* WHAT...Hot conditions with temperatures up to 105 degrees
expected. This will pose a major risk of heat-related illness.
* WHERE...Lower Columbia Basin of Oregon and Washington, Foothills
of the Northern Blue Mountains of Oregon, Yakima Valley, and
Foothills of the Blue Mountains of Washington.
* WHEN...From 11 AM to 9 PM PDT Tuesday.
* IMPACTS...Hot temperatures may cause heat illnesses. 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.
...FIRE WEATHER WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH
WEDNESDAY EVENING FOR ABUNDANT LIGHTNING ON DRY FUELS FOR FIRE
WEATHER ZONES 624 AND 625...
The National Weather Service in Medford has issued a Red Flag
Warning, which is in effect from 2 PM to 11 PM PDT Tuesday. A
Fire Weather Watch has also been issued. This Fire Weather Watch
is in effect from Wednesday afternoon through Wednesday evening.
* AFFECTED AREA...For the Red Flag Warning...in Oregon...the
northern half of Fire weather zones 624 and 625. This includes
the Fremont and Winema National Forests north of the Sprague
River Valley and also the area north and west of Abert Rim. For
the Fire Weather Watch...in Oregon...eastern portions of fire
zone 624 and southern 625. This includes the Fremont National
Forest and areas from Silver Lake and Alkali Lake southward to
around Highway 140.
* THUNDERSTORMS...Isolated to scattered thunderstorms. Lightning
strikes outside of precipitation cores are possible, and cause
for concern for new fire starts.
* OUTFLOW WINDS...Gusts of 40 to 55 mph could travel outward up
to 25 miles from thunderstorm cores.
* DETAILED URL...View the hazard area in detail at
https://www.wrh.noaa.gov/map/?wfo=mfr
...FIRE WEATHER WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH
WEDNESDAY EVENING FOR ABUNDANT LIGHTNING ON DRY FUELS FOR FIRE
WEATHER ZONES 624 AND 625...
The National Weather Service in Medford has issued a Red Flag
Warning, which is in effect from 2 PM to 11 PM PDT Tuesday. A
Fire Weather Watch has also been issued. This Fire Weather Watch
is in effect from Wednesday afternoon through Wednesday evening.
* AFFECTED AREA...For the Red Flag Warning...in Oregon...the
northern half of Fire weather zones 624 and 625. This includes
the Fremont and Winema National Forests north of the Sprague
River Valley and also the area north and west of Abert Rim. For
the Fire Weather Watch...in Oregon...eastern portions of fire
zone 624 and southern 625. This includes the Fremont National
Forest and areas from Silver Lake and Alkali Lake southward to
around Highway 140.
* THUNDERSTORMS...Isolated to scattered thunderstorms. Lightning
strikes outside of precipitation cores are possible, and cause
for concern for new fire starts.
* OUTFLOW WINDS...Gusts of 40 to 55 mph could travel outward up
to 25 miles from thunderstorm cores.
* DETAILED URL...View the hazard area in detail at
https://www.wrh.noaa.gov/map/?wfo=mfr
* WHAT...Temperatures will largely exceed triple digits in the
Treasure Valley, with areas near Emmett and Ontario seeing high
temperatures up to 106F.
* WHERE...Treasure Valley Zones.
* WHEN...From noon MDT /11 AM PDT/ to 9 PM MDT /8 PM PDT/ Tuesday.
* IMPACTS...Hot temperatures may cause heat illnesses, especially
for the young, elderly, and animals.
* IMPACTS...Abundant lightning on dry fuels resulting in the
potential for numerous new fire starts. Any fires that develop
will likely spread rapidly.
* AFFECTED AREA...In Oregon...the northern half of Fire weather
zones 624 and 625. This includes the Fremont and Winema
National Forests north of the Sprague River Valley and also
the area north and west of Abert Rim.
* THUNDERSTORMS...Isolated to scattered thunderstorms.
Lightning strikes outside of precipitation cores are
possible, and cause for concern.
* OUTFLOW WINDS...Gusts of 40 to 55 mph could travel outward up
to 25 miles from thunderstorm cores.
* DETAILED URL...View the hazard area in detail at
https://www.wrh.noaa.gov/map/?wfo=mfr
* WHAT...Hot conditions with temperatures up to 105 degrees
expected. This will pose a major risk of heat-related illness.
