Alert archive / Oregon / River Flood Warnings in 2012
River Flood Warning 5, NWS Pendleton, OR
NWS Pendleton, OR issued this river flood warning at Apr 23, 2012, 12:04 PM PDT for Wallowa County, Oregon. It took effect at Apr 26, 2012, 7:24 PM PDT. It was in force for 15 hr.
The area
The counties it named.
The facts
- Issued
- Apr 23, 2012, 12:04 PM PDT (19:04 UTC)
- In effect from
- Apr 26, 2012, 7:24 PM PDT
- Expired
- Apr 27, 2012, 10:21 AM PDT
- In force
- 15 hr
- Issued by
- NWS Pendleton, OR
- Flood severity
- Moderate
County Wallowa County, OR
The radar
The Pendleton radar (KPDT), 131 km from the middle of the area, began a volume at 19:02 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 river
Written for the forecast point Imnaha River at Imnaha (IMNO3).
- Action stage
- 5 ft
- Minor stage
- 5.5 ft
- Moderate stage
- 7 ft
- Major stage
- 9 ft
This gauge today: stage, forecast and historic crests
Stage from the USGS instantaneous record, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.
The text
As transmitted, in the capitals the NWS used until 2016.
195 WGUS46 KPDT 231904 FLWPDT BULLETIN - IMMEDIATE BROADCAST REQUESTED FLOOD WARNING NATIONAL WEATHER SERVICE PENDLETON OR 1204 PM PDT MON APR 23 2012 ...THE NATIONAL WEATHER SERVICE IN PENDLETON HAS ISSUED A FLOOD WARNING FOR THE FOLLOWING RIVERS IN OREGON... IMNAHA RIVER AT IMNAHA AFFECTING WALLOWA COUNTY PRECAUTIONARY/PREPAREDNESS ACTIONS... TURN AROUND, DON'T DROWN. NEVER DRIVE CARS...TRUCKS OR SPORT UTILITY VEHICLES THROUGH FLOODED AREAS. THE WATER MAY BE TOO DEEP TO ALLOW FOR SAFE PASSAGE. AS LITTLE AS ONE FOOT OF WATER ON THE ROAD CAN MOVE MOST VEHICLES OFF THE ROAD. ADDITIONAL INFORMATION IS AVAILABLE AT: HTTP://WATER.WEATHER.GOV/AHPS2/INDEX.PHP?WFO=PDT && ORC063-240704- /O.NEW.KPDT.FL.W.0005.120425T1128Z-120429T1925Z/ /IMNO3.2.ER.120425T1128Z.120427T1200Z.120429T1325Z.NO/ 1204 PM PDT MON APR 23 2012 THE NATIONAL WEATHER SERVICE IN PENDLETON HAS ISSUED A * FLOOD WARNING FOR THE IMNAHA RIVER AT IMNAHA. * FROM LATE TUESDAY NIGHT TO SUNDAY AFTERNOON...OR UNTIL THE WARNING IS CANCELLED. * AT 11:15 AM MONDAY THE STAGE WAS 4.7 FEET. * FLOOD STAGE IS 5.5 FEET. * MODERATE FLOODING IS FORECAST. * FORECAST...RISE ABOVE FLOOD STAGE BY WEDNESDAY MORNING AND CONTINUE TO RISE TO NEAR 7.5 FEET BY FRIDAY MORNING. THE RIVER WILL FALL BELOW FLOOD STAGE BY SUNDAY MORNING. $$
13 follow-up statements
132 WGUS86 KPDT 240350 FLSPDT FLOOD STATEMENT NATIONAL WEATHER SERVICE PENDLETON OR 850 PM PDT MON APR 23 2012 ...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN OREGON.. IMNAHA RIVER AT IMNAHA AFFECTING WALLOWA COUNTY PRECAUTIONARY/PREPAREDNESS ACTIONS... TURN AROUND, DON'T DROWN. NEVER DRIVE CARS...TRUCKS OR SPORT UTILITY VEHICLES THROUGH FLOODED AREAS. THE WATER MAY BE TOO DEEP TO ALLOW FOR SAFE PASSAGE. AS LITTLE AS ONE FOOT OF WATER ON THE ROAD CAN MOVE MOST VEHICLES OFF THE ROAD. ADDITIONAL INFORMATION IS AVAILABLE AT: HTTP://WATER.WEATHER.GOV/AHPS2/INDEX.PHP?WFO=PDT && ORC063-241550- /O.CON.KPDT.FL.W.0005.120425T1128Z-120429T1925Z/ /IMNO3.2.ER.120425T1128Z.120427T1200Z.120429T1325Z.NO/ 850 PM PDT MON APR 23 2012 THE FLOOD WARNING CONTINUES FOR THE IMNAHA RIVER AT IMNAHA. * FROM LATE TUESDAY NIGHT TO SUNDAY AFTERNOON. * AT 8:15 PM MONDAY THE STAGE WAS 4.8 FEET. * FLOOD STAGE IS 5.5 FEET. * MODERATE FLOODING IS FORECAST. * FORECAST...RISE ABOVE FLOOD STAGE BY WEDNESDAY MORNING AND CONTINUE TO RISE TO NEAR 7.5 FEET BY FRIDAY MORNING. THE RIVER WILL FALL BELOW FLOOD STAGE BY SUNDAY MORNING. $$
942 WGUS86 KPDT 241315 FLSPDT FLOOD STATEMENT NATIONAL WEATHER SERVICE PENDLETON OR 615 AM PDT TUE APR 24 2012 ...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN OREGON.. IMNAHA RIVER AT IMNAHA AFFECTING WALLOWA COUNTY PRECAUTIONARY/PREPAREDNESS ACTIONS... TURN AROUND, DON'T DROWN. NEVER DRIVE CARS...TRUCKS OR SPORT UTILITY VEHICLES THROUGH FLOODED AREAS. THE WATER MAY BE TOO DEEP TO ALLOW FOR SAFE PASSAGE. AS LITTLE AS ONE FOOT OF WATER ON THE ROAD CAN MOVE MOST VEHICLES OFF THE ROAD. ADDITIONAL INFORMATION IS AVAILABLE AT: HTTP://WATER.WEATHER.GOV/AHPS2/INDEX.PHP?WFO=PDT && ORC063-250115- /O.CON.KPDT.FL.W.0005.120425T1128Z-120429T1925Z/ /IMNO3.2.ER.120425T1128Z.120427T1200Z.120429T1325Z.NO/ 615 AM PDT TUE APR 24 2012 THE FLOOD WARNING CONTINUES FOR THE IMNAHA RIVER AT IMNAHA. * FROM LATE TONIGHT TO SUNDAY AFTERNOON. * AT 5:15 AM TUESDAY THE STAGE WAS 5.1 FEET. * FLOOD STAGE IS 5.5 FEET. * MODERATE FLOODING IS FORECAST. * FORECAST...RISE ABOVE FLOOD STAGE BY EARLY TOMORROW AND CONTINUE TO RISE TO NEAR 7.5 FEET BY FRIDAY MORNING. THE RIVER WILL FALL BELOW FLOOD STAGE BY SUNDAY MORNING. $$
