Significant moisture associated with a passing cold front could
lead to periods of heavy rainfall, especially in and around
thunderstorms throughout the afternoon and evening. This could lead
to flooding in areas surrounding burn scars associated with the 2024
and 2025 fire seasons.
* WHAT...Flash flooding caused by excessive rainfall is possible.
Rain rates of 1 inch per hour possible within thunderstorm cells.
* WHERE...Portions of central and northeast Oregon, including the
following areas, in central Oregon, John Day Basin and Ochoco-John
Day Highlands. In northeast Oregon, Southern Blue Mountains of
Oregon.
* WHEN...Saturday, August 23.
* IMPACTS...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 over the burn scar, which may lead to flash flooding
and debris flows.
- http://www.weather.gov/safety/flood
* WHAT...Flash flooding caused by excessive rainfall is possible.
* WHERE...Portions of southwest Idaho, including the following
areas, Lower Treasure Valley, Upper Weiser River and West Central
Mountains and Oregon, including the following areas, Baker County,
Harney County, Malheur County and Oregon Lower Treasure Valley.
* WHEN...From Saturday afternoon through Saturday 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 burn scars, which may lead to flash flooding
and debris flows.
- https://www.weather.gov/safety/flood
* IMPACTS...Moderate to strong winds combined with critically
low relative humidity can lead to rapid growth and spread of
new and existing fires. Outdoor burning is banned during fire
season.
* AFFECTED AREA...Portions of the Rogue Valley in Fire Weather
Zone 622, including Medford, White City, Gold Hill,
Jacksonville, Talent, Phoenix, and Ashland. In Fire Weather
Zone 620, portions of the Rogue and Illinois valleys,
including Merlin, Grants Pass, Wilderville, Murphy and
Provolt.
* WIND...Northwest 10 to 15 mph with gusts of 20 to 25 mph.
* HUMIDITY...14 to 18 percent.
* DETAILED URL...View the hazard area in detail at
https://www.wrh.noaa.gov/map/?wfo=mfr
* IMPACTS...Moderate to strong winds combined with critically
low relative humidity can lead to rapid growth and spread of
new and existing fires. Outdoor burning is banned during fire
season.
* AFFECTED AREA...The Fremont Winema National Forest in Fire
Weather Zone 624, including from Klamath Falls to Chemult
over to Lakeview.
* WIND...West 10 to 15 mph with gusts 25 to 30 mph.
* HUMIDITY...12 to 18 percent.
* DETAILED URL...View the hazard area in detail at
https://www.wrh.noaa.gov/map/?wfo=mfr
* WHAT...Temperatures up to 102.
* WHERE...Oregon Lower Treasure Valley.
* WHEN...Until 9 PM MDT /8 PM PDT/ this evening.
* IMPACTS...Hot temperatures may cause heat illnesses, especially
for the young, elderly, and animals.
* IMPACTS...Moderate to strong winds combined with critically
low relative humidity can lead to rapid growth and spread of
new and existing fires. Outdoor burning is banned during fire
season.
* AFFECTED AREA...Portions of the Rogue Valley in Fire Weather
Zone 622, including Medford, White City, Gold Hill,
Jacksonville, Talent, Phoenix, and Ashland. In Fire Weather
Zone 620, portions of the Rogue and Illinois valleys,
including Merlin, Grants Pass, Wilderville, Murphy and
Provolt.
* WIND...Northwest 10 to 15 mph with gusts of 20 to 25 mph.
* HUMIDITY...14 to 18 percent.
* DETAILED URL...View the hazard area in detail at
https://www.wrh.noaa.gov/map/?wfo=mfr
* IMPACTS...Moderate to strong winds combined with critically
low relative humidity can lead to rapid growth and spread of
new and existing fires. Outdoor burning is banned during fire
season.
* AFFECTED AREA...The Fremont Winema National Forest in Fire
Weather Zone 624, including from Klamath Falls to Chemult
over to Lakeview.
* WIND...West 10 to 15 mph with gusts 25 to 30 mph.
* HUMIDITY...12 to 18 percent.
* DETAILED URL...View the hazard area in detail at
https://www.wrh.noaa.gov/map/?wfo=mfr
* WHAT...Temperatures up to 101.
