* IMPACTS...Abundant lightning on dry fuels resulting in the
potential for numerous new fire starts.
* AFFECTED AREA...In California, Fire weather zones 280, 281,
284 and 285. In oregon, Fire weather zones 617, 621, 623, 624
and 625.
* THUNDERSTORMS...Scattered thunderstorms with abundant
lightning possible. Storms may produce little or no rain, and
lightning strikes outside of precipitation cores are
possible, and may cause many new fire starts.
* OUTFLOW WINDS...Gusts of 35 to 50 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
* AFFECTED AREA...In Oregon, Fire Weather Zone 689 Northern
Willamette National Forest and Fire Weather Zone 690 Southern
Willamette National Forest.
* THUNDERSTORMS...A 15 to 25% chance of thunderstorms.
* OUTFLOW WINDS...Instantaneous gusts as high as 40 mph. Gusts at
these speeds can be observed tens of miles away from the core of
the thunderstorm.
* DRY AND UNSTABLE...Unstable conditions with elevated mixing
heights may promote pyroconvective activity.
* IMPACTS...Conditions may be favorable for rapid fire spread
which may threaten life and property. Thunderstorm outflow
winds may result in unanticipated erratic fire spread. High
instability may result in fire growth. Frequent lightning and
critically dry fuels may result in fire starts.
* WHAT...Afternoon high temperatures in the mid to upper 90s and
overnight low temperatures in the mid 60s to low 70s expected.
* WHERE...Western and Central Columbia River Gorge and the Hood
River Valley.
* WHEN...From noon Tuesday to 9 PM PDT Wednesday.
* IMPACTS...Hot temperatures may cause heat illnesses.
Oregon Department of Environmental Quality has issued an Air
Quality Advisory...in effect until 11 AM PDT Tuesday.
The advisory is in effect for all of Klamath County, including
Crater Lake, Chemult, Crescent, Chiloquin, Klamath Falls, Sprague
River, Beatty, and Bly.
Wildfires burning in the region combined with forecast conditions
will cause air quality levels to fluctuate and could be at unhealthy
levels.
Smoke levels can change rapidly depending on the weather. People at
risk include infants and young children, people with heart or lung
disease, older adults and pregnant people.
People can take the following precautions to protect their health:
- Follow local burn restrictions to prevent deteriorating air quality.
- Avoid strenuous outdoor activity during periods of poor air quality.
- People with heart or lung problems and young children are
especially vulnerable. These people should stay indoors while smoke
levels are high.
- Use certified High Efficiency Particulate Air (HEPA) filters in
indoor heating, ventilation, cooling and air purification systems.
- Avoid using wood-burning stoves and other sources of indoor smoke
if possible.
For additional information...please visit the web site at
https://oregonsmoke.org
The National Weather Service in Portland has issued a Fire
Weather Watch for thunderstorms and unstable conditions, which is
in effect from 2 PM to 8 PM PDT Tuesday.
* AFFECTED AREA...In Oregon, Fire Weather Zone 689 Northern
Willamette National Forest and Fire Weather Zone 690 Southern
Willamette National Forest.
* THUNDERSTORMS...Isolated to scattered thunderstorms. 10-20%
chance of thunderstorms.
* OUTFLOW WINDS...Instantaneous gusts as high as 40 mph. Gusts at
these speeds can be observed tens of miles away from the core of
the thunderstorm.
* DRY AND UNSTABLE...Unstable conditions with elevated mixing
heights may promote pyroconvective activity.
* IMPACTS...Conditions may be favorable for rapid fire spread
which may threaten life and property. Thunderstorm outflow winds
may result in unanticipated erratic fire spread. High
instability may result in fire growth. Frequent lightning and
critically dry fuels may result in fire starts.
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.
* AFFECTED AREA...In California, Fire weather zones 280, 281, 284
and 285. In oregon, Fire weather zones 617, 621, 623, 624 and
625.
* THUNDERSTORMS...Scattered thunderstorms with abundant lightning
possible. Storms may produce little or no rain, and lightning
strikes outside of precipitation cores are possible, and may
cause many new fire starts.
* OUTFLOW WINDS...Gusts of 35 to 50 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...Dangerously hot conditions with temperatures up to 102
degrees possible. This will pose a major risk of heat-related
illness.
* WHERE...Portions of north central and northeast Oregon and
central, south central, and southeast Washington.
