A strong pressure gradient across the Grande Ronde Valley set up locally very strong winds. Sustained winds of 49 mph near Ladd Canyon and 45 mph at Cove were reported.
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The episode as NWS PDT wrote it up.
A strong pressure gradient across the Grande Ronde Valley set up locally very strong winds. Sustained winds of 49 mph near Ladd Canyon and 45 mph at Cove were reported.
The local office's own words before the first event, 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 the first event at Nov 14, 2:15 PM PST, 45 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PENDLETON OR 215 PM PST WED NOV 14 2007 .SHORT TERM...TONIGHT THROUGH FRIDAY NIGHT. LOW PRESSURE WAS NEARING THE PACNW AND WAS TIGHTENING PRESSURE GRADIENTS CREATING WINDY CONDITIONS AROUND LA GRANDE WHERE A WIND ADVISORY IS IN EFFECT INTO THIS EVENING. THE LOW MOVES INTO CANADA HOWEVER CLOUDS AND MOISTURE SPILL INTO PORTIONS OF THE AREA WITH SOME SHOWERS DEVELOPING OVERNIGHT MAINLY ACROSS THE WESTERN PORTIONS OF THE REGION SUCH AS ALONG AND NEAR THE CASCADES OVERNIGHT. ALSO -SN MAY MIX WITH THE RA IN THE KITTITAS AND YAKIMA VALLEYS WHERE SOME COLD AIR MAY BE TRAPPED. NO ACCUMULATION IS EXPECTED AT THIS TIME. THE SHOWERS MOVE INTO THE REMAINDER OF THE REGION THURSDAY MORNING BEFORE SOME DRIER AIR FILTERS INTO PORTIONS OF THE AREA IN THE AFTERNOON. HOWEVER ANOTHER LOW PRESSURE SYSTEM IS RIGHT ON THE HEELS OF THE FIRST AND MAY BRING ANOTHER ROUND OF SHOWERS THURSDAY NIGHT AND FRIDAY WITH ANOTHER FRIDAY NIGHT. .LONG TERM...SATURDAY THROUGH WEDNESDAY...SPECIFIC TIMING OF DETAILS REMAINS QUESTIONABLE UNDER A WEST/SOUTHWESTERLY FLOW ALOFT. BOTH GFS AND ECMWF SHOW A SYSTEM ON SATURDAY CROSSING THE PACNW, BUT GIVEN SIGNIFICANT DAY TO DAY CONTINUITY REGARDING THE INTENSITY FROM THE GFS, HAVE KEPT POPS TO A LOW END CHANCE. IN ADDITION, DPROG/DT FROM THE GFS OVER THE LAST 5 DAYS WORTH OF RUNS, HAS SHOWN THE PRIMARY STORM TRACK SHIFTING NORTHWARD OVER TIME. DECIDED TO KEEP POPS ON THE LOWER SIDE OF CHANCE IN AREAS EAST OF THE CASCADE EAST SLOPES FOR THE MORNING HOURS AND THEN HIGHER END OF CHANCE FOR THE NORTHEAST MOUNTAINS UNDER A PRESUMED UPSLOPE FLOW. BOTH GFS AND ECMWF SHOW A SECOND REINFORCING SLUG OF MOISTURE COMING OFF THE PACIFIC SUNDAY NIGHT AND MONDAY. THIS TIME BOTH MODELS INDICATE SOME FORM OF RAIN SHADOW, BUT AGAIN WITH THE LACK OF DAY TO DAY CONSISTENCY, DID NOT FEEL COMFORTABLE REMOVING PRECIP WORDING ALTOGETHER. COOLER AIR WILL BEGIN SEEPING INTO THE LOWER ELEVATIONS SUCH THAT A RAIN SNOW MIX BECOMES POSSIBLE MONDAY NIGHT AT LOWER ELEVATIONS WITH ALL SNOW EXPECTED ACROSS THE HIGHER TERRAIN. ON TUESDAY, THE BROAD TROUGH THAT WAS CENTERED OVER THE GULF OF ALASKA SHIFTS EASTWARD INTO CENTRAL CANADA. THIS ALLOWS HIGH PRESSURE TO BUILD OFFSHORE AND PLACED THE REGION UNDER NORTHERLY FLOW ALOFT. BOTH THE ECMWF AND A MAJORITY OF GFS ENSEMBLE MEMBERS CURRENTLY SHOW AN INSIDE SLIDER DROPPING DOWN TO FORM A CLOSED LOW CENTERED NEAR THE FOUR CORNERS REGION. THE ECMWF SHOWED THIS FEATURE YESTERDAY AND CONTINUES TO BE MUCH STRONGER THAN THE GFS. FELT THIS SCENARIO WAS PLAUSIBLE