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...Hot conditions. Afternoon high temperatures of 95 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 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. Afternoon high temperatures of 95 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...John Day Basin.
* WHEN...Until 10 PM PDT Wednesday.
* 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. Afternoon high temperatures of 95 to 105
degrees accompanied by overnight low temperatures in the lower 60s
to lower 70s. This will pose a moderate to locally major risk of
heat-related illness.
* WHERE...In Oregon, Foothills of the Southern Blue Mountains of
Oregon and North Central Oregon. In Washington, Simcoe Highlands.
* WHEN...Until 10 PM PDT Wednesday.
* 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. Afternoon high temperatures of 95 to 105
degrees accompanied by overnight low temperatures in the lower 60s
to mid-70s. This will pose a moderate to locally major risk of
heat-related illness.
* WHERE...Eastern Columbia River Gorge of Oregon and Washington,
Foothills of the Northern Blue Mountains of Oregon, and Foothills
of the Blue Mountains of Washington.
* WHEN...Until 10 PM PDT Wednesday.
* 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 AND DRY, UNSTABLE CONDITIONS THIS
AFTERNOON, OVERNIGHT, AND WEDNESDAY...
A low pressure system will move north-northeastward into the
Pacific Northwest late today through Wednesday night. This system
will provide enough moisture and elevated instability for high-
based showers and isolated thunderstorms to develop late this
afternoon, overnight, and 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 AND DRY, UNSTABLE CONDITIONS THIS
AFTERNOON, OVERNIGHT, AND WEDNESDAY...
A low pressure system will move north-northeastward into the
Pacific Northwest late today through Wednesday night. This system
will provide enough moisture and elevated instability for high-
based showers and isolated thunderstorms to develop late this
afternoon, overnight, and 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.
...ISOLATED THUNDERSTORMS AND DRY, UNSTABLE CONDITIONS THIS
AFTERNOON, OVERNIGHT, AND WEDNESDAY...
A low pressure system will move north-northeastward into the
Pacific Northwest late today through Wednesday night. This system
will provide enough moisture and elevated instability for high-
based showers and isolated thunderstorms to develop late this
afternoon, overnight, and Wednesday.
* AFFECTED AREA...Fire Weather Zone 642 Southern Blue and
Strawberry Mountains.
* TIMING...Until 11 PM.
* WINDS...South 5 mph or less.
* RELATIVE HUMIDITY...As low as 11 percent.
* TEMPERATURES...Up to 93.
* 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.
* WHAT...Daytime temperatures between 95 to 100 expected. Overnight
lows between 65 to 70 will limit chances to recover from the heat
Tuesday night.
* WHERE...In Oregon, Central Columbia River Gorge I-84 Corridor,
East Portland Metro, Inner Portland Metro, and West Columbia River
Gorge I-84 Corridor. In Washington, Central Columbia River Gorge
SR 14 Corridor, East Clark County Lowlands, Inner Vancouver Metro,
and West Columbia River Gorge SR 14 Corridor.
* WHEN...Until 8 AM PDT Wednesday.
* IMPACTS...Hot temperatures may cause heat illnesses.
...ISOLATED THUNDERSTORMS AND DRY, UNSTABLE CONDITIONS THIS
AFTERNOON, OVERNIGHT, AND WEDNESDAY...
A low pressure system will move north-northeastward into the
Pacific Northwest late today through Wednesday night. This system
will provide enough moisture and elevated instability for high-
based showers and isolated thunderstorms to develop late this
afternoon, overnight, and 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...2 PM through 11 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 AND DRY, UNSTABLE CONDITIONS THIS
AFTERNOON, OVERNIGHT, AND WEDNESDAY...
A low pressure system will move north-northeastward into the
Pacific Northwest late today through Wednesday night. This system
will provide enough moisture and elevated instability for high-
based showers and isolated thunderstorms to develop late this
afternoon, overnight, and 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.
