* IMPACTS...Strong winds combined with critically low relative
humidity can lead to the rapid growth and spread of new and
existing fires.
* AFFECTED AREA...In Oregon, the southeastern corner of Fire
Weather Zone 624, including Lakeview. Much of Fire Weather
Zone 625 south of Summer Lake and the Christmas Valley. This
includes the Warner Peak Fire, Adel, Paisley and the Hart
Mountain Refuge. In California, the eastern half of Fire
Weather Zone 285, including Alturas.
* WIND...South winds 20 to 30 mph with gusts up to 45 mph.
* HUMIDITY...10 to 15 percent.
* DETAILED URL...View the hazard area in detail at
https://www.wrh.noaa.gov/map/?wfo=mfr
* WHAT...Flash flooding and debris flows caused by excessive
rainfall continue to be possible. The greatest concern remains
over the 2024 burn areas associated with active wildfires, but
there is also a small probability that rainfall rates could
approach threshold values over burn areas from previous years.
* WHERE...Portions of Oregon, including the following areas,
Cascades of Lane County, Cascades of Marion and Linn Counties and
North Oregon Cascades and southwest Washington, including the
following area, South Washington Cascades.
* WHEN...From 2 PM PDT this afternoon through late tonight.
* IMPACTS...Heavy rainfall over Cascade burn areas during the period
of the watch. Residents near the 2024 burn areas associated with
active wildfires should prepare for potential flooding impacts. Be
sure to stay up to date with information from local authorities.
Heavy rainfall could trigger flash flooding of low-lying areas,
urbanized street flooding, and debris flows in and near recent
wildfire burn scars.
* ADDITIONAL DETAILS...
- National Weather Service Meteorologists are forecasting heavy
rainfall, which may lead to flash flooding and debris flows
over recent burn areas in the Cascades. Hourly rainfall rates
up to 0.75 inches per hour will be possible.
- http://www.weather.gov/safety/flood
...STRONG TO SEVERE THUNDERSTORMS WILL IMPACT THE CASCADE
MOUNTAINS TODAY, EXTENDING TO THE EASTERN SLOPES, WHILE
SOUTHEASTERN OREGON SEES DRY, WINDY, AND UNSTABLE CONDITIONS...
.A potent weather system will bring a myriad of impacts to the
forecast area today. For the Cascade Mountains and east slopes,
strong to severe thunderstorms will trek across primarily the
spine of the Cascades starting in the afternoon down around
central Oregon, advancing northward into the Washington Cascades
by the evening. While storms along the Cascades are expected to be
accompanied by a significant wetting rain, isolated to scattered
storms extending into the east slopes and portions of the Columbia
Basin will be much drier, leading to critical fire weather
conditions due to abundant lightning with a lack of wetting rain.
For southeastern Oregon, this same weather system will usher in
hot and dry desert air, leading to breezy winds combined with low
RHs and locally unstable conditions. Showers and storms are not
anticipated to track as far east as southeastern Oregon.
Users should note that OR641 and WA691 are under partial Red Flag
Warnings. The Warned zones include only the western half of each
zone, and not the entirety of the zone.
The National Weather Service in Pendleton has issued a Red Flag
Warning for abundant lightning, which is in effect from 2 PM this
afternoon to 11 PM PDT this evening. The Fire Weather Watch is no
longer in effect.
* AFFECTED AREA...Portions of Fire Weather Zone 641 Lower Columbia
Basin of Oregon. The easternmost extent of the Warning ends at
a line extending from Boardman to Ione.
* IMPACTS...Thunderstorms will be capable of producing frequent
cloud-to-ground lightning and erratic, gusty outflow winds.
This combination will promote conditions conducive to new fire
starts and rapid fire spread for new and existing fires.
* THUNDERSTORMS...Abundant lightning with frequent cloud-to-
ground lightning strikes.
* OUTFLOW WINDS...Gusty winds up to 50 mph.
...STRONG TO SEVERE THUNDERSTORMS WILL IMPACT THE CASCADE
MOUNTAINS TODAY, EXTENDING TO THE EASTERN SLOPES, WHILE
SOUTHEASTERN OREGON SEES DRY, WINDY, AND UNSTABLE CONDITIONS...
