THE WEATHER PREDICTION CENTER
COLLEGE PARK, MD
STORM SUMMARY MESSAGE
STORM SUMMARY NUMBER 09 FOR PACIFIC NORTHWEST AND NORTHERN
CALIFORNIA HEAVY RAINFALL
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
100 AM PST THU DEC 10 2015
...LIGHT TO MODERATE RAIN MOVING ACROSS NORTHERN CALIFORNIA AND
EASTERN OREGON...
WINTER STORM WATCHES...WARNINGS...AND WINTER WEATHER ADVISORIES
ARE IN EFFECT FOR THE SIERRA NEVADA RANGE IN CALIFORNIA...THE
OREGON AND WASHINGTON CASCADES...AND THE HIGHER TERRAIN OF 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.
FOR A DETAILED GRAPHICAL DEPICTION OF THE LATEST
WATCHES...WARNINGS AND ADVISORIES...PLEASE SEE WWW.WEATHER.GOV
AT 1200 AM PST...A CLASSIC ATMOSPHERIC RIVER EVENT WAS ONGOING
ACROSS THE PACIFIC NORTHWEST WITH SUBTROPICAL MOISTURE STREAMING
INTO THE REGION COMBINED WITH A SERIES OF UPPER LEVEL
DISTURBANCES. AT THE SURFACE....THE NEXT FRONTAL SYSTEM WAS
APPROACHING THE WEST COAST...WHICH WAS ALSO AIDING IN USHERING
MOISTURE ACROSS THE PACIFIC NORTHWEST REGION. NATIONAL WEATHER
SERVICE DOPPLER RADARS AND SURFACE OBSERVATIONS SHOWED AN AREA OF
MODERATE TO HEAVY RAIN FALLING ACROSS NORTHERN CALIFORNIA AND THE
PACIFIC NORTHWEST. SCATTERED LIGHT RAIN...ALONG WITH SNOW IN
HIGHER ELEVATIONS...WAS ALSO FALLING ACROSS PORTIONS OF THE
INTERMOUNTAIN WEST.
...SELECTED STORM TOTAL RAINFALL IN INCHES FROM 400 PM PST MON DEC
07 THROUGH 1200 AM PST WED DEC 10...
...CALIFORNIA...
CRESCENT CITY/MC NAMARA FIELD 1.95
ARCATA AIRPORT 1.58
GUERNEVILLE 2 WSW 1.36
CAZADERO - HUCKLEBERRY HEIGHT 1.25
VENADO 7 NNW 1.20
MIDDLE PEAK RAWS 1.14
MT. SAINT HELENA 1.06
OCCIDENTAL 1.05
...IDAHO...
BEAR MOUNTAIN 6.70
SCHWEITZER BASIN 5.20
COOL CREEK 4.20
HIDDEN LAKE 4.10
MULLAN PASS 4.02
LOOKOUT 3.50
COLBURN 2 ESE 3.01
SHANGHI SUMMIT 2.80
CRATER MEADOWS 2.50
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...
HOODOO BASIN 4.30
FLATTOP MTN 4.20
TWIN LAKES 3.70
TWELVEMILE CREEK 2.50
NOISY BASIN 1.90
...OREGON...
SADDLE MOUNTAIN 5.90
SOUTH FORK 5.90
ASTORIA AIRPORT 5.47
RED HILL 5.40
SUMMIT 5.30
RYE MOUNTAIN 5.09
LOG CREEK 4.90
BROOKINGS 3.56
WFO PORTLAND ROOFTOP WEATHER 3.35
PORTLAND INTL AIRPORT 3.22
...WASHINGTON...
STEVENS PASS 5.70
TELMA 3 W 5.47
SHELTON/SANDERSON FIELD ARPT 4.89
HUCKLEBERRY RIDGE 4.31
JUNE LAKE 4.30
SHEEP CANYON 4.20
TRINITY SNOTEL 4.20
GLENOMA 4.04
OLYMPIA 3.77
POTLATCH 2 N 3.75
PARK CREEK RIDGE 3.70
SWIFT CREEK 3.60
HOQUIAM/BOWERMAN AIRPORT 3.53
ROCK CREEK 3.47
ABERNATHY MTN 3.39
SEATTLE/TACOMA INTL ARPT 3.33
...SELECTED STORM TOTAL SNOWFALL IN INCHES FROM 400 PM PST MON DEC
07 THROUGH 1200 AM PST WED DEC 10...
...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
...WASHINGTON...
WINTHROP 6.8 NNW 3.7
...WYOMING...
DRIGGS 32 NNE 11.3
PINEDALE 25.9 NNW 5.5
...SELECTED PEAK WIND GUSTS IN MILES PER HOUR EARLIER IN THE
EVENT...
...COLORADO...
BERTHOUD PASS 84
GOLD HILL 2 S 82
...IDAHO...
COLBURN 5 W 66
HUETTER 2 NNE 52
...MONTANA...
EAST GLACIER PARK 8 SE 85
BYNUM 13 W 82
LIVINGSTON 6 ENE 77
CASCADE 76
FORT BENTON 8 SSW 72
BURGESS JUNCTION 1 NW 71
BOZEMAN 11 E 70
DEVON 7 NW 68
RED LODGE 6 WSW 67
MCALLISTER 5 NNE 63
FORT BELKNAP 13 S 62
CUT BANK SIRPORT 58
GREYCLIFF 13 SSW 58
...OREGON...
MOUNT HOOD 1 SE 125
MARYS PEAK 97
PHILOATH 15 WSW 94
OCEANSIDE 88
HEBO 4 E 85
FLORENCE 13 N 80
DALLAS 10 WSW 79
SEA LION CAVES 75
PACIFIC CITY 71
TIDEWATER 69
YACHATS 63
LINCOLN BEACH 1 N 61
RIDGEFIELD 3 SSW 61
WALDPORT 60
NEWPORT 2 S 59
...WASHINGTON...
MISSION RIDGE SKI AREA 100
NORTH BONNEVILLE 10 NW 92
CASTLE ROCK 15 WNW 83
NASELLE 3 NNE 74
COLBURN 5 W 73
COOK 2 WNW 73
THORNTON 3 SW 63
FERNDALE 62
MEGLER 1 NW 59
...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. THE HEAVIEST AXIS OF
RAIN WILL CONCENTRATE OVER NORTHWEST CALIFORNIA THROUGH FRIDAY.
RAINFALL AMOUNTS RANGING FROM 2 TO 4 INCHES OF RAIN...WITH LOCALLY
HIGHER AMOUNTS...MAY BE POSSIBLE ACROSS NORTHWEST COASTAL
CALIFORNIA AND SOUTHWEST OREGON. RAIN WILL ALSO CONTINUE TO FALL
ACROSS THE PACIFIC NORTHWEST WHERE ANOTHER 2 TO 5 INCHES OF RAIN
MAY BE POSSIBLE THROUGH THE REST OF THE WEEK...ESPECIALLY IN AREAS
WITH FAVORABLE UPSLOPE. ALL OF THIS HEAVY RAINFALL COULD LEAD TO
SIGNIFICANT FLOODING ALONG MUCH OF THE NORTHWEST COAST. 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 AM PST. PLEASE REFER TO YOUR LOCAL NATIONAL WEATHER
SERVICE OFFICE FOR ADDITIONAL INFORMATION ON THIS EVENT.
FANNING
Last Updated: 341 AM EST THU DEC 10 2015