539 FLUS46 KPDT 172036 AAA HWOPDT HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE PENDLETON OR 131 PM PDT SAT MAY 17 2008 UPDATED TO REMOVE FLOOD WATCHES ORZ041>044-049-050-501>506-WAZ024-026>030-501-502-181415- 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- 131 PM PDT SAT MAY 17 2008 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL AND NORTHEAST OREGON AS WELL AS SOUTH CENTRAL AND SOUTHEAST WASHINGTON. .DAY ONE...TODAY AND TONIGHT FLOODING EAST SLOPES OF THE CENTRAL CASCADES OF WASHINGTON, KITTITAS VALLEY, YAKIMA VALLEY, LOWER COLUMBIA BASIN OF WASHINGTON, WALLOWA COUNTY VERY WARM TEMPERATURES WILL CONTINUE TODAY WITH RAPID SNOW MELT RUNOFF FROM THE HIGHER ELEVATIONS. THIS WILL CONTINUE TO CAUSE SIGNIFICANT RISES IN RIVERS AND STREAMS THROUGHOUT THE AREA. FLOODING AND/OR BANKFULL LEVELS WILL BE REACHED OR EXCEEDED ON SOME RIVERS THAT ARE MOST PRONE TO FLOODING. CURRENTLY A FLOOD WARNING REMAINS IN EFFECT FOR THE NACHES RIVER FROM CLIFFDELL DOWNSTREAM TO NACHES. THE RIVER IS FORECAST TO RISE AND/OR REMAIN ABOVE FLOOD STAGE TODAY AND TONIGHT AND THREATEN NEARBY AREAS. THE FLOODING IS EXPECTED TO CONTINUE THROUGH MUCH OF NEXT WEEK. FOR MORE DETAILED INFORMATION ON FLOODING IN THIS AREA...PLEASE REFER TO THE NWS PRODUCT PDXFLSPDT [WGUS86 KPDT]. A FLOOD WARNING ALSO REMAINS IN EFFECT FOR THE IMNAHA RIVER AT IMNAHA FROM TODAY THROUGH FRIDAY...WITH MINOR FLOODING POSSIBLE ALONG THE IMNAHA RIVER NEAR THE TOWN OF IMNAHA. PLEASE REFER TO THE NWS PRODUCT PDXFLSPDT [WGUS46 KPDT] FOR MORE DETAILS. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY FLOODING SUNDAY EAST SLOPES OF THE CENTRAL CASCADES OF WASHINGTON, KITTITAS VALLEY, YAKIMA VALLEY, LOWER COLUMBIA BASIN OF WASHINGTON, WALLOWA COUNTY FLOODING MONDAY EAST SLOPES OF THE CENTRAL CASCADES OF WASHINGTON, KITTITAS VALLEY, YAKIMA VALLEY, LOWER COLUMBIA BASIN OF WASHINGTON, WALLOWA COUNTY FLOODING TUESDAY EAST SLOPES OF THE CENTRAL CASCADES OF WASHINGTON, YAKIMA VALLEY, WALLOWA COUNTY FLOODING WEDNESDAY EAST SLOPES OF THE CENTRAL CASCADES OF WASHINGTON, YAKIMA VALLEY, WALLOWA COUNTY FLOODING THURSDAY EAST SLOPES OF THE CENTRAL CASCADES OF WASHINGTON, YAKIMA VALLEY, WALLOWA COUNTY FLOODING FRIDAY EAST SLOPES OF THE CENTRAL CASCADES OF WASHINGTON, YAKIMA VALLEY, WALLOWA COUNTY THE FLOOD WARNING FOR THE NACHES RIVER FROM CLIFFDELL DOWNSTREAM TO THE NORTH END OF THE YAKIMA IS IN EFFECT UNTIL FRIDAY MAY 23. THE FLOOD WARNING FOR THE IMNAHA RIVER AT THE TOWN OF IMNAHA IS ALSO IN EFFECT FROM TODAY UNTIL NEXT FRIDAY MAY 23. FOR MORE DETAILED INFORMATION ON FLOODING OF THESE RIVERS PLEASE REFER TO THE NWS PRODUCT PDXFLSPDT [WGUS86 KPDT]. A FLOOD WATCH REMAINS IN EFFECT FOR THE YAKIMA RIVER FROM PARKER TO NEAR KIONA THROUGH TUESDAY. PLEASE REFER TO THE NWS PRODUCT PDXFFAPDT [WGUS66 KPDT] FOR MORE DETAILS. THE UNSEASONABLE VERY WARM TEMPERATURES WILL CONTINUE THROUGH MONDAY WITH RAPID SNOWMELT RUNOFF CONTINUING. A COLD FRONT WITH COOLER TEMPERATURES AND A CHANCE OF SHOWERS WILL THEN MOVE ACROSS THE REGION ON TUESDAY WITH THE COOLER TEMPERATURES AND A CHANCE OF SHOWERS CONTINUING THROUGH THE REST OF THE WEEK. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL BE LIKELY. 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. $$