.A potent weather system will bring a myriad of impacts to the
forecast area today. For the Cascade Mountains and east slopes,
strong to severe thunderstorms will trek across primarily the
spine of the Cascades starting in the afternoon down around
central Oregon, advancing northward into the Washington Cascades
by the evening. While storms along the Cascades are expected to be
accompanied by a significant wetting rain, isolated to scattered
storms extending into the east slopes and portions of the Columbia
Basin will be much drier, leading to critical fire weather
conditions due to abundant lightning with a lack of wetting rain.
For southeastern Oregon, this same weather system will usher in
hot and dry desert air, leading to breezy winds combined with low
RHs and locally unstable conditions. Showers and storms are not
anticipated to track as far east as southeastern Oregon.
Users should note that OR641 and WA691 are under partial Red Flag
Warnings. The Warned zones include only the western half of each
zone, and not the entirety of the zone.
* AFFECTED AREA...Fire Weather Zone 642 Southern Blue and
Strawberry Mountains.
* WINDS...South 10 to 20 mph with gusts up to 30 mph.
* RELATIVE HUMIDITY...As low as 10 percent.
* IMPACTS...Gusty winds with dry conditions may lead to rapid
fire spread. Unstable conditions may promote extreme fire
behavior as well.
* AFFECTED AREA...Fire Weather Zone 641 Lower Columbia Basin of
Oregon.
* IMPACTS...Thunderstorms will be capable of producing frequent
cloud-to-ground lightning and erratic, gusty outflow winds.
This combination will promote conditions conducive to new fire
starts and rapid fire spread for new and existing fires.
* THUNDERSTORMS...Abundant lightning with frequent cloud-to-
ground lightning strikes.
* OUTFLOW WINDS...Gusty winds up to 50 mph.
* AFFECTED AREA...Fire Weather Zone 642 Southern Blue and
Strawberry Mountains.
* WINDS...South 10 to 20 mph with gusts up to 25 mph.
* RELATIVE HUMIDITY...As low as 10 percent.
* IMPACTS...Gusty winds with dry conditions may lead to rapid
fire spread. Unstable conditions may promote extreme fire
behavior as well.
* WHAT...Flash flooding and debris flows caused by excessive
rainfall continue to be possible over the 2024 burn areas
associated with active wildfires.
* WHERE...Portions of Oregon, including the following areas,
Cascades of Lane County, Cascades of Marion and Linn Counties and
North Oregon Cascades and southwest Washington, including the
following area, South Washington Cascades.
* WHEN...From Saturday afternoon through late Saturday night.
* IMPACTS...Heavy rainfall is expected over the 2024 burn areas
associated with active wildfires. Residents near these areas
should prepare for potential flooding impacts. Be sure to stay up
to date with information from local authorities. Heavy rainfall
could trigger flash flooding of low-lying areas, and debris flows
in and near recent wildfire burn scars.
* ADDITIONAL DETAILS...
- National Weather Service Meteorologists are forecasting heavy
rainfall over 2024 burn areas associated with active
wildfires, which may lead to flash flooding and debris flows.
Hourly rainfall rates up to 0.75 inches per hour will be
possible.
- http://www.weather.gov/safety/flood
* AFFECTED AREA...Fire Weather Zone 641 Lower Columbia Basin of
Oregon...mainly west of Hermiston.
* IMPACTS...Thunderstorms will be capable of producing frequent
cloud-to-ground lightning and erratic, gusty outflow winds.
This combination will promote conditions conducive to new fire
starts and rapid fire spread for new and existing fires.
* THUNDERSTORMS...Abundant lightning with frequent cloud-to-
ground lightning strikes.
* OUTFLOW WINDS...Gusty winds up to 50 mph.
The National Weather Service in Pendleton has issued a Red Flag
Warning for wind and low relative humidity, which is in effect
from 1 PM to 8 PM PDT Saturday. The Fire Weather Watch is no
longer in effect.
* AFFECTED AREA...Fire Weather Zone 642 Southern Blue and
Strawberry Mountains.
* WINDS...South 10 to 20 mph with gusts up to 25 mph.
* RELATIVE HUMIDITY...As low as 8 percent.
* IMPACTS...Gusty winds with dry conditions may lead to rapid
fire spread. Unstable conditions may promote extreme fire
behavior as well.