* WHERE...Oregon Lower Treasure Valley.
* WHEN...Until 9 PM MDT /8 PM PDT/ this evening.
* IMPACTS...Hot temperatures may cause heat illnesses, especially
for the young, elderly, and animals.
* WHAT...Visibility one quarter mile or less in dense fog. Beaches,
headlands, and coastal areas will be most impacted.
* WHERE...South Washington and North and Central Oregon Coast.
* WHEN...Until 11 AM PDT this morning.
* IMPACTS...Low visibility could make driving conditions hazardous.
* ADDITIONAL DETAILS...Fog and low stratus will be patchy along the
north Oregon and south Washington Coast, but when it does form, it
will be dense. Highest concentration of dense fog will be from
Lincoln City south towards Florence. Areas from Cannon Beach north
will see fog burn off the quickest in the morning.
...BREEZY WINDS WITH LOW RELATIVE HUMIDITY THROUGH WEDNESDAY...
.An approaching weather system will result in breezy winds
accompanied by low relative humidity across south-central to
southeast Washington and central to northeast Oregon.
* AFFECTED AREA...Fire Weather Zones 696 John Day Valley, 698
Southern Blue Mountains, 700 Central Mountains of Oregon, 703
Warm Springs Reservation, 704 Northern Deschutes National
Forest and 705 Southern Deschutes National Forest.
* TIMING...Until 11 PM PDT Wednesday.
* WINDS...West 10 to 20 mph with gusts up to 25 mph.
* RELATIVE HUMIDITY...As low as 12 percent.
* IMPACTS...Any fire that develops will catch and spread
quickly. Outdoor burning is not recommended.
...BREEZY WINDS WITH LOW RELATIVE HUMIDITY THROUGH WEDNESDAY...
.An approaching weather system will result in breezy winds
accompanied by low relative humidity across south-central to
southeast Washington and central to northeast Oregon.
* AFFECTED AREA...Fire Weather Zones 690 Kittitas Valley, 691
Lower Columbia Basin of Oregon, 691 Lower Columbia Basin of
Washington, 692 Blue Mountains of Washington, 693 Canyon
Grasslands of Wallowa County, 693 Southeast Washington Grande
Ronde Valley, 694 Yakama Alpine District, 701 Eastern Columbia
River Gorge of Oregon and 702 East Slopes of the Mt. Hood
National Forest.
* TIMING...From noon to 9 PM PDT Wednesday.
* WINDS...West 15 to 25 mph with gusts of 25 to 40 mph.
* RELATIVE HUMIDITY...As low as 12 percent.
* IMPACTS...Any fire that develops will catch and spread
quickly. Outdoor burning is not recommended.
* WHAT...Visibility one quarter mile or less in dense fog. Beaches,
headlands, and coastal areas will be most impacted.
* WHERE...South Washington and North and Central Oregon Coast.
* WHEN...From 1 AM to 11 AM PDT Wednesday.
* IMPACTS...Low visibility could make driving conditions hazardous.
* ADDITIONAL DETAILS...Fog and low stratus will be patchy along the
north Oregon and south Washington Coast, but when it does form, it
will be dense. Highest concentration of dense fog will be from
Lincoln City south towards Florence. Areas from Cannon Beach north
will see fog burn off the quickest in the morning.
The National Weather Service in Medford has issued a Red Flag
Warning, which is in effect from 2 PM to 8 PM PDT Wednesday.
* IMPACTS...Moderate to strong winds combined with critically
low relative humidity can lead to rapid growth and spread of
new and existing fires. Outdoor burning is banned during fire
season.
* AFFECTED AREA...Portions of the Rogue Valley in Fire Weather
Zone 622, including Medford, White City, Gold Hill,
Jacksonville, Talent, Phoenix, and Ashland. In Fire Weather
Zone 620, portions of the Rogue and Illinois valleys,
including Merlin, Grants Pass, Wilderville, Murphy and
Provolt.
* WIND...Northwest 10 to 15 mph with gusts of 20 to 25 mph.
* HUMIDITY...14 to 18 percent on Wednesday.
* DETAILED URL...View the hazard area in detail at
https://www.wrh.noaa.gov/map/?wfo=mfr
The National Weather Service in Medford has issued a Red Flag
Warning, which is in effect from 2 PM to 8 PM PDT Wednesday.
