Alert archive / Washington / Red Flag Warnings in 2011
Red Flag Warning 8, NWS Pendleton, OR
NWS Pendleton, OR issued this red flag warning at Aug 25, 2011, 3:35 AM PDT for Cowlitz County, Washington. It took effect at Aug 25, 2011, 12:00 PM PDT. It was in force for 21 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
- Aug 25, 2011, 3:35 AM PDT (10:35 UTC)
- In effect from
- Aug 25, 2011, 12:00 PM PDT
- Expired
- Aug 26, 2011, 9:00 AM PDT
- In force
- 21 hr
- Issued by
- NWS Pendleton, OR
County Cowlitz County, WA
The radar
The Portland,OR radar (KRTX), 58 km from the middle of the area, began a volume at 10:37 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Salem/Mcnary, OR (KSLE), launched 00:00Z, 10.6 hours before the alert went out and 144 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 251 J/kg
- Mixed-layer CIN
- -283 J/kg
- Mixed-layer LCL
- 2161 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- -31 m²/s²
- 0-3 km storm-relative helicity
- 114 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
306 WWUS86 KPDT 251035 RFWPDT URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE PENDLETON OR 335 AM PDT THU AUG 25 2011 ...THUNDERSTORMS ARE EXPECTED THIS MORNING ACROSS THE MOUNTAINS OF NORTHEAST OREGON AND SOUTHEAST WASHINGTON AND WILL CONTINUE THROUGH THIS EVENING. ELSEWHERE THUNDERSTORMS WILL DEVELOP AGAIN BY THIS AFTERNOON AND CONTINUE THROUGH LATE THIS EVENING OVER THE MOUNTAINS OF CENTRAL AND EAST CENTRAL OREGON... .A WEATHER SYSTEM MOVING ACROSS THE REGION WILL PRODUCE SCATTERED THUNDERSTORMS WITH ABUNDANT LIGHTNING IN THE MOUNTAINS OF NORTHEAST OREGON AND SOUTHEAST WASHINGTON THIS MORNING THROUGH LATE THIS EVENING. IN ADDITION ANOTHER WEATHER SYSTEM WILL MOVE INTO THE REGION AND CAUSE THUNDERSTORMS AGAIN BY THIS AFTERNOON OVER THE MOUNTAINS OF CENTRAL AND EAST CENTRAL OREGON AND WILL CONTINUE THROUGH LATE THIS EVENING. ORZ610-611-630-632-251900- /O.NEW.KPDT.FW.W.0008.110825T1900Z-110826T0600Z/ EAST SLOPES OF CENTRAL OREGON CASCADES-DESCHUTES NATIONAL FOREST- CENTRAL MOUNTAINS OF OREGON- SOUTHERN BLUE AND STRAWBERRY MOUNTAINS- 335 AM PDT THU AUG 25 2011 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 11 PM PDT THIS EVENING FOR THUNDERSTORMS PRODUCING ABUNDANT LIGHTNING ACROSS FIRE WEATHER ZONES OR610...OR611...OR630 AND OR632... THE NATIONAL WEATHER SERVICE IN PENDLETON HAS ISSUED A RED FLAG WARNING FOR THUNDERSTORMS PRODUCING ABUNDANT LIGHTNING...WHICH IS IN EFFECT FROM NOON TODAY TO 11 PM PDT THIS EVENING. * AFFECTED AREA...IN OREGON...FIRE WEATHER ZONE 610 EAST SLOPES OF CENTRAL OREGON CASCADES...FIRE WEATHER ZONE 611 DESCHUTES NATIONAL FOREST...FIRE WEATHER ZONE 630 CENTRAL MOUNTAINS OF OREGON AND FIRE WEATHER ZONE 632 SOUTHERN BLUE AND STRAWBERRY MOUNTAINS. * TIMING...FROM NOON TODAY THROUGH LATE THIS EVENING. * THUNDERSTORMS...SCATTERED THUNDERSTORMS WILL DEVELOP AGAIN BY THIS AFTERNOON AND CONTINUE THROUGH THIS EVENING. * PRECIPITATION...THE STORMS ARE EXPECTED TO PRODUCE SOME RAINFALL. * LIGHTNING ACTIVITY LEVEL...LAL 3 WITH SOME STORMS POSSIBLY PRODUCING LAL 4. * IMPACTS...FREQUENT LIGHTNING AND CRITICALLY DRY FUELS MAY RESULT IN NUMEROUS FIRE STARTS. 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 WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ ORZ633>635-638-WAZ633-251900- /O.EXT.KPDT.FW.W.0007.000000T0000Z-110826T0600Z/ NORTHERN BLUE MOUNTAINS OF OREGON-EAGLE CAP DISTRICT- WALLOWA DISTRICT-BAKER VALLEY-BLUE MOUNTAINS OF WASHINGTON- 335 AM PDT THU AUG 25 2011 ...RED FLAG WARNING NOW IN EFFECT UNTIL 11 PM PDT THIS EVENING FOR THUNDERSTORMS PRODUCING ABUNDANT LIGHTNING ACROSS FIRE WEATHER ZONES OR633...OR634...OR635...OR638 AND WA633... THE RED FLAG WARNING IS NOW IN EFFECT UNTIL 11 PM PDT THIS EVENING. * AFFECTED AREA...IN OREGON...FIRE WEATHER ZONE 633 NORTHERN BLUE MOUNTAINS OF OREGON...FIRE WEATHER ZONE 634 EAGLE CAP DISTRICT...FIRE WEATHER ZONE 635 WALLOWA DISTRICT AND FIRE WEATHER ZONE 638 BAKER VALLEY. IN