THE HYDROMETEOROLOGICAL PREDICTION CENTER
CAMP SPRINGS, MD
STORM SUMMARY MESSAGE
STORM SUMMARY NUMBER 6 FOR WESTERN U.S. HEAVY PRECIPITATION EVENT
NWS HYDROMETEOROLOGICAL PREDICTION CENTER CAMP SPRINGS MD
100 AM PST MON DEC 20 2010
...MAJOR HEAVY RAIN AND MOUNTAIN SNOW EVENT CONTINUES FOR THE WEST
COAST AS A SERIES OF MOISTURE-LADEN PACIFIC STORMS MOVE ASHORE...
WINTER STORM WARNINGS AND WINTER WEATHER ADVISORIES ARE IN EFFECT
FOR MUCH OF INTERIOR OREGON...THE MOUNTAINOUS AREAS OF CENTRAL AND
NORTHERN CALIFORNIA...AND EXTENDING INTO NORTHERN PORTIONS OF THE
INTER-MOUNTAIN WEST.
FLOOD AND FLASH FLOOD WATCHES AND WARNINGS ARE ALSO IN EFFECT FOR
PORTIONS OF SOUTHERN UTAH.
FLOOD AND FLASH FLOOD WATCHES...WARNINGS...AND ADVISORIES HAVE
BEEN ISSUED FOR MANY OF THE LOWER ELEVATIONS OF CENTRAL AND INTO
SOUTHERN CALIFORNIA...INCLUDING THE CENTRAL VALLEY.
FOR A DETAILED GRAPHICAL DEPICTION OF THE LATEST
WATCHES...WARNINGS AND ADVISORIES...PLEASE SEE WWW.WEATHER.GOV
AT 1200 AM PST...NATIONAL WEATHER SERVICE RADARS AND SURFACE
OBSERVATIONS INDICATED A WIDESPREAD AREA OF MODERATE TO HEAVY RAIN
OVER MUCH OF SOUTHERN CALIFORNIA. PATCHY AREAS OF MODERATE
PRECIPITATION WERE NOTED ALONG MOST OF THE U.S. WEST COAST AND
THROUGHOUT THE REST OF THE INTER-MOUNTAIN WEST. WIDESPREAD HEAVY
SNOW WAS REPORTED IN THE HIGHER ELEVATIONS OF THE SIERRA NEVADA
AND OTHER NEARBY MOUNTAIN RANGES...WITH BLIZZARD CONDITIONS ALONG
MOUNTAIN CRESTS.
...SELECTED STORM TOTAL SNOWFALL IN INCHES FROM 700 PM PST FRI DEC
17 THROUGH 1200 AM PST MON DEC 20...
...CALIFORNIA...
MAMMOTH LAKES 3 WSW 108.0
ALPINE MEADOWS 53.0
KIRKWOOD SKI AREA 52.0
ASPENDELL 1 WNW 51.0
JUNE LAKE 48.0
TRUCKEE 2 W 42.0
BLACKCAP BASIN 33.0
CHARLOTTE LAKE 30.0
CHAGOOPA PLATEAU 29.0
GREEN MOUNTAIN 28.0
OSTRANDER LAKE 27.0
AGNEW PASS 26.0
TENAYA LAKE 25.0
SQUAW VALLEY 24.0
...COLORADO...
GOTHIC 20.0
LEADVILLE 2 NE 4.7
...IDAHO...
KETCHUM 22 NW 22.0
PRESTON 20 NE 18.5
HAILEY 20 ENE 18.0
HAILEY 7.0
...NEVADA...
MOUNT ROSE SKI AREA 50.0
INCLINE VILLAGE 1 NE 21.0
HEAVENLY VALLEY 20.0
GARDNERVILLE 2 NW 10.3
CARSON CITY 5 S 10.0
VIRGINIA CITY 5 E 8.0
RENO 5.0
...OREGON...
THREE RIVERS 1 N 12.0
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...
PROVO CANYON 24.0
BRIGHTON CREST 22.0
SNOWBASIN MID BOWL 19.0
ALTA 17.0
PARK CITY JUNIPER PEAK 17.0
PARK CITY JUPITER PEAK 17.0
...WASHINGTON...
CARSON 7.0
...WYOMING...
