Alert archive / Oregon / Red Flag Warnings in 2021

Red Flag Warning 10, NWS Pendleton, OR

July 29, 2021

NWS Pendleton, OR issued this red flag warning at Jul 29, 2021, 2:36 PM PDT. It took effect at Jul 30, 2021, 2:00 PM PDT. It was in force for 34 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 29, 2021, 2:36 PM PDT (21:36 UTC)
In effect from
Jul 30, 2021, 2:00 PM PDT
Expired
Aug 1, 2021, 12:00 AM PDT
In force
34 hr
Issued by
NWS Pendleton, OR

The text

As transmitted.

210 
WWUS86 KPDT 292136
RFWPDT

URGENT - FIRE WEATHER MESSAGE
National Weather Service Pendleton OR
236 PM PDT Thu Jul 29 2021

...THUNDERSTORMS WITH ABUNDANT LIGHTNING POSSIBLE IN CENTRAL
OREGON THROUGH THIS EVENING AND AGAIN FRIDAY...

...MORE ABUNDANT LIGHT POSSIBLE SATURDAY INCLUDING IN EASTERN
OREGON

.Isolated to scattered thunderstorms will impact Central Oregon
through this evening and gain on Friday. Another surge of moisture
over the weekend will then produce more widespread thunderstorms
along with the good potential for wetting rains.

ORZ610-611-300600-
/O.UPG.KPDT.FW.A.0009.210730T2100Z-210731T0600Z/
/O.NEW.KPDT.FW.W.0010.210730T2100Z-210731T0600Z/
/O.NEW.KPDT.FW.A.0010.210731T1900Z-210801T0700Z/
/O.CON.KPDT.FW.W.0009.000000T0000Z-210730T0600Z/
East Slopes of Central Oregon Cascades-Deschutes National Forest -
minus Sisters Ranger District-
236 PM PDT Thu Jul 29 2021

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 11 PM PDT THIS
EVENING FOR ABUNDANT LIGHTNING FOR FIRE WEATHER ZONES OR610 AND
OR611...

...RED FLAG WARNING IN EFFECT FROM 2 PM TO 11 PM PDT FRIDAY FOR
ABUNDANT LIGHTNING FOR FIRE WEATHER ZONES OR610 AND OR611...

...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH
SATURDAY EVENING FOR ABUNDANT LIGHTNING FOR FIRE WEATHER ZONES
OR610 AND OR611...

The National Weather Service in Pendleton has issued a Red Flag
Warning for abundant lightning, which is in effect from 2 PM to
11 PM PDT Friday. A Fire Weather Watch has also been issued. This
Fire Weather Watch for abundant lightning is in effect from
Saturday afternoon through Saturday evening. The Fire Weather
Watch is no longer in effect.

* AFFECTED AREA...Fire Weather Zones 610 East Slopes of Central 
  Oregon Cascades and 611 Deschutes National Forest  -minus 
  Sisters Ranger District.

* THUNDERSTORMS...Isolated to scattered storms will be possible
  with a LAL 3. 

* OUTFLOW WINDS...Gusty outflow winds are possible in and near 
  thunderstorms.

* IMPACTS...The potential for abundant lightning combined with 
  very dry fuels may lead to increased fire starts. Breezy winds 
  may lead to fire spread of any new or existing fires.

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.

A Fire Weather Watch means that critical fire weather conditions
are forecast to occur. Listen for later forecasts and possible
Red Flag Warnings.

&&

$$

ORZ640-300600-
/O.NEW.KPDT.FW.A.0010.210731T1900Z-210801T0700Z/
/O.CON.KPDT.FW.W.0009.000000T0000Z-210730T0600Z/
Central Mountains of Oregon-
236 PM PDT Thu Jul 29 2021

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 11 PM PDT THIS
EVENING FOR ABUNDANT LIGHTNING FOR FIRE WEATHER ZONE OR640...

...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH
SATURDAY EVENING FOR ABUNDANT LIGHTNING FOR FIRE WEATHER ZONE
OR640...

The National Weather Service in Pendleton has issued a Fire
Weather Watch for abundant lightning, which is in effect from
Saturday afternoon through Saturday evening.

* AFFECTED AREA...Fire Weather Zone 640 Central Mountains of 
  Oregon.

* THUNDERSTORMS...Isolated to scattered storms will be possible
  with a LAL 3 through this evening.