WASHINGTON...FIRE WEATHER ZONE 633 BLUE MOUNTAINS OF WASHINGTON. * TIMING...THIS MORNING THROUGH LATE THIS EVENING. * THUNDERSTORMS...SCATTERED THUNDERSTORMS WILL CONTINUE OVER THE MOUNTAINS OF NORTHEAST OREGON AND SOUTHEAST WASHINGTON THIS MORNING AND WILL CONTINUE THROUGH LATE THIS EVENING. * PRECIPITATION...THE STORMS ARE EXPECTED TO PRODUCE SOME RAINFALL. * LIGHTNING ACTIVITY LEVEL...LAL 3 WITH SOME STORMS POSSIBLY PRODUCING LAL 4. * IMPACTS...FREQUENT LIGHTNING AND CRITICALLY DRY FUELS MAY RESULT IN NUMEROUS FIRE STARTS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND VERY WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ FOR MORE INFORMATION FROM NOAA/NATIONAL WEATHER SERVICE VISIT... HTTP://WEATHER.GOV/PENDLETON (ALL LOWER CASE)
5 follow-up statements
160 WWUS86 KPDT 251859 RFWPDT URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE PENDLETON OR 1159 AM PDT THU AUG 25 2011 ...SCATTERED THUNDERSTORMS POSSIBLE ACROSS THE AREA TODAY AND TONIGHT... .THUNDERSTORMS WILL DEVELOP AGAIN BY THIS AFTERNOON AND CONTINUE THROUGH LATE THIS EVENING OVER THE MOUNTAINS OF CENTRAL AND NORTHEAST OREGON.ANOTHER LOW PRESSURE SYSTEM WILL MOVE INTO NORTH CENTRAL OREGON LATER THIS EVENING AND THEN INTO CENTRAL WASHINGTON OVERNIGHT. ISOLATED TO SCATTERED THUNDERSTORMS WITH ABUNDANT LIGHTNING WILL THEREFORE BE POSSIBLE IN THESE AREAS THROUGH EARLY MORNING FRIDAY. ORZ609-631-WAZ609-631-675-681-260600- /O.EXB.KPDT.FW.W.0008.110826T0300Z-110826T1600Z/ EAST SLOPES OF NORTH OREGON CASCADES-COLUMBIA BASIN OF OREGON- EAST SLOPES OF THE SOUTHERN WASHINGTON CASCADES- LOWER COLUMBIA BASIN OF WASHINGTON- EASTERN WASHINGTON SOUTHERN COLUMBIA BASIN-YAKAMA ALPINE DISTRICT- 1159 AM PDT THU AUG 25 2011 ...RED FLAG WARNING IN EFFECT FROM 8 PM THIS EVENING TO 9 AM PDT FRIDAY FOR THUNDERSTORMS PRODUCING ABUNDANT LIGHTNING ACROSS FIRE WEATHER ZONES OR609...OR631...WA609...WA631...WA675 AND WA681... THE NATIONAL WEATHER SERVICE IN PENDLETON HAS ISSUED A RED FLAG WARNING FOR THUNDERSTORMS PRODUCING ABUNDANT LIGHTNING...WHICH IS IN EFFECT FROM 8 PM THIS EVENING TO 9 AM PDT FRIDAY. * AFFECTED AREA...IN OREGON...FIRE WEATHER ZONE 609 EAST SLOPES OF NORTH OREGON CASCADES AND WESTERN PORTIONS OF FIRE WEATHER ZONE 631 COLUMBIA BASIN OF OREGON. IN WASHINGTON...FIRE WEATHER ZONE 609 EAST SLOPES OF THE SOUTHERN WASHINGTON CASCADES...WESTERN PORTIONS OF FIRE WEATHER ZONE 631 LOWER COLUMBIA BASIN OF WASHINGTON...FIRE WEATHER ZONE 675 EASTERN WASHINGTON SOUTHERN COLUMBIA BASIN AND FIRE WEATHER ZONE 681 YAKAMA ALPINE DISTRICT. * TIMING...THUNDERSTORMS WILL MOVE INTO NORTH CENTRAL OREGON LATER THIS EVENING AND THEN INTO SOUTH CENTRAL WASHINGTON AFTER MIDNIGHT. STORMS WILL MOVE THROUGH CENTRAL WASHINGTON AND THEN DISSIPATE BY MID-MORNING FRIDAY. * THUNDERSTORMS...ISOLATED TO SCATTERED STORMS THAT COULD PRODUCE ABUNDANT LIGHTNING AND BRIEF GUSTY WINDS. * PRECIPITATION...GENERALLY LESS THAN ONE TENTH OF AN INCH. * LIGHTNING ACTIVITY LEVEL...LAL 3 WITH SOME STORMS POSSIBLY PRODUCING LAL 4. * IMPACTS...FREQUENT LIGHTNING AND CRITICALLY DRY FUELS MAY RESULT IN NUMEROUS FIRE STARTS. 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 WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ ORZ633>635-638-WAZ633-260600- /O.CON.KPDT.FW.W.0007.000000T0000Z-110826T0600Z/ NORTHERN BLUE MOUNTAINS OF OREGON-EAGLE CAP DISTRICT- WALLOWA DISTRICT-BAKER VALLEY-BLUE MOUNTAINS OF WASHINGTON- 1159 AM PDT THU AUG 25 2011 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING FOR THUNDERSTORMS PRODUCING ABUNDANT LIGHTNING ACROSS FIRE WEATHER ZONES OR633...OR634...OR635...OR638 AND WA633... A RED FLAG WARNING REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING. * AFFECTED AREA...IN OREGON...FIRE WEATHER ZONE 633 NORTHERN BLUE MOUNTAINS OF OREGON...FIRE WEATHER ZONE 634 EAGLE CAP DISTRICT...FIRE WEATHER ZONE 635 WALLOWA DISTRICT AND FIRE WEATHER ZONE 638 BAKER VALLEY. IN WASHINGTON...FIRE WEATHER ZONE 633 BLUE MOUNTAINS OF WASHINGTON. * TIMING...THIS