256 WGUS86 KPDT 241849 FLSPDT FLOOD STATEMENT NATIONAL WEATHER SERVICE PENDLETON OR 1149 AM PDT TUE APR 24 2012 ...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN OREGON... IMNAHA RIVER AT IMNAHA AFFECTING WALLOWA COUNTY PRECAUTIONARY/PREPAREDNESS ACTIONS... TURN AROUND, DON'T DROWN. NEVER DRIVE CARS...TRUCKS OR SPORT UTILITY VEHICLES THROUGH FLOODED AREAS. THE WATER MAY BE TOO DEEP TO ALLOW FOR SAFE PASSAGE. AS LITTLE AS ONE FOOT OF WATER ON THE ROAD CAN MOVE MOST VEHICLES OFF THE ROAD. ADDITIONAL INFORMATION IS AVAILABLE AT: HTTP://WATER.WEATHER.GOV/AHPS2/INDEX.PHP?WFO=PDT && ORC063-250649- /O.EXT.KPDT.FL.W.0005.120426T1044Z-120429T1837Z/ /IMNO3.1.ER.120426T1044Z.120427T1800Z.120429T1237Z.NO/ 1149 AM PDT TUE APR 24 2012 THE FLOOD WARNING CONTINUES FOR THE IMNAHA RIVER AT IMNAHA. * FROM LATE WEDNESDAY NIGHT TO SUNDAY MORNING. * AT 11:15 AM TUESDAY THE STAGE WAS 4.9 FEET. * FLOOD STAGE IS 5.5 FEET. * MINOR FLOODING IS FORECAST. * FORECAST...RISE ABOVE FLOOD STAGE BY THURSDAY MORNING AND CONTINUE TO RISE TO NEAR 6.5 FEET BY LATE FRIDAY MORNING. THE RIVER WILL FALL BELOW FLOOD STAGE BY SUNDAY MORNING. $$
427 WGUS86 KPDT 250521 FLSPDT FLOOD STATEMENT NATIONAL WEATHER SERVICE PENDLETON OR 1021 PM PDT TUE APR 24 2012 ...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN OREGON.. IMNAHA RIVER AT IMNAHA AFFECTING WALLOWA COUNTY PRECAUTIONARY/PREPAREDNESS ACTIONS... TURN AROUND, DON'T DROWN. NEVER DRIVE CARS...TRUCKS OR SPORT UTILITY VEHICLES THROUGH FLOODED AREAS. THE WATER MAY BE TOO DEEP TO ALLOW FOR SAFE PASSAGE. AS LITTLE AS ONE FOOT OF WATER ON THE ROAD CAN MOVE MOST VEHICLES OFF THE ROAD. ADDITIONAL INFORMATION IS AVAILABLE AT: HTTP://WATER.WEATHER.GOV/AHPS2/INDEX.PHP?WFO=PDT && ORC063-251721- /O.CON.KPDT.FL.W.0005.120426T1044Z-120429T1837Z/ /IMNO3.1.ER.120426T1044Z.120427T1800Z.120429T1237Z.NO/ 1021 PM PDT TUE APR 24 2012 THE FLOOD WARNING CONTINUES FOR THE IMNAHA RIVER AT IMNAHA. * FROM LATE WEDNESDAY NIGHT TO SUNDAY MORNING. * AT 9:15 PM TUESDAY THE STAGE WAS 5.0 FEET. * FLOOD STAGE IS 5.5 FEET. * MINOR FLOODING IS FORECAST. * FORECAST...RISE ABOVE FLOOD STAGE BY THURSDAY MORNING AND CONTINUE TO RISE TO NEAR 6.5 FEET BY LATE FRIDAY MORNING. THE RIVER WILL FALL BELOW FLOOD STAGE BY SUNDAY MORNING. $$
497 WGUS86 KPDT 251442 FLSPDT FLOOD STATEMENT NATIONAL WEATHER SERVICE PENDLETON OR 742 AM PDT WED APR 25 2012 ...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN WASHINGTON.. NACHES RIVER NEAR CLIFFDELL AFFECTING YAKIMA COUNTY NACHES RIVER NEAR NACHES AFFECTING YAKIMA COUNTY YAKIMA RIVER NEAR PARKER AFFECTING YAKIMA COUNTY PRECAUTIONARY/PREPAREDNESS ACTIONS... TURN AROUND, DON'T DROWN. NEVER DRIVE CARS...TRUCKS OR SPORT UTILITY VEHICLES THROUGH FLOODED AREAS. THE WATER MAY BE TOO DEEP TO ALLOW FOR SAFE PASSAGE. AS LITTLE AS ONE FOOT OF WATER ON THE ROAD CAN MOVE MOST VEHICLES OFF THE ROAD. ADDITIONAL INFORMATION IS AVAILABLE AT: HTTP://WATER.WEATHER.GOV/AHPS2/INDEX.PHP?WFO=PDT && WAC077-260242- /O.CON.KPDT.FL.W.0003.120426T1941Z-120428T0602Z/ /CLFW1.1.ER.120426T1941Z.120427T0600Z.120428T0002Z.UU/ 742 AM PDT WED APR 25 2012 THE FLOOD WARNING CONTINUES FOR THE NACHES RIVER NEAR CLIFFDELL. * FROM THURSDAY AFTERNOON TO FRIDAY EVENING. * AT 7:00 AM WEDNESDAY THE STAGE WAS 30.5 FEET. * FLOOD STAGE IS 31.0 FEET. * MINOR FLOODING IS FORECAST. * FORECAST...RISE ABOVE FLOOD STAGE BY THURSDAY AFTERNOON AND CONTINUE TO RISE TO NEAR 31.1 FEET BY THURSDAY NIGHT. THE RIVER WILL FALL BELOW FLOOD STAGE BY FRIDAY AFTERNOON. $$ WAC077-260242- /O.CON.KPDT.FL.W.0002.000000T0000Z-120429T0949Z/ /NACW1.1.ER.120424T0535Z.120427T0600Z.120429T0349Z.NO/ 742 AM PDT WED APR 25 2012 THE FLOOD WARNING CONTINUES FOR THE NACHES RIVER NEAR NACHES. * UNTIL LATE SATURDAY NIGHT. * AT 