ENOUGH TO MAINTAIN PRECIP WORDING EVERYWHERE EXCEPT THE LOWER COLUMBIA BASIN. THERE SHOULD BE ENOUGH DAYTIME WARMING TO KEEP SNOW CONFINED TO THE HIGHER TERRAIN. COULD SEE SOME IMPACTS CONTINUE ACROSS MUCH OF THE NORTHEASTERN MOUNTAINS UNDER A NORTHERLY LOW AND MIDLEVEL FLOW PATTERN BEFORE SEEING A BREAK IN THE ACTION WEDNESDAY AFTERNOON AND EVENING. TEMPERATURES UNDER THIS NORTHERLY FLOW ARE LIKELY TO BE WELL BELOW SEASONAL NORMS. JBONK && .PREVIOUS AVIATION DISCUSSION...VFR CONDITIONS GENERALLY EXPECTED FOR THE NEXT 24 HOURS. MID-LEVEL DECK WILL REMAIN FOR TODAY. CIGS WILL LOWER TO BETWEEN 6 AND 8 KFT DURING THE OVERNIGHT HOURS WITH VCTY SHOWERS EXCEPT FOR KPSC AROUND SUNRISE TOMORROW. KRDM AND KDLS LOOK TO APPROACH MVFR TOMORROW MORNING AS A COLD FRONT SLOWLY MOVES ACROSS THE CASCADES. JBONK && .PRELIMINARY POINT TEMPS/POPS... PDT 40 53 41 56 / 10 20 40 50 ALW 38 55 43 57 / 10 20 40 50 PSC 32 56 40 59 / 10 10 20 30 YKM 32 55 36 55 / 40 30 30 30 HRI 33 55 38 57 / 10 10 20 30 ELN 30 49 36 53 / 40 30 30 40 RDM 34 57 38 57 / 30 20 30 60 LGD 35 52 39 53 / 10 20 40 60 GCD 37 53 40 58 / 10 20 30 60 DLS 37 55 42 56 / 40 20 40 50 && .PDT WATCHES/WARNINGS/ADVISORIES... OR...WIND ADVISORY UNTIL 8 PM PST THIS EVENING FOR ORZ049. WA...NONE. && TI:GGG FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT... WWW.WEATHER.GOV/PENDLETON 97/87/87
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE PENDLETON OR 510 AM PST WED NOV 14 2007 ORZ041>044-049-050-501>506-WAZ024-026>030-501-502-151300- EASTERN COLUMBIA RIVER GORGE OF OREGON-NORTH CENTRAL OREGON- CENTRAL OREGON-LOWER COLUMBIA BASIN OF OREGON-GRANDE RONDE VALLEY- WALLOWA COUNTY-FOOTHILLS OF THE BLUE MOUNTAINS OF OREGON- NORTHERN BLUE MOUNTAINS OF OREGON- SOUTHERN BLUE MOUNTAINS OF OREGON- NORTHERN WHEELER AND SOUTHERN GILLIAM COUNTIES-JOHN DAY BASIN- OCHOCO-JOHN DAY 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- EAST SLOPES OF THE CENTRAL CASCADES OF WASHINGTON- EAST SLOPES OF THE SOUTHERN CASCADES OF WASHINGTON- 510 AM PST WED NOV 14 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL AND NORTHEAST OREGON AS WELL AS SOUTH CENTRAL AND SOUTHEAST WASHINGTON. .DAY ONE...TODAY AND TONIGHT THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. HIGH PRESSURE WILL KEEP CONDITIONS DRY TODAY. CLOUD COVER WILL INCREASE AHEAD OF THE NEXT WEATHER SYSTEM WHICH WILL MOVE INTO THE AREA TONIGHT. THIS COLD FRONT WILL BRING A CHANCE OF PRECIPITATION OVERNIGHT TO THE REGION. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. UNSETTLED WEATHER WITH FREQUENT WEATHER DISTURBANCES WILL CONTINUE THROUGH THE WEEKEND AND INTO NEXT WEEK. THIS WILL BRING A CHANCE OF PRECIPITATION TO THE REGION EACH DAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME. 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...EXCEPT THE H IN CURRENTHAZARDS.
The national radar mosaic for the moment the first event began.
1 high wind. Local standard time, as filed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Oregon in 2007Every state in 2007This day in weather historyWarnings in Oregon, November 2007
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 62314.