AFTERNOON THROUGH LATE THIS EVENING. * THUNDERSTORMS...SCATTERED THUNDERSTORMS WILL DEVELOP THIS AFTERNOON OVER THE MOUNTAINS OF NORTHEAST OREGON AND SOUTHEAST WASHINGTON AND WILL CONTINUE THROUGH LATE THIS EVENING. * PRECIPITATION...THE STORMS ARE EXPECTED TO PRODUCE SOME RAINFALL BUT WILL GENERALLY BE LESS THAN ONE TENTH OF AN INCH. * LIGHTNING ACTIVITY LEVEL...LAL 3 WITH SOME STORMS POSSIBLY PRODUCING LAL 4. * IMPACTS...FREQUENT LIGHTNING AND CRITICALLY DRY FUELS MAY RESULT IN NUMEROUS FIRE STARTS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND VERY WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ ORZ610-611-630-632-260600- /O.CON.KPDT.FW.W.0008.110825T1900Z-110826T0600Z/ EAST SLOPES OF CENTRAL OREGON CASCADES-DESCHUTES NATIONAL FOREST- CENTRAL MOUNTAINS OF OREGON- SOUTHERN BLUE AND STRAWBERRY MOUNTAINS- 1159 AM PDT THU AUG 25 2011 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING FOR THUNDERSTORMS PRODUCING ABUNDANT LIGHTNING ACROSS FIRE WEATHER ZONES OR610...OR611...OR630 AND OR632... A RED FLAG WARNING REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING. * AFFECTED AREA...IN OREGON...FIRE WEATHER ZONE 610 EAST SLOPES OF CENTRAL OREGON CASCADES...FIRE WEATHER ZONE 611 DESCHUTES NATIONAL FOREST...FIRE WEATHER ZONE 630 CENTRAL MOUNTAINS OF OREGON AND FIRE WEATHER ZONE 632 SOUTHERN BLUE AND STRAWBERRY MOUNTAINS. * TIMING...FROM THIS AFTERNOON THROUGH LATE THIS EVENING. * THUNDERSTORMS...SCATTERED THUNDERSTORMS WILL DEVELOP AGAIN THIS AFTERNOON AND CONTINUE THROUGH THIS EVENING. * PRECIPITATION...THE STORMS ARE EXPECTED TO PRODUCE SOME RAINFALL BUT WILL GENERALLY BE LESS THAN ONE TENTH OF AN INCH. * LIGHTNING ACTIVITY LEVEL...LAL 3 WITH SOME STORMS POSSIBLY PRODUCING LAL 4. * IMPACTS...FREQUENT LIGHTNING AND CRITICALLY DRY FUELS MAY RESULT IN NUMEROUS FIRE STARTS. 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 WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ FOR MORE INFORMATION FROM NOAA/NATIONAL WEATHER SERVICE VISIT... HTTP://WEATHER.GOV/PENDLETON (ALL LOWER CASE)
849 WWUS86 KPDT 260453 RFWPDT URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE PENDLETON OR 953 PM PDT THU AUG 25 2011 ...SCATTERED THUNDERSTORMS POSSIBLE ACROSS THE AREA TONIGHT AND FRIDAY MORNING... .THUNDERSTORMS WILL DEVELOP AGAIN STARTING LATE THIS EVENING AND THEN OVERNIGHT IN THE COLUMBIA BASIN OF WASHINGTON AND OREGON AS WELL AS IN SOUTH CENTRAL WASHINGTON...INCLUDING THE YAKIMA VALLEY AND THE LOWER PORTION OF THE KITTITAS VALLEY. ANOTHER LOW PRESSURE SYSTEM WILL MOVE INTO NORTH CENTRAL OREGON LATER THIS EVENING AND THEN INTO CENTRAL WASHINGTON OVERNIGHT. ISOLATED TO SCATTERED THUNDERSTORMS WITH ABUNDANT LIGHTNING WILL THEREFORE BE POSSIBLE IN THESE AREAS THROUGH MID-MORNING FRIDAY. ORZ633>635-638-WAZ633-260600- /O.CAN.KPDT.FW.W.0007.000000T0000Z-110826T0600Z/ NORTHERN BLUE MOUNTAINS OF OREGON-EAGLE CAP DISTRICT- WALLOWA DISTRICT-BAKER VALLEY-BLUE MOUNTAINS OF WASHINGTON- 953 PM PDT THU AUG 25 2011 ...RED FLAG WARNING IS CANCELLED FOR THUNDERSTORMS PRODUCING ABUNDANT LIGHTNING ACROSS FIRE WEATHER ZONES OR633...OR634... OR635...OR638 AND WA633... THE NATIONAL WEATHER SERVICE IN PENDLETON HAS CANCELLED THE RED FLAG WARNING. THUNDERSTORMS ARE NOT EXPECTED DUE TO A DRIER AIR MASS MOVING THROUGH THE REGION THIS EVENING. $$ ORZ611-630-632-260600- /O.CAN.KPDT.FW.W.0008.000000T0000Z-110826T0600Z/ DESCHUTES NATIONAL FOREST-CENTRAL MOUNTAINS OF OREGON- SOUTHERN BLUE AND STRAWBERRY MOUNTAINS- 953 PM PDT THU AUG 25 2011 ...RED FLAG WARNING IS CANCELLED FOR THUNDERSTORMS PRODUCING ABUNDANT LIGHTNING ACROSS FIRE WEATHER ZONES OR611...OR630 AND OR632... THE NATIONAL WEATHER SERVICE IN PENDLETON HAS CANCELLED THE RED FLAG WARNING. THUNDERSTORMS ARE NOT EXPECTED DUE TO A DRIER AIR MASS MOVING THROUGH THE REGION THIS EVENING. $$ ORZ610-260600- /O.CON.KPDT.FW.W.0008.000000T0000Z-110826T0600Z/ EAST SLOPES OF CENTRAL OREGON CASCADES- 953 PM PDT THU AUG 25 2011 