6:45 AM WEDNESDAY THE STAGE WAS 18.1 FEET. * FLOOD STAGE IS 17.8 FEET. * MINOR FLOODING IS OCCURRING AND MINOR FLOODING IS FORECAST. * FORECAST...THE RIVER WILL CONTINUE RISING TO NEAR 18.8 FEET BY THURSDAY NIGHT. THE RIVER WILL FALL BELOW FLOOD STAGE SATURDAY EVENING. $$ WAC077-260242- /O.CON.KPDT.FL.W.0004.000000T0000Z-120426T1020Z/ /PARW1.1.ER.120425T0252Z.120425T1800Z.120426T0420Z.NO/ 742 AM PDT WED APR 25 2012 THE FLOOD WARNING CONTINUES FOR THE YAKIMA RIVER NEAR PARKER. * UNTIL LATE TONIGHT. * AT 6:45 AM WEDNESDAY THE STAGE WAS 10.1 FEET. * FLOOD STAGE IS 10.0 FEET. * MINOR FLOODING IS OCCURRING AND MINOR FLOODING IS FORECAST. * FORECAST...THE RIVER WILL CONTINUE RISING TO NEAR 10.2 FEET LATER TODAY. THE RIVER WILL FALL BELOW FLOOD STAGE TONIGHT. $$
245 WGUS86 KPDT 251754 FLSPDT FLOOD STATEMENT NATIONAL WEATHER SERVICE PENDLETON OR 1054 AM PDT WED APR 25 2012 ...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN OREGON... IMNAHA RIVER AT IMNAHA AFFECTING WALLOWA COUNTY PRECAUTIONARY/PREPAREDNESS ACTIONS... TURN AROUND, DON'T DROWN. NEVER DRIVE CARS...TRUCKS OR SPORT UTILITY VEHICLES THROUGH FLOODED AREAS. THE WATER MAY BE TOO DEEP TO ALLOW FOR SAFE PASSAGE. AS LITTLE AS ONE FOOT OF WATER ON THE ROAD CAN MOVE MOST VEHICLES OFF THE ROAD. ADDITIONAL INFORMATION IS AVAILABLE AT: HTTP://WATER.WEATHER.GOV/AHPS2/INDEX.PHP?WFO=PDT && ORC063-260554- /O.EXT.KPDT.FL.W.0005.120427T2141Z-120428T1446Z/ /IMNO3.1.ER.120427T2141Z.120428T0000Z.120428T0846Z.NO/ 1054 AM PDT WED APR 25 2012 THE FLOOD WARNING CONTINUES FOR THE IMNAHA RIVER AT IMNAHA. * FROM FRIDAY AFTERNOON TO SATURDAY MORNING. * AT 10:15 AM WEDNESDAY THE STAGE WAS 4.9 FEET. * FLOOD STAGE IS 5.5 FEET. * MINOR FLOODING IS FORECAST. * FORECAST...RISE ABOVE FLOOD STAGE BY FRIDAY EARLY AFTERNOON AND CONTINUE TO RISE TO NEAR 5.8 FEET BY FRIDAY NIGHT. THE RIVER WILL FALL BELOW FLOOD STAGE BY EARLY SATURDAY MORNING. $$
114 WGUS86 KPDT 260423 FLSPDT FLOOD STATEMENT NATIONAL WEATHER SERVICE PENDLETON OR 923 PM PDT WED APR 25 2012 ...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN OREGON.. IMNAHA RIVER AT IMNAHA AFFECTING WALLOWA COUNTY PRECAUTIONARY/PREPAREDNESS ACTIONS... TURN AROUND, DON'T DROWN. NEVER DRIVE CARS...TRUCKS OR SPORT UTILITY VEHICLES THROUGH FLOODED AREAS. THE WATER MAY BE TOO DEEP TO ALLOW FOR SAFE PASSAGE. AS LITTLE AS ONE FOOT OF WATER ON THE ROAD CAN MOVE MOST VEHICLES OFF THE ROAD. ADDITIONAL INFORMATION IS AVAILABLE AT: HTTP://WATER.WEATHER.GOV/AHPS2/INDEX.PHP?WFO=PDT && ORC063-261623- /O.CON.KPDT.FL.W.0005.120427T2141Z-120428T1446Z/ /IMNO3.1.ER.120427T2141Z.120428T0000Z.120428T0846Z.NO/ 923 PM PDT WED APR 25 2012 THE FLOOD WARNING CONTINUES FOR THE IMNAHA RIVER AT IMNAHA. * FROM FRIDAY AFTERNOON TO SATURDAY MORNING. * AT 8:15 PM WEDNESDAY THE STAGE WAS 4.9 FEET. * FLOOD STAGE IS 5.5 FEET. * MINOR FLOODING IS FORECAST. * FORECAST...RISE ABOVE FLOOD STAGE BY FRIDAY AFTERNOON AND CONTINUE TO RISE TO NEAR 5.5 FEET BY FRIDAY NIGHT. THE RIVER WILL FALL BELOW FLOOD STAGE BY EARLY SATURDAY MORNING. $$
101 WGUS86 KPDT 261321 FLSPDT FLOOD STATEMENT NATIONAL WEATHER SERVICE PENDLETON OR 621 AM PDT THU APR 26 2012 ...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN OREGON... IMNAHA RIVER AT IMNAHA AFFECTING WALLOWA COUNTY ...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN OREGON... AND WASHINGTON.. GRANDE RONDE RIVER AT TROY AFFECTING WALLOWA AND ASOTIN COUNTIES NACHES RIVER NEAR CLIFFDELL AFFECTING YAKIMA COUNTY NACHES RIVER NEAR NACHES AFFECTING YAKIMA COUNTY YAKIMA RIVER NEAR PARKER AFFECTING YAKIMA COUNTY PRECAUTIONARY/PREPAREDNESS ACTIONS... TURN AROUND, DON'T DROWN. NEVER DRIVE CARS...TRUCKS OR SPORT UTILITY VEHICLES THROUGH FLOODED AREAS. THE WATER MAY BE TOO DEEP TO ALLOW FOR SAFE PASSAGE. AS LITTLE AS ONE FOOT OF WATER ON THE ROAD CAN MOVE MOST VEHICLES OFF THE ROAD. ADDITIONAL INFORMATION IS AVAILABLE AT: HTTP://WATER.WEATHER.GOV/AHPS2/INDEX.PHP?WFO=PDT && ORC063-WAC003-270121- /O.CON.KPDT.FL.W.0006.120427T0739Z-120428T1318Z/ /TRYO3.1.ER.120427T0739Z.120427T1800Z.120428T0718Z.NO/ 621 AM PDT THU APR 26 2012 THE FLOOD WARNING CONTINUES FOR THE GRANDE RONDE RIVER AT TROY. * FROM LATE TONIGHT TO SATURDAY MORNING. * AT 