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