THE HYDROMETEOROLOGICAL PREDICTION CENTER
COLLEGE PARK, MD
STORM SUMMARY MESSAGE
STORM SUMMARY NUMBER 04 FOR WESTERN U.S. HEAVY RAIN AND SNOW
NWS HYDROMETEOROLOGICAL PREDICTION CENTER COLLEGE PARK MD
700 AM PST FRI NOV 30 2012
...MULTI-DAY RAIN...WIND...AND SNOW EVENT CONTINUES TO IMPACT THE
NORTHWEST...
FLOOD AND FLASH FLOOD WATCHES AND WARNINGS ARE IN EFFECT FOR
PORTIONS OF COASTAL OREGON AS WELL AS CALIFORNIA.
COASTAL FLOOD WATCHES AND ADVISORIES ARE IN EFFECT FOR PORTIONS OF
COASTAL WASHINGTON AS WELL AS THE PUGET SOUND.
HIGH WIND WATCHES...WARNINGS...AND WIND ADVISORIES ARE IN EFFECT
FOR PORTIONS OF OREGON...CALIFORNIA...NEVADA AND MONTANA.
WINTER STORM WATCHES AND WARNINGS ARE IN EFFECT FOR THE SIERRA IN
CALIFORNIA AS WELL AS HIGHER ELEVATIONS OF IDAHO...MONTANA...AND
WYOMING.
FOR A DETAILED GRAPHICAL DEPICTION OF THE LATEST
WATCHES...WARNINGS AND ADVISORIES...PLEASE SEE WWW.WEATHER.GOV
AT 600 AM PST...AN EXPANSIVE AREA OF LOW PRESSURE WITH A CENTRAL
PRESSURE OF 970 MB...28.64 INCHES...CENTERED OVER THE NORTHEAST
PACIFIC CONTINUES TO FEED MOISTURE INTO THE WESTERN U.S. NATIONAL
WEATHER SERVICE DOPPLER RADARS AND SURFACE OBSERVATIONS INDICATED
SCATTERED TO WIDESPREAD RAIN ACROSS CENTRAL AND NORTHERN
CALIFORNIA...NORTHWARD INTO OREGON AND WASHINGTON. MOST OF THE
RAIN REPORTED WAS LIGHT TO MODERATE...WITH OCCASIONAL AREAS OF
HEAVY RAIN. THE MAJORITY OF THE PRECIPITATION IS FALLING IN THE
FORM OF RAIN. HOWEVER...IN THE HIGHER ELEVATIONS OF THE CASCADES
AND SIERRA NEVADA...THE PRECIPITATION WAS FALLING AS SNOW.
...SELECTED STORM TOTAL RAINFALL IN INCHES FROM 400 PM PST TUE NOV
27 THROUGH 400 AM PST FRI NOV 30...
...CALIFORNIA...
ST. HELENA 5 ESE 8.82
PINECREST 6.86
ORICK 5.9 SSW 5.92
CRESCENT CITY/MC NAMARA FIELD 5.09
PETROLIA 7.4 SE 4.57
MOUNT SHASTA 4.44
SANTA ROSA 1.3 NW 4.30
UKIAH MUNI ARPT 4.25
LOS GATOS 6.1 S 4.10
SANTA ROSA/SONOMA CO. ARPT 4.06
BLUE CANYON 3.69
FORTUNA 1.3 S 3.52
HONDEYDEW 1 SW 2.72
WEED 3 SSW 2.62
BRIDGEVILLE 5.2 ENE 2.55
SIMS 1 SSW 2.46
...OREGON...
OBRIEN 2 SSW 5.31
MERLIN 6 SW 4.50
GRANTS PASS 4 N 3.30
CAVE JUNCTION 2 N 3.14
SELMA 3 ESE 2.90
MURPHY 1 SSE 2.62
MEDFORD-JACKSON CO. ARPT 2.48
SEXTON SUMMIT 2.34
EUGENE 2.2 SW 2.20
GRANTS PASS 10 W 1.97
ROSEBURG MUNI ARPT 1.97
BROOKINGS 4.2 ENE 1.93
GOLD BEACH 4.8 NE 1.93
APPLEGATE 3 NE 1.74
EAGLE POINT 0.1 S 1.62
AGNESS 6.4 NE 1.57
...WASHINGTON...
QUILLAYUTE 1.42
...SELECTED STORM TOTAL SNOWFALL IN INCHES FROM 400 PM PST TUE NOV
27 THROUGH 400 AM PST FRI NOV 30...
...CALIFORNIA...
CHARLOTTE LAKE 8.0
CHAGOOPA PLATEAU 7.0
KAISER POINT 7.0
VOLCANIC KNOB 6.0
FAREWELL GAP 5.0
SODA SPRINGS 1.5 SSW 4.0
...OREGON...
ASHLAND 8 S 10.0
...SELECTED PEAK WIND GUSTS IN MILES PER HOUR EARLIER IN THE
EVENT...
...CALIFORNIA...
INDEPENDENCE 5 NW 79
SANDBERG 75
REDDING 2 S 71
HIGH GLADE LOOKOUT 67
MT. DIABLO RAWS 67
BLUE CANYON 66
DUNCAN PEAK RAWS 64
SADDLEBACK RAWS 63
REDDING 61
CRESCENT MILLS 3 SW 60
JANESVILLE 60
OXNARD AIRPORT 57
MONTAGUE/SISKIYOU CO. ARPT 53
HALF MOON BAY 1 SSW 42
...NEVADA...
MOUNT ROSE SKI AREA 4 NE 80
CARSON CITY 6 SW 72
RENO 2 NE 60
RENO/CANNON INTL ARPT 57
GARDNERVILLE 5 E 54
THE MODERATE TO HEAVY PRECIPITATION IS EXPECTED TO CONTINUE FOR
MUCH OF THE PACIFIC NORTHWEST AND NORTHERN CALIFORNIA THROUGH AT
LEAST SUNDAY. SOME AREAS COULD RECEIVE STORM TOTAL RAINFALL OF 10
TO 12 INCHES...WITH LOCALLY HIGHER AMOUNTS POSSIBLE. IN THE HIGHER
ELEVATIONS OF THE WESTERN U.S...SNOWFALL TOTALS OF 1 TO 3 FEET
WILL BE POSSIBLE...WITH LOCALLY HIGHER AMOUNTS. ADDITIONALLY...
STRONG WINDS ARE EXPECTED ACROSS THE ENTIRE REGION GIVEN THE
STRONG PRESSURE GRADIENT BETWEEN THE HIGH PRESSURE OVER THE
ROCKIES AND THIS LOW PRESSURE SYSTEM.
THE NEXT STORM SUMMARY WILL BE ISSUED BY THE HYDROMETEOROLOGICAL
PREDICTION CENTER AT 100 PM PST. PLEASE REFER TO YOUR LOCAL
NATIONAL WEATHER SERVICE OFFICE FOR ADDITIONAL INFORMATION ON THIS
EVENT.
RYAN
Last Updated: 943 AM EST FRI NOV 30 2012