...ABUNDANT LIGHTNING THIS AFTERNOON AND EVENING...
...ABUNDANT LIGHTNING POSSIBLE AGAIN MONDAY...
A Red Flag Warning remains in effect for lightning this afternoon
and evening. A Fire Weather Watch for lightning is in effect from
Monday afternoon through Monday evening.
* Thunderstorms...Scattered thunderstorms and abundant lightning
this afternoon and evening. Best chance is in all of Burns and
southern and western Vale BLM. Storms will not be as dry as in
recent days, with cores most likely having wetting rains.
However, lightning outside of cores will pose significant
concerns. Isolated to scattered thunderstorms are expected
again Monday afternoon and evening.
* Outflow Winds...Up to 55 mph.
* Timing...For the Red Flag Warning, until midnight MDT /11 PM
PDT/ tonight. For the Fire Weather Watch, from Monday
afternoon through Monday evening.
...ABUNDANT LIGHTNING THIS AFTERNOON AND EVENING...
...ABUNDANT LIGHTNING POSSIBLE AGAIN MONDAY...
A Red Flag Warning remains in effect for lightning this afternoon
and evening. A Fire Weather Watch for lightning is in effect from
Monday afternoon through Monday evening.
* Thunderstorms...Scattered thunderstorms and abundant lightning
this afternoon and evening. Best chance is in all of Burns and
southern and western Vale BLM. Storms will not be as dry as in
recent days, with cores most likely having wetting rains.
However, lightning outside of cores will pose significant
concerns. Isolated to scattered thunderstorms are expected
again Monday afternoon and evening.
* Outflow Winds...Up to 55 mph.
* Timing...For the Red Flag Warning, until midnight MDT /11 PM
PDT/ tonight. For the Fire Weather Watch, from Monday
afternoon through Monday evening.
* WHAT...Dangerously hot conditions with temperatures 104 to 108
at low elevations.
* WHERE...Portions of southwest and west central Idaho and
southeast Oregon.
* WHEN...Until 9 PM MDT /8 PM PDT/ Wednesday.
* IMPACTS...Extreme heat will significantly increase the
potential for heat related illnesses, particularly for those
working or participating in outdoor activities.
* WHAT...Temperatures 100 to 103 in lowest elevations.
* WHERE...Portions of south central and southwest Idaho and
northeast and southeast Oregon.
* WHEN...Until 9 PM MDT /8 PM PDT/ Wednesday.
* IMPACTS...Hot temperatures may cause heat illnesses to occur.
* Affected Area: Fire Weather Zone 696 East Washington Central
Cascades (Zone 696), Fire Weather Zone 697 East Portion of
North Cascades National Park/Lake Chelan National Recreation
Area (Zone 697), Fire Weather Zone 698 East Washington North
Cascades (Zone 698), Fire Weather Zone 704 Methow Valley (Zone
704) and Fire Weather Zone 705 Foothills of Central Washington
Cascades (Zone 705).
* Winds: East to southeast 5 to 10 mph through Sunday afternoon.
Wind shift to the west or northwest 10 to 15 mph Sunday
afternoon into the evening. Localized wind gusts of 30 mph or
more with showers and thunderstorms into Sunday evening. Winds
significantly increase late Monday afternoon with the dry cold
front passage to northwest 15 to 25 mph with gusts around 35
mph.
* Relative Humidities: 7 to 16 percent in the valleys and 16 to 25
percent over the higher terrain.
* Temperatures: 95 to 108 in the valleys. 80s and 90s in the
mountains.
* Impacts: Unstable conditions could lead to plume dominated fires
Sunday. Isolated thunderstorms will bring the risk for new fire
starts and gusty and erratic outflow winds. Rapid fire spread
with any new or existing fires due to gusty winds Monday
afternoon and evening.
* Affected Area: Fire Weather Zone 703 Okanogan Valley (Zone
703).
* Winds: South 15 to 20 mph with gusts up to 30 mph.
