THE HYDROMETEOROLOGICAL PREDICTION CENTER
CAMP SPRINGS, MD
STORM SUMMARY MESSAGE
STORM SUMMARY NUMBER 3 FOR WESTERN U.S. HEAVY PRECIPITATION EVENT
NWS HYDROMETEOROLOGICAL PREDICTION CENTER CAMP SPRINGS MD
700 AM PST SUN DEC 19 2010
...MAJOR HEAVY RAIN AND MOUNTAIN SNOW EVENT NOW UNDERWAY FOR THE
WESTERN U.S. AS A SERIES OF MOISTURE-LADEN PACIFIC STORMS MOVE
ASHORE...
FLOOD AND FLASH FLOOD WATCHES...WARNINGS...AND ADVISORIES HAVE
BEEN ISSUED ACROSS CENTRAL AND NORTHERN CALIFORNIA AS WELL AS
PORTIONS OF WESTERN NEVADA AND SOUTHERN UTAH.
WINTER STORM WARNINGS AND WINTER WEATHER ADVISORIES ARE IN EFFECT
FOR MUCH OF OREGON...CENTRAL AND NORTHERN CALIFORNIA...NORTHERN
NEVADA...AND THE HIGHER ELEVATIONS OF THE NORTHERN AND CENTRAL
ROCKIES.
FOR A DETAILED GRAPHICAL DEPICTION OF THE LATEST
WATCHES...WARNINGS AND ADVISORIES...PLEASE SEE WWW.WEATHER.GOV
AT 600 AM PST...NATIONAL WEATHER SERVICE DOPPLER RADARS AND
SURFACE OBSERVATIONS INDICATED A WIDESPREAD AREA OF MODERATE TO
HEAVY RAIN OVER CENTRAL CALIFORNIA...WITH SNOW BEING REPORTED IN
THE HIGHER ELEVATIONS OF THE SIERRA NEVADA RANGES.
ALSO...SCATTERED AREAS OF LIGHT TO MODERATE PRECIPITATION WERE
SPREADING EASTWARD ACROSS PORTIONS OF THE GREAT BASIN AND CENTRAL
ROCKIES.
...SELECTED STORM TOTAL SNOWFALL IN INCHES FROM 700 PM PST FRI DEC
17 THROUGH 700 AM PST SUN DEC 19...
...CALIFORNIA...
MAMMOTH LAKES 2 W 37.0
BLACKCAP BASIN 33.0
ALPINE MEADOWS 30.0
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
TRUCKEE 12.0
...COLORADO...
LEADVILLE 2 NE 4.7
...IDAHO...
HAILEY 7.0
...NEVADA...
MOUNT ROSE SKI AREA 27.0
HEAVENLY VALLEY 20.0
INCLINE VILLAGE 5 ENE 19.0
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
...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 700 AM PST SUN DEC 19...
...A PORTION OR ALL OF THE PRECIPITATION AT SOME OF THESE SITES
MAY HAVE FALLEN AS SNOW...HOWEVER SNOWFALL MEASUREMENTS WERE NOT
AVAILABLE...
...CALIFORNIA...
BEARTRAP MEADOW 10.18
NATURE POINT 9.72
WOFFORD HEIGHTS 6.66
JERSEYDALE 6.01
BLUE CANYON 5.43
OXNARD AIRPORT 4.04
SAN LUIS OBISPO CO ARPT 3.91
SANTA BARBARA MUNI ARPT 3.64
LOS GATOS 6.1 S 3.41
SANTA MARIA PUBLIC APT 3.37
CAMARILLO AIRPORT 3.08
SANTA MONICA MUNI ARPT 2.92
LOS ANGELES INTL ARPT 2.78
VANDENBERG AFB/LOMPOC 2.63
OAK CREEK 2.49
HAWTHORNE MUNI ARPT 2.48
VISALIA MUNI ARPT 2.48
LINDSAY 0.5 N 2.34
VAN NUYS AIRPORT 2.09
LONG BEACH AIRPORT 2.00
...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...
FALLON 41
...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 EARLY INTO THIS WEEK
AS A PLUME OF DEEP SUBTROPICAL MOISTURE CONTINUES TO STREAM INTO
THE REGION. ADDITIONAL RAINFALL AMOUNTS OF THREE TO SIX
INCHES...WITH LOCALIZED AMOUNTS AS HIGH AS NINE INCHES...CAN BE
EXPECTED THROUGH WEDNESDAY MORNING. TOTAL SNOWFALL AMOUNTS OF 2 TO
4 FEET WILL BE POSSIBLE AT ELEVATIONS ABOVE 5000 FEET...WITH 6 TO
8 FEET OF SNOWFALL POSSIBLE AT ELEVATIONS ABOVE 7000 FEET. THE
HEAVIEST OF THE PRECIPITATION SHOULD BEGIN TO TAPER OFF BY LATE ON
MONDAY.
THE NEXT STORM SUMMARY WILL BE ISSUED BY THE HYDROMETEOROLOGICAL
PREDICTION CENTER AT 100 PM PST. PLEASE REFER TO YOUR LOCAL
NATIONAL WEATHER SERVICE OFFICE FOR ADDITIONAL INFORMATION ON THIS
EVENT.
GERHARDT
5
Last Updated: 949 AM EST SUN DEC 19 2010