THE WEATHER PREDICTION CENTER

COLLEGE PARK, MD


STORM SUMMARY MESSAGE



STORM SUMMARY NUMBER 04 FOR WESTERN AND CENTRAL U.S. WINTER STORM
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
700 PM PST THU DEC 15 2016

...MODERATE TO HEAVY RAIN IS OCCURRING IN CALIFORNIA WITH SNOW AND
RAIN SHOWERS FALLING ACROSS PORTIONS OF THE GREAT BASIN AND THE
ROCKIES...

WINTER STORM WARNINGS...WATCHES...AND WINTER WEATHER ADVISORIES
ARE IN EFFECT FOR THE SIERRA AND WASATCH MOUNTAINS...THE NORTHERN
AND CENTRAL ROCKIES...AND STRETCHING INTO PORTIONS OF THE PLAINS
AND THE UPPER MIDWEST.

FLOOD AND FLASH FLOOD WATCHES ARE IN EFFECT FOR PORTIONS OF
CALIFORNIA...AS WELL AS FAR SOUTHWEST OREGON AND UTAH.

HIGH WIND WATCHES AND WARNINGS ARE IN EFFECT FOR PARTS OF
CALIFORNIA...THE GREAT BASIN...FOUR CORNERS REGION...AND THE
SOUTHERN AND CENTRAL ROCKIES.

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

AT 600 PM PST...SEVERAL AREAS OF LOW PRESSURE WERE LOCATED ALONG
AN ARCTIC FRONTAL BOUNDARY STRETCHING ACROSS THE WESTERN U.S..
THIS FRONT EXTENDED FROM NORTHERN CALIFORNIA...ACROSS THE
INTERMOUNTAIN WEST AND THE NORTHERN ROCKIES...AND THROUGH THE
CENTRAL AND SOUTHERN HIGH PLAINS. NATIONAL WEATHER SERVICE DOPPLER
RADARS AND SURFACE OBSERVATIONS INDICATED THAT MODERATE TO HEAVY
RAIN WAS FALLING ACROSS MUCH OF COASTAL AND NORTHERN/CENTRAL
CALIFORNIA AS WELL AS INTO NORTHERN NEVADA AND SOUTHERN IDAHO.
ELSEWHERE ACROSS THE INTERMOUNTAIN WEST...THE SOUTHWEST...AND THE
ROCKIES...LIGHT TO MODERATE VALLEY RAIN AND MOUNTAIN SNOW WAS
OBSERVED. FARTHER EAST...SCATTERED SNOW SHOWERS HAD STARTED ACROSS
THE NORTHERN PLAINS AND PARTS OF THE UPPER MIDWEST.

...SELECTED STORM TOTAL SNOWFALL IN INCHES FROM 700 AM PST TUE DEC
13 THROUGH 600 PM PST THU DEC 15...

...COLORADO...
EMPIRE                                9.0                    
GEORGETOWN                            8.4                    
DILLON 1 E                            6.5                    
BRECKENRIDGE 1 SSE                    5.9                    

...IDAHO...
GRAND VIEW                            4.0                    
BOISE                                 2.0                    

...MONTANA...
ACTON 9 SW                           12.0                    
DARBY                                12.0                    
MELVILLE 5 W                         10.4                    
WOLF CREEK 3 ESE                      9.5                    
RYEGATE                               9.0                    
STEVENSVILLE 2 WNW                    8.0                    
BIG TIMBER 1 N                        7.0                    
GEORGETOWN 1 WSW                      7.0                    
MISSOULA 4 SSW                        7.0                    
PARK CITY                             7.0                    
WEST YELLOWSTONE 2 NW                 7.0                    
HAMILTON 2 N                          6.5                    
EAST HELENA 3 WNW                     6.0                    
GREAT FALLS 2 NW                      6.0                    
LOLO                                  6.0                    
SPRINGDALE                            6.0                    

...NEVADA...
KINGS RIVER VALLEY 16 N               9.0                    
CHARLESTON 14 W                       8.0                    
MCDERMITT                             7.0                    
CLOVER VALLEY 4 N                     6.0                    

...OREGON...
LA PINE 5 N                          21.0                    
BEND                                 17.0                    
TERREBONNE 9 NW                      14.0                    
SUNRIVER                             13.0                    
WARM SPRINGS 1 ESE                   10.0                    
LEXINGTON                             7.0                    
HERMISTON 2 N                         6.0                    
HOOD RIVER                            6.0                    
PILOT ROCK                            6.0                    
SALEM                                 5.0                    
WARREN                                3.5                    
PORTLAND SOUTHEAST                    3.3                    
PORTLAND DOWNTOWN                     1.5                    
TILAMOOK                              1.0                    

...WASHINGTON...
MAYVIEW 5 N                           7.0                    
CLARKSTON                             5.0                    
YAKIMA                                3.0                    

...WYOMING...
TOGWOTEE MOUNTAIN LODGE              11.0                    
SOUTH ENTRANCE 5 N                    9.0                    
ALTA 6 ENE                            8.0                    
BONDURANT 19 SW                       7.0                    

...SELECTED STORM TOTAL RAINFALL IN INCHES FROM 700 AM PST TUE DEC
13 THROUGH 600 PM PST THU DEC 15...

