One product issued by NWS for:
Hazardous Weather Outlook
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE PENDLETON OR 446 AM PDT FRI MAY 24 2013 ORZ041-044-049-050-502-503-505>507-WAZ024-026>030-520-521-251200- EASTERN COLUMBIA RIVER GORGE OF 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- 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- 446 AM PDT FRI MAY 24 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL OREGON...NORTH CENTRAL OREGON...NORTHEAST OREGON...CENTRAL WASHINGTON...SOUTH WASHINGTON...SOUTH CENTRAL WASHINGTON AND SOUTHEAST WASHINGTON. .DAY ONE...TODAY AND TONIGHT THE ATMOSPHERE WILL BECOME UNSTABLE THIS AFTERNOON AND EARLY THIS EVENING AS AN UPPER LOW PRESSURE SYSTEM LINGERS OVER THE AREA THROUGH THE DAY. THIS WILL RESULT IN POSSIBLE AFTERNOON AND EARLY EVENING THUNDERSTORMS. SOME OF THE STRONGER THUNDERSTORMS MAY CONTAIN SMALL HAIL...GUSTY WINDS AND HEAVY RAIN. IN ADDITION THERE WILL BE SNOW SHOWERS OVER CENTRAL OREGON...THE NORTHERN BLUE MOUNTAINS AND IN WALLOWA COUNTY OREGON WHERE 1 TO 3 INCHES OF SNOW MAY ACCUMULATE ABOVE 4000 TO 4500 FEET THIS MORNING. SNOW LEVELS WILL RISE TO 5000 TO 5500 FEET BY AFTERNOON. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY ANOTHER LOW PRESSURE SYSTEM WILL MOVE INTO THE REGION BY LATE SATURDAY AND CONTINUE THROUGH AT LEAST MONDAY. THIS SYSTEM MAY PRODUCE ISOLATED AFTERNOON AND EVENING THUNDERSTORMS AGAIN EACH DAY SATURDAY THROUGH MONDAY OVER EASTERN AND SOUTHERN AREAS. $$