
Watch for wind and low relative humidity, which is in effect from
Sunday afternoon through Sunday evening.
* Affected Area: Fire Weather Zone 705 Foothills of Central
Washington Cascades (Zone 705) and Fire Weather Zone 706
Waterville Plateau (Zone 706).
* Winds: West 10 to 20 mph with gusts up to 35 mph.
* Relative Humidities: 10 to 18 percent.
* Impacts: The combination of gusty winds, low relative humidity
values, hot temperatures, and dried fuels could lead to rapid
fire spread on existing or new fires.
* WHAT...Hot conditions with temperatures 95-105 degrees expected.
This will pose a moderate to locally major risk of heat-related
illness.
* WHERE...Portions of central, north central, and northeast Oregon
and central, south central, and southeast Washington.
* WHEN...Until 10 PM PDT Sunday.
* 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.
...CHANCE OF THUNDERSTORMS OVER SOUTHEAST OREGON THIS WEEKEND...
...DRY AND BREEZY CONDITIONS IN THE COLUMBIA BASIN AND KITTITAS
VALLEY...
A threat of isolated thunderstorms over southeast Oregon this
weekend brings a risk of dry lightning startups. Breezy winds will
also develop through the Cascade gaps Sunday, and will coincide
with critically low RHs in the afternoon.
The National Weather Service in Pendleton has issued a Fire
Weather Watch for wind and low relative humidity, which is in
effect from Sunday afternoon through Sunday 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 13 percent.
* IMPACTS...New fire starts with cloud-to-ground lightning should
be expected with any storms that develop. Gusty outflow winds
will threaten fires with rapid growth.
* WHAT...Hot conditions during the day for the valleys. Highs 95 to
105. Overnight lows will be in the upper 50s and 60s.
* WHERE...Central and eastern Washington and parts of the Idaho
Panhandle including the Okanogan Valley, Wenatchee and Waterville
Plateau, Columbia Basin, Washington Palouse, Spokane and Coeur
d'Alene area, the Lewiston Clarkston Valley and Camas Prairie.
* WHEN...Until 10 PM PDT Sunday.
* IMPACTS...Hot temperatures may cause heat illnesses.
* WHAT...Hot conditions during the day for the valleys. Highs 93 to
100. Overnight lows will be in the upper 50s and 60s.
* WHERE...The Cascade valleys, the valleys of the Okanogan Highlands
and northeast Washington, the north Idaho Panhandle and the Idaho
Palouse.
* WHEN...Until 10 PM PDT Sunday.
* IMPACTS...Hot temperatures may cause heat illnesses.
* WHAT...Hot conditions during the day for the valleys. Highs 95 to
105. Overnight lows will be in the upper 50s and 60s.
* WHERE...Portions of North and North Central Idaho and Central,
East Central, North Central, Northeast, and Southeast Washington.
* WHEN...Until 10 PM PDT Sunday.
* IMPACTS...Hot temperatures may cause heat illnesses.
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 will remain
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.
* WHAT...Hot conditions with temperatures 95-105 degrees expected.
This will pose a moderate to locally major risk of heat-related
illness.
* WHERE...Portions of central, north central, and northeast Oregon
and central, south central, and southeast Washington.
* WHEN...From noon today to 10 PM PDT Sunday.
* 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 95-105 degrees expected.
This will pose a moderate to locally major risk of heat-related
illness.
* WHERE...Portions of central, north central, and northeast Oregon
and central, south central, and southeast Washington.
* WHEN...From noon today to 10 PM PDT Sunday.
* 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 during the day for the valleys. Highs 95 to
104. Overnight lows will be in the upper 50s to upper 60s.
* WHERE...Portions of North and North Central Idaho and Central,
East Central, North Central, Northeast, and Southeast Washington.
* WHEN...From noon today to 10 PM PDT Sunday.
* IMPACTS...Hot temperatures may cause heat illnesses.
...HOT, DRY, AND BREEZY CONDITIONS CONTINUE THROUGH THE Kittitas
VALLEY...
...CHANCE OF THUNDERSTORMS SOUTHEAST OREGON THIS WEEKEND...
.Breezy winds and low humidity will continue in the Kittitas
Valley this afternoon and evening. Fire weather concerns will
shift to the threat of thunderstorms this weekend, particularly
over southeast Oregon.
* AFFECTED AREA...Fire Weather Zone 690 Kittitas Valley.
* WINDS...Northwest 15 to 25 mph with gusts up to 35 mph.
* RELATIVE HUMIDITY...As low as 16 percent.
* IMPACTS...Breezy conditions combined with low RHs will result
in rapid fire spread and extreme fire behavior.
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.
...HOT, DRY, AND BREEZY CONDITIONS CONTINUE THROUGH THE CASCADE
GAPS...
Hot and dry conditions are expected to persist for the next
several days, however breezy winds are largely expected to subside
for most of the forecast area, save for the Cascade Gaps. Gusts
are expected to reach 30 to 40 mph across the Kittitas Valley,
where a Red Flag Warning remains in effect. For the rest of the
area, winds may contain a slight breeze, but are largely expected
to remain below critical thresholds.
* AFFECTED AREA...Fire Weather Zone 690 Kittitas Valley.
* WINDS...Northwest 15 to 20 mph with gusts up to 40 mph.
* RELATIVE HUMIDITY...As low as 15 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.
* AFFECTED AREA...Fire Weather Zone 690 Kittitas Valley.
* WINDS...Northwest 15 to 25 mph with gusts up to 40 mph.
* RELATIVE HUMIDITY...As low as 16 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.
* 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 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.