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING FOR THUNDERSTORMS PRODUCING ABUNDANT LIGHTNING ACROSS FIRE WEATHER ZONE OR610. A RED FLAG WARNING REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING. * AFFECTED AREA...IN OREGON...FIRE WEATHER ZONE 610 EAST SLOPES OF CENTRAL OREGON CASCADES...FIRE WEATHER ZONE 611 DESCHUTES NATIONAL FOREST...FIRE WEATHER ZONE 630 CENTRAL MOUNTAINS OF OREGON AND FIRE WEATHER ZONE 632 SOUTHERN BLUE AND STRAWBERRY MOUNTAINS. * TIMING...FROM THIS AFTERNOON THROUGH LATE THIS EVENING. * THUNDERSTORMS...SCATTERED THUNDERSTORMS WILL DEVELOP AGAIN THIS AFTERNOON AND CONTINUE THROUGH THIS EVENING. * PRECIPITATION...THE STORMS ARE EXPECTED TO PRODUCE SOME RAINFALL BUT WILL GENERALLY BE LESS THAN ONE TENTH OF AN INCH. * LIGHTNING ACTIVITY LEVEL...LAL 3 WITH SOME STORMS POSSIBLY PRODUCING LAL 4. * IMPACTS...FREQUENT LIGHTNING AND CRITICALLY DRY FUELS MAY RESULT IN NUMEROUS FIRE STARTS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ ORZ609-631-WAZ609-631-675-681-261300- /O.CON.KPDT.FW.W.0008.000000T0000Z-110826T1600Z/ EAST SLOPES OF NORTH OREGON CASCADES-COLUMBIA BASIN OF OREGON- EAST SLOPES OF THE SOUTHERN WASHINGTON CASCADES- LOWER COLUMBIA BASIN OF WASHINGTON- EASTERN WASHINGTON SOUTHERN COLUMBIA BASIN-YAKAMA ALPINE DISTRICT- 953 PM PDT THU AUG 25 2011 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 AM PDT FRIDAY FOR THUNDERSTORMS PRODUCING ABUNDANT LIGHTNING ACROSS FIRE WEATHER ZONES OR609...OR631...WA609...WA631...WA675 AND WA681... A RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 AM PDT FRIDAY. * AFFECTED AREA...IN OREGON...FIRE WEATHER ZONE 609 EAST SLOPES OF NORTH OREGON CASCADES AND WESTERN PORTIONS OF FIRE WEATHER ZONE 631 COLUMBIA BASIN OF OREGON. IN WASHINGTON...FIRE WEATHER ZONE 609 EAST SLOPES OF THE SOUTHERN WASHINGTON CASCADES... WESTERN PORTIONS OF FIRE WEATHER ZONE 631 LOWER COLUMBIA BASIN OF WASHINGTON...FIRE WEATHER ZONE 675 EASTERN WASHINGTON SOUTHERN COLUMBIA BASIN AND FIRE WEATHER ZONE 681 YAKIMA ALPINE DISTRICT. * TIMING...THUNDERSTORMS WILL MOVE INTO NORTH CENTRAL OREGON LATER THIS EVENING AND THEN INTO SOUTH CENTRAL WASHINGTON AFTER MIDNIGHT. STORMS WILL MOVE THROUGH CENTRAL WASHINGTON AND THEN DISSIPATE BY MID-MORNING FRIDAY. * THUNDERSTORMS...ISOLATED TO SCATTERED STORMS THAT COULD PRODUCE ABUNDANT LIGHTNING AND BRIEF GUSTY WINDS. * PRECIPITATION...GENERALLY LESS THAN ONE TENTH OF AN INCH. * LIGHTNING ACTIVITY LEVEL...LAL 3 WITH SOME STORMS POSSIBLY PRODUCING LAL 4. * IMPACTS...FREQUENT LIGHTNING AND CRITICALLY DRY FUELS MAY RESULT IN NUMEROUS FIRE STARTS. 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 WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ FOR MORE INFORMATION FROM NOAA/NATIONAL WEATHER SERVICE VISIT... HTTP://WEATHER.GOV/PENDLETON (ALL LOWER CASE)
635 WWUS86 KPDT 260559 RFWPDT URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE PENDLETON OR 1059 PM PDT THU AUG 25 2011 ...SCATTERED THUNDERSTORMS POSSIBLE ACROSS THE AREA TONIGHT AND FRIDAY MORNING... .THUNDERSTORMS WILL DEVELOP AGAIN AFTER MIDNIGHT AND IN THE COLUMBIA BASIN OF WASHINGTON AND OREGON AS WELL AS IN SOUTH CENTRAL WASHINGTON...INCLUDING THE YAKIMA VALLEY AND THE LOWER KITTITAS VALLEY. ANOTHER LOW PRESSURE SYSTEM WILL MOVE INTO NORTH CENTRAL OREGON AROUND MIDNIGHT AND THEN INTO CENTRAL WASHINGTON OVERNIGHT. ISOLATED TO SCATTERED THUNDERSTORMS WITH ABUNDANT LIGHTNING WILL THEREFORE BE POSSIBLE IN THESE AREAS THROUGH MID- MORNING FRIDAY. ORZ610-260700- /O.EXP.KPDT.FW.W.0008.000000T0000Z-110826T0600Z/ EAST SLOPES OF CENTRAL OREGON CASCADES- 1059 PM PDT THU AUG 25 2011 ...RED FLAG WARNING WILL EXPIRE AT 11 PM PDT THIS FIRE WEATHER ZONE OR610... THE RED FLAG WARNING WILL EXPIRE AT 11 PM PDT THIS EVENING. A DRIER AIR MASS IN THE LAYER FROM THE SURFACE TO 20000 FT MOVED INTO THE AREA THIS AFTERNOON AND THIS EVENING RESULTING IN A LACK OF SUFFICIENT MOISTURE FOR THUNDERSTORM DEVELOPMENT. AS SUCH THUNDERSTORMS ARE NOT EXPECTED