STORM SUMMARY NUMBER 01 FOR NORTHERN AND CENTRAL CALIFORNIA HEAVY
RAINFALL AND MOUNTAIN SNOW
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
100 PM PST MON FEB 20 2017

...WIDESPREAD HEAVY RAIN AND FLOODING CURRENTLY IMPACTING NORTHERN
CALIFORNIA...

FLOOD WATCHES AND WARNINGS ARE IN EFFECT ACROSS PORTIONS OF
NORTHERN AND CENTRAL CALIFORNIA AND SOUTHWEST OREGON.

WINTER STORM WARNINGS AND WINTER WEATHER ADVISORIES ARE IN EFFECT
ACROSS PORTIONS OF THE SIERRAS AND HIGHER TERRAIN OF NORTHERN
CALIFORNIA.

HIGH WIND WARNINGS AND WIND ADVISORIES ARE IN EFFECT ACROSS MUCH
OF NORTHERN AND CENTRAL CALIFORNIA...THE GREAT BASIN...AND
PORTIONS OF OREGON.

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

AT 1200 PM PST...AN UPPER LEVEL TROUGH WAS LOCATED ACROSS THE
EASTERN PACIFIC OCEAN AS A STREAM OF MOISTURE AT THE BASE OF THE
TROUGH WAS DIRECTED INTO NORTHERN CALIFORNIA. NATIONAL WEATHER
SERVICE DOPPLER RADARS AND SURFACE OBSERVATIONS INDICATED
WIDESPREAD MODERATE TO HEAVY RAIN FALLING ACROSS PORTIONS OF
NORTHERN AND CENTRAL CALIFORNIA. ACROSS THE HIGHER ELEVATIONS OF
THE SIERRAS...MODERATE TO HEAVY SNOW WAS FALLING. LIGHT TO
MODERATE RAIN WAS ALSO FALLING ACROSS PORTIONS OF THE GREAT
BASIN...INTERMOUNTAIN WEST...AND PACIFIC NORTHWEST.

...SELECTED STORM TOTAL SNOWFALL IN INCHES FROM 1000 PM PST SUN
FEB 19 THROUGH 1200 PM PST MON FEB 20...

...CALIFORNIA...
MAMMOTH LAKES 2 W                    16.0                    
TUOLUMNE MEADOWS                     11.0                    
NORTHSTAR                             8.0                    
SQUAW VALLEY                          8.0                    

...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 SUN
FEB 19 THROUGH 1200 PM PST MON FEB 20...

...CALIFORNIA...
FT HUNTER LIGGETT RAWS                6.82                    
COOSKIE MTN RAWS NEAR PETROLIA        5.68                    
HONEYDEW 2 SSE                        5.40                    
MINING RIDGE                          5.32                    
BIG SUR RAWS                          5.16                    
VENADO 7 NNW GUERNEVILLE              5.00                    
YORKVILLE                             4.28                    
CAMP SIX RAWS NEAR GASQUET            4.00                    
BOULDER CREEK 1 SSE                   3.63                    
CLOVERDALE 5 NNW                      3.20                    
MIDDLE PEAK RAWS                      3.04                    
TAYLOR RIDGE                          3.04                    
TRINITY CENTER 1 ESE                  3.03                    
LAYTONVILLE RAWS                      2.90                    
MIRANDA 4 SW                          2.83                    
LEXINGTON HILLS 2 SSE                 2.57                    
ARCATA/EUREKA AIRPORT                 1.76                    
CRESCENT CITY 8 NNE                   1.68                    
SANTA ROSA/SONOMA COUNTY ARPT         1.50                    
MONTEREY AIRPORT                      1.33                    
DOWNTOWN SAN FRANCISCO                1.11                    

...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                    
FAIRHAVEN 1 WSW                       63                    
MENDOCINO PASS RAWS                   61                    
JACK MCNAMARA FIELD ARPT              60                    


EXPECT HEAVY RAINFALL AND MOUNTAIN SNOW TO CONTINUE ACROSS
CALIFORNIA THIS EVENING AND ON TUESDAY. 2 TO 4 INCHES OF
ADDITIONAL RAINFALL IS POSSIBLE ACROSS PORTIONS OF NORTHERN
CALIFORNIA. FLASH FLOODING WILL REMAIN A THREAT PARTICULARLY
ACROSS PORTIONS OF NORTHERN AND CENTRAL CALIFORNIA AND THE
FOOTHILLS OF THE SIERRAS. IN THE HIGHER TERRAIN OF NORTHERN
CALIFORNIA AND THE SIERRAS...1 TO 3 FEET OF SNOW WILL BE POSSIBLE.
IN ADDITION TO THE HEAVY RAIN AND SNOW THREAT...GUSTY AND DAMAGING
WINDS ARE LIKELY WITH GUSTS AS HIGH AS 60 TO 70 MPH
POSSIBLE...ESPECIALLY ACROSS WIND PRONE MOUNTAIN RANGES.

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.

SANTORELLI