At 519 PM PDT, trained weather spotters reported a strong
thunderstorm near Bend, moving northeast at 20 mph.
HAZARD...Wind gusts up to 40 mph and half inch hail.
SOURCE...Trained weather spotters.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation is
possible.
Locations impacted include...
Bend, Redmond, Tumalo, and Powell Butte.
...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 through the evening.
* AFFECTED AREA...Fire Weather Zones 642 Southern Blue and
Strawberry Mountains and 644 Central Blue Mountains.
* TIMING...Until 11 PM this evening.
* 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 through the evening.
* AFFECTED AREA...Fire Weather Zones 611 Deschutes National
Forest -minus Sisters Ranger District and 640 Central
Mountains of Oregon.
* TIMING...Unitl 10 PM this evening.
* 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.
* WHAT...High temperatures of 95 to 100 degrees this afternoon.
* WHERE...Lake County and eastern Klamath County, Central Siskiyou
County, South Central Siskiyou County, North Central and Southeast
Siskiyou County, Northeast Siskiyou and Northwest Modoc Counties,
Modoc County, and Klamath Basin.
* WHEN...Until 11 PM PDT this evening.
* IMPACTS...Persistent heat will limit ability to cool down.
Additionally, smoke combined with hot temperatures may heighten
the potential for heat related illnesses due to limiting the
ability to open windows for cooler air.
...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.
* 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.
* 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.
...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.
* 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.
* ADDITIONAL DETAILS...Thunderstorm activity is mainly expected
this afternoon and evening.
* DETAILED URL...View the hazard area in detail at
https://www.wrh.noaa.gov/map/?wfo=mfr
* AFFECTED AREA...In Oregon, Fire Weather Zone 686 Northern
Oregon Cascade Foothills and Fire Weather Zone 688 Mt. Hood
National Forest Region. In Washington, Fire Weather Zone 634
Southern Gifford Pinchot National Forest, Fire Weather Zone
635 Mt. Adams Ranger District of the Gifford-Pinchot National
Forest and Fire Weather Zone 636 Western Columbia River Gorge
in Oregon and Washington.
* 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.
* OUTFLOW WINDS...Brief gusts to 35 mph possible.
* AFFECTED AREA...In Oregon, 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...Frequent lightning and critically dry fuels may
result in numerous fire starts. Thunderstorm outflow winds may
result in erratic fire spread.
* OUTFLOW WINDS...Brief gusts to 35 mph possible.