* WHERE...Lower Columbia Basin of Oregon and Washington, Foothills
of the Northern Blue Mountains of Oregon, Yakima Valley, and
Foothills of the Blue Mountains of Washington.
* WHEN...From 11 AM to 9 PM PDT Tuesday.
* IMPACTS...Hot temperatures may cause heat illnesses. 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 with temperatures up to 105 degrees
expected. This will pose a major risk of heat-related illness.
* WHERE...Lower Columbia Basin of Oregon and Washington, Foothills
of the Northern Blue Mountains of Oregon, Yakima Valley, and
Foothills of the Blue Mountains of Washington.
* WHEN...From 11 AM to 9 PM PDT Tuesday.
* IMPACTS...Hot temperatures may cause heat illnesses. 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.
...HOT, DRY, AND WINDY TUESDAY AND WEDNESDAY...
.Hot and very dry conditions will be in place on Tuesday. Winds
will increase through the day with gusts 15 to 25 mph from the
East Slopes to the Palouse. Locally stronger winds will develop
late Tuesday afternoon and evening in the foothills of the
Cascades and across the Waterville Plateau producing gusts around
30 mph. A dry cold front will sweep through the region on
Wednesday delivering stronger winds region-wide. Humidity levels
increase on Wednesday but remain near critical levels.
The National Weather Service in Spokane has issued a Fire Weather
Watch for wind and low relative humidity, which is in effect from
Tuesday afternoon through Wednesday evening.
* Affected Area: Western Columbia Basin (Zone 707), Eastern
Columbia Basin -Palouse -Spokane Area (Zone 708) and Lower
Palouse -Snake River (Zone 709).
* Winds: Tuesday: West to southwest 10 to 20 mph with gusts to 25
mph. Wednesday: West to southwest 15 to 25 mph gusts around 35
mph.
* Relative Humidities: 10 to 15 percent on Tuesday. 18 to 25
percent on Wednesday.
* Impacts: Rapid fire spread is likely with any new fires.
...HOT, DRY, AND WINDY TUESDAY AND WEDNESDAY...
.Hot and very dry conditions will be in place on Tuesday. Winds
will increase through the day with gusts 15 to 25 mph from the
East Slopes to the Palouse. Locally stronger winds will develop
late Tuesday afternoon and evening in the foothills of the
Cascades and across the Waterville Plateau producing gusts around
30 mph. A dry cold front will sweep through the region on
Wednesday delivering stronger winds region-wide. Humidity levels
increase on Wednesday but remain near critical levels.
The National Weather Service in Spokane has issued a Fire Weather
Watch for wind and low relative humidity, which is in effect from
Tuesday afternoon through Wednesday evening.
* Affected Area: Okanogan Valley (Zone 703), Foothills of
Central Washington Cascades (Zone 705) and Waterville Plateau
(Zone 706).
* Winds: Tuesday: West 15 to 20 mph with gusts to 25 mph
increasing 30 mph in the evening. Wednesday: West 20 to 30 mph
with gusts up to 40 mph.
* Relative Humidities: 8 to 15 percent on Tuesday. 20 to 27
percent on Wednesday.
* Impacts: Rapid fire spread is likely with any new fires.
...DRY THUNDERSTORMS EXPECTED FOR TUESDAY AFTERNOON THROUGH
TUESDAY EVENING FOR ABUNDANT LIGHTNING FOR THE CENTRAL MOUNTAINS
OF OREGON AND SOUTHERN DESCHUTES NATIONAL FOREST...
.The ridge of high pressure is anticipated to break down Tuesday
afternoon with a dry cold front making its way into the region.
Ahead of the front, instability is expected to increase along with
an influx of mid-level moisture. This will lead to convection
along the central mountains of Oregon and through the southern
Deschutes National Forest Tuesday afternoon. Dry thunderstorms
will be isolated.
The National Weather Service in Pendleton has issued a Fire
Weather Watch for abundant lightning, which is in effect from
Tuesday afternoon through Tuesday evening.
* AFFECTED AREA...Fire Weather Zones 700 Central Mountains of
Oregon and 705 Southern Deschutes National Forest.
* TIMING...From Tuesday afternoon through Tuesday evening.
* IMPACTS...Any fire that develops will catch and spread
quickly. Outdoor burning is not recommended.