6:00 AM THURSDAY THE STAGE WAS 9.0 FEET. * FLOOD STAGE IS 10.0 FEET. * MINOR FLOODING IS FORECAST. * FORECAST...RISE ABOVE FLOOD STAGE BY AFTER MIDNIGHT FRIDAY AND CONTINUE TO RISE TO NEAR 10.4 FEET BY LATE FRIDAY MORNING. THE RIVER WILL FALL BELOW FLOOD STAGE BY EARLY SATURDAY MORNING. $$ ORC063-270121- /O.EXT.KPDT.FL.W.0005.120427T1519Z-120428T2318Z/ /IMNO3.1.ER.120427T1519Z.120428T0000Z.120428T1718Z.NO/ 621 AM PDT THU APR 26 2012 THE FLOOD WARNING CONTINUES FOR THE IMNAHA RIVER AT IMNAHA. * FROM FRIDAY MORNING TO SATURDAY AFTERNOON. * AT 5:15 AM THURSDAY THE STAGE WAS 5.0 FEET. * FLOOD STAGE IS 5.5 FEET. * MINOR FLOODING IS FORECAST. * FORECAST...RISE ABOVE FLOOD STAGE BY FRIDAY MORNING AND CONTINUE TO RISE TO NEAR 5.6 FEET BY FRIDAY AFTERNOON. THE RIVER WILL FALL BELOW FLOOD STAGE BY LATE SATURDAY MORNING. $$ WAC077-270121- /O.CON.KPDT.FL.W.0003.120427T0430Z-120427T1611Z/ /CLFW1.1.ER.120427T0430Z.120427T0600Z.120427T1011Z.UU/ 621 AM PDT THU APR 26 2012 THE FLOOD WARNING CONTINUES FOR THE NACHES RIVER NEAR CLIFFDELL. * FROM THIS EVENING TO FRIDAY MORNING. * AT 6:00 AM THURSDAY THE STAGE WAS 30.5 FEET. * FLOOD STAGE IS 31.0 FEET. * MINOR FLOODING IS FORECAST. * FORECAST...RISE ABOVE FLOOD STAGE BY TONIGHT AND CONTINUE TO RISE TO NEAR 31.0 FEET BY LATE TONIGHT. THE RIVER WILL FALL BELOW FLOOD STAGE BY EARLY FRIDAY MORNING. $$ WAC077-270121- /O.CON.KPDT.FL.W.0002.000000T0000Z-120504T2307Z/ /NACW1.1.ER.120424T0535Z.120427T1200Z.120504T1707Z.NO/ 621 AM PDT THU APR 26 2012 THE FLOOD WARNING CONTINUES FOR THE NACHES RIVER NEAR NACHES. * UNTIL FRIDAY MAY 04. * AT 5:15 AM THURSDAY THE STAGE WAS 18.0 FEET. * FLOOD STAGE IS 17.8 FEET. * MINOR FLOODING IS OCCURRING AND MINOR FLOODING IS FORECAST. * FORECAST...THE RIVER WILL CONTINUE RISING TO NEAR 18.7 FEET BY EARLY FRIDAY MORNING. THE RIVER WILL FALL BELOW FLOOD STAGE BY LATE FRIDAY MORNING. $$ WAC077-270121- /O.CON.KPDT.FL.W.0004.000000T0000Z-120428T2242Z/ /PARW1.1.ER.120425T0252Z.120427T1200Z.120428T1642Z.NO/ 621 AM PDT THU APR 26 2012 THE FLOOD WARNING CONTINUES FOR THE YAKIMA RIVER NEAR PARKER. * UNTIL SATURDAY AFTERNOON. * AT 5:15 AM THURSDAY THE STAGE WAS 9.8 FEET. * FLOOD STAGE IS 10.0 FEET. * MINOR FLOODING IS FORECAST. * FORECAST...RISE ABOVE FLOOD STAGE BY LATE THIS MORNING AND CONTINUE TO RISE TO NEAR 10.6 FEET BY EARLY FRIDAY MORNING. THE RIVER WILL FALL BELOW FLOOD STAGE BY LATE SATURDAY MORNING. $$
699 WGUS86 KPDT 261843 FLSPDT FLOOD STATEMENT NATIONAL WEATHER SERVICE PENDLETON OR 1143 AM PDT THU APR 26 2012 ...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN OREGON... WASHINGTON... GRANDE RONDE RIVER AT TROY AFFECTING WALLOWA AND ASOTIN COUNTIES IMNAHA RIVER AT IMNAHA AFFECTING WALLOWA COUNTY PRECAUTIONARY/PREPAREDNESS ACTIONS... TURN AROUND, DON'T DROWN. NEVER DRIVE CARS...TRUCKS OR SPORT UTILITY VEHICLES THROUGH FLOODED AREAS. THE WATER MAY BE TOO DEEP TO ALLOW FOR SAFE PASSAGE. AS LITTLE AS ONE FOOT OF WATER ON THE ROAD CAN MOVE MOST VEHICLES OFF THE ROAD. ADDITIONAL INFORMATION IS AVAILABLE AT: HTTP://WATER.WEATHER.GOV/AHPS2/INDEX.PHP?WFO=PDT && ORC063-WAC003-270643- /O.EXT.KPDT.FL.W.0006.120427T1534Z-120428T0658Z/ /TRYO3.1.ER.120427T1534Z.120427T1800Z.120428T0058Z.NO/ 1143 AM PDT THU APR 26 2012 THE FLOOD WARNING CONTINUES FOR THE GRANDE RONDE RIVER AT TROY. * FROM FRIDAY MORNING TO FRIDAY EVENING. * AT 11:00 AM THURSDAY THE STAGE WAS 9.1 FEET. * FLOOD STAGE IS 10.0 FEET. * MINOR FLOODING IS FORECAST. * FORECAST...RISE ABOVE FLOOD STAGE BY TOMORROW MORNING AND CONTINUE TO RISE TO NEAR 10.1 FEET BY FRIDAY LATE MORNING. THE RIVER WILL FALL BELOW FLOOD STAGE BY FRIDAY EVENING. $$ ORC063-270643- /O.EXT.KPDT.FL.W.0005.120427T2238Z-120428T0935Z/ /IMNO3.1.ER.120427T2238Z.120428T0000Z.120428T0335Z.NO/ 1143 AM PDT THU APR 26 2012 THE FLOOD WARNING CONTINUES FOR THE IMNAHA RIVER AT IMNAHA. * FROM FRIDAY AFTERNOON TO LATE FRIDAY NIGHT. * AT 11:15 AM THURSDAY THE STAGE WAS 4.9 FEET. * FLOOD STAGE IS 5.5 FEET. * MINOR FLOODING IS FORECAST. * FORECAST...RISE ABOVE FLOOD STAGE BY FRIDAY AFTERNOON AND CONTINUE TO RISE TO NEAR 5.5 FEET BY FRIDAY EVENING. THE RIVER WILL FALL BELOW FLOOD STAGE FRIDAY NIGHT. $$
