THE HYDROMETEOROLOGICAL PREDICTION CENTER
CAMP SPRINGS, MD
STORM SUMMARY MESSAGE
STORM SUMMARY NUMBER 12 FOR WESTERN U.S. HEAVY PRECIPITATION EVENT
NWS HYDROMETEOROLOGICAL PREDICTION CENTER CAMP SPRINGS MD
100 PM PST TUE DEC 21 2010
...MAJOR HEAVY RAIN AND MOUNTAIN SNOW EVENT CONTINUES FOR THE
WESTERN U.S. AS A SERIES OF MOISTURE-LADEN PACIFIC STORMS MOVE
ASHORE...
FLOOD AND FLASH FLOOD WATCHES...WARNINGS...AND ADVISORIES REMAIN
IN EFFECT FOR MANY OF THE LOWER ELEVATIONS OF CENTRAL AND SOUTHERN
CALIFORNIA...PARTS OF SOUTHERN NEVADA...SOUTHERN UTAH...AND
WESTERN ARIZONA.
IN ADDITION...WINTER STORM WARNINGS ARE IN EFFECT ACROSS THE SAN
GABRIEL AND SAN BERNARDINO MOUNTAINS OF SOUTHERN
CALIFORNIA...ALONG WITH THE ELEVATED TOPOGRAPHY OVER SOUTHERN
NEVADA.
FOR A DETAILED GRAPHICAL DEPICTION OF THE LATEST
WATCHES...WARNINGS AND ADVISORIES...PLEASE SEE WWW.WEATHER.GOV
AT 1200 PM PST...NATIONAL WEATHER SERVICE RADARS AND SURFACE
OBSERVATIONS INDICATED LIGHT TO MODERATE RAIN EXTENDING ACROSS
SOUTHERN CALIFORNIA...SOUTHERN NEVADA...AND WESTERN ARIZONA WHICH
IS ASSOCIATED WITH A PACIFIC COLD FRONT WHICH EARLIER MOVED
ONSHORE. IN ADDITION...A NEW BAND OF RAINFALL WAS NEAR THE COAST
OF EXTREME NORTHERN CALIFORNIA. FARTHER OFF TO THE NORTH AND
EAST...A DEFINITE BREAK WAS NOTED IN THE SHIELD OF PRECIPITATION
ACROSS THE CENTRAL/NORTHERN GREAT BASIN. HOWEVER...ACROSS THE
CENTRAL ROCKIES...LIGHT SNOW WAS FALLING ACROSS AREAS OF SOUTHERN
WYOMING AND WESTERN COLORADO.
...SELECTED STORM TOTAL SNOWFALL IN INCHES FROM 700 PM PST FRI DEC
17 THROUGH 1200 PM PST TUE DEC 21...
...CALIFORNIA...
MAMMOTH LAKES 3 WSW 108.0
MAMMOTH MOUNTAIN TOP 108.0 TO 162
NORTHSTAR 98.0
MAMMOTH MOUNTAIN BASE 85.0
ASPENDELL 1 WNW 74.0
LONE PINE 10 SW 72.3
ASPENDELL 4 SSE 71.0
JUNE MOUNTAIN 69.0
ALPINE MEADOWS 67.0
SQUAW VALLEY 57.0
HOMEWOOD 55.0
KIRKWOOD SKI AREA 52.0
JUNE LAKE 48.0
TRUCKEE 2 W 42.0
BLACKCAP BASIN 33.0
LEE VINING 5.9 NW 32.1
CHARLOTTE LAKE 30.0
CHAGOOPA PLATEAU 29.0
GREEN MOUNTAIN 28.0
OSTRANDER LAKE 27.0
AGNEW PASS 26.0
...COLORADO...
GOTHIC 20.0
WOLF CREEK PASS 1 E 18.0
OAK CREEK 7 WSW 10.6
LEADVILLE 13 NE 10.0
MONARCH PASS 2 NE 10.0
SPICER 1 SSE 10.0
...IDAHO...
KETCHUM 22 NW 22.0
PRESTON 20 NE 18.5
HAILEY 20 ENE 18.0
S ASHTON 6.0
...NEVADA...
HEAVENLY VALLEY 77.0
MOUNT ROSE 65.0
MOUNT ROSE SKI AREA 50.0
INCLINE VILLAGE 1 NE 31.0
RENO 9 W 17.0
CARSON CITY 1.3 NW 12.0
MINDEN 4.2 WSW 10.5
GARDNERVILLE 2 NW 10.3
CARSON CITY 5 S 10.0
VIRGINIA CITY 5 E 8.0
RENO 5.0
...OREGON...
THREE RIVERS 0.7 NNE 12.7
ADEL 19.4 ESE 12.0
BAKER 0.6 ENE 11.2
TERREBONNE 9.4 NW 10.5
MADRAS 6.6 NNW 10.2
WSW CAMP SHERMAN 9.0
HOOD RIVER 8.0
SUNRIVER 8.0
TIMBERLINE LODGE 8.0
WILSON RIVER SUMMIT 8.0
TUMALO 9 NW 7.0
WILLAMEETTE PASS 7.0
...UTAH...
