* WHAT...Sub-freezing temperatures as low as 28 possible.
* WHERE...In Oregon, John Day Basin. In Washington, Kittitas Valley,
Simcoe Highlands, and Yakima Valley.
* WHEN...From this evening through Friday morning.
* IMPACTS...Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing.
* WHAT...Sub-freezing temperatures as low as 28 possible.
* WHERE...In Oregon, John Day Basin. In Washington, Kittitas Valley,
Simcoe Highlands, and Yakima Valley.
* WHEN...From Thursday evening through Friday morning.
* IMPACTS...Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing.
* WHAT...Sneaker waves possible.
* WHERE...North and Central Coast of Oregon, and South
Washington Coast.
* WHEN...Monday.
* IMPACTS...Waves can run up significantly farther on a beach
than normal, including over rocks and jetties. Sneaker waves
can suddenly knock people off of their feet and quickly pull
them into the frigid ocean which may lead to serious injury or
drowning.
* ADDITIONAL DETAILS...A westerly swell of 10-12 ft with a
dominant period of 15-17 seconds will impact the coastline on
Monday and lead to a high sneaker wave threat.
* WHAT...Visibility one quarter mile or less in dense fog.
* WHERE...Lower Columbia River and Cowlitz River Valleys.
* WHEN...Until 11 AM PDT this morning.
* IMPACTS...Low visibility could make driving conditions hazardous.
* WHAT...Sneaker waves possible.
* WHERE...North and Central Coast of Oregon, and South
Washington Coast.
* WHEN...Monday.
* IMPACTS...Waves can run up significantly farther on a beach
than normal, including over rocks and jetties. Sneaker waves can
suddenly knock people off of their feet and quickly pull them
into the frigid ocean which may lead to serious injury or
drowning.
* ADDITIONAL DETAILS...A westerly swell of 10-12 ft with a
dominant period of 15-17 seconds will impact the coastline on
Monday and lead to a high sneaker wave threat.
* WHAT...Sneaker waves possible.
* WHERE...North and Central Coast of Oregon, and South
Washington Coast.
* WHEN...Monday.
* IMPACTS....Sneaker waves can suddenly knock people into the
surf, which may lead to serious injury or drowning. Sneaker
waves can roll large logs on the beach, which can lead to
serious injury or death.
* ADDITIONAL DETAILS...A westerly swell of 11-13 ft with a
dominant period of 14-15 seconds will impact the coastline on
Monday and lead to a high sneaker wave threat.
* WHAT...Visibility one quarter mile or less in areas of dense fog.
Fog will be most prevalent along rivers and lakes.
* WHERE...Willamette Valley, Greater Portland and Vancouver Metro,
Foothills of the Northern and Central Oregon Cascades, North and
Central Coast Range Valleys of Oregon, Lower Columbia River and
Cowlitz River Valleys Including I-5, Willapa and Wahkiakum
Lowlands, and South Washington Cascade Foothills.
* WHEN...Until 10 AM PDT Saturday.
* IMPACTS...Low visibility could make driving conditions hazardous.
...BREEZY WINDS AND LOW HUMIDITY EXPECTED TODAY...
.Winds will increase as a Pacific cold front sweeps across the
Pacific Northwest. Very dry air and breezy winds will be present
across portions of central and eastern Oregon and southeast
Washington ahead of afternoon frontal passage. As a result, this
area will be susceptible to rapid fire spread.
Winds remain breezy across the region, but relative humidities
have begun to increase significantly, bringing the region out of
red flag criteria. Therefore, the red flag warning will be allowed
to expire.
* WHAT...Southwest winds 20 to 30 mph with gusts up to 50 mph
expected.
* WHERE...Winchester, Potlatch, Colfax, Lewiston, Alpowa Summit,
Anatone, Lapwai, Genesee, Pomeroy, Peola, La Crosse, Gifford,
Oakesdale, Rosalia, Uniontown, Lewiston Grade, Moscow, Mountain
Road, Nezperce, Kamiah, Cloverland Road, Pullman, Clarkston,
Soldiers Meadow Road, Plummer, Culdesac, Peck, Tekoa, and
Craigmont.
* WHEN...Until 7 PM PDT this evening.
* IMPACTS...Gusty winds will blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.
...WINDY THIS AFTERNOON AND EVENING...
