THE WEATHER PREDICTION CENTER

COLLEGE PARK, MD


STORM SUMMARY MESSAGE



STORM SUMMARY NUMBER 02 FOR WESTERN U.S. WINTER STORM
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
100 PM PST SAT DEC 24 2016

...SNOW FALLING ACROSS MUCH OF THE WESTERN U.S. WITH RAIN INTO THE
DESERT SOUTHWEST...

WINTER STORM WATCHES WARNINGS AND WINTER WEATHER ADVISORIES ARE IN
EFFECT ACROSS MUCH OF THE WESTERN U.S. AND NORTHERN PLAINS

BLIZZARD WARNINGS ARE IN EFFECT ACROSS NORTH DAKOTA WESTERN SOUTH
DAKOTA AND NORTHWEST MINNESOTA.

WIND ADVISORIES AND HIGH WIND WATCHES ARE IN EFFECT ACROSS PARTS
OF SOUTHERN CALIFORNIA ARIZONA NEW MEXICO COLORADO AND WYOMING.

ICE STORM WARNINGS AND FREEZING RAIN ADVISORIES ARE IN EFFECT
ACROSS MINNESOTA NORTHERN IOWA AND WESTERN WISCONSIN.

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

AT 000 PM PST...A LOW PRESSURE CENTER WITH A CENTRAL PRESSURE OF
997 MB...29.42 INCHES...WAS LOCATED ABOUT 160 MILES NORTH OF LAS
VEGAS...NEVADA. A WARM FRONT EXTENDS FROM THE LOW ACROSS CENTRAL
UTAH THEN SOUTHEAST ACROSS NEW MEXICO. A COLD FRONT EXTENDS SOUTH
ACROSS WESTERN ARIZONA. NATIONAL WEATHER SERVICE RADAR AND SURFACE
OBSERVATION INDICATE LIGHT TO MODERATE SNOW FALLING ACROSS THE
GREAT BASIN NORTHWARD TOWARD THE NORTHERN ROCKIES. FURTHER
SOUTH...RAIN WAS FALLING ACROSS SOUTHERN NEVADA...UTAH...ARIZONA
AND SOUTHERN CALIFORNIA. BEHIND TO FRONT...RAIN AND SNOW SHOWERS
ARE EFFECTING CENTRAL AND NORTHERN CALIFORNIA NORTHWARD TO WESTERN
OREGON AND WASHINGTON.

...SELECTED STORM TOTAL SNOWFALL IN INCHES FROM 700 AM PST FRI DEC
23 THROUGH 1200 PM PST SAT DEC 24...

...CALIFORNIA...
GIANT FOREST 15 SE                   22.0                    
FLORENCE LAKE 7 WNW                  19.0                    
KINGVALE 1 WSW                       18.0                    
LAKE THOMAS EDISON 6 E               16.0                    
TUOLUMNE MEADOWS                     16.0                    
YOSEMITE VALLEY 8 SSE                14.0                    
DEVILS POSTPILE 10 WSW               13.0                    
HETCH HETCHY 10 NE                   12.0                    
JOHNSONDALE 17 NE                    11.0                    
SOUTH LAKE 1 SSE                     10.0                    
MOUNT SHASTA 3 SSE                    6.0                    
MAPLE CREEK 8 S                       4.0                    

...IDAHO...
HAILEY 21 ENE                        13.5                    
KETCHUM 16 WSW                       11.7                    
FAIRFIELD 10 NNW                     10.4                    
BELLEVUE 5 NW                        10.0                    
SPENCER 11 NE                         9.0                    
HAILEY 2 N                            8.5                    
NEZPERCE                              6.0                    
SANTA 4 SE                            6.0                    
SAINT MARIES                          5.0                    
BLANCHARD                             4.3                    
MOSCOW                                4.0                    