391 WGUS86 KPDT 262352 FLSPDT FLOOD STATEMENT NATIONAL WEATHER SERVICE PENDLETON OR 452 PM PDT THU APR 26 2012 ...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN OREGON... WASHINGTON... GRANDE RONDE RIVER AT TROY AFFECTING WALLOWA AND ASOTIN COUNTIES IMNAHA RIVER AT IMNAHA AFFECTING WALLOWA COUNTY PRECAUTIONARY/PREPAREDNESS ACTIONS... TURN AROUND, DON'T DROWN. NEVER DRIVE CARS...TRUCKS OR SPORT UTILITY VEHICLES THROUGH FLOODED AREAS. THE WATER MAY BE TOO DEEP TO ALLOW FOR SAFE PASSAGE. AS LITTLE AS ONE FOOT OF WATER ON THE ROAD CAN MOVE MOST VEHICLES OFF THE ROAD. ADDITIONAL INFORMATION IS AVAILABLE AT: HTTP://WATER.WEATHER.GOV/AHPS2/INDEX.PHP?WFO=PDT && ORC063-WAC003-271152- /O.EXT.KPDT.FL.W.0006.120427T0441Z-120428T0654Z/ /TRYO3.1.ER.120427T0441Z.120427T1200Z.120428T0054Z.NO/ 452 PM PDT THU APR 26 2012 THE FLOOD WARNING CONTINUES FOR THE GRANDE RONDE RIVER AT TROY. * FROM THIS EVENING TO FRIDAY EVENING. * AT 4:00 PM THURSDAY THE STAGE WAS 9.2 FEET. * FLOOD STAGE IS 10.0 FEET. * MINOR FLOODING IS FORECAST. * FORECAST...RISE ABOVE FLOOD STAGE BY TONIGHT AND CONTINUE TO RISE TO NEAR 10.3 FEET BY EARLY TOMORROW. THE RIVER WILL FALL BELOW FLOOD STAGE BY TOMORROW AFTERNOON. $$ ORC063-271152- /O.EXT.KPDT.FL.W.0005.120427T0224Z-120428T0005Z/ /IMNO3.1.ER.120427T0224Z.120427T0600Z.120427T1805Z.NO/ 452 PM PDT THU APR 26 2012 THE FLOOD WARNING CONTINUES FOR THE IMNAHA RIVER AT IMNAHA. * UNTIL FRIDAY AFTERNOON. * AT 4:15 PM THURSDAY THE STAGE WAS 5.3 FEET. * FLOOD STAGE IS 5.5 FEET. * MINOR FLOODING IS FORECAST. * FORECAST...RISE ABOVE FLOOD STAGE BY THIS EVENING AND CONTINUE TO RISE TO NEAR 5.7 FEET BY TONIGHT. THE RIVER WILL FALL BELOW FLOOD STAGE BY TOMORROW LATE MORNING. $$
533 WGUS86 KPDT 270510 FLSPDT FLOOD STATEMENT NATIONAL WEATHER SERVICE PENDLETON OR 1010 PM PDT THU APR 26 2012 ...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN OREGON... WASHINGTON.. GRANDE RONDE RIVER AT TROY AFFECTING WALLOWA AND ASOTIN COUNTIES IMNAHA RIVER AT IMNAHA AFFECTING WALLOWA COUNTY PRECAUTIONARY/PREPAREDNESS ACTIONS... TURN AROUND, DON'T DROWN. NEVER DRIVE CARS...TRUCKS OR SPORT UTILITY VEHICLES THROUGH FLOODED AREAS. THE WATER MAY BE TOO DEEP TO ALLOW FOR SAFE PASSAGE. AS LITTLE AS ONE FOOT OF WATER ON THE ROAD CAN MOVE MOST VEHICLES OFF THE ROAD. ADDITIONAL INFORMATION IS AVAILABLE AT: HTTP://WATER.WEATHER.GOV/AHPS2/INDEX.PHP?WFO=PDT && ORC063-WAC003-271710- /O.CON.KPDT.FL.W.0006.000000T0000Z-120428T0654Z/ /TRYO3.1.ER.120427T0544Z.120427T1200Z.120428T0054Z.NO/ 1010 PM PDT THU APR 26 2012 THE FLOOD WARNING CONTINUES FOR THE GRANDE RONDE RIVER AT TROY. * UNTIL FRIDAY EVENING. * AT 10:00 PM THURSDAY THE STAGE WAS 9.6 FEET. * FLOOD STAGE IS 10.0 FEET. * MINOR FLOODING IS FORECAST. * FORECAST...RISE ABOVE FLOOD STAGE BY TONIGHT AND CONTINUE TO RISE TO NEAR 10.3 FEET BY EARLY TOMORROW. THE RIVER WILL FALL BELOW FLOOD STAGE BY TOMORROW AFTERNOON. $$ ORC063-271710- /O.CON.KPDT.FL.W.0005.000000T0000Z-120428T0005Z/ /IMNO3.1.ER.120427T0018Z.120427T0400Z.120427T1805Z.NO/ 1010 PM PDT THU APR 26 2012 THE FLOOD WARNING CONTINUES FOR THE IMNAHA RIVER AT IMNAHA. * UNTIL FRIDAY AFTERNOON. * AT 9:15 PM THURSDAY THE STAGE WAS 5.8 FEET. * FLOOD STAGE IS 5.5 FEET. * MINOR FLOODING IS OCCURRING AND MINOR FLOODING IS FORECAST. * FORECAST...THE RIVER WILL CONTINUE TO FALL TO BELOW FLOOD STAGE BY TOMORROW LATE MORNING. $$
166 WGUS86 KPDT 271134 FLSPDT FLOOD STATEMENT NATIONAL WEATHER SERVICE PENDLETON OR 434 AM PDT FRI APR 27 2012 ...THE FLOOD WARNING IS CANCELLED FOR THE FOLLOWING RIVERS IN WASHINGTON... YAKIMA RIVER NEAR PARKER AFFECTING YAKIMA COUNTY ...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN WASHINGTON... NACHES RIVER NEAR NACHES AFFECTING YAKIMA COUNTY ...