* Relative Humidities: 8 to 19 percent.
* Temperatures: Up to 104.
* Lightning: There is 10% chance for thunderstorms Monday
afternoon and evening. Gusty outflow winds up to 35 mph
possible.
* Impacts: Rapid fire spread with any new or existing fires due to
gusty winds. Isolated thunderstorms will bring the risk for new
fire starts and gusty and erratic outflow winds.
* IMPACTS...Given the prolonged stretch of very hot and very dry
conditions, lightning efficiency will be high to very high for
fire starts. Additionally, gusty outflow winds will allow for
new and existing fires to grow rapidly out of control.
* AFFECTED AREA...All of Fire weather zone 625.
* THUNDERSTORMS...Isolated to scattered thunderstorms with very
little to no precipitation are expected this afternoon and
evening. 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
* IMPACTS...Given the prolonged stretch of very hot and very dry
conditions, lightning efficiency will be high to very high for
fire starts. Additionally, gusty outflow winds will allow for
new and existing fires to grow rapidly out of control.
* AFFECTED AREA...Eastern portions of Fire Weather Zone 624,
mainly over the eastern portions of the Fremont-Winema
National Forest along the Klamath/Lake County border and
areas eastward.
* THUNDERSTORMS...Isolated to scattered thunderstorms with very
little to no precipitation are expected this afternoon and
evening. 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
Corrected to add Zone 636 to list of Oregon zones.
* AFFECTED AREA...
In Oregon,
* Fire Weather Zone 686 - Northern Oregon Cascade Foothills.
* Fire Weather Zone 688 - Mt. Hood National Forest Region.
* Fire Weather Zone 636 - Western Columbia River Gorge.
In Washington,
* Fire Weather Zone 634 - Southern Gifford Pinchot NF.
* Fire Weather Zone 635 - Mt. Adams Ranger District.
* Fire Weather Zone 636 - Western Columbia River Gorge.
* THUNDERSTORMS...Isolated to scattered thunderstorms.
* IMPACTS...Frequent lightning and critically dry fuels may
result in numerous fire starts. Thunderstorm outflow winds may
result in erratic fire spread.
Corrected to add Zone 636 to list of Oregon zones.
* AFFECTED AREA...
In Oregon,
* Fire Weather Zone 686 - Northern Oregon Cascade Foothills.
* Fire Weather Zone 688 - Mt. Hood National Forest Region.
* Fire Weather Zone 636 - Western Columbia River Gorge.
In Washington,
* Fire Weather Zone 634 - Southern Gifford Pinchot NF.
* Fire Weather Zone 635 - Mt. Adams Ranger District.
* Fire Weather Zone 636 - Western Columbia River Gorge.
* THUNDERSTORMS...Isolated to scattered thunderstorms.
* 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 temperatures of 100 to 110
degrees. This will pose a major risk of heat-related illness.
* WHERE...Portions of central, north central, and northeast Oregon
and central, south central, and southeast Washington.
* WHEN...Until 10 PM PDT Monday.
* 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 with temperatures of 95 to 105 degrees. This
will pose a moderate to major risk of heat-related illness.
* WHERE...In Oregon, Central Oregon, Ochoco-John Day Highlands, and
North Central Oregon. In Washington, Lower Slopes of the Eastern
Washington Cascades Crest.
* WHEN...Until 8 PM PDT Monday.
* 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 with temperatures of 100 to 110
degrees. This will pose a major risk of heat-related illness.
* WHERE...Portions of central, north central, and northeast Oregon
and central, south central, and southeast Washington.
* WHEN...Until 10 PM PDT Monday.
* 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 with temperatures of 95 to 105 degrees. This
will pose a moderate to major risk of heat-related illness.
* WHERE...In Oregon, Central Oregon, Ochoco-John Day Highlands, and
North Central Oregon. In Washington, Lower Slopes of the Eastern
Washington Cascades Crest.
* WHEN...Until 8 PM PDT Monday.
* 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.
