STORM SUMMARY NUMBER 03 FOR PACIFIC NORTHWEST AND NORTHERN
INTERMOUNTAIN WEST HEAVY RAINFALL
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
100 PM PST TUE DEC 08 2015

...MODERATE RAIN FALLING ACROSS THE PACIFIC NORTHWEST AND INTO THE
INTERMOUNTAIN WEST... 

FLOOD WATCHES...WARNINGS...AND FLOOD ADVISORIES ARE IN EFFECT FOR
PORTIONS OF THE PACIFIC NORTHWEST AS WELL AS PARTS OF NORTHWEST
COASTAL CALIFORNIA AND NORTHERN IDAHO.

WINTER STORM WATCHES ARE IN EFFECT FOR THE SIERRA NEVADA RANGE IN
CALIFORNIA AND CENTRAL IDAHO.

HIGH WIND WATCHES...WARNINGS...AND WIND ADVISORIES ARE IN EFFECT
FOR PORTIONS OF THE NORTHWEST U.S....ESPECIALLY IN THE HIGHER
TERRAIN.

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

AT 1200 PM PST...A CLASSIC ATMOSPHERIC RIVER EVENT WAS ONGOING
ACROSS THE PACIFIC NORTHWEST WITH SUBTROPICAL MOISTURE STREAMING
INTO THE REGION COMBINED WITH A SERIES OF DISTURBANCES IN THE
UPPER LEVELS. NATIONAL WEATHER SERVICE DOPPLER RADARS AND SURFACE
OBSERVATIONS SHOWED MODERATE TO HEAVY RAIN MOVING INTO WESTERN
WASHINGTON AND NORTHWESTERN OREGON. LIGHT TO MODERATE RAIN OR SNOW
WAS ALSO FALLING ACROSS PORTIONS OF THE NORTHERN INTERMOUNTAIN
WEST AND NORTHERN ROCKIES.

...SELECTED STORM TOTAL RAINFALL IN INCHES FROM 300 PM PST MON DEC
07 THROUGH 1200 PM PST TUE DEC 08...

...IDAHO...
COOL CREEK                            2.40                    
HEMLOCK BUTTE                         1.80                    
PIERCE                                1.73                    
LOLO PASS                             1.70                    
LOWMAN 9.6 ENE                        1.57                    
GARDEN VALLEY 2.7 NW                  1.56                    
OROFINO 3 NE                          1.16                    

...MONTANA...
NOISY BASIN                           1.90                    

...OREGON...
LEES CAMP                             7.50                    
NORTH FORK                            6.20                    
SADDLE MOUNTAIN                       5.90                    
SOUTH FORK                            5.90                    
HEBO 4 ESE                            5.75                    
RED HILL                              5.40                    
RYE MOUNTAIN                          5.09                    
LITTLE MEADOWS                        5.00                    
CANNIBAL MOUNTAIN                     4.96                    
NEHALEM RIVER NR FOSS                 4.91                    
LOG CREEK                             4.90                    
SEINE CREEK                           4.80                    
BROOKINGS                             3.56                    
WFO PORTLAND ROOFTOP WEATHER          3.35                    
PORTLAND INTL AIRPORT                 3.22                    

...WASHINGTON...
SHELTON/SANDERSON FIELD ARPT          2.50                    
BELFAIR 3.2 WSW                       2.12                    
VANCOUVER 2.1 NW                      1.96                    
OLYMPIA AIRPORT                       1.68                    
RENTON 0.5 SSW                        1.67                    
EASTGATE 1.7 SSW                      1.60                    
QUILLAYUTE                            1.55                    
SEATTLE/TACOMA INTL ARPT              1.54                    
TACOMA 3.1 NW                         1.51                    

...SELECTED STORM TOTAL SNOWFALL IN INCHES FROM 300 PM PST MON DEC
07 THROUGH 1200 PM PST TUE DEC 08...

