315
ACUS42 KWBC 210301
SCCNS2
STORM SUMMARY NUMBER 2 FOR WEST COAST ATMOSPHERIC RIVER AND WIND
EVENT
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
700 PM PST WED NOV 20 2024
...HEAVY RAINFALL, HIGH WINDS, AND MOUNTAIN SNOWS ASSOCIATED WITH
A MAJOR ATMOSPHERIC RIVER CONTINUE...
FLOOD WATCHES ARE IN EFFECT OVER NORTHERN CALIFORNIA.
WINTER STORM WARNINGS AND ADVISORIES ARE IN EFFECT FOR THE
CALIFORNIA AND WASHINGTON CASCADES AND SIERRA NEVADA.
HIGH WIND WARNINGS AND WATCHES ARE ACTIVE ACROSS PORTIONS OF
NORTHERN CALIFORNIA AND OREGON.
A GALE WARNING IS ACTIVE FOR THE OFFSHORE WATERS OF OREGON AND
WASHINGTON.
FOR A DETAILED GRAPHICAL DEPICTION OF THE LATEST WATCHES, WARNINGS
AND ADVISORIES, PLEASE SEE WWW.WEATHER.GOV
AT 600 PM PST...AN OCCLUDED 963 MB SURFACE LOW WAS ANALYZED
OFFSHORE BRITISH COLUMBIA. RADAR AND SURFACE OBSERVATIONS SHOW
WIDESPREAD MODERATE TO HEAVY RAINFALL, MOUNTAIN SNOWS, AND GUSTY
WINDS STREAMING INLAND ACROSS NORTHERN CALIFORNIA AND SOUTHERN
OREGON.
...SELECTED PRELIMINARY STORM TOTAL SNOWFALL IN INCHES FROM 600 AM
PST TUE NOV 19 THROUGH 600 PM PST WED NOV 20...
..CALIFORNIA
WEAVERVILLE 10 NE 13.0
LASSEN NATIONAL PARK 3 SE 10.8
..WASHINGTON
MAZAMA 2 S 16.2
SOUTH CLE ELUM 25 SW 14.0
...SELECTED PRELIMINARY STORM TOTAL RAINFALL IN INCHES FROM 600 AM
PST TUE NOV 19 THROUGH 600 PM PST WED NOV 20...
..CALIFORNIA
AUSTIN CREEK 8.72
POINT AREA 4.8 ESE 5.21
HONEYDEW 3.2 SSE 5.05
COOKSIE MOUNTAIN 4.88
FORT DICK .2 SSW 3.01
EEL RIVER CAMP 2.47
..OREGON
BROOKINGS 4.2 ENE 3.27
CEDAR 3.24
O'BRIEN 2 SW 3.24
SOUTH FORK 2.71
CANNIBAL MOUNTAIN 2.28
...SELECTED PRELIMINARY PEAK WIND GUSTS IN MILES PER HOUR EARLIER
IN THE EVENT...
..CALIFORNIA
MATTOLE ROAD 98
ACORN WOMAN PEAK 89
VAN BREMMER 82
INDIAN WELL 80
GAZELLE 79
WEST WEED 74
BOLMUS 70
EAST LAKE SHASTINA 68
WEED AIRPORT 67
..OREGON
ACORN WOMAN PEAK 89
LONG PRAIRIE 82
FLYNN PRAIRIE 80
YAQUINA 73
FLORENCE 67
CROWN POINT 63
SUGARLOAF 61
..WASHINGTON
MOUNT RAINEER 77
CRYSTAL MOUNTAIN 74
W CAPE ELIZABETH 72
KOSMOS 71
CAMANO ISLAND 63
SEATAC AIRPORT 59
SEATTLE 35
HIGHLY IMPACTFUL RAINFALL WILL CONTINUE ACROSS NORTHERN CALIFORNIA
AND THE PACIFIC NORTHWEST, WITH 12-16 INCHES OF RAINFALL EXPECTED
OVER NORTHERN CALIFORNIA AND FAR SOUTHWEST OREGON THROUGH FRIDAY.
HEAVY, WET MOUNTAIN SNOW AND WIND GUSTS EXCEEDING 65 MPH WILL ALSO
MAINTAIN WHITEOUT CONDITIONS AT PASS LEVEL TODAY, BEFORE SNOW
LEVELS RAPIDLY RISE. IN COASTAL AREAS, GUSTY WINDS MAY LEAD TO
ADDITIONAL DOWNED TREES AND POWER OUTAGES.
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.
ASHERMAN
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