The Oregon Department of Environmental Quality and the Lane Regional
Air Protection Agency have continued an Air Quality Advisory, which
is IN EFFECT UNTIL 10 PM PDT THIS EVENING.
An Air Quality Advisory for Ozone remains in effect. 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 this evening.
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.
More information about air quality can be found at:
www.orcaa.org
www.swcleanair.gov
www.oregon.gov/DEQ
www.lrapa.org
A surge of deep monsoonal moisture combined with a slow-moving
upper trough will bring periods of heavy showers and thunderstorms
across the region. This airmass contains anomalously high moisture
content, supporting the potential for excessive rainfall. Flash
flooding will be possible, especially in steep terrain, narrow
canyons, and near recent burn scars where soils are less able to
absorb rainfall. The greatest risk will be Tuesday afternoon through
Wednesday evening as repeated rounds of storms move through.
* WHAT...Flash flooding caused by excessive rainfall is 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. Portions of Oregon, including the following areas,
Baker County, Harney County, Malheur County and Oregon Lower
Treasure Valley.
* WHEN...From Tuesday afternoon through Wednesday evening.
* IMPACTS...Heavy rainfall could trigger flash flooding or debris
flows in and near recent wildfire burn scars. In addition urban
street flooding is possible with the stronger storms.
* ADDITIONAL DETAILS...
- https://www.weather.gov/safety/flood
The National Weather Service in Portland has issued a Red Flag
Warning for thunderstorms and high instability, which is in
effect until 8 PM PDT this evening.
* 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...Scattered thunderstorms with critically dry
fuels.
* OUTFLOW WINDS...Gusts up to 40 mph may travel outward up to 25
miles from thunderstorm cores.
* IMPACTS...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 numerous fire starts.
The thunderstorm that has produced significant rainfall continues
to park over the area. Expecting additional rainfall amounts which
may cause localized urban flooding in poor drainage areas. This is
an updated product from the previous advisory.
* WHAT...Urban and small stream flooding caused by excessive
rainfall is expected.
* WHERE...A portion of northwest Oregon, including the following
county, Lane.
* WHEN...Until 845 AM PDT.
* IMPACTS...Minor flooding in low-lying and poor drainage areas.
* ADDITIONAL DETAILS...
- At 629 AM PDT, Doppler radar indicated heavy rain due to
thunderstorms. This will cause urban and potentially small
stream flooding.
- Some locations that will experience flooding include...
Eugene, Springfield, Creswell, Lowell, Dorena, North
Springfield, Pleasant Hill, Dexter, Jasper, Goshen and Dorena
Reservoir.
- http://www.weather.gov/safety/flood
* WHAT...Dangerously hot conditions with high temperatures of 90-98F
and overnight low temperatures of 60-70F expected.
* WHERE...Greater Portland/Vancouver Metro, Western and Central
Columbia River Gorge, the Corbett area and the Hood River Valley,
Central and Southern Willamette Valley, Foothills of the Northern
and Central Oregon Cascades, Lower Columbia River and Cowlitz
River Valleys, and South Washington Cascade Foothills.
* WHEN...Until 11 PM PDT Tuesday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events, especially for those spending time outdoors
or without access to adequate cooling.
* ADDITIONAL DETAILS...The warmest overnight lows are expected to
occur in the Columbia River Gorge and in urban areas from Salem
northward.
* WHAT...Hot conditions with high temperatures up to 93F and
overnight low temperatures of 60-67F possible.
* WHERE...South Washington Cascades and the Northern and Central
Cascades of Oregon, North and Central Coast Range Valleys of
Oregon, and Willapa and Wahkiakum Lowlands.
* WHEN...Until 5 AM PDT Tuesday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events, especially for those spending time outdoors
or without access to adequate cooling.
* WHAT...Morning low temperatures of 60 to 70 degrees, then very hot
conditions with high temperatures of 98 to 104 degrees expected.
* WHERE...The valleys of Josephine and Jackson Counties. This
includes Agness, Grants Pass, Cave Junction, Williams, Ruch, Rogue
River, Gold Hill, White City, Shady Cove, Medford, Jacksonville,
Talent and Ashland.
* WHEN...Until 8 PM PDT this evening.
* IMPACTS...Unusually hot temperatures will increase risk for heat
related illnesses. Warm overnight temperatures will provide little
relief from hot daytime temperatures.
The Oregon Department of Environmental Quality, and the Lane
Regional Air Protection Agency have continued an Air Quality
Advisory, which is in effect until 8 PM this evening.
An Air Quality Advisory for Smoke remains in effect. Wildfires
burning in the region combined with forecasted conditions will cause
air quality to reach unhealthy levels due to smoke and ozone at times
through this evening.
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.
More information about air quality can be found at:
www.orcaa.org
www.swcleanair.gov
www.oregon.gov/DEQ
www.lrapa.org
The Oregon Department of Environmental Quality, and the Lane Regional
Air Protection Agency have continued an Air Quality Advisory, which
is in effect until 8 PM tonight.
An Air Quality Advisory for ozone remains in effect. 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 this evening.
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.
More information about air quality can be found at:
www.orcaa.org
www.swcleanair.gov
www.oregon.gov/DEQ
www.lrapa.org
* IMPACTS...Abundant lightning on dry fuels resulting in the
potential for numerous new fire starts.