...IDAHO...
KETCHUM 22 NW                        15.2                    
ISLAND PARK 8 NW                     13.2                    
STANLEY 16 NW                        10.4                    
FAIRFIELD 10 NNW                      8.3                    
HAILEY 21 ENE                         7.1                    
ATLANTA 12 NW                         6.8                    
BURLEY 18 SE                          5.8                    
ARCO 33 WNW                           4.6                    
MACKAY 32 NE                          4.1                    
CHALLIS 27 NNE                        3.2                    
LAVA HOT SPRINGS 10 SSE               2.4                    
PRESTON 20 NE                         2.3                    

...MONTANA...
ISLAND PARK 16 NE                    19.8                    
WEST YELLOWSTONE 6 S                 10.4                    

...UTAH...
GARDEN CITY 4 SW                      2.3                    
ALMO 17 SE                            1.5                    

...WASHINGTON...
WINTHROP 6.8 NNW                      3.7                    
LEAVENWORTH 12.4 N                    1.0                    

...WYOMING...
DRIGGS 32 NNE                         9.0                    

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

...COLORADO...
BERTHOUD PASS                         84                    
GOLD HILL 2 S                         82                    

...MONTANA...
EAST GLACIER PARK 8 SE                73                    
MCALLISTER 5 NNE                      63                    
GREYCLIFF 13 SSW                      58                    

...OREGON...
PHILOATH 15 WSW                       92                    
HEBO 4 E                              85                    
FLORENCE 13 N                         80                    
DALLAS 10 WSW                         79                    
OCEANSIDE                             75                    
MOUNT HOOD 2 SSE                      73                    
TIDEWATER                             69                    
YACHATS                               63                    
LINCOLN BEACH 1 N                     61                    
PACIFIC CITY                          60                    
WALDPORT                              60                    
NEWPORT 2 S                           59                    
SOUTH BEACH                           59                    
SCHOLLS 3 WSW                         56                    

...WASHINGTON...
BONNEVILLE 10 N                       86                    
CASTLE ROCK 15 WNW                    83                    
COOK 2 WNW                            73                    
FERNDALE                              62                    

...WYOMING...
CHEYENNE 10 WSW                       75                    
WHEATLAND 9 S                         71                    
BUFORD 2 W                            70                    
WHITAKER                              67                    
ARLINGTON 7 ESE                       66                    
ELK MOUNTAIN 7 NW                     60                    
GLENROCK 2 SSE                        60                    


A SERIES OF UPPER LEVEL DISTURBANCES WILL MOVE ACROSS THE PACIFIC
NORTHWEST AND THE INTERMOUNTAIN WEST OVER THE NEXT FEW DAYS AS
MOISTURE CONTINUES TO FEED INTO THE REGION. RAINFALL AMOUNTS
RANGING FROM 6 TO 10 INCHES...WITH LOCALLY HIGHER AMOUNTS...CAN BE
EXPECTED FOR MUCH OF WESTERN WASHINGTON AND OREGON THROUGH
THURSDAY. THIS COULD LEAD TO SIGNIFICANT FLOODING ACROSS PARTS OF
THE REGION. BY WEDNESDAY EVENING AND INTO THURSDAY MORNING...THE
MOISTURE PLUME WILL SHIFT SOUTHWARD TOWARD THE NORTHERN CALIFORNIA
COAST BRINGING ANOTHER 8 TO 12 INCHES OF RAIN TO PORTIONS OF
NORTHWEST COASTAL CALIFORNIA. IN ADDITION TO THE RAINFALL...HEAVY
SNOWFALL CAN BE EXPECTED ACROSS THE NORTHERN WASHINGTON
CASCADES...THE HIGHER ELEVATIONS OF THE NORTHERN INTERMOUNTAIN
WEST...AS WELL AS THE SIERRA NEVADA RANGE OF CALIFORNIA. 

THE NEXT STORM SUMMARY WILL BE ISSUED BY THE WEATHER PREDICTION
CENTER AT 700 PM PST. PLEASE REFER TO YOUR LOCAL NATIONAL WEATHER
SERVICE OFFICE FOR ADDITIONAL INFORMATION ON THIS EVENT.

TATE