[top]
000
WWUS86 KSEW 212307
SPSSEW
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SEATTLE WA
407 PM PDT MON MAY 21 2012
WAZ001-503>519-221200-
SAN JUAN COUNTY-WESTERN WHATCOM COUNTY-SOUTHWEST INTERIOR-
EAST PUGET SOUND LOWLANDS-WESTERN SKAGIT COUNTY-
EVERETT AND VICINITY-SEATTLE/BREMERTON AREA-TACOMA AREA-
ADMIRALTY INLET AREA-HOOD CANAL AREA-LOWER CHEHALIS VALLEY AREA-
OLYMPICS-EASTERN STRAIT OF JUAN DE FUCA-
WESTERN STRAIT OF JUAN DE FUCA-NORTH COAST-CENTRAL COAST-
WEST SLOPES NORTHERN CASCADES AND PASSES-
WEST SLOPES CENTRAL CASCADES AND PASSES-
407 PM PDT MON MAY 21 2012
...A FRONTAL SYSTEM FOLLOWED BY AN UPPER TROUGH WILL BRING A
TRANSITION TO COOLER AND WET WEATHER...
A COLD FRONT WILL MOVE EAST OF THE CASCADES THIS EVENING. AN
UPPER TROUGH WILL FOLLOW THE FRONT TONIGHT AND TUESDAY FOR COOL
AND SHOWERY WEATHER.
THE CHANGE IN THE WEATHER PATTERN WILL BE MOST SIGNIFICANT IN THE
MOUNTAINS. SNOW LEVELS WILL FALL FROM AROUND 6000 FEET THIS
EVENING TO 4000 FEET LATE TONIGHT AND TUESDAY. THE HIGHER
MOUNTAIN PASSES WILL HAVE SNOW AT TIMES BUT ONLY LIGHT ACCUMULATION
IS EXPECTED. UP TO A FOOT OF SNOW COULD FALL ABOVE 6000 FEET.
PEOPLE PLANNING TO VENTURE INTO THE BACKCOUNTRY SHOULD EXPECT MUCH
COOLER CONDITIONS WITH RAIN AND SNOW. SIGNIFICANT SNOWFALL
ACCUMULATIONS ARE LIKELY ABOVE 6000 FEET...ESPECIALLY ON THE CASCADE
VOLCANOES.
$$
WEATHER.GOV/SEATTLE
MERCER
000
WWUS86 KSEW 212307
SPSSEW
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SEATTLE WA
407 PM PDT MON MAY 21 2012
WAZ001-503>519-221200-
SAN JUAN COUNTY-WESTERN WHATCOM COUNTY-SOUTHWEST INTERIOR-
EAST PUGET SOUND LOWLANDS-WESTERN SKAGIT COUNTY-
EVERETT AND VICINITY-SEATTLE/BREMERTON AREA-TACOMA AREA-
ADMIRALTY INLET AREA-HOOD CANAL AREA-LOWER CHEHALIS VALLEY AREA-
OLYMPICS-EASTERN STRAIT OF JUAN DE FUCA-
WESTERN STRAIT OF JUAN DE FUCA-NORTH COAST-CENTRAL COAST-
WEST SLOPES NORTHERN CASCADES AND PASSES-
WEST SLOPES CENTRAL CASCADES AND PASSES-
407 PM PDT MON MAY 21 2012
...A FRONTAL SYSTEM FOLLOWED BY AN UPPER TROUGH WILL BRING A
TRANSITION TO COOLER AND WET WEATHER...
A COLD FRONT WILL MOVE EAST OF THE CASCADES THIS EVENING. AN
UPPER TROUGH WILL FOLLOW THE FRONT TONIGHT AND TUESDAY FOR COOL
AND SHOWERY WEATHER.
THE CHANGE IN THE WEATHER PATTERN WILL BE MOST SIGNIFICANT IN THE
MOUNTAINS. SNOW LEVELS WILL FALL FROM AROUND 6000 FEET THIS
EVENING TO 4000 FEET LATE TONIGHT AND TUESDAY. THE HIGHER
MOUNTAIN PASSES WILL HAVE SNOW AT TIMES BUT ONLY LIGHT ACCUMULATION
IS EXPECTED. UP TO A FOOT OF SNOW COULD FALL ABOVE 6000 FEET.
