THE HYDROMETEOROLOGICAL PREDICTION CENTER

CAMP SPRINGS, MD


STORM SUMMARY MESSAGE



STORM SUMMARY NUMBER 1 FOR WESTERN U.S. WINTER STORM
NWS HYDROMETEOROLOGICAL PREDICTION CENTER CAMP SPRINGS MD
700 PM PST FRI JAN 4 2008

...HEAVY RAIN...HIGH WINDS...AND HEAVY SNOW BATTER PORTIONS OF THE
WESTERN UNITED STATES...

BLIZZARD WARNINGS AND WINTER STORM WARNINGS ARE IN EFFECT FOR
MOUNTAINOUS PORTIONS OF THE WESTERN U.S. EASTWARD TO THE ROCKY
MOUNTAIN STATES.  GALE AND STORM WARNINGS ARE WIDESPREAD OFF THE
ENTIRE WEST COAST. FLASH FLOOD WATCHES AND WARNINGS ARE IN EFFECT
FOR PORTIONS OF SOUTHERN CALIFORNIA.

FOR A DETAILED GRAPHICAL DEPICTION OF THE LATEST WATCHES AND
WARNINGS...PLEASE SEE WWW.WEATHER.GOV.

A STRONG COLD FRONT ASSOCIATED WITH AN INTENSE STORM OFF THE WEST
COAST HAS PUSHED EASTWARD ACROSS THE WEST COAST AND IS SLOWLY
WORKING ITS WAY SOUTH ACROSS CENTRAL CALIFORNIA.  HEAVY RAIN...AND
BLIZZARD CONDITIONS IN THE SIERRA...ARE ASSOCIATED WITH THE
PASSAGE OF THE FRONT.  HEAVY RAIN HAS PUSHED SOUTH AND EAST OF SAN
FRANCISCO AND MODERATE TO HEAVY RAINS ARE MOVING INTO THE LOS
ANGELES METROPOLITAN AREA.  

HIGH WINDS HAVE BEEN RESPONSIBLE FOR DOWNED TREES...POWER OUTAGES
AND OVERTURNED TRUCKS IN SEVERAL WESTERN STATES...WITH HIGHEST
WINDS REPORTED AHEAD OF AND NEAR THE COLD FRONT FROM CENTRAL
CALIFORNIA THROUGH NEVADA...IDAHO...WESTERN MONTANA AND UTAH. 
STRONGEST WINDS HAVE BEEN REPORTED AT THE HIGHEST ELEVATIONS AND
ARE PRODUCING SEVERE BLIZZARD CONDITIONS ACROSS THE SIERRA...WHERE
SOME ROADS HAVE ALREADY BEEN CLOSED.

AT 0620 PM PST...NATIONAL WEATHER SERVICE DOPPLER RADARS AND
CURRENT SURFACE OBSERVATIONS INDICATE A LARGE AREA OF MODERATE TO
HEAVY RAIN AND HIGHER ELEVATION SNOW AS FAR SOUTH AS LOS ANGELES. 
AS THE COLD FRONT PASSED EASTWARD ACROSS CENTRAL CALIFORNIA AND
WESTERN NEVADA....SNOW LEVELS HAVE LOWERED WITH RAIN CHANGING TO
SNOW ACROSS THE LOWER SLOPES OF THE SIERRA.  BROKEN AREAS OF
SHOWERS AND MOUNTAIN SNOW ARE LOCATED FROM NORTHERN CALIFORNIA
THROUGH WESTERN OREGON AND WASHINGTON...AS WELL AS PORTIONS OF
IDAHO...WESTERN MONTANA AND THE WASATCH RANGE IN UTAH.

...SELECTED STORM TOTAL SNOW ACCUMULATIONS IN INCHES FROM 0100 AM
PST JAN 4 THROUGH 0600 PM PST FRI JAN 4...

...CALIFORNIA...
ASPENDELL			   16.0 4 HOURS
MT SHASTA 1 N                      12.0    
WEED 4 SSW                          9.0
MAMMOTH LAKES			    6.0     
MCCLOUD 3 S                         5.0     

...NEVADA...
DAGGET PASS			   10.0
COLD SPRINGS VALLEY		    6.0

...OREGON...
HYATT LAKE                          3.5     

...WASHINGTON...
TWISP 3 S			   11.0
CHELAN 9SW			   10.6
WINTHROP 1W			   10.5
OKANOGAN 8NW			    8.0
LEAVENWORTH                         6.0 

...IDAHO...
MCCALL 7 NW			    8.0
MCCALL				    6.0

...SELECTED STORM RAINFALL TOTALS IN INCHES FROM 0100 AM PST JAN 4
THROUGH 0600 PM PST FRI JAN 4...