...WARM, VERY DRY, AND WINDY TOMORROW AFTERNOON AND EVENING IN
OR636, OR637, ID423, AND ID426...
...HIGH HAINES, WARM, DRY, AND WINDY TOMORROW AFTERNOON AND
EVENING IN IDAHO ZONES 401, 402, 403, AND 421...
The National Weather Service in Boise has issued a Red Flag
Warning for gusty winds and low relative humidities, which is in
effect from 1 PM MDT /noon PDT/ to 8 PM MDT /7 PM PDT/ Saturday.
This is an upgrade from the Fire Weather Watch.
* Affected Area...In Idaho, Fire Weather Zones 423 Owyhee
Mountains and 426 Southern Highlands. In Oregon, Fire Weather
Zones 636 Burns BLM and 637 Vale BLM.
* Timing...From 1 PM MDT /noon PDT/ to 8 PM MDT /7 PM PDT/
Saturday.
* Winds...South 10 to 20 mph with gusts up to 30 to 40 mph.
* Relative Humidity...As low as 8 percent.
* Temperatures...Up to 93.
Oregon Department of Environmental Quality has issued an Air
Quality Advisory...in effect until noon PDT Monday.
This air quality advisory covers Lake and northern Klamath counties
due to wildfires burning in the region. The DEQ also expects
intermittent smoke in eastern Douglas and Jackson County through this
period due to smoke from surrounding fires.
The wildfire smoke 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 and planned
burn operations. Smoke can irritate the eyes and lungs and worsen
some medical conditions. People most 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 Medford has issued a Red Flag
Warning, which is in effect from 1 PM to 9 PM PDT Saturday.
* IMPACTS...Abundant lightning on dry fuels could lead to numerous
new fire starts. Gusty, shifting outflow winds could also result
in changing fire behavior and spread. These winds could also
present a danger to aircraft and ground personnel.
* AFFECTED AREA...In California...Fire weather zones 280 and 281.
In Oregon...Fire weather zones 616, 617, 620, 621, 622 and 623.
* THUNDERSTORMS...Scattered to numerous thunderstorms are expected
to develop Saturday afternoon and move from south to north
through the area into Saturday evening. These storms will
contain frequent and abundant cloud to ground lightning. Some of
the stronger thunderstorms may contain strong to severe wind
gusts and hail. Rainfall is expected with these storms and could
be heavy at times.
* OUTFLOW WINDS...Gusts up to 60 mph.
* HAIL POTENTIAL...5 to 15 percent chance of one half to 1 inch
diameter hail.
* DETAILED URL...View the hazard area in detail at
https://www.wrh.noaa.gov/map/?wfo=mfr
The National Weather Service in Medford has upgraded the Fire
Weather Watch to a Red Flag Warning, which is in effect from 2 PM
to 8 PM PDT Saturday.
* IMPACTS...Strong winds combined with critically low relative
humidity can lead to the rapid growth and spread of new and
existing fires.
* AFFECTED AREA...In Oregon, the southeastern corner of Fire
Weather Zone 624, including Lakeview. Much of Fire Weather Zone
625 south of Summer Lake and the Christmas Valley. This includes
the Warner Peak Fire, Adel, Paisley and the Hart Mountain
Refuge. In California, the eastern half of Fire Weather Zone
285, including Alturas.
* WIND...South winds 20 to 30 mph with gusts 35 to 50 mph.
* HUMIDITY...10 to 15 percent.
* DETAILED URL...View the hazard area in detail at
https://www.wrh.noaa.gov/map/?wfo=mfr
Oregon Department of Environmental Quality has issued an Air Quality
Advisory...IN EFFECT UNTIL 5 PM PDT MONDAY.
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
...HOT, DRY, WINDY TOMORROW AFTERNOON AND EVENING IN OR636,
OR637, ID423, AND ID426...
...HIGH HAINES AND HOT, DRY, WINDY TOMORROW AFTERNOON AND EVENING
IN IDAHO ZONES 401, 402, 403, AND 421...
* Affected Area...In Idaho, Fire Weather Zones 423 Owyhee
Mountains and 426 Southern Highlands. In Oregon, Fire Weather
Zones 636 Burns BLM and 637 Vale BLM.