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN OREGON... AND WASHINGTON.. GRANDE RONDE RIVER AT TROY AFFECTING WALLOWA AND ASOTIN COUNTIES IMNAHA RIVER AT IMNAHA AFFECTING WALLOWA COUNTY PRECAUTIONARY/PREPAREDNESS ACTIONS... TURN AROUND, DON'T DROWN. NEVER DRIVE CARS...TRUCKS OR SPORT UTILITY VEHICLES THROUGH FLOODED AREAS. THE WATER MAY BE TOO DEEP TO ALLOW FOR SAFE PASSAGE. AS LITTLE AS ONE FOOT OF WATER ON THE ROAD CAN MOVE MOST VEHICLES OFF THE ROAD. ADDITIONAL INFORMATION IS AVAILABLE AT: HTTP://WATER.WEATHER.GOV/AHPS2/INDEX.PHP?WFO=PDT && ORC063-WAC003-272334- /O.CON.KPDT.FL.W.0006.000000T0000Z-120428T0654Z/ /TRYO3.1.ER.120427T1130Z.120427T1200Z.120428T0054Z.NO/ 434 AM PDT FRI APR 27 2012 THE FLOOD WARNING CONTINUES FOR THE GRANDE RONDE RIVER AT TROY. * UNTIL THIS EVENING. * AT 4:00 AM FRIDAY THE STAGE WAS 9.7 FEET. * FLOOD STAGE IS 10.0 FEET. * MINOR FLOODING IS FORECAST. * FORECAST...RISE ABOVE FLOOD STAGE EARLY THIS MORNING AND CONTINUE TO RISE TO NEAR 10.3 FEET EARLY THIS MORNING. THE RIVER WILL FALL BELOW FLOOD STAGE BY LATE THIS AFTERNOON OR EVENING. $$ ORC063-272334- /O.CON.KPDT.FL.W.0005.000000T0000Z-120428T0005Z/ /IMNO3.1.ER.120427T0018Z.120427T0630Z.120427T1805Z.NO/ 434 AM PDT FRI APR 27 2012 THE FLOOD WARNING CONTINUES FOR THE IMNAHA RIVER AT IMNAHA. * UNTIL THIS AFTERNOON. * AT 3:15 AM FRIDAY THE STAGE WAS 5.6 FEET. * FLOOD STAGE IS 5.5 FEET. * MINOR FLOODING IS OCCURRING AND MINOR FLOODING IS FORECAST. * FORECAST...THE RIVER WILL CONTINUE TO FALL TO BELOW FLOOD STAGE BY THIS AFTERNOON OR EVENING. $$ WAC077-272334- /O.EXT.KPDT.FL.W.0002.000000T0000Z-120428T0620Z/ /NACW1.1.ER.120424T0535Z.120426T1445Z.120428T0020Z.NO/ 434 AM PDT FRI APR 27 2012 THE FLOOD WARNING CONTINUES FOR THE NACHES RIVER NEAR NACHES. * UNTIL THIS EVENING. * AT 3:15 AM FRIDAY THE STAGE WAS 17.7 FEET. * FLOOD STAGE IS 17.8 FEET. * MINOR FLOODING IS FORECAST. * FORECAST...RISE ABOVE FLOOD STAGE EARLY THIS MORNING AND CONTINUE TO RISE TO NEAR 17.8 FEET BY THIS MORNING. THE RIVER WILL FALL BELOW FLOOD STAGE BY LATE THIS AFTERNOON OR EVENING. $$ WAC077-271204- /O.CAN.KPDT.FL.W.0004.000000T0000Z-120427T2302Z/ /PARW1.1.ER.120425T0252Z.120425T2215Z.000000T0000Z.NO/ 434 AM PDT FRI APR 27 2012 THE FLOOD WARNING IS CANCELLED FOR THE YAKIMA RIVER NEAR PARKER. * AT 3:15 AM FRIDAY THE STAGE WAS 9.8 FEET. * FLOOD STAGE IS 10.0 FEET. * FORECAST...THE RIVER CRESTED BELOW FLOOD STAGE AT 9.9 FEET. THE RIVER WILL CONTINUE TO FALL TO 9.4 FEET BY EARLY SATURDAY MORNING. $$
352 WGUS86 KPDT 271721 FLSPDT FLOOD STATEMENT NATIONAL WEATHER SERVICE PENDLETON OR 1021 AM PDT FRI APR 27 2012 ...THE FLOOD WARNING IS CANCELLED FOR THE FOLLOWING RIVERS IN OREGON...WASHINGTON... GRANDE RONDE RIVER AT TROY AFFECTING WALLOWA AND ASOTIN COUNTIES IMNAHA RIVER AT IMNAHA AFFECTING WALLOWA COUNTY NACHES RIVER NEAR NACHES AFFECTING YAKIMA COUNTY PRECAUTIONARY/PREPAREDNESS ACTIONS... TURN AROUND, DON'T DROWN. NEVER DRIVE CARS...TRUCKS OR SPORT UTILITY VEHICLES THROUGH FLOODED AREAS. THE WATER MAY BE TOO DEEP TO ALLOW FOR SAFE PASSAGE. AS LITTLE AS ONE FOOT OF WATER ON THE ROAD CAN MOVE MOST VEHICLES OFF THE ROAD. ADDITIONAL INFORMATION IS AVAILABLE AT: HTTP://WATER.WEATHER.GOV/AHPS2/INDEX.PHP?WFO=PDT && ORC063-WAC003-271751- /O.CAN.KPDT.FL.W.0006.000000T0000Z-120428T0654Z/ /TRYO3.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/ 1021 AM PDT FRI APR 27 2012 THE FLOOD WARNING IS CANCELLED FOR THE GRANDE RONDE RIVER AT TROY. * AT 10:00 AM FRIDAY THE STAGE WAS 9.4 FEET. * FLOOD STAGE IS 10.0 FEET. * FORECAST...THE RIVER CRESTED BELOW FLOOD STAGE AT 9.8 FEET. THE RIVER WILL CONTINUE TO FALL TO 9.1 FEET BY EARLY TOMORROW. $$ ORC063-271751- /O.CAN.KPDT.FL.W.0005.000000T0000Z-120428T0005Z/ /IMNO3.1.ER.120427T0018Z.120427T0630Z.120427T1145Z.NO/ 1021 AM PDT FRI APR 27 2012 THE FLOOD WARNING IS CANCELLED FOR THE IMNAHA RIVER AT IMNAHA. * AT 9:15 AM FRIDAY THE STAGE WAS 5.3 FEET. * FLOOD STAGE IS 5.5 FEET. * LEVELS FELL BELOW FLOOD STAGE AT 4:45 AM TODAY. * FORECAST...THE RIVER WILL CONTINUE TO FALL TO 5.2 FEET BY EARLY TOMORROW. $$ WAC077-271751- /O.CAN.KPDT.FL.W.0002.000000T0000Z-120428T0620Z/ /NACW1.1.ER.120424T0535Z.120426T1445Z.120427T0530Z.NO/ 1021 AM PDT FRI APR 27 2012 THE FLOOD WARNING IS CANCELLED FOR THE NACHES RIVER NEAR NACHES. * AT 8:45 AM FRIDAY THE STAGE WAS 17.6 FEET. * FLOOD STAGE IS 17.8 FEET. * LEVELS FELL BELOW FLOOD STAGE AT 10:30 PM THURSDAY. * FORECAST...THE RIVER WILL CONTINUE TO FALL TO 17.1 FEET BY EARLY TOMORROW. $$
What forecasters said that day
The local office's own words before this river flood 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 river flood warning went out at Apr 23, 10:59 AM PDT, 1 hour 5 minutes earlier.
