THE HYDROMETEOROLOGICAL PREDICTION CENTER
CAMP SPRINGS, MD
STORM SUMMARY MESSAGE
STORM SUMMARY NUMBER 4 FOR WESTERN U.S. HEAVY PRECIPITATION EVENT
NWS HYDROMETEOROLOGICAL PREDICTION CENTER CAMP SPRINGS MD
100 PM PST SUN DEC 19 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 SOUTHERN OREGON...THE MOUNTAINOUS AREAS OF CENTRAL AND
NORTHERN CALIFORNIA...AND PARTS OF NORTHWEST NEVADA.
FLOOD AND FLASH FLOOD WATCHES...WARNINGS...AND ADVISORIES HAVE
BEEN ISSUED FOR MANY OF THE LOWER ELEVATIONS OF CENTRAL AND INTO
SOUTHERN CALIFORNIA...AS WELL AS PORTIONS OF WESTERN 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 DOPPLER RADARS AND
SURFACE OBSERVATIONS INDICATED A WIDESPREAD AREA OF MODERATE TO
LOCALLY HEAVY RAIN OVER MUCH OF CENTRAL AND NORTHERN
CALIFORNIA...AND EXTENDING INTO SOUTHWESTERN OREGON AND NORTHERN
NEVADA. WIDESPREAD HEAVY SNOW WAS REPORTED IN THE HIGHER
ELEVATIONS OF THE SIERRA NEVADA AND OTHER NEARBY MOUNTAIN
RANGES...WITH BLIZZARD CONDITIONS ALONG MOUNTAIN CRESTS. LIGHTER
PRECIPITATION WAS OBSERVED INTO CENTRAL PARTS OF THE
INTER-MOUNTAIN WEST.
...SELECTED STORM TOTAL SNOWFALL IN INCHES FROM 700 PM PST FRI DEC
17 THROUGH 100 PM PST SUN DEC 19...
...CALIFORNIA...
MAMMOTH LAKES 3 WSW 108.0
ALPINE MEADOWS 53.0
KIRKWOOD SKI AREA 52.0
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...
LEADVILLE 2 NE 4.7
...IDAHO...
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 RIVEER SUMMIT 8.0
TUMALO 9 NW 7.0
WILLAMEETTE PASS 7.0
...UTAH...
PROVO CANYON 24.0
BRIGHTON CREST 14.0
SNOWBASIN MID BOWL 14.0
...WASHINGTON...
CARSON 7.0
...WYOMING...
BATTLE LAKE 2 E 16.5
NORTH FRENCH CREEK 15.0
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 100 PM PST SUN DEC 19...
...ARIZONA...
BLACK ROCK 1.33
...CALIFORNIA...
BEARTRAP MEADOW 10.18
NATURE POINT 9.72
WOFFORD HEIGHTS 6.66
BLUE CANYON 6.48
JERSEYDALE 6.01
SAN LUIS OBISPO CO ARPT 5.82
OXNARD AIRPORT 4.28
SANTA BARBARA MUNI ARPT 3.64
CAMARILLO AIRPORT 3.47
SANTA MONICA MUNI ARPT 3.46
LOS GATOS 6.1 S 3.41
SANTA MARIA PUBLIC APT 3.37
VANDENBERG AFB/LOMPOC 3.20
VISALIA MUNI ARPT 2.93
LOS ANGELES INTL ARPT 2.87
OAK CREEK 2.49
HAWTHORNE MUNI ARPT 2.48
LINDSAY 0.5 N 2.34
LONG BEACH AIRPORT 2.27
VAN NUYS AIRPORT 2.21
OAKLAND 2.20
SAN FRANCISCO 1.98
...OREGON...
SEXTON SUMMIT 2.18
...SELECTED PEAK WIND GUSTS IN MILES PER HOUR EARLIER IN THE
EVENT...
...CALIFORNIA...
LAKE TAHOE AIRPORT 48
BLUE CANYON 44
MATHER AFB/SACRAMENTO 44
SANBERG 44
RED BLUFF MUNI ARPT 43
SAN FRANCISCO INTL ARPT 41
...IDAHO...
CALDWELL 41
...NEVADA...
VIRGINIA PEAK 94
FALLON 41
...UTAH...
OGDEN PEAK 77
RED SPUR 57
OTTER PEAK 55
...WYOMING...
RAWLINS MUNI ARPT 40
A SERIES OF MOIST PACIFIC SYSTEMS WILL CONTINUE TO INUNDATE THE
WESTERN U.S. FOR THE REST OF THE WEEKEND AND INTO EARLY THIS WEEK
AS A PLUME OF DEEP SUBTROPICAL MOISTURE CONTINUES TO STREAM INTO
THE REGION FROM THE TROPICS. ADDITIONAL RAINFALL AMOUNTS OF 2 TO
4 INCHES...WITH LOCALIZED TOTAL STORM AMOUNTS AS HIGH AS 8
INCHES...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. THE HEAVIEST OF THE PRECIPITATION
SHOULD BEGIN TO TAPER OFF BY MONDAY NIGHT.
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.
HAMRICK
Last Updated: 352 PM EST SUN DEC 19 2010