PEOPLE PLANNING TO VENTURE INTO THE BACKCOUNTRY SHOULD EXPECT MUCH
COOLER CONDITIONS WITH RAIN AND SNOW. SIGNIFICANT SNOWFALL
ACCUMULATIONS ARE LIKELY ABOVE 6000 FEET...ESPECIALLY ON THE CASCADE
VOLCANOES.
$$
WEATHER.GOV/SEATTLE
MERCER
000
WWUS86 KSEW 212300
SPSSEW
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SEATTLE WA
400 PM PDT MON MAY 21 2012
WAZ001-503>519-221200-
SAN JUAN COUNTY-WESTERN WHATCOM COUNTY-SOUTHWEST INTERIOR-
EAST PUGET SOUND LOWLANDS-WESTERN SKAGIT COUNTY-
EVERETT AND VICINITY-SEATTLE/BREMERTON AREA-TACOMA AREA-
ADMIRALTY INLET AREA-HOOD CANAL AREA-LOWER CHEHALIS VALLEY AREA-
OLYMPICS-EASTERN STRAIT OF JUAN DE FUCA-
WESTERN STRAIT OF JUAN DE FUCA-NORTH COAST-CENTRAL COAST-
WEST SLOPES NORTHERN CASCADES AND PASSES-
WEST SLOPES CENTRAL CASCADES AND PASSES-
400 PM PDT MON MAY 21 2012
...A FRONTAL SYSTEM FOLLOWED BY AN UPPER TROUGH WILL BRING A
TRANSITION TO COOLER AND WET WEATHER...
A COLD FRONT WILL MOVE EAST OF THE CASCADES THIS EVENING. AN
UPPER TROUGH WILL FOLLOW THE FRONT TONIGHT AND TUESDAY FOR COOL
AND SHOWERY WEATHER.
THE CHANGE IN THE WEATHER PATTERN WILL BE MOST SIGNIFICANT IN THE
MOUNTAINS. SNOW LEVELS WILL FALL FROM AROUND 6000 FEET THIS
EVENING TO 4000 FEET LATE TONIGHT AND TUESDAY. THE HIGHER
MOUNTAIN PASSES WILL HAVE SNOW AT TIMES BUT ONLY LIGHT ACCUMULATION
IS EXPECTED. UP TO A FOOT OF SNOW COULD FALL ABOVE 6000 FEET.
PEOPLE PLANNING TO VENTURE INTO THE BACKCOUNTRY SHOULD EXPECT MUCH
COOLER CONDITIONS WITH RAIN AND SNOW. SIGNIFICANT SNOWFALL
ACCUMULATIONS ARE LIKELY ABOVE 6000 FEET...ESPECIALLY ON THE CASCADE
VOLCANOES. MERCER
$$
000
WWUS86 KSEW 212300
SPSSEW
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SEATTLE WA
400 PM PDT MON MAY 21 2012
WAZ001-503>519-221200-
SAN JUAN COUNTY-WESTERN WHATCOM COUNTY-SOUTHWEST INTERIOR-
EAST PUGET SOUND LOWLANDS-WESTERN SKAGIT COUNTY-
EVERETT AND VICINITY-SEATTLE/BREMERTON AREA-TACOMA AREA-
ADMIRALTY INLET AREA-HOOD CANAL AREA-LOWER CHEHALIS VALLEY AREA-
OLYMPICS-EASTERN STRAIT OF JUAN DE FUCA-
WESTERN STRAIT OF JUAN DE FUCA-NORTH COAST-CENTRAL COAST-
WEST SLOPES NORTHERN CASCADES AND PASSES-
WEST SLOPES CENTRAL CASCADES AND PASSES-
400 PM PDT MON MAY 21 2012
...A FRONTAL SYSTEM FOLLOWED BY AN UPPER TROUGH WILL BRING A
TRANSITION TO COOLER AND WET WEATHER...
A COLD FRONT WILL MOVE EAST OF THE CASCADES THIS EVENING. AN
UPPER TROUGH WILL FOLLOW THE FRONT TONIGHT AND TUESDAY FOR COOL
AND SHOWERY WEATHER.
THE CHANGE IN THE WEATHER PATTERN WILL BE MOST SIGNIFICANT IN THE
MOUNTAINS. SNOW LEVELS WILL FALL FROM AROUND 6000 FEET THIS
EVENING TO 4000 FEET LATE TONIGHT AND TUESDAY. THE HIGHER
MOUNTAIN PASSES WILL HAVE SNOW AT TIMES BUT ONLY LIGHT ACCUMULATION
IS EXPECTED. UP TO A FOOT OF SNOW COULD FALL ABOVE 6000 FEET.