Area forecast discussion, Apr 23, 10:59 AM PDT, 1 hour 5 minutes before
AREA FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE PENDLETON OR 1059 AM PDT MON APR 23 2012 UPDATED AVIATION DISCUSSION .SHORT TERM...UPPER RIDGE OVER THE AREA WITH SOUTHERLY FLOW AND FAIRLY HIGH DEW POINTS TODAY. SATELLITE SHOWING SOME CLOUDINESS OVER THE WASHINGTON CASCADES AND ALSO WALLOWA COUNTY. THIS IS MOVING OFF TO THE NORTHEAST. OTHERWISE SHOULD HAVE SUNNY SKIES THIS MORNING INTO EARLY AFTERNOON THEN EXPECT CONVECTIVE CLOUDS TO DEVELOP WITH SHOWERS AND THUNDERSTORMS DEVELOPING LATE AFTERNOON INTO THE EVENING. AIRMASS REMAINS WARM AND HIGH TEMPERATURES TODAY WILL BE IN THE 80S. MODELS HAVE BEEN CONSISTENT THE PAST FEW DAYS INDICATING THE SHOWERS AND THUNDERSTORMS COULD SPREAD ACROSS MOST IF NOT ALL THE FORECAST AREA OVERNIGHT. CLOUD COVER ASSOCIATED WITH THE PRECIPITATION WILL KEEP LOW TEMPERATURES WARM TONIGHT...MOSTLY IN THE 50S. 94 && .AVIATION...18Z TAFS...VFR CONDITIONS ARE EXPECTED FOR THE NEXT 24 HOURS. CONVECTION WILL DEVELOP AGAIN THIS AFTERNOON AND CONTINUE TONIGHT, THUS LEADING TO SHOWERS AND THUNDERSTORMS OCCURRING IN SOUTH-CENTRAL OREGON AROUND 22Z THIS AFTERNOON AND TRACK NORTHWARD LATE THIS AFTERNOON THROUGH TONIGHT. THESE STORMS HAVE A CHANCE TO AFFECT MOST OF OUR TAF SITES DURING THAT TIME FRAME. DO NOT THINK THUNDERSTORMS WILL OCCUR NEAR OR AT KYKM. THUNDERSTORMS WILL DEVELOP AFTER 21Z THIS AFTERNOON OVER THE BLUE MOUNTAINS AND MOUNTAINS IN CENTRAL AND EAST CENTRAL OREGON EARLY THIS AFTERNOON. BRIEF MVFR CONDITIONS MAY OCCUR IF A SHOWER OR THUNDERSTORM MOVES DIRECTLY OVER A TAF SITE. WINDS WILL GENERALLY REMAIN BELOW 15 KTS, ALTHOUGH THUNDERSTORM OUTFLOW WINDS ASSOCIATED WITH GUST FRONTS COULD PRODUCE A FEW STRONG THUNDERSTORMS WITH SMALL HAIL AND GUSTY WINDS OF 30 TO 45 KTS FOR BRIEF PERIODS. AT THIS POINT IT IS TOO EARLY TO PINPOINT EXACTLY WHERE AND WHEN THE STRONG STORMS WILL OCCUR, BUT KBDN AND KRDM WOULD BE THE MOST LIKELY TAF SITES TO GET HAIL AND HIGHER WIND GUSTS IN VICINITY OF THUNDERSTORMS LATE THIS AFTERNOON AND EARLY THIS EVENING. POLAN .PREVIOUS DISCUSSION... /ISSUED 445 AM PDT MON APR 23 2012/ SHORT TERM...TODAY THROUGH TUESDAY NIGHT...A STRONG HIGH PRESSURE RIDGE OVER THE INTERIOR WEST AND AN UPPER TROUGH OFF THE COAST IS CAUSING A SOUTHWEST FLOW OVER THE FORECAST AREA TODAY. THIS PATTERN WILL PERSIST FOR THE NEXT FEW DAYS. THE UPPER RIDGE AND TROUGH WILL BOTH SLOWLY SHIFT EASTWARD OVER TIME. THE SOUTHWEST FLOW OVER THE FORECAST AREA IS PUMPING UNSTABLE AIR NORTHWARD INTO THE PACIFIC NORTHWEST. THERE WILL BE VARYING AMOUNTS OF MOISTURE AVAILABLE FROM DAY TO DAY FOR CONVECTIVE DEVELOPMENT. THE MOST IMPRESSIVE PARAMETER WITH THIS WEATHER PATTERN IS THE AMOUNT OF INSTABILITY WITH VERY HIGH CAPE VALUES GREATER THAN 2000 J/KG EACH DAY AND LOW LIFTED INDEX VALUES GENERALLY BETWEEN -4 AND -7. EVEN WITH JUST A LITTLE MOISTURE ON SUNDAY THERE WERE STILL SEVERAL IMPRESSIVE CLUSTERS OF THUNDERSTORMS WHICH MOVED ACROSS THE FORECAST AREA. THIS WILL BE THE CASE AGAIN MONDAY AND TUESDAY. 0-6 KM-AGL BULK SHEAR VALUES RANGE FROM 50 TO 60 KTS TODAY AND 45 TO 55 KTS ON TUESDAY. THIS IS ANOTHER REASON THAT TODAY WILL BE MORE ACTIVE THAN TUESDAY...THOUGH THIS DIFFERENCE IS RELATIVELY SMALL BETWEEN THE TWO DAYS. THE AMOUNT OF AVAILABLE MOISTURE FOR CONVECTIVE DEVELOPMENT WILL BE GREATER TODAY THAN ON TUESDAY. AS THE UPPER TROUGH OFF THE COAST SLOWLY MOVES CLOSER AND CLOSER TO THE COAST THE FLOW ALOFT WILL BECOME MORE SOUTH RATHER THAN SOUTHWEST. THIS WILL INCREASE THE FLOW OF SUBTROPICAL MOISTURE AND INSTABILITY NORTHWARD INTO THE FORECAST AREA GOING INTO THE EXTENDED FORECAST PERIOD. ALTHOUGH THE PATTERN IS COMING TOGETHER FOR THUNDERSTORMS AND THUNDERSTORM CLUSTERS MOST...IF NOT ALL...STORMS ARE NOT EXPECTED TO BECOME SEVERE. HOWEVER...SOME COULD BE STRONG WITH SMALL HAIL...GUSTY WINDS AND HEAVY RAIN...ESPECIALLY TODAY THAN TUESDAY. SOME NON-SEVERE STORMS WILL LIKELY BECOME STRONG ENOUGH FOR THE NEED OF SPECIAL WEATHER STATEMENTS FOR THUNDERSTORMS. THE GENERAL POPULATION SHOULD BE AWARE OF THUNDERSTORMS DURING THE NEXT SEVERAL DAYS AND SEEK SHELTER WHEN A THUNDERSTORM MOVES INTO THEIR AREA. TEMPERATURES WILL REMAIN ABOUT 20-25 DEGREES ABOVE NORMAL TODAY AND THEN COOLING TO ABOUT 10-15 DEGREES ABOVE NORMAL ON TUESDAY. THIS COOLING TREND WILL CONTINUE INTO THE EXTENDED FORECAST PERIOD. 