* WHAT...Temperatures of 100 to 103 in the lowest elevations.
* WHERE...Portions of south central and southwest Idaho and
southeast Oregon.
* WHEN...Until 9 PM MDT /8 PM PDT/ Wednesday.
* IMPACTS...Hot temperatures may cause heat illnesses to occur.
* WHAT...Dangerously hot conditions with temperatures up to 104
to 108.
* 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.
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
Oregon Department of Environmental Quality has issued an Air Quality
Advisory...IN EFFECT FROM 10 AM SATURDAY TO MIDNIGHT PDT SATURDAY
NIGHT.
An Air Quality Advisory for Ozone has been issued. High levels of
ozone in the lower atmosphere in the region combined with
forecasted conditions will cause air quality to reach unhealthy
levels at times through Saturday evening.
Smog and Ozone irritates the eyes, nose and lungs, and contributes to
breathing problems. Consult your health care provider if these
symptoms worsen.
For additional information...please visit the Web site at
http://www.oregon.gov/DEQ
The National Weather Service in Portland has issued a Fire
Weather Watch for thunderstorms, which is in effect from late
Saturday night through Sunday evening.
* AFFECTED AREA...In Oregon, Fire Weather Zone 684 Northern and
Central Willamette Valley. In Washington, Fire Weather Zone
633 Clark County Lowlands and Swift Reservoir Region.
* 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.
The National Weather Service in Portland has issued a Fire
Weather Watch for thunderstorms, which is in effect from Saturday
afternoon through Sunday evening.
* AFFECTED AREA...In Oregon, Fire Weather Zone 683 Central
Oregon Coast Range, Fire Weather Zone 685 Southern Willamette
Valley, Fire Weather Zone 686 Northern Oregon Cascade
Foothills, Fire Weather Zone 687 Central Oregon Cascade
Foothills, Fire Weather Zone 688 Mt. Hood National Forest
Region, 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.
* WHAT...Dangerously hot conditions with afternoon temperatures of
100-110 degrees expected over the weekend. 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...From 11 AM Saturday to 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 afternoon temperatures of 95-105
degrees expected over the weekend. 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...From 11 AM Saturday to 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.
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, AND UNSTABLE CONDITIONS EXPECTED SATURDAY THROUGH
SUNDAY...
A strong ridge of high pressure will amplify over the Pacific
Northwest this weekend leading to hot, dry, and unstable
conditions. The combination will result in conditions conducive to
extreme fire behavior, particularly for any ongoing fires in the
region.
The National Weather Service in Pendleton has issued a Red Flag
Warning for dry and unstable conditions, which is in effect from
11 AM Saturday to 11 PM PDT Sunday. The Fire Weather Watch is no
longer in effect.
* AFFECTED AREA...Fire Weather Zones 642 Southern Blue and
Strawberry Mountains and 644 Central Blue Mountains.
* TIMING...Saturday 11 AM to Sunday 11 PM.
* WINDS...Northeast 5 to 12 mph.
* RELATIVE HUMIDITY...As low as 10 percent.
* TEMPERATURES...Up to 95 to 105 degrees.
* IMPACTS...Current fires could exhibit extreme fire behavior.
* HAINES...As high as 6.
* WHAT...High concentration of smoke particulates from wildfire
smoke.
* WHERE...Harney and Malheur Counties.
* WHEN...AIR QUALITY ALERT IN EFFECT UNTIL 2 PM PDT MONDAY.
* IMPACTS...Smoke can irritate the eyes, lungs and worsen some
medical conditions. People most at risk to adverse health effects
include infants, young children, people with heart or lung
disease, older adults, and pregnant women.
* ADDITIONAL DETAILS...Smoke levels can change rapidly depending on
weather. Check current conditions on the Oregon Smoke Information
Blog, DEQ's Air Quality Index, or by downloading the free
OregonAIR app on your smartphone.
* WHAT...High temperatures of up 100 to 108 degrees expected.
