* WHAT...For the Dense Fog Advisory, visibility one quarter mile or
less in dense fog. For the Air Stagnation Advisory, poor air
quality will continue. This is due to an inversion and stagnant
air conditions near the surface that will continue to trap
pollutants.
* WHERE...For the Dense Fog Advisory, Central Douglas County,
Josephine County, and Jackson County. For the Air Stagnation
Advisory, Central Douglas County, Eastern Curry County and
Josephine County, and Jackson County. This includes the cities of
Roseburg, Grants Pass, Cave Junction and Medford.
* WHEN...For the Dense Fog Advisory, until 10 AM PST this morning.
For the Air Stagnation Advisory, until noon PST Friday.
* IMPACTS...Low visibility could make driving conditions hazardous.
Poor air quality may cause issues for people with respiratory
problems.
* ADDITIONAL DETAILS...Mixing and ventilation should be better at
the south end of the Rogue Valley from around Talent to Ashland
due to stronger SE winds.
* WHAT...Poor air quality will continue. This is due to an inversion
and stagnant air conditions near the surface that will continue to
trap pollutants.
* WHERE...Eastern Douglas County Foothills, including Steamboat.
* WHEN...Until noon PST Friday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems.
* WHAT...For the Dense Fog Advisory, visibility one quarter mile or
less in dense fog. For the Air Stagnation Advisory, poor air
quality will continue. This is due to an inversion and stagnant
air conditions near the surface that will continue to trap
pollutants.
* WHERE...For the Dense Fog Advisory, Central Douglas County,
Josephine County, and Jackson County. For the Air Stagnation
Advisory, Central Douglas County, Eastern Curry County and
Josephine County, and Jackson County. This includes the cities of
Roseburg, Grants Pass, Cave Junction and Medford.
* WHEN...For the Dense Fog Advisory, until 10 AM PST this morning.
For the Air Stagnation Advisory, until noon PST Friday.
* IMPACTS...Low visibility could make driving conditions hazardous.
Poor air quality may cause issues for people with respiratory
problems.
* ADDITIONAL DETAILS...Mixing and ventilation should be better at
the south end of the Rogue Valley from around Talent to Ashland
due to stronger SE winds.
Patchy dense freezing fog has developed along the I-84 corridor,
primarily over Cabbage Hill between mileposts 220 and 240 near
Meacham. Fog may expand its footprint overnight and into the
morning hours on Thursday. Motorists are urged to use caution as
visibilities may vary or change drastically , and roadways may be
slick due to ice depositing on the road surface.
* WHAT...Visibility one quarter mile or less in freezing fog.
* WHERE...Central Oregon and North Central Oregon.
* WHEN...Until 11 AM PST this morning.
* IMPACTS...Low visibility could make driving conditions hazardous.
* WHAT...An extended period of stagnant air, with light winds and
little vertical mixing. This is due to an inversion near the
surface that will continue to trap pollutants.
* WHERE...Portions of southwest and west central Idaho and northeast
and southeast Oregon.
* WHEN...Until 11 AM MST /10 AM PST/ Friday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems.
* WHAT...Strong valley inversions will result in weak winds, poor
mixing and ventilation. This will result in stagnant air
conditions that will trap pollutants near the surface.
* WHERE...Lake County and eastern Klamath County, and Klamath Basin.
This includes the cities of Klamath Falls and Lakeview.
* WHEN...Until noon PST Friday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems.
* WHAT...Strong valley inversions will result in weak winds, poor
mixing and ventilation. This will result in stagnant air
conditions that will trap pollutants near the surface.
* WHERE...Central Douglas County, Eastern Curry County and Josephine
County, Eastern Douglas County Foothills, and Jackson County. This
includes the cities of Roseburg, Grants Pass, Cave Junction and
Medford.
* WHEN...Until noon PST Friday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems.
* ADDITIONAL DETAILS...Mixing and ventilation should be better at
the south end of the Rogue Valley from around Talent to Ashland
due to stronger SE winds.
* WHAT...Strong valley inversions will result in weak winds, poor
mixing and ventilation. This will result in stagnant air
conditions that will trap pollutants near the surface.
* WHERE...Lake County and eastern Klamath County, and Klamath Basin.
This includes the cities of Klamath Falls and Lakeview.
* WHEN...Until noon PST Friday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems.
* WHAT...Strong valley inversions will result in weak winds, poor
mixing and ventilation. This will result in stagnant air
conditions that will trap pollutants near the surface.
* WHERE...Central Douglas County, Eastern Curry County and Josephine
County, Eastern Douglas County Foothills, and Jackson County. This
includes the cities of Roseburg, Grants Pass, Cave Junction and
Medford.
* WHEN...Until noon PST Friday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems.
* ADDITIONAL DETAILS...Mixing and ventilation should be better at
the south end of the Rogue Valley from around Talent to Ashland
due to stronger SE winds.
* WHAT...An extended period of stagnant air, with light winds and
little vertical mixing. This is due to an inversion near the
surface that will continue to trap pollutants.
* WHERE...Portions of southwest and west central Idaho and northeast
and southeast Oregon.
* WHEN...Until 11 AM MST /10 AM PST/ Friday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems.