...ISOLATED THUNDERSTORMS AND DRY, UNSTABLE CONDITIONS THIS
AFTERNOON, OVERNIGHT, AND WEDNESDAY...
A low pressure system will move north-northeastward into the
Pacific Northwest late today through Wednesday night. This system
will provide enough moisture and elevated instability for high-
based showers and isolated thunderstorms to develop late this
afternoon, overnight, and Wednesday.
* AFFECTED AREA...Fire Weather Zone 642 Southern Blue and
Strawberry Mountains.
* TIMING...2 PM through 11 PM.
* WINDS...South 5 mph or less.
* RELATIVE HUMIDITY...As low as 11 percent.
* TEMPERATURES...Up to 93.
* 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.
...SCATTERED THUNDERSTORMS THROUGH THIS EVENING FOR ZONE 636, AND
WEDNESDAY AFTERNOON AND EARLY EVENING FOR ZONE 426...
* Thunderstorms...Scattered coverage with little to no rainfall
expected.
* Outflow Winds...Up to 60 mph possible.
* Timing...Until 11 PM PDT this evening.
The National Weather Service in Portland has issued a Red Flag
Warning for thunderstorms, which is in effect from 5 PM this
afternoon to 8 AM PDT Wednesday. The Fire Weather Watch is no
longer in effect.
* AFFECTED AREA...In Oregon, Fire Weather Zone 684 Northern and
Central Willamette Valley, Fire Weather Zone 686 Northern
Oregon Cascade Foothills and 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...There is a 10% chance for wind gusts in excess
of 50 mph from the strongest storms through this evening.
* IMPACTS...Frequent lightning and critically dry fuels may
result in numerous fire starts. Thunderstorm outflow winds may
result in erratic fire spread.
The National Weather Service in Portland has issued a Red Flag
Warning for thunderstorms, which is in effect until 5 AM PDT
Wednesday. The Fire Weather Watch is no longer in effect.
* AFFECTED AREA...In Oregon, Fire Weather Zone 685 Southern
Willamette Valley, Fire Weather Zone 687 Central Oregon
Cascade Foothills, Fire Weather Zone 689 Northern Willamette
National Forest and Fire Weather Zone 690 Southern Willamette
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.
* OUTFLOW WINDS...There is a 10% chance for wind gusts in excess
of 50 mph from the strongest storms through this evening.
* IMPACTS...Frequent lightning and critically dry fuels may
result in numerous fire starts. Thunderstorm outflow winds may
result in erratic fire spread.
* 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.
* WHAT...High concentration of smoke particulates from wildfires in
Oregon and northern California.
* WHERE...Baker, Harney, and Malheur Counties.
* WHEN...AIR QUALITY ALERT IN EFFECT UNTIL NOON PDT WEDNESDAY.
* 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.
The National Weather Service in Medford has issued a Red Flag
Warning, which is in effect from 2 PM this afternoon to 11 PM PDT
this evening.
* AFFECTED AREA...Douglas county east of I-5. Also, northern and
eastern portions of Modoc County.
* THUNDERSTORMS...Isolated to scattered thunderstorms (10 to 30
percent chance) .
* OUTFLOW WINDS...Gusts 40 to 50 mph. These outflow winds can
travel up to 50 miles away from the thunderstorm that caused it.
* DETAILED URL...View the hazard area in detail at
https://www.wrh.noaa.gov/map/?wfo=mfr
* AFFECTED AREA...Significant portions of fire weather zones
617,623, 624, and 625, roughly along and north of a line from
Lakeview to Crater Lake.
* THUNDERSTORMS...Isolated to scattered thunderstorms are
possible Tuesday. Lightning strikes outside of precipitation
cores are possible and cause for concern.
* OUTFLOW WINDS...Gusts up to 40 mph. These outflow winds can
travel up to 50 miles away from the thunderstorm that caused
it.
* DETAILED URL...View the hazard area in detail at
https://www.wrh.noaa.gov/map/?wfo=mfr