* Timing...From Saturday afternoon through Saturday evening.
* Winds...South 15 to 20 mph with gusts up to 35 mph.
* Relative Humidity...As low as 8 percent.
* Temperatures...Up to 94.
* WHAT...Flash flooding and debris flows caused by excessive
rainfall continue to be possible over the 2024 burn areas
associated with active wildfires.
* WHERE...Portions of Oregon, including the following areas,
Cascades of Lane County, Cascades of Marion and Linn Counties and
North Oregon Cascades and southwest Washington, including the
following area, South Washington Cascades.
* WHEN...From Saturday afternoon through late Saturday night.
* IMPACTS...Heavy rainfall is expected over the 2024 burn areas
associated with active wildfires. Residents near these areas
should prepare for potential flooding impacts. Be sure to stay up
to date with information from local authorities. Heavy rainfall
could trigger flash flooding of low-lying areas, and debris flows
in and near recent wildfire burn scars.
* ADDITIONAL DETAILS...
- National Weather Service Meteorologists are forecasting heavy
rainfall over 2024 burn areas associated with active
wildfires, which may lead to flash flooding and debris flows.
Hourly rainfall rates up to 0.75 inches per hour will be
possible.
- http://www.weather.gov/safety/flood
* IMPACTS...Strong winds combined with critically low relative
humidity can lead to the rapid growth and spread of new and
existing fires.
* AFFECTED AREA...In Oregon, the southeastern corner of Fire
Weather Zone 624, including Lakeview. In California, the eastern
half of Fire Weather Zone 285, including Alturas.
* WIND...South winds 20 to 30 mph with gusts 35 to 40 mph.
* HUMIDITY...10 to 15 percent.
* DETAILED URL...View the hazard area in detail at
https://www.wrh.noaa.gov/map/?wfo=mfr
* IMPACTS...Strong winds combined with critically low relative
humidity can lead to the rapid growth and spread of new and
existing fires.
* AFFECTED AREA...Much of Fire Weather Zone 625 south of Summer
Lake and the Christmas Valley. This includes the Warner Peak
Fire, Adel, Paisley and the Hart Mountain Refuge.
* WIND...South winds 20 to 30 mph with gusts 30 to 40 mph, and
gusts up to 45 mph on the ridges.
* HUMIDITY...10 to 15 percent.
* DETAILED URL...View the hazard area in detail at
https://www.wrh.noaa.gov/map/?wfo=mfr
...HOT, DRY, WINDY, AND POTENTIALLY UNSTABLE CONDITIONS EXPECTED
FOR SOUTHEASTERN OREGON ON SATURDAY...
.A robust low pressure system centered off the coast of the
Pacific Northwest will orient the winds aloft more southerly,
pushing in a hot and dry airmass into southern Oregon. Relative
humidities will drop significantly as a result on Saturday. This,
combined with the low pressure system amplifying the wind speeds,
will potentially lead to critical fire weather conditions across
much of southeastern Oregon. Unstable conditions are possible as
well, with values of 5 and locally 6 possible during the day
Saturday.
The National Weather Service in Pendleton has issued a Fire
Weather Watch for wind and low relative humidity, which is in
effect from Saturday afternoon through Saturday evening.
* AFFECTED AREA...Fire Weather Zone 642 Southern Blue and
Strawberry Mountains.
* WINDS...South 15 to 20 mph with gusts up to 30 mph.
* RELATIVE HUMIDITY...As low as 8 percent.
* IMPACTS...Gusty winds with dry conditions may lead to rapid fire
spread. Unstable conditions may promote extreme fire behavior as
well.
The National Weather Service in Medford has cancelled the Red
Flag Warning. Thunderstorms have not developed today and none are
expected through the remainder of the night.
A Fire Weather Watch continues in effect from Saturday afternoon
through Saturday evening.
* IMPACTS...Fire could spread rapidly.
* AFFECTED AREA...Southeast Lake county including the Warner Peak
Fire, Adel and Hart Mountain Refuge.
* WINDS AND HUMIDITY...South winds 20 to 30 mph with gusts up to
45 mph combined with humidity 10 to 15 percent.
* DETAILED URL...View the hazard area in detail at
https://www.wrh.noaa.gov/map/?wfo=mfr