* WHEN...From Tuesday morning through Thursday evening.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events. 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.
* ADDITIONAL DETAILS...Daily high temperature records are at risk
for many cities in the watch area Tuesday through Thursday.
Oregon Department of Environmental Quality has issued an Air
Quality Advisory...in effect until 11 AM PDT Tuesday.
The advisory is in effect for all of Klamath County, including
Crater Lake, Chemult, Crescent, Chiloquin, Klamath Falls, Sprague
River, Beatty, and Bly.
Wildfires burning in the region combined with forecast conditions
will cause air quality levels to fluctuate and could be at unhealthy
levels.
Smoke levels can change rapidly depending on the weather. People at
risk include infants and young children, people with heart or lung
disease, older adults and pregnant people.
People can take the following precautions to protect their health:
- Follow local burn restrictions to prevent deteriorating air quality.
- Avoid strenuous outdoor activity during periods of poor air quality.
- People with heart or lung problems and young children are
especially vulnerable. These people should stay indoors while smoke
levels are high.
- Use certified High Efficiency Particulate Air (HEPA) filters in
indoor heating, ventilation, cooling and air purification systems.
- Avoid using wood-burning stoves and other sources of indoor smoke
if possible.
For additional information...please visit the web site at
https://oregonsmoke.org
At 522 PM PDT, Doppler radar was tracking a strong thunderstorm 16
miles east of Hardman, or 20 miles southeast of Heppner. This
thunderstorm was nearly stationary.
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.
This storm will remain over mainly rural areas of southeastern Morrow
County.
At 517 PM PDT, Doppler radar was tracking a strong thunderstorm 11
miles north of Monument, or 27 miles south of Heppner. This
thunderstorm was nearly stationary.
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.
This storm will remain over mainly rural areas of northern Grant and
southern Morrow counties.
FFWPDT
The National Weather Service in Pendleton has issued a
* Flash Flood Warning for...
The Battle Mountain Complex burn scar in...
Northern Grant County in central Oregon...
Southeastern Morrow County in northeastern Oregon...
Southwestern Umatilla County in northeastern Oregon...
* Until 630 PM PDT.
* At 508 PM PDT, Doppler radar indicated thunderstorms producing
heavy rain over the Battle Mountain Complex burn scar. Between 0.5
and 1 inch of rain has fallen. Additional rainfall amounts up to
0.5 inches are possible in the warned area. Flash flooding is
ongoing or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms in and around
the Battle Mountain Complex Burn Scar.
SOURCE...Radar.
IMPACT...Flooding of areas in and around the Battle Mountain
Complex Burn Scar.
* Some locations that will experience flash flooding include...
mainly rural areas of Northern Grant, Southeastern Morrow and
Southwestern Umatilla Counties
At 156 PM PDT, Doppler radar was tracking a strong thunderstorm 19
miles southwest of Ironside, or 36 miles southeast of John Day,
moving east at 5 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.
This storm will remain over mainly rural areas of southeast Grant
County.
Oregon Department of Environmental Quality has issued an Air Quality
Advisory.. until 11 AM PDT Tuesday.
A Smoke Air Quality Advisory has been issued. Wildfires burning in
the region combined with forecasted conditions will cause air
quality to reach unhealthy levels.
Pollutants in smoke can cause burning eyes, runny nose, aggravate
heart and lung diseases, and aggravate other serious health
problems. Limit outdoor activities and keep children indoors if it
is smoky. Please follow medical advice if you have a heart or lung
condition.
For additional information...please visit the Web site at
http://www.oregon.gov/DEQ
Oregon Department of Environmental Quality has issued an Air
Quality Advisory...in effect until 11 AM PDT Tuesday.
The advisory is in effect for all of Klamath County, including
Crater Lake, Chemult, Crescent, Chiloquin, Klamath Falls, Sprague
River, Beatty, and Bly.
Wildfires burning in the region combined with forecast conditions
will cause air quality levels to fluctuate and could be at unhealthy
levels.
Smoke levels can change rapidly depending on the weather. People at
risk include infants and young children, people with heart or lung
disease, older adults and pregnant people.
People can take the following precautions to protect their health:
- Follow local burn restrictions to prevent deteriorating air quality.
- Avoid strenuous outdoor activity during periods of poor air quality.
- People with heart or lung problems and young children are
especially vulnerable. These people should stay indoors while smoke
levels are high.