* IMPACTS...Moderate to strong winds combined with critically
low relative humidity can lead to rapid growth and spread of
new and existing fires. Outdoor burning is banned during fire
season.
* AFFECTED AREA...The Fremont Winema National Forest in Fire
Weather Zone 624, including from Klamath Falls to Chemult
over to Lakeview.
* WIND...West 10 to 15 mph with gusts 25 to 30 mph.
* HUMIDITY...12 to 18 percent on Wednesday.
* DETAILED URL...View the hazard area in detail at
https://www.wrh.noaa.gov/map/?wfo=mfr
* WHAT...Temperatures up to 101.
* WHERE...Oregon Lower Treasure Valley.
* WHEN...Until 9 PM MDT /8 PM PDT/ Wednesday.
* IMPACTS...Hot temperatures may cause heat illnesses, especially
for the young, elderly, and animals.
* WHAT...Dangerously hot temperatures of 100 to near 110 degrees.
* WHERE...The valleys of Josephine and Jackson Counties. This
includes the communities of Agness, Grants Pass, Cave Junction,
Williams, Ruch, Rogue River, Gold Hill, White City, Shady Cove,
Medford, Jacksonville, Talent and Ashland.
* WHEN...Until 2 AM PDT Wednesday.
* IMPACTS...Unusually hot temperatures will increase risk for heat
illnesses.
* WHAT...Hot temperatures near 100 to 105 degrees.
* WHERE...The valleys of central Douglas County. This includes the
communities of Camas Valley, Elkton, Drain, Sutherlin, Roseburg,
Glendale, Riddle and Canyonville.
* WHEN...Until 2 AM PDT Wednesday.
* IMPACTS...Unusually hot temperatures will increase risk for heat
illnesses.
* WHAT...Hot temperatures of 95 to 100 degrees.
* WHERE...In California, Modoc County, North Central and Southeast
Siskiyou County, and Northeast Siskiyou and Northwest Modoc
Counties. In Oregon, Klamath Basin.
* WHEN...Until 2 AM PDT Wednesday.
* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.
...BREEZY WINDS WITH LOW RH VALUES THROUGH WEDNESDAY...
.An approaching system will result in breezy winds Tuesday and
Wednesday as hot and dry conditions persist. Main concerns
Tuesday are focused across Central Oregon, extending into Central
Washington Wednesday.
The National Weather Service in Pendleton has issued a Red Flag
Warning for wind and low relative humidity, which is in effect
from noon to 9 PM PDT Wednesday.
* AFFECTED AREA...Fire Weather Zones 691 Lower Columbia Basin of
Oregon, 701 Eastern Columbia River Gorge of Oregon and 702
East Slopes of the Mt. Hood National Forest.
* TIMING...From noon to 9 PM PDT Wednesday.
* WINDS...West 15 to 25 mph with gusts up to 40 mph.
* RELATIVE HUMIDITY...As low as 12 percent.
* IMPACTS...Any fire that develops will catch and spread
quickly. Outdoor burning is not recommended.
...BREEZY WINDS WITH LOW RH VALUES THROUGH WEDNESDAY...
.An approaching system will result in breezy winds Tuesday and
Wednesday as hot and dry conditions persist. Main concerns
Tuesday are focused across Central Oregon, extending into Central
Washington Wednesday.
The National Weather Service in Pendleton has issued a Red Flag
Warning for wind and low relative humidity, which is in effect
from noon to 9 PM PDT Wednesday. The Fire Weather Watch is no
longer in effect.
* AFFECTED AREA...Fire Weather Zones 690 Kittitas Valley, 691
Lower Columbia Basin of Washington, 692 Blue Mountains of
Washington, 693 Canyon Grasslands of Wallowa County, 693
Southeast Washington Grande Ronde Valley and 694 Yakama Alpine
District.
* TIMING...From noon to 9 PM PDT Wednesday.
* WINDS...West 15 to 25 mph with gusts up to 35 mph.
* RELATIVE HUMIDITY...As low as 12 percent.
* IMPACTS...Any fire that develops will catch and spread
quickly. Outdoor burning is not recommended.
