* WHAT...Dangerously hot conditions with high temperatures up to
110 possible at low elevations. Hottest days Sunday and Monday.
* WHERE...Portions of south central, southwest and west central
Idaho and southeast Oregon.
* WHEN...From Thursday afternoon through Tuesday evening.
* IMPACTS...Extreme heat will significantly increase the potential
for heat related illnesses, particularly for those working or
participating in outdoor activities.
* AFFECTED AREA...In Washington, Fire Weather Zone 634 Southern
Gifford Pinchot National Forest and Fire Weather Zone 635 Mt.
Adams Ranger District of the Gifford-Pinchot National Forest.
* THUNDERSTORMS...Isolated to scattered thunderstorms.
* IMPACTS...Lightning and critically dry fuels may result in
numerous fire starts. Thunderstorm outflow winds may result in
erratic fire spread.
* IMPACTS...Frequent lightning and critically dry fuels may
result in numerous fire starts. Thunderstorm outflow winds may
result in erratic fire spread.
* AFFECTED AREA...In Washington, Fire Weather Zone 636 Western
Columbia River Gorge in Oregon and Washington.
* THUNDERSTORMS...Isolated to scattered thunderstorms.
* IMPACTS...Lightning and critically dry fuels may result in
numerous fire starts. Thunderstorm outflow winds may result in
erratic fire spread.
* IMPACTS...Frequent lightning and critically dry fuels may
result in numerous fire starts. Thunderstorm outflow winds may
result in erratic fire spread.
* AFFECTED AREA...In Oregon, Fire Weather Zone 688 Mt. Hood
National Forest Region.
* THUNDERSTORMS...Isolated to scattered thunderstorms.
* IMPACTS...Lightning and critically dry fuels may result in
numerous fire starts.
* OUTFLOW WINDS...Gusts up to 40 mph possible.
* IMPACTS...Frequent lightning and critically dry fuels may
result in numerous fire starts. Thunderstorm outflow winds may
result in erratic fire spread.
* WHAT...Hot conditions. High temperatures up to 102 degrees
accompanied by overnight lows in the mid to upper 60s. This will
pose a moderate to locally major risk of heat-related illness.
* WHERE...Lower Columbia Basin of Oregon and Washington.
* WHEN...Until 10 PM PDT Thursday.
* 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. High temperatures 98 to 102
degrees accompanied by overnight lows in the mid 60s to around 70.
This will pose a major risk of heat-related illness.
* WHERE...Kittitas Valley and Yakima Valley.
* WHEN...Until 10 PM PDT Thursday.
* IMPACTS...Extreme 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. High temperatures up to 100 degrees
accompanied by morning lows in the mid 60s to lower 70s. This will
pose a moderate to locally major risk of heat-related illness.
* WHERE...Foothills of the Blue Mountains of Oregon and Washington,
Eastern Columbia River Gorge of Oregon and Washington, John Day
Basin, North Central Oregon, and Simcoe Highlands.
* WHEN...Until 10 PM PDT this evening.
* 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. High temperatures up to 102 degrees
accompanied by overnight lows in the mid to upper 60s. This will
pose a moderate to locally major risk of heat-related illness.
* WHERE...Lower Columbia Basin of Oregon and Washington.
* WHEN...Until 10 PM PDT Thursday.
* 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. High temperatures up to 100 degrees
accompanied by morning lows in the mid 60s to lower 70s. This will
pose a moderate to locally major risk of heat-related illness.
* WHERE...Foothills of the Blue Mountains of Oregon and Washington,
Eastern Columbia River Gorge of Oregon and Washington, John Day
Basin, North Central Oregon, and Simcoe Highlands.
* WHEN...Until 10 PM PDT this evening.
* 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.
* AFFECTED AREA...Fire Weather Zone 658 West Slopes of the North
Cascades Generally above 1500 Feet.
* THUNDERSTORMS...Scattered thunderstorms with LAL 3 are
expected to develop along and near the crest of the Cascades
as early as late morning and most likely during the afternoon
and evening hours.
* OUTFLOW WINDS...Gusty and erratic winds are possible in the
vicinity of any thunderstorms that develop.
* IMPACTS...Scattered lightning in dry fuels can cause multiple
fire starts. Thunderstorms can also bring sudden sharp wind
shifts on existing fires, causing rapid changes in a fire's
rate of spread and direction of spread. Thunderstorm outflow
winds can be a threat for several hours following the start of
a new lightning-caused fire. If a fire were to begin, air
quality may diminish in the surrounding area.
* AFFECTED AREA...Fire Weather Zone 652 West Portion of the
Olympic Mountains and Fire Weather Zone 661 East Portion of
the Olympic Mountains.
* THUNDERSTORMS...Scattered thunderstorms with LAL 3 are
expected to develop early as late morning and most likely
during the afternoon and evening hours.
* OUTFLOW WINDS...Gusty and erratic winds are possible in the
vicinity of any thunderstorms that develop.
* IMPACTS...Scattered lightning in dry fuels can cause multiple
fire starts. Thunderstorms can also bring sudden sharp wind
shifts on existing fires, causing rapid changes in a fire's
rate of spread and direction of spread. Thunderstorm outflow
winds can be a threat for several hours following the start of
a new lightning-caused fire. If a fire were to begin, air
quality may diminish in the surrounding area.
* AFFECTED AREA...Fire Weather Zone 659 West Slopes of the
Central Cascades Generally above 1500 Feet.
* THUNDERSTORMS...Scattered thunderstorms with LAL 3 are
expected to develop along and near the crest of the Cascades
as early as late morning and most likely during the afternoon
and evening hours.