Temperatures will climb into the upper 60s to mid 70s this
afternoon prior to the arrival of a strong cold front between 3 PM
and 5 PM. The combination of low humidity and gusty southwest
winds ahead of the front followed by a wind shift to the west
(gusting to 50 mph) raises concerns for rapid and erratic
spreading of any new ignitions. Bands of light rain, cooler
temperatures, and rising humidity will follow the passage of the
cold front this evening.
* Affected Area: Fire Weather Zone 709 Lower Palouse -Snake
River (Zone 709).
* Winds: West 20 to 30 mph with gusts up to 50 mph.
* Relative Humidities: 14 to 23 percent.
* Impacts: Risk of rapidly spreading fires.
The National Weather Service in Spokane has issued a
* Dust Advisory for...
Western Latah County in the Panhandle of Idaho...
Northwestern Nez Perce County in north central Idaho...
Southwestern Benewah County in the Panhandle of Idaho...
Northeastern Garfield County in southeastern Washington...
Southeastern Whitman County in eastern Washington...
Northern Asotin County in southeastern Washington...
* Until 315 PM PDT.
* At 221 PM PDT, areas of blowing dust were detected on cams around
Lewiston and Colfax moving east at 15 mph. As the cold front comes
through, winds will increase and additional dust will be possible.
Areas of light rain with the front may reduce the dust potential
over time. a dust channel was 9 miles west of Pullman, moving east
at 20 mph.
HAZARD...Less than one miles visibility with strong winds in
excess of 45 mph.
SOURCE...Doppler radar.
IMPACT...Hazardous travel.
* This includes the following highways...
U.S. Highway 95 in Idaho between mile markers 294 and 381.
U.S. Highway 12 in Idaho between mile markers 0 and 18.
U.S. Highway 12 in Washington between mile markers 399 and 434.
U.S. Highway 195 in Washington between mile markers 0 and 47.
Locations impacted include...
Lewiston, Pullman, Moscow, Clarkston, Lapwai, Colfax, Pomeroy,
Genesee, Troy, Potlatch, Clarkston Heights-Vineland, West
Clarkston-Highland, Asotin, Palouse, Garfield, Albion, Colton,
Uniontown, Onaway, and Farmington.
...BREEZY WINDS AND LOW HUMIDITY EXPECTED TODAY...
.Winds will increase as a Pacific cold front sweeps across the
Pacific Northwest. Very dry air and breezy winds will be present
across portions of central and eastern Oregon and southeast
Washington ahead of afternoon frontal passage. As a result, this
area will be susceptible to rapid fire spread.
* AFFECTED AREA...Fire Weather Zone 693 Southeast Washington
Grande Ronde Valley.
* WINDS...West 15 to 25 mph with gusts up to 30 mph.
* RELATIVE HUMIDITY...As low as 15 percent.
* IMPACTS...Rapid fire spread may occur, particularly in dry
grassy areas.
...WINDY THIS AFTERNOON AND EVENING...
.Temperatures will climb into the upper 60s to mid 70s this
afternoon prior to the arrival of a strong cold front between 3 PM
and 5 PM. The combination of low humidity and gusty southwest
winds ahead of the front followed by a wind shift to the west
(gusting to 50 mph) raises concerns for rapid and erratic
spreading of any new ignitions. Bands of light rain, cooler
temperatures, and rising humidity will follow the passage of the
cold front this evening.
* Affected Area: Fire Weather Zone 708 Washington Palouse (Zone
708) and Fire Weather Zone 709 Lower Palouse
-Snake River (Zone 709).
* Winds: Southwest 20 to 30 mph with gusts up to 50 mph.
* Relative Humidities: As low as 18 to 25 percent in the afternoon
prior to the arrival of light rain between 3 PM and 5 PM.
Recoveries to 70 to 80 percent Friday night.
* Impacts: Risk of rapidly spreading fires.
...BREEZY WINDS AND LOW HUMIDITY EXPECTED TODAY...
.Winds will increase as a Pacific cold front sweeps across the
Pacific Northwest. Very dry air and breezy winds will be present
across portions of central and eastern Oregon and southeast
Washington ahead of afternoon frontal passage. As a result, this
area will be susceptible to rapid fire spread.
* AFFECTED AREA...Fire Weather Zone 693 Southeast Washington
Grande Ronde Valley.
* WINDS...West 15 to 25 mph with gusts up to 40 mph.
