STORM SUMMARY NUMBER 3 FOR NORTHERN AND CENTRAL CALIFORNIA HEAVY
RAINFALL AND MOUNTAIN SNOW
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
100 AM PST TUE FEB 21 2017

...RAIN OVER CALIFORNIA BECOMING LESS HEAVY AS STORM BEGINS TO
WEAKEN NEAR THE OREGON COAST...

FLOOD WARNINGS AND FLOOD ADVISORIES REMAIN IN EFFECT ACROSS THE
INTERIOR PORTION OF NORTHERN CALIFORNIA...PARTS OF NORTHERN NEVADA
INTO SOUTHERN IDAHO.

FLOOD WATCHES HAVE BEEN ISSUED FOR PARTS OF EASTERN
WASHINGTON...NORTHERN IDAHO AND FAR NORTHERN HIGH PLAINS.

WINTER STORM WARNINGS AND WINTER WEATHER ADVISORIES ARE IN EFFECT
ALONG THE SIERRA NEVADA AND HIGHER ELEVATIONS OF NORTHERN
CALIFORNIA...SOUTHERN OREGON...AS WELL AS PORTIONS OF THE NORTHERN
ROCKIES.

HIGH WIND WARNINGS AND WIND ADVISORIES ARE IN EFFECT ALL OF
NORTHERN AND CENTRAL CALIFORNIA...INTO THE GREAT BASIN...AND THE
SOUTHERN HALF OF OREGON...AS WELL AS PARTS OF CENTRAL AND EASTERN
WYOMING.

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

AT 1200 AM PST...A LOW PRESSURE SYSTEM WITH AN ESTIMATED CENTRAL
PRESSURE OF 1000 MB...29.53 INCHES...WAS APPROACHING THE OREGON
COAST.  THE ASSOCIATED STRONG JET STREAMS ALOFT CONTINUED TO FETCH
HIGH AMOUNTS OF MOISTURE FROM THE EASTERN PACIFIC INTO NORTHERN
AND CENTRAL CALIFORNIA.  NATIONAL WEATHER SERVICE DOPPLER RADARS
AND SURFACE OBSERVATIONS INDICATED THAT THE MODERATE TO HEAVY RAIN
ACROSS PORTIONS OF NORTHERN AND CENTRAL CALIFORNIA HAD BECOME LESS
INTENSITY DURING THE PAST FEW HOURS AS THE STORM CENTER APPROACHES
LAND AND WEAKENS.  FARTHER INLAND...PRECIPITATION WAS IN THE FORM
OF MODERATE TO HEAVY SNOW OVER THE HIGHER ELEVATIONS OF THE SIERRA
NEVADA.  MEANWHILE...LIGHT TO MODERATE RAIN AND HIGH-ELEVATION
SNOW CONTINUED TO SPREAD EASTWARD INTO PORTIONS OF THE GREAT
BASIN...INTERMOUNTAIN WEST...AND PACIFIC NORTHWEST.

...SELECTED STORM TOTAL SNOWFALL IN INCHES FROM 1000 PM PST SAT
FEB 18 THROUGH 1200 AM PST TUE FEB 21...

...CALIFORNIA...
MOUNT ROSE SKI AREA NNE              31.0                    
MAMMOTH LAKES 2 W                    16.0                    
TUOLUMNE MEADOWS                     11.0                    
NORTHSTAR                             8.0                    
SQUAW VALLEY                          8.0                    
SUSANVILLE 5 WNW                      5.5                    

...NEVADA...
MOUNT ROSE SKI AREA                  16.0                    
INCLINE VILLAGE 1 E                  12.0                    
HEAVENLY VALLEY                       9.0                    

...SELECTED STORM TOTAL RAINFALL IN INCHES FROM 1000 PM PST SAT
FEB 18 THROUGH 1200 AM PST TUE FEB 21...

...CALIFORNIA...
PESCADERO                            11.15                    
MINING RIDGE                          8.68                    
VENADO                                8.20                    
ANDERSON PEAK                         7.44                    
BIG SUR RAWS                          6.98                    
FT HUNTER LIGGETT RAWS                6.82                    
CENTRAL                               6.58                    
COOSKIE MTN RAWS NEAR PETROLIA        5.68                    
BEN LOMOND RAWS                       5.61                    
HONEYDEW 2 SSE                        5.40                    
VENADO 7 NNW GUERNEVILLE              5.00                    
YORKVILLE                             4.28                    
CAMP SIX RAWS NEAR GASQUET            4.00                    
KENTFIELD                             3.98                    
BLUE CANYON                           3.93                    
BOULDER CREEK 1 SSE                   3.63                    
HONEYDEW                              3.60                    
CLOVERDALE 5 NNW                      3.20                    
SPRING VALLEY                         3.16                    
MIDDLE PEAK RAWS                      3.04                    
TAYLOR RIDGE                          3.04                    
TRINITY CENTER 1 ESE                  3.03                    
LAYTONVILLE RAWS                      2.90                    
MIRANDA 4 SW                          2.83                    
SAN RAFAEL                            2.74                    
VACAVILLE                             2.71                    
WATSONVILLE MUNI ARPT                 2.61                    
LEXINGTON HILLS 2 SSE                 2.57                    
SANTA ROSA/SONOMA CO. ARPT            2.47                    
RICHMOND                              1.98                    
SAN FRANCISCO                         1.96                    
ARCATA/EUREKA AIRPORT                 1.76                    
CRESCENT CITY 8 NNE                   1.68                    
SANTA ROSA/SONOMA COUNTY ARPT         1.50                    
MONTEREY AIRPORT                      1.33                    

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

...CALIFORNIA...
SLATE CREEK RAWS                      79                    
CAMP SIX RAWS NEAR GASQUET            70                    
COOSKIE MTN RAWS NEAR PETROLIA        68                    
KNEELAND 3 ESE                        68                    
PANOCHE ROAD WEST OF I-5              64                    
FAIRHAVEN 1 WSW                       63                    
MENDOCINO PASS RAWS                   61                    
JACK MCNAMARA FIELD ARPT              60                    


THE LOW PRESSURE SYSTEM IS FORECAST TO WEAKEN AS IT MAKES LANDFALL
THIS MORNING OVER THE OREGON COAST. MODERATE TO HEAVY
PRECIPITATION EARLY THIS MORNING OVER WESTERN OREGON SHOULD BEGIN
TO GRADUALLY TAPER OFF AS THE DAY PROGRESSES.  UP TO 3 INCHES OF
ADDITIONAL RAIN IS POSSIBLE OVER SOUTHWEST OREGON AND NORTHERN
CALIFORNIA COASTAL AREAS TODAY BEFORE THE RAIN TAPERS OFF TONIGHT.
 FLASH FLOODING WILL REMAIN A THREAT OVER CENTRAL CALIFORNIA TODAY
DUE TO ANTECENDENT HEAVY RAINS.  OVER THE HIGHER TERRAIN ALONG THE
SIERRAS IN CALIFORNIA AND THE CASCADES IN OREGON...AN ADDITIONAL
12 TO 18 INCHES OF SNOW WILL BE POSSIBLE.  IN ADDITION TO THE
HEAVY RAIN AND SNOW THREAT...DAMAGING WINDS GUSTING TO 60 TO 70
MPH ARE POSSIBLE...ESPECIALLY ALONG THE COAST AND OVER HIGHER
TERRAINS.

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

KONG