* WHAT...Hot conditions. Afternoon high temperatures of 96 to 105
degrees accompanied by overnight low temperatures in the lower 60s
to lower 70s. This will pose a moderate to major risk of
heat-related illness.
* WHERE...Lower Columbia Basin of Oregon and Washington.
* 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.
At 505 PM PDT, Doppler radar was tracking a strong thunderstorm near
Boardman, moving northeast at 50 mph.
HAZARD...Wind gusts up to 50 mph and pea size 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...
Boardman, Irrigon, and Paterson.
* WHAT...Dangerously hot conditions with temperatures up to 108
possible at low elevations. Hottest days Sunday and Monday.
* WHERE...Baker County.
* WHEN...From Saturday morning through Tuesday evening.
* IMPACTS...Extreme heat will significantly increase the
potential for heat related illnesses, particularly for those
working or participating in outdoor activities.
* ADDITIONAL DETAILS...
* WHAT...For the Excessive Heat Warning, dangerously hot
conditions with temperatures up to 105 expected. For the
Excessive Heat Watch, dangerously hot conditions with
temperatures up to 110 possible. Hottest days Sunday and
Monday.
* WHERE...Portions of southwest and west central Idaho and
southeast Oregon.
* WHEN...For the Excessive Heat Warning, from noon Thursday to
noon MDT Saturday. For the Excessive Heat Watch, from Saturday
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.
* WHAT...Dangerously hot conditions with high temperatures up to
105 possible at low elevations. Hottest days Sunday and Monday.
* WHERE...Portions of south central, southwest and west central
Idaho and southeast Oregon.
* WHEN...From Saturday 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.
* WHAT...For the Excessive Heat Warning, dangerously hot
conditions with temperatures up to 105 expected. For the
Excessive Heat Watch, dangerously hot conditions with
temperatures up to 110 possible. Hottest days Sunday and
Monday.
* WHERE...Portions of southwest and west central Idaho and
southeast Oregon.
* WHEN...For the Excessive Heat Warning, from noon Thursday to
noon MDT Saturday. For the Excessive Heat Watch, from Saturday
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.
...ISOLATED THUNDERSTORM THREAT SHIFTS NORTH FOR THE REST OF THE
DAY...
A low pressure system remains situated over the forecast area,
creating a wide swath of showers stretching from the Columbia
River Gorge all the way through the eastern mountains of Oregon as
of this morning. The current forecast calls for a resurgence of
thunderstorm activity once daytime heating initiates and
instability builds, primarily for the Oregon Columbia Basin
northward. The storm threat is expected to last into the evening
hours. Dry weather is expected for the previously warned zones
across central Oregon for the rest of the day.
* 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.
* THUNDERSTORMS...Isolated thunderstorms. Lightning activity
level of 2 to 3.
* OUTFLOW WINDS...35 to 45 mph. Thunderstorm outflow winds may
result in erratic fire spread.
* IMPACTS...Any lightning strikes combined with hot and dry
conditions could cause new fire starts.
* AFFECTED AREA...In Oregon, Fire Weather Zone 688 Mt. Hood
National Forest Region.
* THUNDERSTORMS...Isolated to scattered thunderstorms.
* 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.
...ISOLATED THUNDERSTORM THREAT CONTINUES THROUGH THE EVENING...
* 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.
* THUNDERSTORMS...Isolated thunderstorms. Lightning activity
level of 2.
* OUTFLOW WINDS...35 to 45 mph. Thunderstorm outflow winds may
result in erratic fire spread.
* IMPACTS...Any lightning strikes combined with hot and dry
conditions could cause new fire starts.
...ISOLATED THUNDERSTORM THREAT CONTINUES THROUGH THE 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
and 640 Central Mountains of Oregon.
* THUNDERSTORMS...Isolated thunderstorms. Lightning activity
level of 2.
* OUTFLOW WINDS...35 to 45 mph. Thunderstorm outflow winds may
result in erratic fire spread.
* IMPACTS...Any lightning strikes combined with hot and dry
conditions could cause new fire starts.
* 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 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...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.
...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.
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.