...CALIFORNIA...
VENADO 7 NNW GUERNEVILLE              6.44                    
STOUTS MEADOW                         6.12                    
SMITH RIVER 1.1 SSE                   5.48                    
MIDDLE PEAK RAWS                      5.41                    
PITT RIVER                            5.01                    
MAGALIA 1 ESE                         4.54                    
ANDERSON SPRINGS                      4.30                    
MONTE RIO 12 WNW                      4.25                    
PARADISE                              4.22                    
BIG BEN 3 NW                          4.20                    
BUTTE MEADOWS 2 WSW                   3.89                    
ANGWIN                                2.92                    
YOUNTVILLE 3 WSW                      2.72                    
HAWKEYE RAWS                          2.70                    
PETRIFIED FOREST                      2.64                    
GLEN ELLEN 5 NE                       2.44                    
MCKINLEYVILLE 7.3 ESE                 2.24                    
BARNABY RAWS                          2.22                    
SAINT HELENA 3 W                      2.16                    
BEN LOMOND MOUNTAIN                   1.99                    
SAN ANSELMO                           1.56                    
REDDING 7.9 NNE                       1.33                    

...OREGON...
OBRIEN 2 WSW                          7.40                    
BROOKINGS 5 NNW                       7.10                    
GLENDALE                              4.13                    
LANGLOIS 1 NNE                        3.63                    
TAKILMA 4 NNE                         3.27                    
MURPHY 1 SSE                          3.11                    
COOS BAY 7 ESE                        2.12                    
CENTRAL POINT 2 NNE                   1.65                    

...SELECTED STORM TOTAL FREEZING RAIN ICE AMOUNTS IN INCHES FROM
700 AM PST TUE DEC 13 THROUGH 600 PM PST THU DEC 15...

...OREGON...
SPRINGFIELD                           0.88                    
EUGENE                                0.40                    
SODAVILLE 1 SSW                       0.40                    
CORVALLIS 4 NNE                       0.20                    

...SELECTED PEAK WIND GUSTS IN MILES PER HOUR EARLIER IN THE
EVENT...

...CALIFORNIA...
MAMMOTH-YOSEMITE AIRPORT              71                    
JANESVILLE                            61                    
LAKE CITY 3 ESE                       61                    
BRIDGEPORT 4 WNW                      60                    

...COLORADO...
WESTON 4 S                            83                    
GLEN HAVEN 1 NW                       80                    
AIR FORCE ACADEMY 3 WSW               74                    

...NEVADA...
MOUNT ROSE SKI AREA                   97                    
MOGUL 3 N                             93                    
PLEASANT VALLEY 1 WNW                 91                    
E GALENA                              79                    


THIS EXPANSIVE STORM SYSTEM WILL CONTINUE TO AFFECT THE WESTERN
U.S. THROUGH FRIDAY NIGHT. AN ADDITIONAL 18 TO 30 INCHES OF
SNOW...WITH LOCALLY HIGHER AMOUNTS...IS EXPECTED IN THE HIGHER
ELEVATIONS OF THE CALIFORNIA SIERRAS...THE WASATCH RANGE IN
UTAH...AND MUCH OF THE NORTHERN AND CENTRAL ROCKIES. VERY HEAVY
RAIN WILL CONTINUE OVERNIGHT AND INTO FRIDAY FOR PORTIONS OF
CALIFORNIA...WITH 4 TO 6 INCHES ALONG THE CENTRAL AND SOUTHERN
COASTS WITH LOCALIZED TOTALS OF UP TO 8 INCHES IN THE SIERRA
FOOTHILLS. FLOODING AND FLASH FLOODING WILL CONTINUE TO BE A
THREAT ACROSS THESE REGIONS OF CALIFORNIA. LOW PRESSURE WILL TRACK
TOWARD THE CENTRAL ROCKIES BY FRIDAY...AND THEN IS EXPECTED TO
REFORM OVER THE PLAINS...WITH HEAVY SNOW SPREADING INTO THE
NORTHERN PLAINS AND UPPER MIDWEST FRIDAY AND SATURDAY.

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

SANTORELLI




Last Updated: 1004 PM EST THU DEC 15 2016