HAZARDOUS WEATHER OUTLOOK Issue Date: 526 AM PDT WED AUG 20 2008Expiration: 500 AM PDT THU AUG 21 2008 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL AND NORTHEAST OREGON AS WELL AS SOUTH CENTRAL AND SOUTHEAST WASHINGTON. .DAY ONE...TODAY AND TONIGHT THUNDERSTORMS NORTHWEST BLUE MOUNTAINS, GRANDE RONDE VALLEY, WALLOWA COUNTY, NORTHERN BLUE MOUNTAINS OF OREGON, SOUTHERN BLUE MOUNTAINS OF OREGON, OCHOCO-JOHN DAY HIGHLANDS AN UNSEASONABLY STRONG COLD FRONT WILL MOVE THROUGH THE AREA BRINGING RAIN TO MUCH OF THE AREA THIS MORNING AND RAIN SHOWERS THIS AFTERNOON AND TONIGHT. THERE WILL BE ENOUGH INSTABILITY AND LIFT FOR A FEW THUNDERSTORMS THIS AFTERNOON AND EVENING OVER NORTHEAST OREGON AND THE NORTHWEST BLUE MOUNTAINS OF WASHINGTON. THE THUNDERSTORMS ARE NOT EXPECTED TO REACH SEVERE LEVELS BUT MAY CONTAIN BRIEF HEAVY RAIN...SMALL HAIL AND BRIEF GUSTY WINDS TO 40 MPH. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. SHOWERY CONDITIONS WILL LINGER THROUGH THURSDAY AFTERNOON THEN A RIDGE WILL BUILD OVER THE AREA FOR DRY WEATHER AND A WARMING TREND THROUGH SUNDAY. ANOTHER COLD FRONT WILL CROSS THE AREA SUNDAY NIGHT AND MONDAY WITH COOLER TEMPERATURES BEING THE MAIN IMPACT. .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...EXCEPT THE H IN CURRENTHAZARDS.
THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL AND NORTHEAST OREGON AS WELL AS SOUTH CENTRAL AND SOUTHEAST WASHINGTON. .DAY ONE...TODAY AND TONIGHT THUNDERSTORMS NORTHWEST BLUE MOUNTAINS, GRANDE RONDE VALLEY, WALLOWA COUNTY, NORTHERN BLUE MOUNTAINS OF OREGON, SOUTHERN BLUE MOUNTAINS OF OREGON, OCHOCO-JOHN DAY HIGHLANDS AN UNSEASONABLY STRONG COLD FRONT WILL MOVE THROUGH THE AREA BRINGING RAIN TO MUCH OF THE AREA THIS MORNING AND RAIN SHOWERS THIS AFTERNOON AND TONIGHT. THERE WILL BE ENOUGH INSTABILITY AND LIFT FOR A FEW THUNDERSTORMS THIS AFTERNOON AND EVENING OVER NORTHEAST OREGON AND THE NORTHWEST BLUE MOUNTAINS OF WASHINGTON. THE THUNDERSTORMS ARE NOT EXPECTED TO REACH SEVERE LEVELS BUT MAY CONTAIN BRIEF HEAVY RAIN...SMALL HAIL AND BRIEF GUSTY WINDS TO 40 MPH. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. SHOWERY CONDITIONS WILL LINGER THROUGH THURSDAY AFTERNOON THEN A RIDGE WILL BUILD OVER THE AREA FOR DRY WEATHER AND A WARMING TREND THROUGH SUNDAY. ANOTHER COLD FRONT WILL CROSS THE AREA SUNDAY NIGHT AND MONDAY WITH COOLER TEMPERATURES BEING THE MAIN IMPACT. .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...EXCEPT THE H IN CURRENTHAZARDS.