DUE TO A DRIER AIR MASS MOVING THROUGH THE REGION THIS EVENING. $$ ORZ609-631-WAZ609-631-675-681-261400- /O.CON.KPDT.FW.W.0008.000000T0000Z-110826T1600Z/ EAST SLOPES OF NORTH OREGON CASCADES-COLUMBIA BASIN OF OREGON- EAST SLOPES OF THE SOUTHERN WASHINGTON CASCADES- LOWER COLUMBIA BASIN OF WASHINGTON- EASTERN WASHINGTON SOUTHERN COLUMBIA BASIN-YAKAMA ALPINE DISTRICT- 1059 PM PDT THU AUG 25 2011 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 AM PDT FRIDAY FOR THUNDERSTORMS PRODUCING ABUNDANT LIGHTNING ACROSS FIRE WEATHER ZONES OR609...OR631...WA609...WA631...WA675 AND WA681... A RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 AM PDT FRIDAY. * AFFECTED AREA...IN OREGON...FIRE WEATHER ZONE 609 EAST SLOPES OF NORTH OREGON CASCADES AND WESTERN PORTIONS OF FIRE WEATHER ZONE 631 COLUMBIA BASIN OF OREGON. IN WASHINGTON...FIRE WEATHER ZONE 609 EAST SLOPES OF THE SOUTHERN WASHINGTON CASCADES... WESTERN PORTIONS OF FIRE WEATHER ZONE 631 LOWER COLUMBIA BASIN OF WASHINGTON...FIRE WEATHER ZONE 675 EASTERN WASHINGTON SOUTHERN COLUMBIA BASIN AND FIRE WEATHER ZONE 681 YAKIMA ALPINE DISTRICT. * TIMING...THUNDERSTORMS WILL MOVE INTO NORTH CENTRAL OREGON LATER THIS EVENING AND THEN INTO SOUTH CENTRAL WASHINGTON AFTER MIDNIGHT. STORMS WILL MOVE THROUGH CENTRAL WASHINGTON AND THEN DISSIPATE BY MID-MORNING FRIDAY. * THUNDERSTORMS...ISOLATED TO SCATTERED STORMS THAT COULD PRODUCE ABUNDANT LIGHTNING AND BRIEF GUSTY WINDS. * PRECIPITATION...GENERALLY LESS THAN ONE TENTH OF AN INCH. * LIGHTNING ACTIVITY LEVEL...LAL 3 WITH SOME STORMS POSSIBLY PRODUCING LAL 4. * IMPACTS...FREQUENT LIGHTNING AND CRITICALLY DRY FUELS MAY RESULT IN NUMEROUS FIRE STARTS. 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 WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ FOR MORE INFORMATION FROM NOAA/NATIONAL WEATHER SERVICE VISIT... HTTP://WEATHER.GOV/PENDLETON (ALL LOWER CASE)
149 WWUS86 KPDT 261227 RFWPDT URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE PENDLETON OR 527 AM PDT FRI AUG 26 2011 ...SCATTERED THUNDERSTORMS POSSIBLE ACROSS THE AREA THIS MORNING... .THUNDERSTORMS ARE DEVELOPING EARLY THIS MORNING AND WILL CONTINUE TO DO SO AND SPREAD EASTWARD INTO THE THE COLUMBIA BASIN OF WASHINGTON AND OREGON AS WELL AS IN SOUTH CENTRAL WASHINGTON...INCLUDING THE YAKIMA VALLEY AND THE LOWER KITTITAS VALLEY. ISOLATED TO SCATTERED THUNDERSTORMS WITH ABUNDANT LIGHTNING WILL THEREFORE BE POSSIBLE IN THESE AREAS THROUGH MID- MORNING TODAY. ORZ609-631-WAZ609-631-675-681-261600- /O.CON.KPDT.FW.W.0008.000000T0000Z-110826T1600Z/ EAST SLOPES OF NORTH OREGON CASCADES-COLUMBIA BASIN OF OREGON- EAST SLOPES OF THE SOUTHERN WASHINGTON CASCADES- LOWER COLUMBIA BASIN OF WASHINGTON- EASTERN WASHINGTON SOUTHERN COLUMBIA BASIN-YAKAMA ALPINE DISTRICT- 527 AM PDT FRI AUG 26 2011 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 AM PDT THIS MORNING FOR THUNDERSTORMS PRODUCING ABUNDANT LIGHTNING ACROSS FIRE WEATHER ZONES OR609...OR631...WA609...WA631...WA675 AND WA681... A RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 AM PDT THIS MORNING. * AFFECTED AREA...IN OREGON...FIRE WEATHER ZONE 609 EAST SLOPES OF NORTH OREGON CASCADES AND WESTERN PORTIONS OF FIRE WEATHER ZONE 631 COLUMBIA BASIN OF OREGON. IN WASHINGTON...FIRE WEATHER ZONE 609 EAST SLOPES OF THE SOUTHERN WASHINGTON CASCADES... WESTERN PORTIONS OF FIRE WEATHER ZONE 631 LOWER COLUMBIA BASIN OF WASHINGTON...FIRE WEATHER ZONE 675 EASTERN WASHINGTON SOUTHERN COLUMBIA BASIN AND FIRE WEATHER ZONE 681 YAKIMA ALPINE DISTRICT. * TIMING...THUNDERSTORMS WILL MOVE INTO NORTH CENTRAL OREGON AND THEN INTO SOUTH CENTRAL WASHINGTON THIS MORNING. THE STORMS WILL MOVE THROUGH CENTRAL WASHINGTON AND THEN DISSIPATE BY LATE THIS MORNING. * THUNDERSTORMS...ISOLATED TO SCATTERED STORMS MAY PRODUCE ABUNDANT LIGHTNING AND BRIEF GUSTY WINDS. * PRECIPITATION...GENERALLY LESS THAN ONE TENTH OF AN INCH. * LIGHTNING ACTIVITY LEVEL...LAL 3 WITH SOME STORMS POSSIBLY PRODUCING LAL 4. * IMPACTS...FREQUENT LIGHTNING AND CRITICALLY DRY FUELS MAY RESULT IN NUMEROUS FIRE STARTS. 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 WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ FOR MORE INFORMATION FROM NOAA/NATIONAL WEATHER SERVICE VISIT... HTTP://WEATHER.GOV/PENDLETON (ALL LOWER CASE)
