THE WEATHER PREDICTION CENTER
COLLEGE PARK, MD
STORM SUMMARY MESSAGE
STORM SUMMARY NUMBER 04 FOR PACIFIC NORTHWEST AND NORTHERN
INTERMOUNTAIN WEST HEAVY RAINFALL
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
700 PM PST TUE DEC 08 2015
...MODERATE TO HEAVY 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 NORTHERN
CALIFORNIA AND NORTHERN IDAHO.
WINTER STORM WATCHES AND WARNINGS ARE IN EFFECT FOR THE SIERRA
NEVADA RANGE IN CALIFORNIA AND PARTS OF THE INTERMOUNTAIN WEST.
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 600 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 FALLING IN WESTERN
WASHINGTON AND NORTHWESTERN OREGON. LIGHT TO MODERATE RAIN...OR
SNOW IN HIGHER ELEVATIONS...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 600 PM PST TUE DEC 08...
...IDAHO...
COOL CREEK 3.10
SHANGHI SUMMIT 2.80
CRATER MEADOWS 2.50
MULLAN PASS 1.86
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...
TWIN LAKES 2.80
HOODOO BASIN 2.60
TWELVEMILE CREEK 2.50
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
TIDEWATER 3.11
ASTORIA 2.47
...WASHINGTON...
HUCKLEBERRY RIDGE 4.31
JUNE LAKE 4.30
SHEEP CANYON 4.20
SHELTON/SANDERSON FIELD ARPT 3.66
SWIFT CREEK 3.60
ROCK CREEK 3.47
ABERNATHY MTN 3.39
CALAMITY 3.00
OLYMPIA AIRPORT 2.72
SEATTLE/TACOMA INTL ARPT 2.34
HOQUIAM/BOWERMAN AIRPORT 2.28
BELFAIR 3.2 WSW 2.12
VANCOUVER 2.01
RENTON 0.5 SSW 1.67
EASTGATE 1.7 SSW 1.60
QUILLAYUTE 1.60
TACOMA 3.1 NW 1.51
...SELECTED STORM TOTAL SNOWFALL IN INCHES FROM 300 PM PST MON DEC
07 THROUGH 600 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 85
MCALLISTER 5 NNE 63
CUT BANK SIRPORT 58
GREYCLIFF 13 SSW 58
...OREGON...
MOUNT HOOD 1 SE 125
MARYS PEAK 97
PHILOATH 15 WSW 92
HEBO 4 E 85
FLORENCE 13 N 80
DALLAS 10 WSW 79
OCEANSIDE 75
TIDEWATER 69
YACHATS 63
LINCOLN BEACH 1 N 61
RIDGEFIELD 3 SSW 61
PACIFIC CITY 60
WALDPORT 60
NEWPORT 2 S 59
SOUTH BEACH 59
SCHOLLS 3 WSW 56
TILLAMOOK AIRPORT 45
...WASHINGTON...
BONNEVILLE 10 N 86
CASTLE ROCK 15 WNW 83
NASELLE 3 NNE 74
COOK 2 WNW 73
FERNDALE 62
...WYOMING...
SUNLIGHT BASIN 8 E 96
CLARK 5 WNW 86
BUFORD 7 NE 83
CHEYENNE 10 WSW 75
WHEATLAND 9 S 71
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. ADDITIONAL RAINFALL
AMOUNTS RANGING FROM 6 TO 8 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...THE MOISTURE
PLUME WILL SHIFT SOUTHWARD TOWARD THE NORTHERN CALIFORNIA
COAST...BRINGING 8 TO 12 INCHES OF RAIN TO PORTIONS OF
NORTHWESTERN COASTAL CALIFORNIA AND SOUTHWESTERN COASTAL OREGON
THROUGH FRIDAY. 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 100 AM PST. PLEASE REFER TO YOUR LOCAL NATIONAL WEATHER
SERVICE OFFICE FOR ADDITIONAL INFORMATION ON THIS EVENT.
TATE
Last Updated: 958 PM EST TUE DEC 08 2015