* RELATIVE HUMIDITY...As low as 15 percent.
* IMPACTS...Rapid fire spread may occur, particularly in dry
grassy areas.
* WHAT...Visibility between one-quarter and one mile due to blowing
dust expected. Sustained southwest to west winds of 15 to 25 mph
with gusts 30 to 40 mph.
* WHERE...Harrington, Airway Heights, Mansfield, Davenport, Creston,
Fairfield, Rockford, Moses Lake, Coulee City, Odessa, Cheney,
Ephrata, Othello, Quincy, Waterville, Wilbur, and Ritzville.
* WHEN...From 2 PM this afternoon to 7 PM PDT this evening.
* IMPACTS...Hazardous driving conditions due to reduced visibility.
* WHAT...West winds 20 to 30 mph with gusts up to 50 mph expected.
* WHERE...Craigmont, Lewiston Grade, Tekoa, Soldiers Meadow Road,
Alpowa Summit, Cloverland Road, Peck, Pullman, Anatone, Oakesdale,
Potlatch, Moscow, Lewiston, Kamiah, Peola, Nezperce, Clarkston,
Rosalia, Lapwai, Uniontown, Plummer, Genesee, La Crosse, Gifford,
Pomeroy, Colfax, Winchester, and Culdesac.
* WHEN...From 2 PM this afternoon to 7 PM PDT this evening.
* IMPACTS...Gusty winds will blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.
...BREEZY WINDS AND LOW HUMIDITY FRIDAY...
.Winds will increase Friday as a Pacific cold front sweeps across
the PacNW. Very dry air and breezy winds will be present across
portions of central and eastern Oregon and southeast Washington
ahead of afternoon frontal passage. As a result, this area will be
susceptible to rapid fire spread.
* AFFECTED AREA...Fire Weather Zone 693 Southeast Washington
Grande Ronde Valley.
* WINDS...West 15 to 25 mph with gusts up to 45 mph.
* RELATIVE HUMIDITY...As low as 10 percent.
* IMPACTS...Rapid fire spread may occur, particularly in dry
grassy areas.
...BREEZY WINDS AND LOW HUMIDITY FRIDAY...
.Winds will increase Friday as a dry cold front passes through
the area from the northwest. Very dry air will be present ahead
of the frontal passage during the afternoon, with humidities slow
to improve behind the front. As a result, this area will be
susceptible to rapid fire spread.
* AFFECTED AREA...Fire Weather Zone 693 Southeast Washington
Grande Ronde Valley.
* WINDS...Southwest 15 to 25 mph with gusts up to 35 mph.
* RELATIVE HUMIDITY...As low as 15 percent.
* IMPACTS...Rapid fire spread may occur, particularly in dry
grassy areas.
...BREEZY WINDS AND LOW HUMIDITY FRIDAY...
.Winds will increase Friday as a dry cold front passes through the
area from the northwest. Very dry air will be present ahead of the
frontal passage during the afternoon, with humidities slow to
improve behind the front. As a result, this area will be
susceptible to rapid fire spread.
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 6 PM PDT Friday.
* AFFECTED AREA...Fire Weather Zone 693 Southeast Washington
Grande Ronde Valley.
* WINDS...West 10 to 20 mph with gusts up to 30 mph.
* RELATIVE HUMIDITY...As low as 17 percent.
* IMPACTS...Rapid fire spread may occur, particularly in dry
grassy areas.
...WINDY AND DRY FRIDAY...
.A strong cold front will sweep through the region Friday
afternoon. Ahead of front, warm and dry conditions will develop
across southeastern WA and the lower Idaho Panhandle with gusty
southwest winds. Winds will continue to increase with the frontal
passage with a shift to more westerly winds in the late afternoon
and evening. With the frontal passage, there will be a brief
window for light rain showers with little to no rainfall.
The National Weather Service in Spokane has issued a Red Flag
Warning for wind and low relative humidity, which is in effect
from noon to 6 PM PDT Friday.
* Affected Area: Fire Weather Zone 708 Palouse (Zone 708) and
Fire Weather Zone 709 Lower Palouse -Snake River (Zone 709).
* Winds: Southwest to west 20 to 30 mph with gusts up 50 mph.
* Relative Humidities: 18 to 25 percent in the afternoon
increasing 70-80 percent Friday night.
* Impacts: Risk of rapidly spreading fires.