...ABUNDANT LIGHTNING TODAY...
* Thunderstorms...Scattered thunderstorms and abundant lightning
this afternoon and evening. Best chance is in all of Burns and
southern and western Vale BLM. Storms will not be as dry as in
recent days, with cores most likely having wetting rains.
However, lightning outside of cores will pose significant
concerns.
* Outflow Winds...Up to 55 mph.
* Timing...From noon MDT /11 AM PDT/ today to midnight MDT /11
PM PDT/ tonight.
* WHAT...Hot temperatures. Valley high temperatures 98 to 105. Highs
in the mountains in the 80s and 90s.
* WHERE...Holden Village, Stevens Pass, and Stehekin.
* WHEN...Until 8 PM PDT Monday.
* IMPACTS...Heat will increase the risk of heat-related illnesses,
especially those without effective cooling or adequate hydration.
* WHAT...High temperatures 100 to 110 through Monday. Lows in the
mid 60s to mid 70s.
* WHERE...Portions of North and North Central Idaho and Central,
East Central, North Central, Northeast, and Southeast Washington.
* WHEN...Until 8 PM PDT Monday.
* IMPACTS...Heat will increase the risk of heat-related illnesses,
especially those without effective cooling or adequate hydration.
* Affected Area: Fire Weather Zone 696 East Washington Central
Cascades (Zone 696), Fire Weather Zone 697 East Portion of
North Cascades National Park/Lake Chelan National Recreation
Area (Zone 697), Fire Weather Zone 698 East Washington North
Cascades (Zone 698), Fire Weather Zone 704 Methow Valley (Zone
704) and Fire Weather Zone 705 Foothills of Central Washington
Cascades (Zone 705).
* Winds: East to southeast 5 to 10 mph through mid afternoon.
Wind shift to the west or northwest 10 to 15 mph late afternoon
into the evening. Localized wind gusts of 30 mph or more with
showers and thunderstorms mid Sunday afternoon into Sunday
evening.
* Relative Humidities: 7 to 16 percent in the valleys and 16 to
24 percent over the higher terrain.
* Temperatures: 100 to 108 in the valleys. Upper 80s and 90s in
the mountains.
* Lightning: There is 10 to 15% chance for thunderstorms late
Sunday afternoon into Sunday night. Gusty outflow winds up to 30
mph possible.
* Impacts: Unstable conditions could lead to plume dominated
fires. Isolated thunderstorms will bring the risk for new fire
starts and gusty and erratic outflow winds.
...VERY HOT, DRY, AND UNSTABLE CONDITIONS CONTINUE TODAY...
A strong ridge of high pressure will remain over the area
producing hot dry and unstable conditions especially to eastern
portions of central Oregon. A weak weather disturbance will move
up the coast helping to trigger isolated to scattered
thunderstorms in central Oregon today through evening.
* AFFECTED AREA...Fire Weather Zones 642 Southern Blue and
Strawberry Mountains and 644 Central Blue Mountains.
* TIMING...Until Sunday 11 PM.
* RELATIVE HUMIDITY...As low as 10 percent.
* TEMPERATURES...Up to 100.
* IMPACTS...Current fires could exhibit extreme fire behavior.
* HAINES...As high as 5.
...VERY HOT, DRY, AND UNSTABLE CONDITIONS CONTINUE TODAY...
A strong ridge of high pressure will remain over the area
producing hot dry and unstable conditions especially to eastern
portions of central Oregon. A weak weather disturbance will move
up the coast helping to trigger isolated to scattered
thunderstorms in central Oregon today through evening.
* AFFECTED AREA...Fire Weather Zones 611 Deschutes National
Forest -minus Sisters Ranger District and 640 Central
Mountains of Oregon.
* TIMING...Noon to 10 PM Sunday.
* RELATIVE HUMIDITY...As low as 10 percent.
* TEMPERATURES...Up to 100.
* THUNDERSTORMS...Isolated to widely scattered. 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.