347 WWUS86 KPDT 261539 RFWPDT URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE PENDLETON OR 839 AM PDT FRI AUG 26 2011 ORZ609-631-WAZ609-631-675-681-261645- /O.EXP.KPDT.FW.W.0008.000000T0000Z-110826T1600Z/ EAST SLOPES OF NORTH OREGON CASCADES-COLUMBIA BASIN OF OREGON- EAST SLOPES OF THE SOUTHERN WASHINGTON CASCADES- LOWER COLUMBIA BASIN OF WASHINGTON- EASTERN WASHINGTON SOUTHERN COLUMBIA BASIN-YAKAMA ALPINE DISTRICT- 839 AM PDT FRI AUG 26 2011 ...RED FLAG WARNING WILL EXPIRE AT 9 AM PDT THIS MORNING ACROSS FIRE WEATHER ZONES OR609...WA609...OR631...WA631...WA675 AND WA681... THE RED FLAG WARNING WILL EXPIRE AT 9 AM PDT THIS MORNING. THE THREAT FOR WIDESPREAD AND ABUNDANT LIGHTNING HAS DIMINISHED WITH MOST OF THE ACTIVITY HAVING OCCURRED WEST OF THE HORSE HEAVEN HILLS THIS MORNING. THEREFORE, THE RED FLAG WARNING WILL BE ALLOWED TO EXPIRE AT 9 AM. ISOLATED THUNDERSTORMS WILL STILL BE POSSIBLE MAINLY ACROSS THE COLUMBIA BASIN THIS MORNING. RAIN AMOUNTS WILL CONTINUE TO BE LIGHT AND CONTRIBUTE TOWARD SOME POTENTIAL FIRE IGNITIONS. $$ FOR MORE INFORMATION FROM NOAA/NATIONAL WEATHER SERVICE VISIT... HTTP://WEATHER.GOV/PENDLETON (ALL LOWER CASE)
What forecasters said that day
The local office's own words before this red flag warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Pendleton, OR wrote its last area forecast discussion before this red flag warning went out at Aug 25, 2:25 AM PDT, 1 hour 10 minutes earlier.
Area forecast discussion, Aug 25, 2:25 AM PDT, 1 hour 10 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
225 AM PDT THU AUG 25 2011
.SHORT TERM...TODAY THROUGH SATURDAY...A VIGOROUS WEATHER
DISTURBANCE CONTINUES TO WORK ITS WAY NORTHEAST ACROSS THE REGION
AND COUNTY WARNING AREA THIS MORNING. WATER VAPOR SATELLITE IMAGERY
CLEARLY SHOWS THE ROTATING SPIN OF THIS SYSTEM MOVING ACROSS OREGON
AND WASHINGTON FROM SOUTHWEST TO NORTHEAST. THE MAIN BRUNT OF THE
SYSTEM HAS ALREADY MOVE PAST THE FORECAST AREA INTO EAST CENTRAL
WASHINGTON. HOWEVER...A SECONDARY DISTURBANCE IS NOW SPINNING UP
FROM WEST CENTRAL OREGON INTO EAST CENTRAL AND NORTH CENTRAL OREGON.
THIS SECONDARY DISTURBANCE IS CAUSING NOCTURNAL THUNDERSTORMS TO
CONTINUE EARLY THIS MORNING DUE TO DYNAMIC FORCING WITH UNSTABLE AIR
WITH ELEVATED INSTABILITY OVER CENTRAL AND NORTH CENTRAL OREGON.
THESE STORMS THAT ARE FORMING THEY ARE NOT LIKELY TO DISSIPATE UNTIL
THIS DISTURBANCE PASSES THE FORECAST AREA LATER THIS MORNING. AS
SUCH WILL KEEP THUNDERSTORMS IN THE FORECAST THIS MORNING AS WELL AS
THIS AFTERNOON. ONCE THIS SYSTEM MOVES TO THE EAST WEAK RIDGING WILL
TAKE PLACE LATER TODAY BEFORE THE NEXT SYSTEM QUICKLY FOLLOWS BEHIND
IT FOR TONIGHT AND FRIDAY. THIS NEXT SYSTEM LOOKS TO BE JUST AS
POTENT AS THE CURRENT SYSTEM AND WILL LIKELY HAVE MORE CONVECTION ON
FRIDAY AS A RESULT. WITH SURFACE TEMPERATURES BEING SO WARM AND DRY
HIGH BASED THUNDERSTORMS WILL BE THE RULE WHICH WILL MEAN LITTLE
RAINFALL AND ABUNDANT LIGHTNING OVER VERY DRY FUELS...I.E. A FIRE
WEATHER CONCERN. PLEASE SEE THE FIRE WEATHER DISCUSSION BELOW.
TEMPERATURES ARE EXPECTED TO REMAIN ABOVE NORMAL THROUGH THE SHORT
TERM WITH 90S IN THE LOWER ELEVATIONS AND 70S TO 80S IN THE
MOUNTAINS. 88
.LONG TERM...SATURDAY NIGHT THROUGH WEDNESDAY NIGHT...AN UPPER LEVEL
RIDGE WILL CONTINUE TO REBUILD WITH THE POSSIBILITY OF A WEAK
DISTURBANCE EMBEDDED SUNDAY AND MONDAY. FOR NOW HAVE KEPT POPS DRY
DUE TO THE INCONSISTENT TIMING AND UNCERTAINTY OF THE MODELS. MODELS
HINT THAT THE RIDGE THAT HAS BEEN REBUILDING OVER THE AREA FOR THE
PAST COUPLE OF WEEKS MAY BEGIN TO BREAK DOWN MONDAY...AS AN UPPER
LEVEL TROUGH SHIFTS THE WEATHER PATTERN OVER THE AREA.