...CALIFORNIA...
LOMA PRIETA 2200 FT		   10.00
BRANDY CREEK                        8.92  
VENADO                              8.00
BEN LOMOND			    7.99
BRANDY CREEK			    7.48  
OAK BOTTOM RAWS                     7.08
N SCOTTS VALLEY			    7.00   
HONEYDEW                            6.88
VENADO				    6.76  
CLEAR CREEK                         6.48  
LAKESHORE                           6.00  
HAWKEYE                             5.73  
MOUNT VEEDER                        5.58  
SOUTH FORK MOUNTAIN                 5.56
SAN MARCOS PASS			    5.45
WHISPERING PINES		    5.40 
YORKVILLE			    5.20  
STIRLING CITY                       4.96  
SHASTA DAM			    4.95
SANTA MARGARITA			    4.64
KONOCTI				    4.31 
MOUNT SHASTA                        3.77
SANTA ROSA/SONOMA CO ARPT           3.42
BLUE CANYON			    2.51
BISHOP				    2.38
SAN FRANCISCO ARPT		    2.34
SACRAMENTO			    1.98
MONTERY				    1.97 
UKIAH                               1.78  

...OREGON...
RIDDLE 2 SE			    2.69
WILLIAMS 1 N                        2.34  
BANDON 11.4 S                       2.27  
COOS BAY 2.5 W                      2.06  
SELMA 5 NNE                         2.14 

...NEVADA...
RENO 10SW			    3.25
N JOHNSON LANE			    3.00 EST
COLD SPRINGS			    2.11
RENO 5SW			    2.00 EST
RENO ARPT			    1.77
SPARKS				    1.40
GARDNERVILLE 2 SSW		    1.22
CARSON CITY 3NW			    1.20   

...SELECTED RECENT PEAK WIND GUSTS IN MILES PER HOUR...

...CALIFORNIA...
KREGOR PEAK                          107
ETTERSBURG 4W			     100 EST
NEVADA CITY			      92
PETROLIA 4S			      90      
LUCAS VALLEY 1 N                      83      
REDDING                               82       
ANGEL ISLAND                          78      
LAKEHEAD 3WNW                         78
CRANE FLAT			      75
MORRO BAY			      75       
LAKEPORT 10 NW                        73
BLUE CANYON			      72       
ELK GROVE 4 WNW                       71
LEE VINING 4 NNW		      71       
SAN FRANCISCO - GOLDEN GATE BRIDGE    70
REDDING			  	      70
SACRAMENTO			      69      
SAN FRANCISCO - SFO                   68
RED BLUFF			      67  
ATASCADERO                            62
SOUTH LAKE TAHOE		      59  

...WASHINGTON...
WALLA WALLA                           78  
CEDAR FALLS 4 NNE		      59
CLALLAM BAY 7 WNW		      52

...OREGON...
RIDDLE MOUNTAIN 6352 FT		      96
NEWPORT YAQUINA US 101 BRIDGE	      93
ENTERPRISE 3 SE			      83
CAPE FOULWEATHER		      82
YACHATS				      80
TOLLGATE 9W			      80
SEA LION CAVES			      78
MT HEBO				      72
JOHN DAY ARPT			      71
HEPPNER 15W			      70
FOX 5 SSE			      68
MITCHELL			      66
BROOKINGS 1 SE			      64

...IDAHO...
BOGUS BASIN SUMMIT		      75
CANYON CREEK 8500 FT		      73
TWIN FALLS 			      69
CHUBBUCK			      66
MERIDIAN 2NW			      57
N KEATING			      50 EST

...NEVADA...
GARDNERVILLE 5 WSW 4850 FT	      87
SPARKS 1 NE			      66
WASHOE 1 S			      65
SOUTHWEST RENO			      64
RENO				      62

...MONTANA...
EAST GLACIER PARK 8 SE		      67
NORRIS 6 N			      65
ENNIS ARPT			      63

...UTAH...
SNOWBIRD 2 SE			     101
OGDEN 5 E			      85
PARK CITY 4SW			      84
DUGWAY 16 NW			      83
SUNDANCE 1W			      68
TOOELE				      65

MODERATE TO HEAVY RAIN WILL CONTINUE OVERNIGHT ACROSS MUCH OF
CENTRAL AND SOUTHERN CALIFORNIA.  BLIZZARD CONDITIONS AND HEAVY
SNOW WILL ALSO CONTINUE OVERNIGHT ACROSS THE SIERRA WHERE SEVERAL
FEET OF SNOW ARE LIKELY ALONG THE HIGHEST ELEVATIONS WHILE SNOW
WILL SPREAD EASTWARD ACROSS CENTRAL AND NORTHERN NEVADA. THE COLD
FRONT WILL CONTINUE TO MOVE ACROSS THE INTERMOUNTAIN WEST
OVERNIGHT...INCREASING THE LIKELIHOOD OF SNOW DEVELOPING FROM 
NORTHERN ARIZONA...UTAH...WESTERN COLORADO AND WYOMING INTO
SATURDAY.

MORE RAIN AND MOUNTAIN SNOW ARE LIKELY THROUGH THE WEEKEND AS
STRONG FLOW OFF THE PACIFIC OCEAN AND A SERIES OF UPPER-LEVEL
DISTURBANCES CONTINUE TO PLAGUE THE REGION.

THE NEXT STORM SUMMARY WILL BE ISSUED BY THE HYDROMETEOROLOGICAL
PREDICTION CENTER AT 100 AM PST SATURDAY JANUARY 5. PLEASE REFER
TO YOUR LOCAL NATIONAL WEATHER SERVICE OFFICE FOR ADDITIONAL
INFORMATION ON THIS EVENT. 

KOCIN




Last Updated: 1005 PM EST FRI JAN 04 2008