* THUNDERSTORMS...Storms are mostly expected to be dry with
rainfall amounts less than a tenth of an inch, though a few
storms could produce rainfall amounts in excess of a tenth of an
inch.
* OUTFLOW WINDS...As high as 45 mph.
The National Weather Service in Medford has issued a Fire Weather
Watch, which is in effect from Tuesday afternoon through Tuesday
evening.
* IMPACTS...Abundant lightning on dry fuels resulting in the
potential for numerous new fire starts. Any fires that develop
will likely spread rapidly.
* AFFECTED AREA...In Oregon...the northern half of Fire weather
zones 624 and 625. This includes the Fremont and Winema National
Forests north of the Sprague River Valley and also the area
north and west of Abert Rim.
* THUNDERSTORMS...Isolated to scattered thunderstorms. Lightning
strikes outside of precipitation cores are possible, and cause
for concern.
* OUTFLOW WINDS...Gusts of 40 to 55 mph could travel outward up to
25 miles from thunderstorm cores.
* DETAILED URL...View the hazard area in detail at
https://www.wrh.noaa.gov/map/?wfo=mfr
At 649 PM PDT, Doppler radar was tracking a strong thunderstorm 7
miles west of Drewsey, or 31 miles northeast of Burns, moving east at
20 mph.
HAZARD...Wind gusts up to 40 mph and pea size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Areas of blowing dust possible. Minor
damage to outdoor objects is possible.
This strong thunderstorm will be near...
Drewsey around 700 PM PDT.
Drinkwater Pass around 720 PM PDT.
At 627 PM PDT, Doppler radar was tracking a strong thunderstorm over
Lawen, or 17 miles southeast of Burns, moving northeast at 35 mph.
HAZARD...Wind gusts up to 40 mph and pea size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Areas of blowing dust possible. Minor
damage to outdoor objects is possible.
This strong thunderstorm will be near...
Coleman Mountain around 700 PM PDT.
At 623 PM PDT, Doppler radar was tracking a strong thunderstorm 8
miles northwest of Mount Vernon, or 14 miles northwest of John Day,
moving east at 10 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...
John Day, Canyon City, Mount Vernon, and Fox.
* WHAT...Flash flooding caused by excessive rainfall continues to be
possible.
* WHERE...Portions of northeast and southeast Oregon, including the
following counties, in northeast Oregon, Baker County. In
southeast Oregon, Harney County and Malheur County.
* WHEN...Until 8 PM PDT /9 PM MDT/ this evening.
* IMPACTS...Heavy rainfall could trigger flash flooding or debris
flows in and near recent wildfire burn scars.
* ADDITIONAL DETAILS...
- National Weather Service Meteorologists are forecasting heavy
rainfall over the burn scar, which may lead to flash flooding
and debris flows.
- https://www.weather.gov/safety/flood
At 341 PM PDT, Doppler radar was tracking a cluster of strong
thunderstorms near Sheep Rock, or 38 miles southeast of John Day,
moving northeast at 40 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. Areas of blowing dust reducing
visibilities. Minor damage to outdoor objects is possible.
This strong thunderstorm will be near...
Ironside Mountain around 450 PM MDT.
Ironside and Eldorado Pass around 500 PM MDT.
Baldy Mountain around 510 PM MDT.
At 334 PM PDT, Doppler radar was tracking a strong thunderstorm near
Swamp Creek Buttes, or 40 miles northwest of Rome, moving east at 30
mph.
HAZARD...Wind gusts up to 50 mph and half inch hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Areas of blowing dust reducing
visibilities. Minor damage to outdoor objects is possible.
This strong thunderstorm will be near...
Turnbull Mountain around 440 PM MDT.
Copeland Butte around 450 PM MDT.
Knottingham Butte around 510 PM MDT.
* WHAT...There is a threat of flash flooding caused by excessive
rainfall from thunderstorms through this evening.
* WHERE...Southeast Oregon.
* WHEN...Until 8 PM PDT /9 PM MDT/ this evening.
* IMPACTS...Heavy rainfall could trigger flash flooding or debris
flows in and near recent wildfire burn scars.
* ADDITIONAL DETAILS...
- There is a risk for heavy rainfall over the burn scar, which
may lead to flash flooding and debris flows.
- https://www.weather.gov/safety/flood