GFS...DGEX...AND ECMWF ALL SEE TO HAVE THIS SOLUTION. TEMPERATURES
WILL COOL OFF AND SHOULD BE BACK IN THE UPPER 70S TO MID 80S ACROSS
THE LOWER ELEVATIONS AND IN THE UPPER 60S MOUNTAINS. NIGHT TIME LOWS
COULD START TO GET CHILLY IN THE CENTRAL OREGON AREA WEDNESDAY
MORNING AS THE MODELS HAVE THE TROUGH AXIS OVER THE CASCADES AT THIS
TIME. RIGHT NOW MOISTURE CONTENT WITH THIS DISTURBANCE SEEMS TO BE
MORE FOCUSED IN THE NORTHERN WASHINGTON SOUTHERN CANADA REGION. BUT
WILL CONTINUE TO MONITOR AND ADJUST POPS AS NEEDED. WEBER
&&
.AVIATION...PREVIOUS DISCUSSION...06Z TAFS...VFR CONDITIONS SHOULD
CONTINUE OVER THE NEXT 24 HOURS WITH THE EXCEPTION OF ISOLATED MVFR
CONDITIONS IN VICINITY OF THUNDERSTORMS AND SHOWERS EXPECTED TO
OCCUR THROUGH THE REMAINDER OF TONIGHT IN NORTHEAST OREGON AND
SOUTHEAST WASHINGTON. MAIN CLOUD BASE WILL BE AROUND 12000-15000 FT
AGL BUT VICINITY OF STORMS COULD SEE LOWER CLOUD BASES AND RAIN
SHAFTS. WINDS WILL REMAIN FAIRLY LIGHT AROUND 5-10 KTS BUT WITH
POSSIBLE GUSTY CONDITIONS VICINITY OF STORMS. THUNDERSTORMS WILL
MAINLY IMPACT KPDT...KRDM AND KBDN UNTIL 25/07Z. STILL A LINGERING
THREAT OF THUNDERSTORMS ON THURSDAY FOR KRDM AND KBDN. POLAN
&&
.FIRE WEATHER...WILL LIKELY NEED TO EXTEND THE EXISTING RED FLAG
WARNING TO CONTINUE THROUGH TODAY AND PROBABLY ON FRIDAY AS WELL DUE
TO ABUNDANT LIGHTNING WITH HIGH BASED THUNDERSTORMS THAT PRODUCE
LITTLE RAINFALL. THE AREAS WHERE THE PREVIOUS RED FLAG WARNING WERE
CANCELLED WILL LIKELY NEED TO BE RE-ISSUED AGAIN IN THE EXTENSION BY
LATER THIS MORNING. THE RED FLAG WARNINGS SHOULD BE KEPT GOING
THROUGH TONIGHT AND ON FRIDAY DESPITE ANY TEMPORARY BREAK IN
THUNDERSTORM ACTIVITY THIS AFTERNOON AS THIS WILL BE AN ONGOING FIRE
WEATHER EVENT. WILL ISSUE THE NEW RFW PRODUCT SHOWING THE EXTENSION
OF THE EXISTING WARNINGS...AND WITH THE REINTRODUCTION OF THE
PREVIOUSLY CANCELED WARNED AREAS IN THE NEW WARNING AS WELL. 88
&&
.PRELIMINARY POINT TEMPS/POPS...
PDT 90 60 90 60 / 20 10 10 10
ALW 91 65 92 65 / 20 10 10 10
PSC 92 60 95 63 / 10 10 10 10
YKM 90 58 93 59 / 10 10 10 10
HRI 91 63 92 64 / 20 10 10 10
ELN 90 62 93 61 / 10 10 10 10
RDM 89 51 93 50 / 20 20 20 20
LGD 91 56 92 59 / 20 20 20 20
GCD 90 57 93 57 / 20 20 20 20
DLS 91 63 92 63 / 10 10 10 10
&&
.PDT WATCHES/WARNINGS/ADVISORIES...
OR...RED FLAG WARNING UNTIL 6 AM PDT EARLY THIS MORNING
ORZ049-050-502-503-507.
WA...RED FLAG WARNING UNTIL 6 AM PDT EARLY THIS MORNING WAZ030.
&&
THREAT INDEX
TODAY : YELLOW
FRIDAY : GREEN
SATURDAY : GREEN
GREEN: NONE OR LIMITED NEED FOR WATCHES, WARNINGS, OR ADVISORIES.
YELLOW: A FEW WATCHES, WARNINGS, OR ADVISORIES POSSIBLE OR IN EFFECT.
RED: NUMEROUS WATCHES, WARNINGS, OR ADVISORIES POSSIBLE OR IN EFFECT.
FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON
88/89/99Hazardous weather outlook, Aug 24, 8:55 AM PDT, 18 hours 40 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE PENDLETON OR
855 AM PDT WED AUG 24 2011
UPDATED TODAY PERIOD TO HANDLE SPC SLIGHT RISK DOWNGRADE
ORZ041-042-044-049-050-502-503-505>509-WAZ024-026>030-520-521-
251215-
EASTERN COLUMBIA RIVER GORGE OF OREGON-NORTH CENTRAL OREGON-
LOWER COLUMBIA BASIN OF OREGON-GRANDE RONDE VALLEY-WALLOWA COUNTY-
NORTHERN BLUE MOUNTAINS OF OREGON-
SOUTHERN BLUE MOUNTAINS OF OREGON-JOHN DAY BASIN-OCHOCO-
JOHN DAY HIGHLANDS-
FOOTHILLS OF THE NORTHERN BLUE MOUNTAINS OF OREGON-
FOOTHILLS OF THE SOUTHERN BLUE MOUNTAINS OF OREGON-
EAST SLOPES OF THE OREGON CASCADES-
EASTERN COLUMBIA RIVER GORGE OF WASHINGTON-KITTITAS VALLEY-
YAKIMA VALLEY-LOWER COLUMBIA BASIN OF WASHINGTON-
FOOTHILLS OF THE BLUE MOUNTAINS OF WASHINGTON-
NORTHWEST BLUE MOUNTAINS OF WASHINGTON-
EAST SLOPES OF THE WASHINGTON CASCADES-SIMCOE HIGHLANDS-
855 AM PDT WED AUG 24 2011
THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL AND NORTHEAST OREGON
AS WELL AS SOUTH CENTRAL AND SOUTHEAST WASHINGTON.
