UPDATED DAY ONE DISCUSSION
ORZ041-042-044-049-050-502-503-505>509-WAZ024-026>030-520-521-
191215-
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-
115 PM PDT TUE JUN 18 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
A LARGE UPPER LOW WILL CONTINUE TO MOVE TOWARDS THE PACIFIC
NORTHWEST COAST AND WILL COME ASHORE LATE TONIGHT. DISTURBANCES
ROTATING AROUND THE LOW ALONG WITH DAYTIME HEATING WILL CAUSE THE
DEVELOPMENT OF SCATTERED SHOWERS AND THUNDERSTORMS THROUGH TONIGHT.
A FEW THUNDERSTORMS MAY BRING PENNY TO NICKEL SIZE HAIL AND WIND
GUSTS TO 50 MPH...MAINLY IN EASTERN GRANT, UNION, AND WALLOWA
COUNTIES.
.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY
THE UPPER LOW WILL CROSS THE AREA ON WEDNESDAY WITH A CHANCE OF
SHOWERS AND A SLIGHT CHANCE OF AFTERNOON AND EVENING
THUNDERSTORMS. THE LOW WILL TRACK OFF TO THE NORTHEAST THURSDAY
AND FRIDAY WITH A CHANCE OF SHOWERS EACH DAY AND A SLIGHT CHANCE
OF THUNDERSTORMS ALONG THE HIGHER TERRAIN OF WALLOWA COUNTY.
SATURDAY AND SUNDAY WEAK HIGH PRESSURE WILL LEAD TO DRY AND FAIR
CONDITIONS. ANOTHER DISTURBANCE WILL MOVE INTO THE AREA ON MONDAY
WITH A SLIGHT CHANCE OF SHOWERS AND A SLIGHT CHANCE OF AFTERNOON
THUNDERSTORMS IN THE EASTERN OREGON MOUNTAINS.