88 LONG TERM...WEDNESDAY THROUGH SUNDAY...AN UPPER LOW OVER THE GULF OF ALASKA STILL LOOKS TO DIG SOUTHEAST TOWARDS THE PACIFIC NORTHWEST WEDNESDAY. THIS WOULD RESULT IN THE UPPER FLOW OVER THE REGION AGAIN BECOMING MORE SOUTHERLY. THUS ISOLATED TO SCATTERED SHOWERS WITH ISOLATED THUNDERSTORMS SHOULD AGAIN BE ON TAP FOR WEDNESDAY. THE UPPER LOW LOOKS TO BECOME NEGATIVELY TILTED AS IT MOVES ONSHORE WEDNESDAY NIGHT INTO THURSDAY. THUS THIS SYSTEM'S COLD FRONT WOULD MOVE SLOWLY EASTWARD WEDNESDAY NIGHT THROUGH THURSDAY. THUS WILL KEEP PRECIP CHANCES HIGH WITH SHOWERS CHANGING TO STEADY RAIN AS THE FRONT ADVANCES. WILL KEEP SOME MENTION OF THUNDERSTORMS OVER PORTIONS OF THE AREA WEDNESDAY EVENING DUE TO LINGERING INSTABILITY AHEAD OF THE FRONT. ONSHORE FLOW SHOULD KEEP SOME SHOWERS GOING THURSDAY NIGHT INTO FRIDAY WITH THE BEST CHANCES OVER THE MOUNTAINS. DOWNSLOPE AFFECTS MAY RESULT IN DRYING OVER THE COLUMBIA BASIN, YAKIMA AND KITTITAS VALLEYS, AND THE HIGHWAY 97 CORRIDOR OF CENTRAL OREGON FRIDAY. FOR NOW WILL LEAVE THE SLIGHT CHANCE OF SHOWERS IN THESE AREAS TO KEEP FORECAST CONTINUITY. THERE IS SOME UNCERTAINTY AS TO THE PATTERN NEXT WEEKEND. SOME DATA POINTS TO A CONTINUED ONSHORE FLOW AND MOUNTAIN SHOWERS, WHILE OTHER DATA INDICATES WEAK UPPER RIDGING AND DRIER CONDITIONS. CURRENT FORECAST IS TRENDING TOWARDS THE ONSHORE FLOW SCENARIO AND WILL FOR NOW CONTINUE THIS FORECAST. 90 && .PRELIMINARY POINT TEMPS/POPS... PDT 82 56 72 51 / 20 30 20 20 ALW 82 59 76 55 / 20 30 20 30 PSC 85 57 78 53 / 20 20 20 20 YKM 86 53 74 50 / 20 20 20 20 HRI 84 56 76 52 / 20 20 20 20 ELN 84 52 73 49 / 20 20 20 20 RDM 87 48 72 46 / 30 30 20 20 LGD 82 55 74 47 / 30 30 40 30 GCD 84 51 74 47 / 30 30 30 30 DLS 88 56 73 51 / 20 20 20 20 && .PDT WATCHES/WARNINGS/ADVISORIES... OR...NONE. WA...NONE. && THREAT INDEX TODAY : YELLOW TUESDAY : GREEN WEDNESDAY : 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 94/
Hazardous weather outlook, Apr 23, 5:45 AM PDT, 6 hours 19 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
545 AM PDT MON APR 23 2012
ORZ041-042-044-049-050-502-503-505>509-WAZ024-026>030-520-521-
241100-
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-
545 AM PDT MON APR 23 2012
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,
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, 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
A VERY WARM AND UNSTABLE SOUTHWEST FLOW WILL CONTINUE TODAY WITH
ENOUGH LOW TO MID LEVEL MOISTURE TO ENABLE THUNDERSTORMS TO DEVELOP
IN THE AREAS LISTED ABOVE THIS AFTERNOON AND TONIGHT. SOME
THUNDERSTORMS OR THUNDERSTORM CLUSTERS MAY PERSIST THROUGHOUT MOST
OF THE NIGHT. THOUGH THUNDERSTORMS MAY BE STRONG, WITH SMALL
HAIL...GUSTY WINDS...HEAVY RAIN AND FREQUENT LIGHTNING, SEVERE
THUNDERSTORMS ARE UNLIKELY. RECORD HIGH TEMPERATURES ARE POSSIBLE
FOR MOST OF THE FORECAST AREA TODAY.
.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY
THUNDERSTORMS TUESDAY
EASTERN COLUMBIA RIVER GORGE OF WASHINGTON, 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,
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
THUNDERSTORMS WEDNESDAY
SIMCOE HIGHLANDS, EASTERN COLUMBIA RIVER GORGE OF WASHINGTON,
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, 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
THE UNSTABLE SOUTH TO SOUTHWEST FLOW WILL CONTINUE ON TUESDAY AND
WEDNESDAY. THE FLOW ALOFT WILL TURN MORE TO THE SOUTH AS AN UPPER
TROUGH OFF THE COAST MOVES CLOSER TO THE COAST. THIS WILL INCREASE
THE AMOUNT OF AVAILABLE SUBTROPICAL MOISTURE, THEREFORE INCREASING
THE THUNDERSTORM PROBABILITY FOR THE AREAS LISTED ABOVE, ESPECIALLY
ON WEDNESDAY. AGAIN, EVEN THOUGH SEVERE THUNDERSTORMS ARE UNLIKELY,
SOME THUNDERSTORMS MAY BE STRONG CONTAINING GUSTY WINDS...SMALL
HAIL...HEAVY RAIN AND FREQUENT LIGHTNING. A COOLING TREND WILL TAKE
PLACE EACH DAY WITH TEMPERATURES RETURNING BACK DOWN TO NEAR NORMAL
BY THURSDAY WITH UNSETTLED SHOWERY CONDITIONS PERSISTING.
.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.Nearby
River Flood Warnings in Oregon, 2012Every river flood warning in 2012
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive; the gauge from the NWS water service and the USGS.