.DAY ONE...TODAY AND TONIGHT
THUNDERSTORMS
EAST SLOPES OF THE WASHINGTON CASCADES, SIMCOE HIGHLANDS,
EASTERN COLUMBIA RIVER GORGE OF WASHINGTON, KITTITAS VALLEY,
YAKIMA VALLEY, LOWER COLUMBIA BASIN OF WASHINGTON, FOOTHILLS
OF THE BLUE MOUNTAINS OF WASHINGTON, NORTHWEST BLUE MOUNTAINS
OF WASHINGTON, EASTERN COLUMBIA RIVER GORGE OF OREGON, NORTH
CENTRAL OREGON, EAST SLOPES OF THE OREGON CASCADES, LOWER
COLUMBIA BASIN OF OREGON, FOOTHILLS OF THE NORTHERN BLUE
MOUNTAINS OF OREGON, SOUTHERN BLUE MOUNTAINS OF OREGON,
FOOTHILLS OF THE SOUTHERN BLUE MOUNTAINS OF OREGON
RED FLAG WARNING
FOOTHILLS OF THE BLUE MOUNTAINS OF WASHINGTON, NORTHWEST BLUE
MOUNTAINS OF WASHINGTON, NORTH CENTRAL OREGON, EAST SLOPES OF
THE OREGON CASCADES, GRANDE RONDE VALLEY, WALLOWA COUNTY,
FOOTHILLS OF THE NORTHERN BLUE MOUNTAINS OF OREGON, NORTHERN
BLUE MOUNTAINS OF OREGON, SOUTHERN BLUE MOUNTAINS OF OREGON,
FOOTHILLS OF THE SOUTHERN BLUE MOUNTAINS OF OREGON, JOHN DAY
BASIN, OCHOCO-JOHN DAY HIGHLANDS
CONTACT YOUR LOCAL FOREST OR LAND MANAGEMENT AGENCY FOR
CURRENT FIRE DANGER CONDITIONS IN YOUR AREA.
A WEATHER SYSTEM WILL MOVE ACROSS THE REGION WITH ENOUGH MOISTURE
AND INSTABILITY TO CAUSE SCATTERED THUNDERSTORMS TODAY. THE
STRONGEST THUNDERSTORMS ARE EXPECTED TO BE OVER CENTRAL OREGON AND
ALONG THE CASCADE EAST SLOPES. ALTHOUGH THE STORM PREDICTION CENTER
HAS DOWNGRADED THE WIDESPREAD THREAT FOR SEVERE STORMS, SOME STORMS
ACROSS CENTRAL OREGON MAY PRODUCE PARTICULARLY STRONG WINDS AND HAIL
GREATER THAN ONE-HALF INCH IN DIAMETER.
THESE THUNDERSTORMS ARE EXPECTED TO BE HIGH BASED DUE TO THE DRY AND
VERY WARM AIR AT THE SURFACE. AS SUCH, THEY HAVE THE POTENTIAL TO
PRODUCE ABUNDANT LIGHTNING...YET LITTLE RAINFALL. A RED FLAG
WARNING IS NOW IN EFFECT FROM EARLY THIS AFTERNOON UNTIL LATE THIS
EVENING FOR THUNDERSTORMS WITH ABUNDANT LIGHTNING...WHICH MAY CAUSE
NUMEROUS NEW FIRE STARTS ACROSS THE FIRE WEATHER DISTRICT. PLEASE
REFER TO NWS HAZARD PRODUCT ID PDXRFWPDT FOR MORE DETAILS.
.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY
THUNDERSTORMS THURSDAY
NORTHWEST BLUE MOUNTAINS OF WASHINGTON, NORTH CENTRAL OREGON,
EAST SLOPES OF THE OREGON CASCADES, GRANDE RONDE VALLEY,
WALLOWA COUNTY, NORTHERN BLUE MOUNTAINS OF OREGON, SOUTHERN
BLUE MOUNTAINS OF OREGON, JOHN DAY BASIN, OCHOCO-JOHN DAY
HIGHLANDS
SOME INSTABILITY AND MOISTURE WILL REMAIN OVER THE AREA ON THURSDAY
WHICH MAY RESULT IN AFTERNOON THUNDERSTORMS AGAIN IN SOUTHERN
PORTIONS OF THE FORECAST AREA. THESE THUNDERSTORMS ARE EXPECTED TO
REMAIN WEAK. THERE WILL BE A BETTER CHANCE FOR THUNDERSTORMS ON
FRIDAY AS A STRONG WEATHER SYSTEM MOVES ACROSS THE REGION. THE
OVERALL WEATHER PATTERN IS NOT EXPECTED TO CHANGE WITH AN UPPER
RIDGE OVER THE INLAND WEST AND A TROUGH OFF THE COAST...RESULTING IN
A GENERALLY WARM SOUTHWEST FLOW PATTERN AND CONTINUED VERY WARM
CONDITIONS THROUGH MOST OF THE EXTENDED PERIOD WITH POSSIBLE
THUNDERSTORMS FROM TIME TO TIME.
.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION MAY BE REQUIRED.
WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
GRAPHICAL FORECASTS OF WEATHER HAZARDS OUT TO SEVEN DAYS
ARE DISPLAYED ON THE WORLD WIDE WEB AT:
WWW.WRH.NOAA.GOV/PDT/CURRENTHAZARDS/HWO.HTML
ALL LETTERS IN THE ABOVE URL ARE LOWER CASE.The office that day
Everything else NWS Pendleton, OR issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 24, 5:55 PM PDT | Severe Thunderstorm Warning | PDT | Deschutes | 50 min |
| Aug 24, 7:52 PM PDT | Special Weather Statement | PDT | Crook | 53 min |
| Aug 24, 9:07 PM PDT | Special Weather Statement | PDT | Wheeler | 53 min |
Nearby
Red Flag Warnings in Washington, 2011Red Flag Warnings in Oregon, 2011Every red flag warning in 2011
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.