* OUTFLOW WINDS...Gusty outflow winds are possible in and near 
  thunderstorms.

* IMPACTS...The potential for abundant lightning combined with 
  very dry fuels may lead to increased fire starts. Breezy winds 
  may lead to fire spread of any new or existing fires.

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.

A Fire Weather Watch means that critical fire weather conditions
are forecast to occur. Listen for later forecasts and possible
Red Flag Warnings.

&&

$$

ORZ642>645-WAZ643-645-300600-
/O.NEW.KPDT.FW.A.0010.210731T1900Z-210801T0700Z/
Southern Blue and Strawberry Mountains-
Northern Blue Mountains of Oregon-Central Blue Mountains-
Wallowa District-Blue Mountains of Washington-Asotin County-
236 PM PDT Thu Jul 29 2021

...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH
SATURDAY EVENING FOR ABUNDANT LIGHTNING FOR FIRE WEATHER ZONES
OR642, OR643, OR644, OR645, WA643, AND WA645...

The National Weather Service in Pendleton has issued a Fire
Weather Watch for abundant lightning, which is in effect from
Saturday afternoon through Saturday evening.

* AFFECTED AREA...Fire Weather Zones 642 Southern Blue and 
  Strawberry Mountains, 643 Northern Blue Mountains of Oregon, 
  643 Blue Mountains of Washington, 644 Central Blue Mountains, 
  645 Wallowa District and 645 Asotin County.

* IMPACTS...The potential for abundant lightning combined with 
  very dry fuels may lead to increased fire starts. Breezy winds 
  may lead to fire spread of any new or existing fires.

* THUNDERSTORMS...Scattered storms will be possible with a LAL 3
  to 4 on Saturday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Fire Weather Watch means that critical fire weather conditions
are forecast to occur. Listen for later forecasts and possible
Red Flag Warnings.

&&

$$
6 follow-up statements
072 
WWUS86 KPDT 300543
RFWPDT

URGENT - FIRE WEATHER MESSAGE
National Weather Service Pendleton OR
1043 PM PDT Thu Jul 29 2021

...THUNDERSTORMS WITH ABUNDANT LIGHTNING POSSIBLE IN CENTRAL
OREGON FRIDAY AFTERNOON AND EVENING...

...MORE ABUNDANT LIGHTNING POSSIBLE SATURDAY INCLUDING IN EASTERN
OREGON...

.Thunderstorm threat has diminished into showers tonight across
Central Oregon, though a couple of lightning strikes occurring 
can not be ruled out tonight. Friday, isolated to scattered 
thunderstorms will redevelop in the afternoon and evening across 
Central Oregon. Another surge of moisture over the weekend will 
then produce more widespread thunderstorms along with the good 
potential for wetting rains.

ORZ610-611-301500-
/O.EXP.KPDT.FW.W.0009.000000T0000Z-210730T0600Z/
/O.CON.KPDT.FW.W.0010.210730T2100Z-210731T0600Z/
/O.CON.KPDT.FW.A.0010.210731T1900Z-210801T0700Z/
East Slopes of Central Oregon Cascades-Deschutes National Forest -
minus Sisters Ranger District-
1043 PM PDT Thu Jul 29 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM 2 PM TO 11 PM PDT
FRIDAY FOR ABUNDANT LIGHTNING FOR FIRE WEATHER ZONES OR610 AND
OR611...
...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY AFTERNOON
THROUGH SATURDAY EVENING FOR ABUNDANT LIGHTNING FOR FIRE WEATHER
ZONES OR610 AND OR611...
...RED FLAG WARNING WILL EXPIRE AT 11 PM PDT THIS EVENING FOR
ABUNDANT LIGHTNING FOR FIRE WEATHER ZONES OR610 AND OR611...

* AFFECTED AREA...Fire Weather Zones 610 East Slopes of Central 
  Oregon Cascades and 611 Deschutes National Forest  -minus 
  Sisters Ranger District.

* THUNDERSTORMS...Isolated to scattered storms will be possible 
  with a LAL 3.

* OUTFLOW WINDS...Gusty outflow winds are possible in and near 
  thunderstorms.

* IMPACTS...The potential for abundant lightning combined with 
  very dry fuels may lead to increased fire starts. Breezy winds 
  may lead to fire spread of any new or existing fires.

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.

A Fire Weather Watch means that critical fire weather conditions
are forecast to occur. Listen for later forecasts and possible
Red Flag Warnings.