...NEVADA...
MT. CHARLESTON 5 NW                  11.0                    
PIOCHE 1 S                            6.0                    

...OREGON...
PRINEVILLE 8 E                        7.0                    
LA PINE 5 NNW                         6.0                    

...WASHINGTON...
VALLEY 2 SE                           8.0                    
LOON LAKE 3 NNE                       6.5                    
SPRINGDALE                            6.0                    
TUM TUM 7 SSE                         6.0                    
SPOKANE 6 NW                          4.5                    
NEWPORT                               4.0                    
PULLMAN                               4.0                    
SPOKANE 4 NNW                         4.0                    

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

...CALIFORNIA...
BIG BEAR CITY 13 ESE                  80                    
SAN FERNANDO 5 NNE                    69                    
LA QUINTA 13 SW                       68                    
ACTON 9 SE                            62                    
MOJAVE 2 ENE                          59                    
PALMDALE 5 S                          58                    
LANCASTER 14 WSW                      56                    
SANTA BARBARA 5 N                     54                    
CHATSWORTH 4 N                        51                    
GEORGE AFB 5 ENE                      51                    

...COLORADO...
 CORTEZ 4 SW                          51                    

...MONTANA...
 LIVINGSTON 2 WSW                     54                    


A DEEP UPPER LOW WILL SWING ACROSS THE WESTERN U.S. TODAY BRINGING
SNOWFALL TO MUCH OF THE REGION. AS THE UPPER LOW MOVES TOWARD THE
CENTRAL U.S. A SURFACE LOW WILL DEVELOP IN NORTHERN COLORADO ON
CHRISTMAS MORNING. THE LOW WILL RAPIDLY DEEPEN THROUGH THE DAY ON
CHRISTMAS DRAWING MOISTURE NORTHWARD ACROSS THE CENTRAL U.S. HEAVY
SNOW WILL OVERSPREAD THE NORTHERN PLAINS AND STRONG WINDS WILL
CREATE BLIZZARD CONDITIONS ACROSS THE DAKOTAS. SNOW WILL CONTINUE
ACROSS PORTIONS OF THE NORTHERN ROCKIES WHERE NORTHEASTERLY WINDS
WILL LEAD TO UPSLOPE SNOWFALL. AN AREA FROM CENTRAL MINNESOTA TO
EASTERN SOUTH DAKOTA TO NORTHERN IOWA AND WESTERN WISCONSIN WILL
SEE A PERIOD OF FREEZING RAIN. AS THE LOW MOVES ACROSS THE
NORTHERN PLAINS MUCH OF THE MIDWEST THAT SAW FREEZING RAIN WILL
CHANGE TO A PERIOD OF RAIN BEFORE ENDING AS SNOW ON TUESDAY. TOTAL
ACCUMULATIONS ACROSS THE WEST WILL VARY GREATLY WITH ELEVATION.
THE VALLEYS WILL SEE 2 TO 4 INCHES WHILE THE HIGHER ELEVATIONS
COULD SEE TO 10 TO 20 INCHES. 6 TO 12 INCHES IS EXPECTED FROM
WESTERN SOUTH DAKOTA ACROSS NORTH DAKOTA AND NORTHWEST MINNESOTA.
A BAND OF 12 TO 18 INCHES IS POSSIBLE FROM NORTHWEST SOUTH DAKOTA
TO NORTHWEST MINNESOTA. SIGNIFICANT ICE ACCUMULATIONS...OF UP TO
.25 INCHES ARE POSSIBLE FROM NORTHEAST SOUTH DAKOTA ACROSS CENTRAL
MINNESOTA AND NORTHERN WISCONSIN WITH LESSER AMOUNTS ACROSS
SOUTHERN MINNESOTA AND NORTHERN IOWA.

THE NEXT STORM SUMMARY WILL BE ISSUED BY THE WEATHER PREDICTION
CENTER AT 700 PM PST. PLEASE REFER TO YOUR LOCAL NATIONAL WEATHER
SERVICE OFFICE FOR ADDITIONAL INFORMATION ON THIS EVENT.

KREKELER




Last Updated: 346 PM EST SAT DEC 24 2016