PEOPLE PLANNING TO VENTURE INTO THE BACKCOUNTRY SHOULD EXPECT MUCH
COOLER CONDITIONS WITH RAIN AND SNOW. SIGNIFICANT SNOWFALL
ACCUMULATIONS ARE LIKELY ABOVE 6000 FEET...ESPECIALLY ON THE CASCADE
VOLCANOES. MERCER
$$
000
WWUS86 KSEW 212300
SPSSEW
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SEATTLE WA
400 PM PDT MON MAY 21 2012
WAZ001-503>519-221200-
SAN JUAN COUNTY-WESTERN WHATCOM COUNTY-SOUTHWEST INTERIOR-
EAST PUGET SOUND LOWLANDS-WESTERN SKAGIT COUNTY-
EVERETT AND VICINITY-SEATTLE/BREMERTON AREA-TACOMA AREA-
ADMIRALTY INLET AREA-HOOD CANAL AREA-LOWER CHEHALIS VALLEY AREA-
OLYMPICS-EASTERN STRAIT OF JUAN DE FUCA-
WESTERN STRAIT OF JUAN DE FUCA-NORTH COAST-CENTRAL COAST-
WEST SLOPES NORTHERN CASCADES AND PASSES-
WEST SLOPES CENTRAL CASCADES AND PASSES-
400 PM PDT MON MAY 21 2012
...A FRONTAL SYSTEM FOLLOWED BY AN UPPER TROUGH WILL BRING A
TRANSITION TO COOLER AND WET WEATHER...
A COLD FRONT WILL MOVE EAST OF THE CASCADES THIS EVENING. AN
UPPER TROUGH WILL FOLLOW THE FRONT TONIGHT AND TUESDAY FOR COOL
AND SHOWERY WEATHER.
THE CHANGE IN THE WEATHER PATTERN WILL BE MOST SIGNIFICANT IN THE
MOUNTAINS. SNOW LEVELS WILL FALL FROM AROUND 6000 FEET THIS
EVENING TO 4000 FEET LATE TONIGHT AND TUESDAY. THE HIGHER
MOUNTAIN PASSES WILL HAVE SNOW AT TIMES BUT ONLY LIGHT ACCUMULATION
IS EXPECTED. UP TO A FOOT OF SNOW COULD FALL ABOVE 6000 FEET.
PEOPLE PLANNING TO VENTURE INTO THE BACKCOUNTRY SHOULD EXPECT MUCH
COOLER CONDITIONS WITH RAIN AND SNOW. SIGNIFICANT SNOWFALL
ACCUMULATIONS ARE LIKELY ABOVE 6000 FEET...ESPECIALLY ON THE CASCADE
VOLCANOES. MERCER
$$
000
WWUS86 KSEW 212300
SPSSEW
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SEATTLE WA
400 PM PDT MON MAY 21 2012
WAZ001-503>519-221200-
SAN JUAN COUNTY-WESTERN WHATCOM COUNTY-SOUTHWEST INTERIOR-
EAST PUGET SOUND LOWLANDS-WESTERN SKAGIT COUNTY-
EVERETT AND VICINITY-SEATTLE/BREMERTON AREA-TACOMA AREA-
ADMIRALTY INLET AREA-HOOD CANAL AREA-LOWER CHEHALIS VALLEY AREA-
OLYMPICS-EASTERN STRAIT OF JUAN DE FUCA-
WESTERN STRAIT OF JUAN DE FUCA-NORTH COAST-CENTRAL COAST-
WEST SLOPES NORTHERN CASCADES AND PASSES-
WEST SLOPES CENTRAL CASCADES AND PASSES-
400 PM PDT MON MAY 21 2012
...A FRONTAL SYSTEM FOLLOWED BY AN UPPER TROUGH WILL BRING A
TRANSITION TO COOLER AND WET WEATHER...
A COLD FRONT WILL MOVE EAST OF THE CASCADES THIS EVENING. AN
UPPER TROUGH WILL FOLLOW THE FRONT TONIGHT AND TUESDAY FOR COOL
AND SHOWERY WEATHER.
THE CHANGE IN THE WEATHER PATTERN WILL BE MOST SIGNIFICANT IN THE
MOUNTAINS. SNOW LEVELS WILL FALL FROM AROUND 6000 FEET THIS
EVENING TO 4000 FEET LATE TONIGHT AND TUESDAY. THE HIGHER
MOUNTAIN PASSES WILL HAVE SNOW AT TIMES BUT ONLY LIGHT ACCUMULATION
IS EXPECTED. UP TO A FOOT OF SNOW COULD FALL ABOVE 6000 FEET.