&&

$$

ORZ640-301500-
/O.EXP.KPDT.FW.W.0009.000000T0000Z-210730T0600Z/
/O.CON.KPDT.FW.A.0010.210731T1900Z-210801T0700Z/
Central Mountains of Oregon-
1043 PM PDT Thu Jul 29 2021

...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY AFTERNOON
THROUGH SATURDAY EVENING FOR ABUNDANT LIGHTNING FOR FIRE WEATHER
ZONE OR640...
...RED FLAG WARNING WILL EXPIRE AT 11 PM PDT THIS EVENING FOR
ABUNDANT LIGHTNING FOR FIRE WEATHER ZONE OR640...

* AFFECTED AREA...Fire Weather Zone 640 Central Mountains of 
  Oregon.

* THUNDERSTORMS...Isolated to scattered storms will be possible
  with a LAL 3.

* OUTFLOW WINDS...Gusty outflow winds are possible in and near 
  thunderstorms.

* IMPACTS...The potential for abundant lightning combined with 
  very dry fuels may lead to increased fire starts. Breezy winds 
  may lead to fire spread of any new or existing fires.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Fire Weather Watch means that critical fire weather conditions
are forecast to occur. Listen for later forecasts and possible
Red Flag Warnings.

&&

$$

ORZ642>645-WAZ643-645-301500-
/O.CON.KPDT.FW.A.0010.210731T1900Z-210801T0700Z/
Southern Blue and Strawberry Mountains-
Northern Blue Mountains of Oregon-Central Blue Mountains-
Wallowa District-Blue Mountains of Washington-Asotin County-
1043 PM PDT Thu Jul 29 2021

...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY AFTERNOON
THROUGH SATURDAY EVENING FOR ABUNDANT LIGHTNING FOR FIRE WEATHER
ZONES OR642, OR643, OR644, OR645, WA643, AND WA645...

* AFFECTED AREA...Fire Weather Zones 642 Southern Blue and 
  Strawberry Mountains, 643 Northern Blue Mountains of Oregon, 
  643 Blue Mountains of Washington, 644 Central Blue Mountains, 
  645 Wallowa District and 645 Asotin County.

* IMPACTS...The potential for abundant lightning combined with 
  very dry fuels may lead to increased fire starts. Breezy winds 
  may lead to fire spread of any new or existing fires.

* THUNDERSTORMS...Scattered storms will be possible with a LAL 3 
  to 4 on Saturday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Fire Weather Watch means that critical fire weather conditions
are forecast to occur. Listen for later forecasts and possible
Red Flag Warnings.

&&

$$
054 
WWUS86 KPDT 301215
RFWPDT

URGENT - FIRE WEATHER MESSAGE
National Weather Service Pendleton OR
515 AM PDT Fri Jul 30 2021

...THUNDERSTORMS WITH ABUNDANT LIGHTNING POSSIBLE IN CENTRAL
OREGON FRIDAY AFTERNOON AND EVENING...

...MORE ABUNDANT LIGHTNING POSSIBLE SATURDAY INCLUDING IN EASTERN
OREGON...

.Isolated to scattered thunderstorms is expected to develop in 
the afternoon and evening across Central Oregon. Another surge of 
moisture over the weekend is forecast to produce more widespread 
thunderstorms along with the potential for wetting rains.

ORZ610-611-302345-
/O.CON.KPDT.FW.W.0010.210730T2100Z-210731T0600Z/
/O.CON.KPDT.FW.A.0010.210731T1900Z-210801T0700Z/
East Slopes of Central Oregon Cascades-Deschutes National Forest -
minus Sisters Ranger District-
515 AM PDT Fri Jul 30 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO
11 PM PDT THIS EVENING FOR ABUNDANT LIGHTNING FOR FIRE WEATHER 
ZONES OR610 AND OR611... 
...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY AFTERNOON 
THROUGH SATURDAY EVENING FOR ABUNDANT LIGHTNING FOR FIRE WEATHER 
ZONES OR610 AND OR611...

* AFFECTED AREA...Fire Weather Zones 610 East Slopes of Central 
  Oregon Cascades and 611 Deschutes National Forest  -minus 
  Sisters Ranger District.

* THUNDERSTORMS...Isolated to scattered storms will be possible 
  with a LAL 3.

* OUTFLOW WINDS...Gusty outflow winds are possible in and near 
  thunderstorms.

