THE HYDROMETEOROLOGICAL PREDICTION CENTER

COLLEGE PARK, MD


STORM SUMMARY MESSAGE



STORM SUMMARY NUMBER 01 FOR PACIFIC NORTHWEST HEAVY RAIN AND SNOW
NWS HYDROMETEOROLOGICAL PREDICTION CENTER CAMP SPRINGS MD
700 AM PST MON NOV 19 2012

...MULTI-DAY HEAVY RAIN AND SNOW EVENT CONTINUES FOR THE PACIFIC
NORTHWEST AND NORTHERN CALIFORNIA...

HIGH WIND WARNINGS AND ADVISORIES ARE ALSO IN EFFECT FOR MUCH OF
WASHINGTON... OREGON... NORTHWESTERN IDAHO... AND EXTREME NORTHERN
CALIFORNIA.

FLOOD WARNINGS ARE IN EFFECT FOR EXTREME NORTHWEST OREGON AND
EXTREME SOUTHWEST WASHINGTON. FLOOD WATCHES ARE ALSO IN EFFECT FOR
PORTIONS OF THE CASCADE MOUNTAINS IN NORTHERN OREGON AS WELL AS
PARTS OF NORTHERN IDAHO.

THERE ARE WINTER STORM WARNINGS ISSUED FOR MUCH OF NORTHERN
WASHINGTON... HIGHER ELEVATIONS OF THE NORTHERN CASCADES... AND
EXTREME NORTHERN IDAHO.

FOR A DETAILED GRAPHICAL DEPICTION OF THE LATEST
WATCHES...WARNINGS AND ADVISORIES...PLEASE SEE WWW.WEATHER.GOV

AT 600 AM PST...A STRONG CLOSED UPPER LEVEL VORTEX WAS LOCATED
OVER THE NORTHEAST PACIFIC. IN ASSOCIATION WITH THIS SYSTEM... A
SURFACE LOW WITH A CENTRAL PRESSURE OF 976 MB...28.82 INCHES...
WAS LOCATED OFF THE COAST OF BRITISH COLUMBIA. AN OCCLUDED SYSTEM
EXTENDS FROM THE LOW SOUTHWARD JUST ALONG THE WESTERN CANADIAN AND
NORTHWESTERN UNITED STATES COASTLINES. ACCORDING TO NATIONAL
WEATHER SERVICE DOPPLER RADARS... THE HEAVIEST PRECIPITATION WAS
OCCURING ACROSS THE WESTERN HALF OF WASHINGTON AS WELL AS PORTIONS
OF NORTHWEST OREGON.  SOME ORGANIZED BUT LESS INTENSE
PRECIPITATION IS ALSO FALLING IN EASTERN WASHINGTON AND EXTREME
WESTERN IDAHO.  MOST OF THE PRECIPITATION WAS FALLING AS RAIN
EXCEPT IN THE HIGHER ELEVATIONS OF THE CASCADES AS WELL AS
NORTHERN WASHINGTON STATE.

...SELECTED STORM TOTAL RAINFALL IN INCHES FROM 400 AM PST SAT NOV
17 THROUGH 400 AM PST MON NOV 19...

...CALIFORNIA...
CALLENGE-BROWNSVILLE 1.3 WSW          4.62                    
GRASS VALLEY                          4.32                    
CAZADERO 5.6 W                        3.99                    
SHINGLETON 2.8 NNW                    3.79                    
POLLOCK PINES 0.5 NW                  3.55                    
REDDING 3.8 S                         3.49                    
SANTA CRUZ 6.3 NNE                    3.49                    
NEVADA CITY 3.4 NNW                   3.32                    
ANDERSON 2.6 NE                       3.30                    
BLUE CANYON                           3.26                    
LOS GATON 5.2 SSW                     3.21                    
REDDING MUNI ARPT                     1.87                    

...OREGON...
ASTORIA                               4.67                    
PORT ORFORD 5.0 E                     3.69                    
BROOKINGS 4.2 ENE                     3.17                    
FLORENCE 1.8 NW                       3.08                    
SCAPPOOSE                             2.75                    
GOLD BEACH 0.6 S                      2.64                    
WALDPORT 0.6 N                        2.62                    
BANDON 11.4 S                         2.20                    
BLODGETT 1 N                          2.16                    
STAYTON 6 ENE                         2.07                    
SALEM 3.7 SSW                         2.03                    
PORTLAND 0.8 ENE                      2.02                    
NORTH BEND MUNI ARPT                  1.38                    
CORVALLIS MUNI ARPT                   1.22                    
PORTLAND-TROUTDALE ARPT               1.18                    

...WASHINGTON...
OYSTERVILLE 1 SW                      3.70                    
BRINNON 1.7 WSW                       3.28                    
HOQUIAM/BOWERMAN AIRPORT              2.76                    
QUILLAYUTE                            2.76                    
BREMERTON NATIONAL ARPT               2.33                    
COSMOPOLIS 6.0 SE                     2.25                    
MONTESANO 4.5 SW                      2.13                    
TRACYTON 2.4 WSW                      2.12                    
VANCOUVER 2.1 NW                      2.11                    
OLYMPIA 1.3 S                         2.04                    
KELSO-LONGVIEW AIRPORT                1.96                    
BELFAIR 3.2 WSW                       1.92                    
VANCOUVER                             1.39                    

...SELECTED STORM TOTAL SNOWFALL IN INCHES FROM 400 AM PST SAT NOV
17 THROUGH 400 AM PST MON NOV 19...

...CALIFORNIA...
SODA SPRINGS 1.5 SSW                 12.0                    

...SELECTED PEAK WIND GUSTS IN MILES PER HOUR EARLIER IN THE
EVENT...

...OREGON...
YAQUINA HEAD                          98                    
GARIBALDI                             90                    
HEBO 5 ESE                            82                    
PACIFIC CITY WSW                      75                    
NEWPORT SSW                           66                    
LINCOLN CITY                          64                    

...WASHINGTON...
CRYSTAL MOUNTAIN                      78                    
HURRICANE RIDGE 2 SW                  68                    


THE UPPER LEVEL VORTEX IS FORECASTED TO PUSH SOUTH THEN EAST OVER
THE NEXT COUPLE DAYS.  HEAVY RAIN... WIND... AND HIGHER ELEVATION
SNOW IS EXPECTED TO CONTINUE UNTIL AT LEAST THURSDAY MORNING.  THE
HEAVIEST OF THE PRECIPITATION SHOULD BE CONFINED TO THE COASTLINE
OF WASHINGTON AND OREGON WITH SOME ADDITIONAL ORGANIZED
PRECIPITATION PUSHING FURTHER EAST INTO THE NORTHERN ROCKIES AS
WELL AS SOUTH INTO NORTHERN CALIFORNIA.  RAINFALL TOTALS IN EXCESS
OF 8 INCHES ARE EXPECTED IN WESTERN OREGON WITH SLIGHTLY LOWER
TOTALS FARTHER NORTH AND SOUTH. IN ADDITION... THERE IS A RISK FOR
SOME FLASH FLOODING IN SOUTHWESTERN WASHINGTON AND WESTERN OREGON
ON MONDAY AND NORTHERN CALIFORNIA ON TUESDAY.

THE NEXT STORM SUMMARY WILL BE ISSUED BY THE HYDROMETEOROLOGICAL
PREDICTION CENTER AT 100 PM PST. PLEASE REFER TO YOUR LOCAL
NATIONAL WEATHER SERVICE OFFICE FOR ADDITIONAL INFORMATION ON THIS
EVENT.

MONARSKI




Last Updated: 1001 AM EST MON NOV 19 2012