* OUTFLOW WINDS...Gusty and erratic winds are possible in the
vicinity of any thunderstorms that develop.
* IMPACTS...Scattered lightning in dry fuels can cause multiple
fire starts. Thunderstorms can also bring sudden sharp wind
shifts on existing fires, causing rapid changes in a fire's
rate of spread and direction of spread. Thunderstorm outflow
winds can be a threat for several hours following the start of
a new lightning-caused fire. If a fire were to begin, air
quality may diminish in the surrounding area.
...ISOLATED THUNDERSTORMS WILL CONTINUE TONIGHT THROUGH
WEDNESDAY...
A low pressure system will continue to move north-northeastward
into the Pacific Northwest tonight through Wednesday night. This
system will provide enough moisture and elevated instability for
high-based showers and isolated thunderstorms to continue to
develop tonight through Wednesday.
* AFFECTED AREA...Fire Weather Zones 641 Lower Columbia Basin of
Oregon, 690 Kittitas Valley, 691 Lower Columbia Basin, 694
Yakama Alpine District and 695 East Washington South Central
Cascade Mountains.
* TIMING...11 PM through 5 PM.
* WINDS...North 5 to 10 mph.
* RELATIVE HUMIDITY...As low as 13 percent.
* TEMPERATURES...Up to 101.
* IMPACTS...Any new fire starts will exhibit extreme fire
behavior. Current fire on landscape will also exhibit extreme
fire behavior.
* HAINES...As high as 6.
* THUNDERSTORMS...Isolated to scattered thunderstorms are
possible.
* OUTFLOW WINDS...35 to 40 mph.
...ISOLATED THUNDERSTORMS WILL CONTINUE TONIGHT THROUGH
WEDNESDAY...
A low pressure system will continue to move north-northeastward
into the Pacific Northwest tonight through Wednesday night. This
system will provide enough moisture and elevated instability for
high-based showers and isolated thunderstorms to continue to
develop tonight through Wednesday.
* AFFECTED AREA...Fire Weather Zones 641 Lower Columbia Basin of
Oregon, 690 Kittitas Valley, 691 Lower Columbia Basin, 694
Yakama Alpine District and 695 East Washington South Central
Cascade Mountains.
* TIMING...11 PM through 5 PM.
* WINDS...North 5 to 10 mph.
* RELATIVE HUMIDITY...As low as 13 percent.
* TEMPERATURES...Up to 101.
* IMPACTS...Any new fire starts will exhibit extreme fire
behavior. Current fire on landscape will also exhibit extreme
fire behavior.
* HAINES...As high as 6.
* THUNDERSTORMS...Isolated to scattered thunderstorms are
possible.
* OUTFLOW WINDS...35 to 40 mph.
...ISOLATED THUNDERSTORMS WILL CONTINUE TONIGHT THROUGH
WEDNESDAY...
A low pressure system will continue to move north-northeastward
into the Pacific Northwest tonight through Wednesday night. This
system will provide enough moisture and elevated instability for
high-based showers and isolated thunderstorms to continue to
develop tonight through Wednesday.
* 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 and 640 Central Mountains of Oregon.
* IMPACTS...Any lightning strikes combined with hot and dry
conditions could cause new fire starts.
* THUNDERSTORMS...Isolated to scattered dry thunderstorms are
possible.
* OUTFLOW WINDS...35 to 40 mph.
* WHAT...Hot conditions during the day for the valleys. Highs 95 to
105. Overnight lows mainly 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 Thursday.
* IMPACTS...Heat will increase the risk of heat-related illnesses,
especially those without effective cooling or adequate hydration.
At 827 PM PDT, Doppler radar was tracking gusty showers along a line
extending from Warm Springs Reservation to 6 miles southwest of
Ashwood to Mitchell. Movement was north at 40 mph.
HAZARD...Wind gusts up to 40 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Madras, Fossil, Mitchell, Antelope, Shaniko, Ashwood, Warm Springs
Reservation, Kinzua, Warm Springs, Clarno, Service Creek, Gateway,
South Junction, Willowdale, and Simnasho.
At 813 PM PDT, Doppler radar was tracking a strong thunderstorm 12
miles southwest of Willamette Pass, or 19 miles southeast of
Oakridge. Another strong thunderstorm about 10 miles south of
Dorena. Both storms are moving north at 25 mph.
HAZARD...Wind gusts up to 40 mph and half inch hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation is
possible.
Locations impacted include...
Oakridge, Dorena, Hills Creek Reservoir, Westfir, Disston, Dorena
Reservoir, Hampton, and McCredie Springs.
In Oregon this includes State Highway 58 between mile markers 27 and
60.
* WHAT...High concentration of smoke particulates from wildfires in
Oregon.
* WHERE...northern Harney and northern Malheur Counties.
* WHEN....AIR QUALITY ALERT IN EFFECT UNTIL 2 PM PDT FRIDAY.
* IMPACTS...Smoke can irritate the eyes, lungs and worsen some
medical conditions. People most at risk to adverse health effects
include infants, young children, people with heart or lung
disease, older adults, and pregnant women.
* ADDITIONAL DETAILS...Smoke levels can change rapidly depending on
weather. Check current conditions on the Oregon Smoke Information
Blog, DEQ's Air Quality Index, or by downloading the free
OregonAIR app on your smartphone.
* WHAT...Dangerously hot conditions. Afternoon high temperatures of
95 to 105 degrees accompanied by overnight low temperatures in the
mid-60s to lower 70s. This will pose a major risk of heat-related
illness.
* WHERE...Kittitas Valley and Yakima Valley.
* WHEN...Until 10 PM PDT Thursday.
* IMPACTS...Extreme 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.