* IMPACTS...The potential for abundant lightning combined with 
  very dry fuels may lead to increased fire starts. Breezy winds 
  may lead to fire spread of any new or existing fires.

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.

A Fire Weather Watch means that critical fire weather conditions
are forecast to occur. Listen for later forecasts and possible
Red Flag Warnings.

&&

$$

ORZ640-642>645-WAZ643-645-302345-
/O.CON.KPDT.FW.A.0010.210731T1900Z-210801T0700Z/
Central Mountains of Oregon-
Southern Blue and Strawberry Mountains-
Northern Blue Mountains of Oregon-Central Blue Mountains-
Wallowa District-Blue Mountains of Washington-Asotin County-
515 AM PDT Fri Jul 30 2021

...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY AFTERNOON
THROUGH SATURDAY EVENING FOR ABUNDANT LIGHTNING FOR FIRE WEATHER 
ZONES OR640, OR642, OR643, OR644, OR645, WA643, AND WA645...

* AFFECTED AREA...Fire Weather Zones 640 Central Mountains of 
  Oregon, 642 Southern Blue and Strawberry Mountains, 643 
  Northern Blue Mountains of Oregon, 643 Blue Mountains of 
  Washington, 644 Central Blue Mountains, 645 Wallowa District 
  and 645 Asotin County.

* THUNDERSTORMS...Isolated to scattered storms will be possible 
  with a LAL 3.

* OUTFLOW WINDS...Gusty outflow winds are possible in and near 
  thunderstorms.

* IMPACTS...The potential for abundant lightning combined with 
  very dry fuels may lead to increased fire starts. Breezy winds 
  may lead to fire spread of any new or existing fires.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Fire Weather Watch means that critical fire weather conditions
are forecast to occur. Listen for later forecasts and possible
Red Flag Warnings.

&&

$$
897 
WWUS86 KPDT 302141
RFWPDT

URGENT - FIRE WEATHER MESSAGE
National Weather Service Pendleton OR
241 PM PDT Fri Jul 30 2021

...THUNDERSTORMS WITH ABUNDANT LIGHTNING POSSIBLE IN CENTRAL
OREGON THROUGH THIS EVENING AND AGAIN SATURDAY...

...MORE ABUNDANT LIGHTNING POSSIBLE SATURDAY INCLUDING IN EASTERN
OREGON...

.Isolated to scattered thunderstorms through this evening in 
Central Oregon. Another surge of moisture over the weekend is 
forecast to produce more widespread thunderstorms along with the 
potential for wetting rains.

ORZ610-611-311400-
/O.CAN.KPDT.FW.A.0010.210731T1900Z-210801T0700Z/
/O.EXT.KPDT.FW.W.0010.000000T0000Z-210801T0700Z/
East Slopes of Central Oregon Cascades-Deschutes National Forest -
minus Sisters Ranger District-
241 PM PDT Fri Jul 30 2021

...RED FLAG WARNING NOW IN EFFECT UNTIL MIDNIGHT PDT SATURDAY
NIGHT FOR ABUNDANT LIGHTNING FOR FIRE WEATHER ZONES OR610 AND
OR611...
...FIRE WEATHER WATCH IS CANCELLED FOR ABUNDANT LIGHTNING FOR
FIRE WEATHER ZONES OR610 AND OR611...

The National Weather Service in Pendleton has cancelled the Fire
Weather Watch.

* AFFECTED AREA...Fire Weather Zones 610 East Slopes of Central 
  Oregon Cascades and 611 Deschutes National Forest  -minus 
  Sisters Ranger District.

* THUNDERSTORMS...Isolated to scattered storms will be possible 
  with a LAL 3.

* OUTFLOW WINDS...Gusty outflow winds are possible in and near 
  thunderstorms.

* IMPACTS...The potential for abundant lightning combined with 
  very dry fuels may lead to increased fire starts. Breezy winds 
  may lead to fire spread of any new or existing fires.

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.

&&

$$

ORZ640-642>645-WAZ643-645-311400-
/O.UPG.KPDT.FW.A.0010.210731T1900Z-210801T0700Z/
/O.NEW.KPDT.FW.W.0011.210731T1900Z-210801T0700Z/
Central Mountains of Oregon-
Southern Blue and Strawberry Mountains-
Northern Blue Mountains of Oregon-Central Blue Mountains-
Wallowa District-Blue Mountains of Washington-Asotin County-
241 PM PDT Fri Jul 30 2021

...RED FLAG WARNING IN EFFECT FROM NOON SATURDAY TO MIDNIGHT PDT
SATURDAY NIGHT FOR ABUNDANT LIGHTNING FOR FIRE WEATHER ZONES
OR640, OR642, OR643, OR644, OR645, WA643, AND WA645...