BONDURANT 16.7
BATTLE LAKE 2 E 16.5
NORTH FRENCH CREEK 15.0
SPRING CREEK DIVIDE SNOTEL 15.0
BLIND BULL SUMMIT SNOTEL 14.0
TRIPLE PEAK SNOTEL 14.0
ROB ROY RESERVOIR 2 NE 13.5
RYAN PARK 1 SSE 13.5
BROOKLYN LAKE 12.0
SAND LAKE 10.5
HOG PARK RESERVOIR 4 NW 9.6
...SELECTED STORM TOTAL RAINFALL IN INCHES FROM 700 PM PST FRI DEC
17 THROUGH 1200 AM PST MON DEC 20...
...ARIZONA...
BLACK ROCK 1.33
...CALIFORNIA...
THREE PEAKS 13.74
LAKE KAWEAH 10.95
BEARTRAP MEADOW 10.18
NATURE POINT 9.72
MT UMUNHUM 9.57
JERSEYDALE 8.00
BEN LOMOND RAWS 7.87
GOAT MOUNTAIN 7.40
BLUE CANYON 7.29
SAN LUIS OBISPO CO ARPT 6.79
BOULDER CREEK 6.70
OAK CREEK 6.32
LOMA PRIETA 5.87
SANTA MARIA PUBLIC APT 5.06
OXNARD AIRPORT 4.83
SANTA MONICA MUNI ARPT 4.10
SANTA BARBARA MUNI ARPT 3.64
LOS ANGELES INTL ARPT 3.38
SAN FRANCISCO DOWNTOWN 2.20
...NEVADA...
MT CHARLESTON - RAINBOW CANYON 7.00
MOUNT ROSE SKI AREA 3.90
GARDEN SPRING 3.58
...OREGON...
SEXTON SUMMIT 3.10
...SELECTED PEAK WIND GUSTS IN MILES PER HOUR EARLIER IN THE
EVENT...
...CALIFORNIA...
MAMMOTH LAKES 4 W 164
ALPINE MEADOWS 2 W 155
ALPINE MEADOWS SUMMIT 152
SOUTH LAKE TAHOE 68
TRUCKEE 63
BLUE CANYON 44
MATHER AFB/SACRAMENTO 44
SANBERG 44
RED BLUFF MUNI ARPT 43
SAN FRANCISCO INTL ARPT 41
...COLORADO...
WALSENBURG 9 NNW 64
...IDAHO...
TWIN FALLS 61
CALDWELL 41
...NEVADA...
VIRGINIA PEAK 122
PYRAMID LAKE 1 W 94
RUBY VALLEY 69
GIBBS RANCH 10 WSW 64
JIGGS 10 WNW 63
...UTAH...
OGDEN PEAK 77
SNOWBASIN - WILDCAT 66
RED SPUR 57
OTTER PEAK 55
A SERIES OF MOIST PACIFIC SYSTEMS WILL CONTINUE TO INUNDATE THE
WESTERN U.S. INTO EARLY THIS WEEK AS A PLUME OF DEEP SUBTROPICAL
MOISTURE CONTINUES TO STREAM INTO THE REGION FROM THE TROPICS.
ADDITIONAL RAINFALL AMOUNTS OF 3 TO 5 INCHES...WITH LOCALIZED
AMOUNTS AS HIGH AS 6 INCHES OR MORE...CAN BE EXPECTED THROUGH
WEDNESDAY MORNING. TOTAL SNOWFALL AMOUNTS OF 2 TO 4 FEET WILL BE
POSSIBLE AT ELEVATIONS ABOVE 6000 FEET...WITH 4 TO 8 FEET OF
SNOWFALL POSSIBLE AT ELEVATIONS ABOVE 8000 FEET. RAIN AND SNOW
WILL CONTINUE ACROSS PORTIONS OF THE WEST THROUGH THE MIDDLE OF
THE WEEK...HOWEVER THE HEAVIEST PRECIPITATION FOR THE SIERRA
SHOULD BEGIN TO TAPER OFF BY EARLY TUESDAY MORNING.
THE NEXT STORM SUMMARY WILL BE ISSUED BY THE HYDROMETEOROLOGICAL
PREDICTION CENTER AT 700 AM PST. PLEASE REFER TO YOUR LOCAL
NATIONAL WEATHER SERVICE OFFICE FOR ADDITIONAL INFORMATION ON THIS
EVENT.
RYAN
Last Updated: 351 AM EST MON DEC 20 2010