####018006455#### ACUS43 KWBC 061504 SCCNS3 Storm Summary Number 3 for West Coast Multi-Hazard Atmospheric River Events NWS Weather Prediction Center College Park MD 700 AM PST Fri Jan 06 2023 ...Heavy rain/snow and high winds anticipated as the next Atmospheric River arrives today... Winter Storm Warnings are in effect for portions of the Sierra Nevada, Transverse Range, western Nevada, and the higher elevations of Utah. Winter Weather Advisories are in effect for portions of the The Caribou Range and portions of the Front Range. Winter Storm Watches are in effect for portions of the central and southern Sierra Nevada. Flood Watches are in effect for much of the Central Valley of California. High Wind Warnings and Wind Advisories are in effect for portions of California and Oregon. For a detailed graphical depiction of the latest watches, warnings and advisories, please see www.weather.gov At 600 AM PST...The original low pressure center that brought the initial atmospheric river is now weakening, with a minimum pressure of 984 mb (29.05 in Hg) is located about 350 miles (600 km) south of Juneau, AK. However, new dominant low pressure center, with a minimum pressure of 976 mb (28.82 in Hg) is located about 750 miles west of Portland, OR. This new dominant low contains a wide swath of heavy precipitation currently making its way toward the California/Oregon coastline. Latest surface observations and RADAR indicate relatively dry conditions across much of central and southern California with some light to moderate precipitation falling over northern California. There is also some moderate rain and snow falling ahead of the original frontal boundary in the Intermountain West, particularly in southeastern Idaho, northern Utah, and western Colorado. ...Selected preliminary Storm Total Snowfall in inches from 700 AM PST Wed Jan 04 through 600 AM PST Fri Jan 06... ...CALIFORNIA... SOUTH LAKE 1 NNE 22.0 JUNE MOUNTAIN SKI BASE 18.0 LONE PINE 11 SW 17.0 MAMMOTH MOUNTAIN SKI BASE 16.0 HEAVENLY SKI BASE 12.0 HETCH HETCHY 10 NE 12.0 ...NEVADA... MT CHARLESTON 12.0 MT ROSE SKI BASE 12.0 ...UTAH... BRIGHTON 17.0 ALTA 10.0 ...Selected preliminary Storm Total Rainfall in inches from 700 AM PST Wed Jan 04 through 600 AM PST Fri Jan 06... ...CALIFORNIA... OLD MAN MOUNTAIN 6.57 FRENCH GULCH 5.60 THREE PEAKS 5.59 LOS GATOS 4.17 MORAGA 2.4 NNW 3.82 BURLINGAME 2.0 WSW 3.71 UKIAH MUNICIPAL APT 3.21 THOUSAND OAKS 2.1 WSW 2.91 K6BPM SANTA BARBARA 2.39 ATASCADERO 2.3 NE 2.31 ROHNERT PARK 0.9 SW 2.30 SACRAMENTO INTL APT 2.16 SAN FRANCISCO INTL APT 1.97 LOS ANGELES INTL APT 1.60 HOPLAND 8 SSE 1.50 OXNARD NWS 1.44 SANTA BARBARA MUNICIPAL APT 1.20 REDDING MUNICIPAL APT 1.17 ...Selected preliminary Peak Wind gusts in miles per hour earlier in the event... ...CALIFORNIA... KIRKWOOD MEADOWS 1.2 S 119 GRAPEVINE 3 SSE 104 PULGA 2 NNW 102 PABLO POINT 101 YORKVILLE 5.5 NW 95 CAPETOWN 6 ENE 94 COBB RIDGE WEST 91 ROAD TO RANCHES 90 HIGH GLADE LOOKOUT 89 FERNDALE 6.4 S 88 MAGIC MOUNTAIN TRUCK TRL 87 AMERICAN HOUSE 6 NW 84 AGUA DULCE 8 S 81 BIG BEAR CITY 13 ESE 72 MOUNTAIN GATE 3 NNE 72 CRESCENT CITY 1 ESE 69 JULIAN 9 S 65 BLACK MOUNTAIN 7 E 64 Precipitation associated with the first atmospheric river has mostly subsided by this morning, but the next atmospheric river event is forecast to arrive tonight into northern California, before spreading southward to the central portion of the state on Saturday. Widespread additional rainfall of 3-5+", with locally heavier cases possible, is expected tonight and into this weekend from this next atmospheric river event. Though these are lesser accumulations than the previous atmospheric river, the cumulative effect of an additional several inches of rainfall after recent heavy precipitation will lead to considerable flood impacts this weekend, including rapid water rises and mudslides over northern and central California. Additionally, flash flooding and debris flows are possible over burn scar areas. An additional 1-2 feet of snow this weekend over the Transverse Range and Sierra Nevada will lead to dangerous travel conditions, especially over 5000 feet. 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. Genz $$