* WHAT...Strong valley inversions will result in weak winds, poor
mixing and ventilation. This will result in stagnant air
conditions that will trap pollutants near the surface.
* WHERE...Lake County and eastern Klamath County, and Klamath Basin.
This includes the cities of Klamath Falls and Lakeview.
* WHEN...Until noon PST Friday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems.
* WHAT...Strong valley inversions will result in weak winds, poor
mixing and ventilation. This will result in stagnant air
conditions that will trap pollutants near the surface.
* WHERE...Central Douglas County, Eastern Curry County and Josephine
County, Eastern Douglas County Foothills, and Jackson County. This
includes the cities of Roseburg, Grants Pass, Cave Junction and
Medford.
* WHEN...Until noon PST Friday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems.
* ADDITIONAL DETAILS...Mixing and ventilation should be better at
the south end of the Rogue Valley from around Talent to Ashland
due to stronger SE winds.
...The Flood Warning is extended for the following rivers in
Oregon...
Coquille River at Coquille affecting Coos County.
For the Coquille River...including Coquille...Minor flooding is
occurring.
* WHAT...Minor flooding is occurring. The river is forecast to crest
at 22 feet around noon today.
* WHERE...Coquille River at Coquille.
* WHEN...Until early Tuesday afternoon.
* IMPACTS...At 21.0 feet, The Coquille River is at flood stage.
Expect flooding of farmland and low-lying areas throughout the
flood plain along the Coquille River.
* ADDITIONAL DETAILS...
- At 1:45 PM PST Monday the stage was 21.4 feet.
- Bankfull stage is 20.0 feet.
- Recent Activity...The maximum river stage in the 24 hours
ending at 1:45 PM PST Monday was 22.5 feet.
- Forecast...The river will oscillate around flood stage with a
maximum value of 21.4 feet late this afternoon.
- Flood stage is 21.0 feet.
- Flood History...This crest compares to a previous crest of
21.4 feet on 02/27/1957.
- http://www.weather.gov/safety/flood
* WHAT...Strong valley inversions will result in weak winds, poor
mixing and ventilation. This will result in stagnant air
conditions that will trap pollutants near the surface.
* WHERE...Lake County and eastern Klamath County, and Klamath Basin.
This includes the cities of Klamath Falls and Lakeview.
* WHEN...From 10 AM Tuesday to noon PST Friday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems.
* WHAT...Strong valley inversions will result in weak winds, poor
mixing and ventilation. This will result in stagnant air
conditions that will trap pollutants near the surface.
* WHERE...Central Douglas County, Eastern Curry County and Josephine
County, Eastern Douglas County Foothills, and Jackson County. This
includes the cities of Roseburg, Grants Pass, Cave Junction and
Medford.
* WHEN...From 10 AM Tuesday to noon PST Friday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems.
* ADDITIONAL DETAILS...Mixing and ventilation should be better at
the south end of the Rogue Valley from around Talent to Ashland
due to stronger SE winds.
* WHAT...An extended period of stagnant air, with light winds and
little vertical mixing. This is due to an inversion near the
surface that will continue to trap pollutants.
* WHERE...Portions of southwest and west central Idaho and northeast
and southeast Oregon.
* WHEN...From 11 PM MST /10 PM PST/ this evening to 11 AM MST /10 AM
PST/ Friday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems.
* WHAT...Visibility less than one mile in dense fog.
* WHERE...Foothills of the Blue Mountains of Oregon, and North
Central Oregon.
* WHEN...Until 1 PM PST this afternoon.
* IMPACTS...Low visibility could make driving conditions hazardous.
...The Flood Warning continues for the following rivers in Oregon...
Coquille River at Coquille affecting Coos County.
For the Coquille River...including Coquille...Minor flooding is
forecast.
* WHAT...Minor flooding is occurring and minor flooding is forecast.
* WHERE...Coquille River at Coquille.
* WHEN...Until late tonight.
* IMPACTS...At 23.0 feet, Some farm buildings may be threatened and
roads covered in low areas by rising water. Expect widespread
flooding throughout the Coquille River floodplain.
* ADDITIONAL DETAILS...
- At 4:45 AM PST Monday the stage was 22.0 feet.
- Bankfull stage is 20.0 feet.
- Recent Activity...The maximum river stage in the 24 hours
ending at 4:45 AM PST Monday was 22.5 feet.
- Forecast...The river will continue to gradually fall today,
then go below flood stage late tonight.
- Flood stage is 21.0 feet.
- Flood History...This crest compares to a previous crest of
22.4 feet on 02/19/1983.
- http://www.weather.gov/safety/flood
* WHAT...A moderate risk of sneaker waves is expected.
* WHERE...Beaches along Curry, Coos, and Douglas Counties. The
highest risk will be at west-facing beaches.
* WHEN...Through Tuesday morning.
* IMPACTS...Sneaker waves can run up significantly farther on
beaches than normal, including over rocks and jetties. These
waves can suddenly knock people off of their feet and quickly
pull them into the cold ocean waters, resulting in serious
injury or death. Waves may also lift driftwood logs, trapping
anyone caught underneath.
* View the hazard area in detail at
https://www.wrh.noaa.gov/map/?wfo=mfr