PEOPLE PLANNING TO VENTURE INTO THE BACKCOUNTRY SHOULD EXPECT MUCH
COOLER CONDITIONS WITH RAIN AND SNOW. SIGNIFICANT SNOWFALL
ACCUMULATIONS ARE LIKELY ABOVE 6000 FEET...ESPECIALLY ON THE CASCADE
VOLCANOES. MERCER
$$
[top]
000
FLUS46 KPDT 211514 AAA
HWOPDT
HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE PENDLETON OR
815 AM PDT MON MAY 21 2012
UPDATED TODAY COVERAGE OF THUNDERSTORMS
ORZ041-042-044-049-050-502-503-505>509-WAZ024-026>030-520-521-
221415-
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-
815 AM PDT MON MAY 21 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
LOWER COLUMBIA BASIN OF WASHINGTON, FOOTHILLS OF THE BLUE
MOUNTAINS OF WASHINGTON, NORTHWEST BLUE MOUNTAINS OF
WASHINGTON, 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
ISOLATED TO SCATTERED SHOWERS WILL CONTINUE THROUGH THE MORNING WITH
A FEW THUNDERSTORMS POSSIBLE OVER THE EASTERN MOUNTAINS. A COLD
FRONT WILL PUSH THROUGH LATER TODAY BRINGING MORE SHOWERS AND
POSSIBLE THUNDERSTORMS.
.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY
THUNDERSTORMS TUESDAY
NORTHWEST BLUE MOUNTAINS OF WASHINGTON, 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
AN UPPER LEVEL DISTURBANCE WILL BE OVER THE REGION TUESDAY WITH MUCH
COLDER AIR ALOFT. THIS WILL PROVIDE A CONTINUAL CHANCE OF RAIN
SHOWERS WITH POSSIBLE THUNDERSTORMS.
ON AND OFF SHOWERS WILL CONTINUE THIS WEEK WITH IMPROVING CONDITIONS
FORECASTED FOR THE HOLIDAY WEEKEND.
.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.
$$
000
FLUS46 KPDT 211220
HWOPDT
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
520 AM PDT MON MAY 21 2012
ORZ041-042-044-049-050-502-503-505>509-WAZ024-026>030-520-521-
221200-
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-
520 AM PDT MON MAY 21 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
SIMCOE HIGHLANDS, YAKIMA VALLEY, LOWER COLUMBIA BASIN OF
WASHINGTON, FOOTHILLS OF THE BLUE MOUNTAINS OF WASHINGTON,
NORTHWEST BLUE MOUNTAINS OF WASHINGTON, 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
ELEVATED INSTABILITY WILL CONTINUE TO AID IN SHOWERS AND
THUNDERSTORMS ACROSS MUCH OF THE FORECAST AREA TODAY. THUNDERSTORM
POTENTIAL WILL BE FAVORED MAINLY OVER THE FOOTHILLS OF THE BLUE
MOUNTAINS EASTWARD...BUT WONT RULE OUT ISOLATED THUNDER WEST OF THE
FOOTHILLS. STRATIFORM RAIN SHOWERS WILL CONTINUE ALONG THE EAST
SLOPES OF THE CASCADES TODAY WITH 24 HOUR RAINFALL AMOUNTS AROUND A
TENTH TO A HALF OF AN INCH ALONG THE HIGHER ELEVATIONS.
A COLD FRONT WILL PUSH THROUGH LATER THIS EVENING STABILIZING THE
ATMOSPHERE...WITH STRATIFORM RAIN EXPECTED TO FOLLOW BEHIND.
BETWEEN AFTERNOON CONVECTIVE SHOWERS AND POST FRONTAL RAIN...AREAS
FROM THE FOOTHILLS EAST COULD SEE AFTERNOON AND EVENING
PRECIPITATION AMOUNTS FROM A TENTH TO A HALF AN INCH.
.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY
THUNDERSTORMS TUESDAY
NORTHWEST BLUE MOUNTAINS OF WASHINGTON, 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
THE UPPER LEVEL DISTURBANCE WILL BE OVERHEAD TUESDAY WITH MUCH
COLDER AIR ALOFT. LOWER ELEVATIONS CAN EXPECT A SLIGHT CHANCE OF
RAIN SHOWERS...AND THE MOUNTAINS CAN EXPECT A CHANCE OF RAIN
SHOWERS. WITH THE UPPER LEVEL TROUGH OVERHEAD ON TUESDAY THUNDER IS
STILL A POSSIBILITY...MAINLY OVER THE MOUNTAINS. SHOWERS THAT MAY
DEVELOP ALONG THE LOWER ELEVATIONS COULD PUT OUT AN ISOLATED RUMBLE
OF THUNDER OR LIGHTNING STRIKE...BUT CONFIDENCE IS NOT HIGH. POST
FRONTAL WINDS WILL PROMOTE BREEZY CONDITIONS TUESDAY.
ON AND OFF SHOWERS WILL CONTINUE THIS WEEK WITH IMPROVING CONDITIONS
FORECASTED FOR THE HOLIDAY WEEKEND.
.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.
$$
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