- Use certified High Efficiency Particulate Air (HEPA) filters in
indoor heating, ventilation, cooling and air purification systems.
- Avoid using wood-burning stoves and other sources of indoor smoke
if possible.
For additional information...please visit the web site at
https://oregonsmoke.org
SVRBOI
The National Weather Service in Boise has issued a
* Severe Thunderstorm Warning for...
North central Malheur County in southeastern Oregon...
* Until 230 PM PDT.
* At 150 PM PDT, a severe thunderstorm was located over Ironside, or
31 miles south of Baker City, moving southeast at 5 mph.
HAZARD...Quarter size hail.
SOURCE...Radar indicated.
IMPACT...Damage to vehicles is expected.
* This severe thunderstorm will remain over mainly rural areas of
north central Malheur County.
At 146 PM PDT, Doppler radar was tracking a strong thunderstorm over
Ironside, or 31 miles south of Baker City, moving southeast at 5 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
visibility. Minor damage to outdoor objects is possible.
This storm will remain over mainly rural areas of north central
Malheur County.
* WHAT...Flash flooding caused by excessive rainfall continues to be
possible.
* WHERE...Portions of Idaho, including the following areas, Boise
Mountains, Camas Prairie, Lower Treasure Valley, Owyhee Mountains,
Southern Twin Falls County, Southwest Highlands, Upper Treasure
Valley, Upper Weiser River, West Central Mountains and Western
Magic Valley and southeast Oregon, including the following area,
Oregon Lower Treasure Valley.
* WHEN...Until midnight MDT /11 PM PDT/ tonight.
* IMPACTS...Heavy rainfall could trigger flash flooding or debris
flows in and near recent wildfire burn scars.
* ADDITIONAL DETAILS...
- https://www.weather.gov/safety/flood
...RED FLAG WARNING IN EFFECT THROUGH THIS EVENING FOR OUTFLOW
WINDS AND HIGH INSTABILITY...
* AFFECTED AREA...In Oregon, Fire Weather Zone 689 Northern
Willamette National Forest and Fire Weather Zone 690 Southern
Willamette National Forest.
* THUNDERSTORMS...Isolated to scattered thunderstorms. 15-25%
chance of thunderstorms through this evening. 5% chance for
wetting rains with passing thunderstorms.
* UNSTABLE...High instability with elevated mixing heights may
promote pyroconvective activity.
* OUTFLOW WINDS...Instantaneous gusts as high as 40 mph. Gusts at
these speeds can be observed tens of miles away from the core of
the thunderstorm.
* IMPACTS...Conditions may be favorable for rapid fire spread
which may threaten life and property. Thunderstorm outflow
winds may result in unanticipated erratic fire spread. High
instability may result in fire growth. Frequent lightning and
critically dry fuels may result in fire starts.
...RED FLAG WARNING IN EFFECT THROUGH THIS EVENING FOR OUTFLOW
WINDS AND HIGH INSTABILITY...
* AFFECTED AREA...In Oregon, Fire Weather Zone 688 Mt. Hood
National Forest Region. In Washington, Fire Weather Zone 634
Southern Gifford Pinchot National Forest and Fire Weather Zone
635 Mt. Adams Ranger District of the Gifford-Pinchot National
Forest.
* THUNDERSTORMS...Isolated to scattered thunderstorms. 20-30%
chance of thunderstorms through this evening. 10-15% chance for
wetting rains with passing thunderstorms.
* UNSTABLE...High instability with elevated mixing heights may
promote pyroconvective activity.
* OUTFLOW WINDS...Instantaneous gusts as high as 40 mph. Gusts at
these speeds can be observed tens of miles away from the core of
the thunderstorm.
* IMPACTS...Conditions may be favorable for rapid fire spread
which may threaten life and property. Thunderstorm outflow
winds may result in unanticipated erratic fire spread. High
instability may result in fire growth. Frequent lightning and
critically dry fuels may result in fire starts.
* IMPACTS...Abundant lightning on dry fuels resulting in the
potential for numerous new fire starts.
* AFFECTED AREA...In California, Fire weather zones 281, 284,
and 285, and in Oregon, Fire weather zones 617, 623, 624, and
625.
* THUNDERSTORMS...Scattered thunderstorms with abundant
lightning expected. Storms are likely to be wet, but lightning
strikes outside of precipitation cores are possible, and may
cause many new fire starts.
* OUTFLOW WINDS...Gusts of 35 to 50 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