The National Weather Service in Pendleton has issued a Red Flag
Warning for abundant lightning, which is in effect from noon
Saturday to midnight PDT Saturday night. The Fire Weather Watch
is no longer in effect.

* AFFECTED AREA...Fire Weather Zones 640 Central Mountains of 
  Oregon, 642 Southern Blue and Strawberry Mountains, 643 
  Northern Blue Mountains of Oregon, 643 Blue Mountains of 
  Washington, 644 Central Blue Mountains, 645 Wallowa District 
  and 645 Asotin County.

* THUNDERSTORMS...Isolated to scattered storms will be possible
  with a LAL 3 to 4.

* OUTFLOW WINDS...Gusty outflow winds are possible in and near 
  thunderstorms.

* IMPACTS...The potential for abundant lightning combined with 
  very dry fuels may lead to increased fire starts. Breezy winds 
  may lead to fire spread of any new or existing fires.

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.

&&

$$
360 
WWUS86 KPDT 311201
RFWPDT

URGENT - FIRE WEATHER MESSAGE
National Weather Service Pendleton OR
501 AM PDT Sat Jul 31 2021

...THUNDERSTORMS WITH ABUNDANT LIGHTNING IN CENTRAL OREGON AND
EASTERN OREGON TODAY AND TONIGHT...

.Thunderstorms are expected to develop today and expand in 
coverage this afternoon and evening. Dry fuels and abundant 
lighting will create critical fire conditions. Also some storms 
may become strong along with producing brief heavy rain that could
cause water to pond on roadways and fill streams with rapid 
running water.

ORZ610-611-312345-
/O.CON.KPDT.FW.W.0010.000000T0000Z-210801T0700Z/
East Slopes of Central Oregon Cascades-Deschutes National Forest -
minus Sisters Ranger District-
501 AM PDT Sat Jul 31 2021

...RED FLAG WARNING REMAINS IN EFFECT UNTIL MIDNIGHT PDT TONIGHT
FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES
OR610 AND OR611...

* AFFECTED AREA...Fire Weather Zones 610 East Slopes of Central 
  Oregon Cascades and 611 Deschutes National Forest  -minus 
  Sisters Ranger District.

* THUNDERSTORMS...Isolated to scattered storms will be possible 
  with a LAL 3.

* OUTFLOW WINDS...Gusty outflow winds are possible in and near 
  thunderstorms.

* IMPACTS...The potential for abundant lightning combined with 
  very dry fuels may lead to increased fire starts. Breezy winds 
  may lead to fire spread of any new or existing fires.

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.

&&

$$

ORZ640-642>645-WAZ643-645-312345-
/O.CON.KPDT.FW.W.0011.210731T1900Z-210801T0700Z/
Central Mountains of Oregon-
Southern Blue and Strawberry Mountains-
Northern Blue Mountains of Oregon-Central Blue Mountains-
Wallowa District-Blue Mountains of Washington-Asotin County-
501 AM PDT Sat Jul 31 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO MIDNIGHT
PDT TONIGHT FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER
ZONES OR640, OR642, OR643, OR644, OR645, WA643, AND WA645...

* AFFECTED AREA...Fire Weather Zones 640 Central Mountains of 
  Oregon, 642 Southern Blue and Strawberry Mountains, 643 
  Northern Blue Mountains of Oregon, 643 Blue Mountains of 
  Washington, 644 Central Blue Mountains, 645 Wallowa District 
  and 645 Asotin County.

* THUNDERSTORMS...Isolated to scattered storms will be possible 
  with a LAL 3 to 4.

* OUTFLOW WINDS...Gusty outflow winds are possible in and near 
  thunderstorms.

* IMPACTS...The potential for abundant lightning combined with 
  very dry fuels may lead to increased fire starts. Breezy winds 
  may lead to fire spread of any new or existing fires.

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.

&&

$$
334 
WWUS86 KPDT 312134
RFWPDT

URGENT - FIRE WEATHER MESSAGE
National Weather Service Pendleton OR
234 PM PDT Sat Jul 31 2021

...THUNDERSTORMS WITH ABUNDANT LIGHTNING IN CENTRAL OREGON AND
EASTERN OREGON THROUGH EARLY TONIGHT...

