Southeast Washington and Northeast Oregon Watches and Warnings

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Today's and yesterday's warnings in reverse chronological order.


WWUS86 KPDT 190446
RFWPDT

URGENT - FIRE WEATHER MESSAGE
National Weather Service Pendleton OR
946 PM PDT Fri Aug 18 2017


ORZ610-611-639>641-190600-
/O.EXP.KPDT.FW.W.0019.000000T0000Z-170819T0500Z/
East Slopes of Central Oregon Cascades-Deschutes National Forest -
minus Sisters Ranger District-
East Slopes of the Northern Oregon Cascades-
Central Mountains of Oregon-Lower Columbia Basin of Oregon-
946 PM PDT Fri Aug 18 2017

...RED FLAG WARNING WILL EXPIRE AT 10 PM PDT THIS EVENING FOR VERY HOT AND DRY CONDITIONS FOR FIRE WEATHER ZONES 610, 611, 639, 640, AND 641...

Temperatures have cooled and relative humidities have increased with the loss of daytime heating. Thus the Red Flag Warnings will be allowed to expire.

$$





WWUS86 KPDT 182217
RFWPDT

URGENT - FIRE WEATHER MESSAGE
National Weather Service Pendleton OR
317 PM PDT Fri Aug 18 2017

...DRY AND MARGINALLY UNSTABLE CONDITIONS...LOW RELATIVE HUMIDITY AND BREEZY WINDS IN NORTH CENTRAL AND CENTRAL OREGON TODAY...

A dry and marginally unstable air mass will reside over the east slopes of the Oregon Cascades today. Winds have increased and will remain breezy this afternoon and evening. The combination of dry and marginally unstable conditions along with gusty winds will cause problems for ongoing fires.

ORZ610-611-639>641-190500- /O.CON.KPDT.FW.W.0019.000000T0000Z-170819T0500Z/ East Slopes of Central Oregon Cascades-Deschutes National Forest - minus Sisters Ranger District- East Slopes of the Northern Oregon Cascades- Central Mountains of Oregon-Lower Columbia Basin of Oregon- 317 PM PDT Fri Aug 18 2017

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM PDT THIS EVENING FOR VERY HOT AND DRY CONDITIONS FOR FIRE WEATHER ZONES 610, 611, 639, 640, AND 641...

* AFFECTED AREA...In Oregon...Fire weather zone 610...611...and 639 covering the east slopes of the Oregon Cascades and the Eastern Columbia River Gorge. Oregon Fire Zone 640 covering the Prineville District and the Crooked River Grasslands. Oregon Fire Zones 641 west of Umatilla and Lexington covering the North Pole Fire.

* TIMING...The air mass will remain dry and marginally unstable through the evening hours. Gusty winds and low humidity will occur between 3 PM to 8 PM.

* HAINES...Moderate category of 5.

* HUMIDITY...The afternoon relative humidity will range from 8 to 20 percent with the lowest humidity south of Prineville and Madras.

* WINDS...In the Eastern Columbia River Gorge...west winds 15 to 25 mph gusting to 35 mph. Elsewhere...west to northwest winds 10 to 20 mph gusting to 25-30 mph.

* IMPACTS...Extreme fire behavior can be expected with new or ongoing fires. Outdoor burning is not recommended. Travelers heading to north central and central Oregon for the solar eclipse should be extremely careful and avoid parking in dry grass with a hot exhaust.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior.

&&

$$





WWUS86 KPDT 181658
RFWPDT

URGENT - FIRE WEATHER MESSAGE
National Weather Service Pendleton OR
958 AM PDT Fri Aug 18 2017

...DRY AND MARGINALLY UNSTABLE CONDITIONS...LOW RELATIVE HUMIDITY AND BREEZY WINDS IN NORTH CENTRAL AND CENTRAL OREGON TODAY...

A dry and marginally unstable air mass will reside over the east slopes of the Oregon Cascades today. Winds will increase and become breezy this afternoon and evening. The combination of dry and marginally unstable conditions along with gusty winds will cause problems for ongoing fires today.

ORZ610-611-639>641-190100- /O.NEW.KPDT.FW.W.0019.170818T1658Z-170819T0500Z/ East Slopes of Central Oregon Cascades-Deschutes National Forest - minus Sisters Ranger District- East Slopes of the Northern Oregon Cascades- Central Mountains of Oregon-Lower Columbia Basin of Oregon- 958 AM PDT Fri Aug 18 2017

...RED FLAG WARNING IN EFFECT UNTIL 10 PM PDT THIS EVENING FOR VERY HOT AND DRY CONDITIONS FOR FIRE WEATHER ZONES 610, 611, 639, 640, AND 641...

The National Weather Service in Pendleton has issued a Red Flag Warning, which is in effect until 10 PM PDT this evening.

* AFFECTED AREA...In Oregon...Fire weather zone 610...611...and 639 covering the east slopes of the Oregon Cascades and the Eastern Columbia River Gorge. Oregon Fire Zone 640 covering the Prineville District and the Crooked River Grasslands. Oregon Fire Zones 641 west of Umatilla and Lexington covering the North Pole Fire. * TIMING...The air mass will remain dry and marginally unstable through the evening hours. The winds will increase this afternoon and gusty winds will occur between 3 PM to 8 PM.

* HAINES...Moderate category of 5.

* HUMIDITY...The afternoon relative humidity will range from 8 to 20 percent with the lowest humidity south of Prineville and Madras.

* WINDS...In the Eastern Columbia River Gorge...west winds will increase to 15 to 25 mph gusting to 35 mph. Elsewhere...west to northwest winds will increase to 8 to 15 mph gusting to 25 mph.

* IMPACTS...Extreme fire behavior can be expected with new or ongoing fires. Outdoor burning is not recommended. Travelers heading to north central and central Oregon for the solar eclipse should be extremely careful and avoid parking in dry grass with a hot exhaust.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior.

&&

$$