* AFFECTED AREA...In California, all of Fire weather zones 280,
281, 282, 284, and 285, and in Oregon, all of Fire weather
zones 617, 620, 621, 622, 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
ESFBOI
Monsoon moisture will bring a threat of showers and thunderstorms
to the region through midweek. High atmospheric moisture will
allow for isolated thunderstorms producing heavy rain
accumulations, leading to an increased threat of flash flooding.
Tuesday and Wednesday currently have the highest chance for
locally heavy rains, especially in southeast Oregon, near the ID-
NV border, and high terrain in southwest Idaho. Conditions dry out
after Thursday.
Burn scars are the highest risk for flash flooding. The Wapiti
Fire burn scar near Grandjean, ID, the Durkee Fire burn scar near
Ironside, OR, and the Lava Fire burn scar near Cascade, ID are of
particular concern for flash flooding.
* WHAT...Hot conditions with temperatures 95 to 100 degrees
expected. This will pose a moderate to locally major risk of
heat-related illness.
* WHERE...In Oregon, Central Oregon, John Day Basin, and Grande
Ronde Valley. In Washington, Northwest Blue Mountains.
* WHEN...Until 9 PM PDT Wednesday.
* IMPACTS...Hot temperatures may cause heat illnesses.
* ADDITIONAL DETAILS...Lingering cloud cover from thunderstorms in
southern Oregon may result in lower than forecast afternoon
temperatures or higher than forecast overnight low temperatures.
* WHAT...Dangerously hot conditions with temperatures up to 98 to
104 degrees expected. This will pose a major to locally extreme
risk of heat-related illness.
* WHERE...Portions of north central and northeast Oregon and
central, south central, and southeast Washington.
* WHEN...Until 9 PM PDT Wednesday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
* ADDITIONAL DETAILS...Lingering cloud cover from thunderstorms in
southern Oregon may result in lower than forecast afternoon
temperatures or higher than forecast overnight low temperatures.
* WHAT...Very hot conditions with high temperatures of 98 to 104
degrees expected. Overnight low temperatures of 60 to 70 degrees.
* WHERE...The valleys of Josephine and Jackson Counties. This
includes Agness, Grants Pass, Cave Junction, Williams, Ruch, Rogue
River, Gold Hill, White City, Shady Cove, Medford, Jacksonville,
Talent and Ashland.
* WHEN...Until 8 PM PDT Monday.
* IMPACTS...Unusually hot temperatures will increase risk for heat
related illnesses. Warm overnight temperatures will provide little
relief from hot daytime temperatures.
* WHAT...Very hot conditions with high temperatures of 100 to 105
degrees expected. Overnight low temperatures of 60 to 70 degrees.
* WHERE...The valleys of Josephine and Jackson Counties. This
includes Agness, Grants Pass, Cave Junction, Williams, Ruch, Rogue
River, Gold Hill, White City, Shady Cove, Medford, Jacksonville,
Talent and Ashland.
* WHEN...Until 8 PM PDT Monday.
* IMPACTS...Unusually hot temperatures will increase risk for heat
related illnesses. Warm overnight temperatures will provide little
relief from hot daytime temperatures.
* WHAT...Hot conditions with high temperatures of 95 to 100 degrees
expected. Overnight low temperatures of 55 to 65 degrees.
* WHERE...The valleys of central and eastern Douglas County. This
includes Camas Valley, Elkton, Drain, Sutherlin, Roseburg,
Glendale, Riddle, Canyonville, Tiller and Toketee Falls.
* WHEN...Until 8 PM PDT this evening.
* IMPACTS...Hot temperatures may cause heat related illnesses.
ESFBOI
Monsoon moisture will bring a threat of showers and thunderstorms to
the region. High atmospheric moisture will allow for isolated heavy
rain accumulations, leading to an increased threat of flash
flooding. Tuesday and Wednesday currently have the highest chance
for locally heavy rains, especially in southeast Oregon, near the
ID-NV border, and high terrain in southwest Idaho. Conditions dry
out after Thursday.
Burn scars are the highest risk for flash flooding. The Wapiti Fire
burn scar near Grandjean, ID, the Durkee Fire burn scar near
Ironside, OR, and the Lava Fire burn scar near Cascade, ID are of
particular concern for flash flooding.
The National Weather Service in Medford has issued a Red Flag
Warning, which is in effect from 1 PM to 9 PM PDT Monday.
* IMPACTS...Abundant lightning on dry fuels resulting in the
potential for numerous new fire starts.
* AFFECTED AREA...In California, all of Fire weather zone 282, and
in Oregon, all of Fire weather zones 617, 620, and 622.
* 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
The National Weather Service in Medford has issued a Red Flag
Warning, which is in effect from 1 PM to 9 PM PDT Monday.
* IMPACTS...Abundant lightning on dry fuels resulting in the
potential for numerous new fire starts.
* AFFECTED AREA...In California, all of Fire weather zones 280,
281, 284, and 285, and in Oregon, all of Fire weather zones
621, 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
The National Weather Service in Medford has issued a Red Flag
Warning, which is in effect from 1 PM to 9 PM PDT Monday.
* IMPACTS...Abundant lightning on dry fuels resulting in the
potential for numerous new fire starts.
* AFFECTED AREA...In California, all of Fire weather zones 280,
281, 284, and 285, and in Oregon, all of Fire weather zones
621, 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
