* 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 Wednesday.
* WHAT...Dangerously hot conditions with limited overnight relief.
Afternoon high temperatures of 95 to 110 degrees. Overnight low
temperatures in the mid-50s to lower 70s. This will pose a major
risk of heat-related illness.
* WHERE...Central Oregon and John Day Basin.
* WHEN...Until 10 PM PDT Wednesday.
* IMPACTS...Heat-related illnesses increase significantly during
extreme heat events.
* 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.
* WHAT...Continuing hot temperatures of 100 to 110 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 Wednesday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events. Area rivers will be cold and can cause shock
to swimmers.
* 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 Wednesday.
* IMPACTS...Hot temperatures may cause heat illnesses. Area rivers
will be cold and can cause shock to swimmers.
* 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...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...Dangerously hot conditions with limited overnight relief.
Afternoon high temperatures of 95 to 110 degrees. Overnight low
temperatures in the mid-50s to lower 70s. This will pose a major
risk of heat-related illness.
* WHERE...Central Oregon and John Day Basin.
* 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 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.
...HOT, DRY AND UNSTABLE ALONG WITH BREEZY WINDS TUESDAY THROUGH
THURSDAY...
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 Thursday, 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 wind and low relative humidity, which is in effect
from 2 PM to 11 PM PDT Wednesday. The Fire Weather Watch is no
longer in effect.
* AFFECTED AREA...Fire Weather Zones 641 Lower Columbia Basin of
Oregon 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
THURSDAY...
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 Thursday, 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 100.
* IMPACTS...Any new and existing fires have a strong potential
for extreme fire behavior.
* HAINES...As high as 6.
...HOT, DRY AND UNSTABLE ALONG WITH BREEZY WINDS TUESDAY THROUGH
THURSDAY...
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 Thursday, 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 followed by breezy winds
and low relative humidity, which is in effect Tuesday and
Wednesday.
* AFFECTED AREA...Fire Weather Zones 639 East Slopes of the
Northern Oregon Cascades and 640 Central Mountains of Oregon.
* TIMING...Today through Wednesday night.
* WINDS...Northwest 10 to 20 mph with gusts up to 30 mph.
* RELATIVE HUMIDITY...As low as 7 percent.
* TEMPERATURES...Up to 104.
* IMPACTS...Any new and existing fires have a strong potential
for extreme fire behavior.
* HAINES...As high as 6.
...HOT, DRY AND UNSTABLE ALONG WITH BREEZY WINDS TUESDAY THROUGH
THURSDAY...
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 Thursday, 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, 694 Yakama Alpine District and 695 East
Washington South Central Cascade Mountains.
* TIMING...Through Tuesday night.
* WINDS...Northwest 5 to 10 mph.
* RELATIVE HUMIDITY...As low as 11 percent.
* TEMPERATURES...Up to 101.
* IMPACTS...Any new and existing fires have a strong potential
for extreme fire behavior.
* HAINES...As high as 6.
...HOT, DRY AND UNSTABLE ALONG WITH BREEZY WINDS TUESDAY THROUGH
THURSDAY...
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 Thursday, 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 followed by breezy winds
and low relative humidity, which is in effect Tuesday and
Wednesday.
* AFFECTED AREA...Fire Weather Zones 639 East Slopes of the
Northern Oregon Cascades and 640 Central Mountains of Oregon.
* TIMING...Today through Wednesday night.
* WINDS...Northwest 10 to 20 mph with gusts up to 30 mph.
* RELATIVE HUMIDITY...As low as 7 percent.
* TEMPERATURES...Up to 104.
* IMPACTS...Any new and existing fires have a strong potential
for extreme fire behavior.
* HAINES...As high as 6.
* 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.
* ADDITIONAL DETAILS...Temperatures of 103 to 110 expected for
lower elevations through Friday.
* 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.
* ADDITIONAL DETAILS...Temperatures of 100 to 104 for lower
elevations expected.
* 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.
* ADDITIONAL DETAILS...Temperatures of 103 to 110 expected for
lower elevations through Friday, except slightly cooler
temperatures expected Thursday.
* 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.
* ADDITIONAL DETAILS...Temperatures of 100 to 104 for lower
elevations expected.
* 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.
* ADDITIONAL DETAILS...Temperatures of 103 to 110 expected for
lower elevations through Friday.
* 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.
* ADDITIONAL DETAILS...Temperatures of 103 to 110 expected for
lower elevations through Friday, except slightly cooler
temperatures expected Thursday.