.Thunderstorms are developing and expanding in coverage this 
afternoon and evening. Dry fuels and abundant lighting will create
critical fire conditions. Also some storms may become strong 
along with producing brief heavy rain that could cause water to 
pond on roadways and fill streams with rapid running water.

ORZ610-611-010700-
/O.CON.KPDT.FW.W.0010.000000T0000Z-210801T0700Z/
East Slopes of Central Oregon Cascades-Deschutes National Forest -
minus Sisters Ranger District-
234 PM PDT Sat Jul 31 2021

...RED FLAG WARNING REMAINS IN EFFECT UNTIL MIDNIGHT PDT TONIGHT
FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES
OR610 AND OR611...

* AFFECTED AREA...Fire Weather Zones 610 East Slopes of Central 
  Oregon Cascades and 611 Deschutes National Forest  -minus 
  Sisters Ranger District.

* THUNDERSTORMS...Isolated to scattered storms will be possible 
  with a LAL 3.

* OUTFLOW WINDS...Gusty outflow winds are possible in and near 
  thunderstorms.

* IMPACTS...The potential for abundant lightning combined with 
  very dry fuels may lead to increased fire starts. Breezy winds 
  may lead to fire spread of any new or existing fires.

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.

&&

$$

ORZ640-642>645-WAZ643-645-010700-
/O.CON.KPDT.FW.W.0011.000000T0000Z-210801T0700Z/
Central Mountains of Oregon-
Southern Blue and Strawberry Mountains-
Northern Blue Mountains of Oregon-Central Blue Mountains-
Wallowa District-Blue Mountains of Washington-Asotin County-
234 PM PDT Sat Jul 31 2021

...RED FLAG WARNING REMAINS IN EFFECT UNTIL MIDNIGHT PDT TONIGHT
FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES OR640,
OR642, OR643, OR644, OR645, WA643, AND WA645...

* AFFECTED AREA...Fire Weather Zones 640 Central Mountains of 
  Oregon, 642 Southern Blue and Strawberry Mountains, 643 
  Northern Blue Mountains of Oregon, 643 Blue Mountains of 
  Washington, 644 Central Blue Mountains, 645 Wallowa District 
  and 645 Asotin County.

* THUNDERSTORMS...Isolated to scattered storms will be possible 
  with a LAL 3 to 4.

* OUTFLOW WINDS...Gusty outflow winds are possible in and near 
  thunderstorms.

* IMPACTS...The potential for abundant lightning combined with 
  very dry fuels may lead to increased fire starts. Breezy winds 
  may lead to fire spread of any new or existing fires.

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.

&&

$$
696 
WWUS86 KPDT 010659
RFWPDT

URGENT - FIRE WEATHER MESSAGE
National Weather Service Pendleton OR
1159 PM PDT Sat Jul 31 2021

ORZ610-611-010800-
/O.EXP.KPDT.FW.W.0010.000000T0000Z-210801T0700Z/
East Slopes of Central Oregon Cascades-Deschutes National Forest -
minus Sisters Ranger District-
1159 PM PDT Sat Jul 31 2021

...RED FLAG WARNING WILL EXPIRE AT MIDNIGHT PDT TONIGHT FOR FIRE 
WEATHER ZONES OR610 AND OR611...

The threat for abundant lightning has ended.

$$

ORZ640-642>645-WAZ643-645-010800-
/O.EXP.KPDT.FW.W.0011.000000T0000Z-210801T0700Z/
Central Mountains of Oregon-
Southern Blue and Strawberry Mountains-
Northern Blue Mountains of Oregon-Central Blue Mountains-
Wallowa District-Blue Mountains of Washington-Asotin County-
1159 PM PDT Sat Jul 31 2021

...RED FLAG WARNING WILL EXPIRE AT MIDNIGHT PDT TONIGHT FOR FIRE 
WEATHER ZONES OR640, OR642, OR643, OR644, OR645, WA643, AND 
WA645...

The threat for abundant lightning has ended. A few storms may
redevelop on Sunday but they will be accompanied by a wetting
rain. 

$$

The office that day

Everything else NWS Pendleton, OR issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 29, 2:36 PM PDTFire Weather WatchPDT24 hr

Nearby

Red Flag Warnings in Oregon, 2021Every red flag warning in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.