SOLITUDE POWDERHORN 42.0
BRIGHTON CREST 33.0
ALTA 1 N 29.0
PARK CITY JUNIPER PEAK 27.0
PROVO CANYON 24.0
SNOWBASIN MID BOWL 24.0
SPRINGDELL 24.0
SNOWBIRD 18.0
SYNDERVILLE 3 N 13.0
RANDOLPH 10.0
LIBERTY 7.0
HEBER CITY 6.5
EDEN 6.0
LAKETOWN 6.0
SALINA 6.0
...WASHINGTON...
CARSON 7.0
...WYOMING...
NORTH SAND LAKE 34.5
ROB ROY RESERVOIR 2 NE 33.6
BROOKLYN LAKE 32.4
BATTLE LAKE 2 E 31.2
NORTH FRENCH CREEK 31.2
HOG PARK RESERVOIR 3 SW 27.0
BONDURANT 16.7
JACKSON 9.3 NNW 15.5
KEMMERER 36 N 15.0
SPRING CREEK DIVIDE SNOTEL 15.0
E THAYNE 14.3
BLIND BULL SUMMIT SNOTEL 14.0
COKEVILLE 15 NNE 14.0
TRIPLE PEAK SNOTEL 14.0
RYAN PARK 1 SSE 13.5
AFTON 15 S 12.0
...SELECTED STORM TOTAL RAINFALL IN INCHES FROM 700 PM PST FRI DEC
17 THROUGH 1200 PM PST TUE DEC 21...
...CALIFORNIA...
NATURE POINT NEAR BASS LAKE 18.60
TANBARK 16.94
CRESTLINE 5 WNW 16.17
WOFFORD HEIGHTS 15.78
DEVORE 15.62
LYTLE CREEK 2 SSE 15.03
CAMP NELSON 6SW 14.08
THREE PEAKS 13.74
WISHON DAM 13.54
FAIRVIEW 9NW 13.30
MAMMOTH LAKES 12.82
CAMP NELSON 6NW 12.79
OAKHURST 7.5 N 12.65
SANTA BARBARA 1.9 NE 12.39
LAKE ARROWHEAD 3 ENE 12.09
SAN BERNARDINO 5 N 11.74
SILVERADO CANYON 11.73
DEER CREEK DAM 11.06
LAKE KAWEAH 10.95
PORTOLA-GOLD LAKE 10.80
BEARTRAP MEADOW 10.18
PALOMAR MOUNTAIN 9.96
WRIGHTWOOD 3 NW 9.78
NATURE POINT 9.72
DAY CANYON 9.60
CLAREMONT 5 NE 8.73
SAN LUIS OBISPO CO ARPT 8.25
SANTA MARIA 6.94
SANTA MONICA MUNI ARPT 5.93
LOS ANGELES - USC 5.78
SAN FRANCISCO INTL ARPT 2.44
SACRAMENTO EXECUTIVE ARPT 2.17
SAN DIEGO-MONTGOMERY FIELD 1.30
...NEVADA...
GARDNERVILLE 5 W 2.95
RENO 5.6 WSW 2.59
CARSON CITY 1.5 ENE 2.27
...OREGON...
SEXTON SUMMIT 4.28
PORT ORFORD 5 E 4.12
ROGUE RIVER 6 N 3.58
BROOKINGS 4.2 ENE 3.03
GOLD BEACH 4.8 NE 3.02
WILLIAMS 1 N 2.75
ROSEBURG MUNI ARPT 1.52
A SERIES OF MOIST PACIFIC SYSTEMS WILL CONTINUE TO INUNDATE THE
WESTERN U.S. THROUGH THE MIDDLE OF THIS WEEK AS A PLUME OF DEEP
SUBTROPICAL MOISTURE CONTINUES TO STREAM INTO THE REGION.
ADDITIONAL RAINFALL AMOUNTS OF 2 TO 4 INCHES...WITH LOCALIZED
AMOUNTS AS HIGH AS 7 INCHES...CAN BE EXPECTED THROUGH FRIDAY
MORNING. SNOWFALL WILL CONTINUE TO BE MEASURED IN FEET IN SOME OF
THE HIGHER ELEVATIONS OF THE WESTERN U.S...ESPECIALLY IN THE
SIERRA NEVADA RANGE. THE HEAVY SNOW COMBINED WITH STRONG AND
GUSTY WINDS WILL REDUCE VISIBILITIES AND CREATE DANGEROUS TRAVEL
CONDITIONS. THE RAIN AND SNOW WILL CONTINUE THROUGH THE MIDDLE OF
THE WEEK.
THE NEXT STORM SUMMARY WILL BE ISSUED BY THE HYDROMETEOROLOGICAL
PREDICTION CENTER AT 700 PM PST. PLEASE REFER TO YOUR LOCAL
NATIONAL WEATHER SERVICE OFFICE FOR ADDITIONAL INFORMATION ON THIS
EVENT.
RUBIN-OSTER
Last Updated: 400 PM EST TUE DEC 21 2010