* WHERE...Klamath, Modoc, Lake, and central and eastern Siskiyou
counties, including Klamath Falls, Weed, Yreka, Mount Shasta
City, Lakeview, Alturas, Chiloquin, Chemult, Fort Rock, and
Christmas Valley.
* WHEN...From 11 AM to 11 PM PDT Saturday.
* IMPACTS...Hot temperatures may cause heat illnesses to occur.
* View the hazard area in detail at
https://www.wrh.noaa.gov/map/?wfo=mfr
Oregon Department of Environmental Quality has issued an Air
Pollution Advisory...in effect until 5 PM PDT Monday.
The Oregon Department of Environmental Quality issued an air quality
advisory for Klamath and northern Lake counties due to numerous
wildfires burning in the region. DEQ also expects other areas of the
state may see intermittent smoke from ongoing large wildfires,
including eastern Douglas and northeast Jackson counties.
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. 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.
DEQs color-coded Air Quality Index provides current air quality
conditions and ranks air quality as follows: Green is good. Yellow is
moderate. Orange is unhealthy for sensitive groups such as children,
the elderly, pregnant women and those with respiratory conditions.
Red is unhealthy for everyone. Purple is very unhealthy for all
groups. Maroon is hazardous.
For additional information...please visit the web site at
https://oregonsmoke.org
...POTENTIAL FOR ABUNDANT LIGHTNING ON SUNDAY INTO EARLY
MONDAY...
The National Weather Service in Boise has issued a Fire Weather
Watch for lightning, which is in effect from Sunday morning
through late Sunday night.
* Thunderstorms...Chance for thunderstorms (20 percent) and
abundant lightning Sunday into Monday morning. Best chance
looks to be across southern Burns and Vale BLM.
* Outflow Winds...Up to 55 MPH possible.
* Timing...From Sunday morning through late Sunday night.
* WHAT...Dangerously hot conditions with temperatures up to 105
and lower elevation valleys near the Snake River seeing up to
110.
* WHERE...Baker County.
* WHEN...Until 11 PM PDT Monday.
* IMPACTS...Extreme heat will significantly increase the
potential for heat related illnesses, particularly for those
working or participating in outdoor activities.
* WHAT...Dangerously hot conditions with temperatures from 105 to
110. The hottest temperatures will occur Sunday and Monday
afternoon.
* WHERE...Portions of southwest and west central Idaho and
southeast Oregon.
* WHEN...Until midnight MDT Monday night.
* IMPACTS...Extreme heat will significantly increase the
potential for heat related illnesses, particularly for those
working or participating in outdoor activities.
An upper level low will move up from the south along the
California coast Saturday, and will tap into some moisture that
is expected to increase late Saturday afternoon into Saturday
night. At the same time elevated instability will increase along
with a moderate to strong trigger which could result in isolated
to possibly scattered thunderstorms in the overnight period
Saturday into Sunday morning. Given how dry fuels are along with
the recent hot stretch, lightning efficiency will he high despite
storms coming in during the night.
The National Weather Service in Medford has issued a Fire Weather
Watch, which is in effect from Saturday afternoon through Sunday
morning.
* IMPACTS...Given the recent prolonged stretch of very hot and
very dry conditions, lightning efficiency will be high to very
high for fire starts. Any fires that develop will likely spread
rapidly. Additionally, winds will allow for new and existing
fires to grow rapidly out of control.
* AFFECTED AREA...All of Fire Zones 615, 616, 617, 618, 619, 620,
622, and 623.
* THUNDERSTORMS...Isolated to scattered thunderstorms are possible
Saturday night. 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
* WHAT...Daytime temperatures between 94 and 98 degrees expected.
* WHERE...Portions of southwest Washington and northwest Oregon,
including the Willamette Valley, the Portland Metro Area, Clark
County lowlands, the western and central Columbia River Gorge, and
Hood River Valley.
* WHEN...From 11 AM to 11 PM PDT Saturday.
* IMPACTS...Hot temperatures may cause heat illnesses.
* WHAT...Dangerously hot conditions with temperatures of 100-110
degrees expected over the weekend. 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...From 11 AM Saturday to 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.
