A strong winter storm brought heavy mountain snow, moderate to heavy rain with river and roadway flooding, and gusty southerly winds February 3rd through 5th. Multiple feet of heavy snow were observed above 5000 feet, with 2 to 5 inches of rain observed in the Valley and foothills and southerly wind gusts of up to 50 mph.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS STO wrote it up.
A strong winter storm brought heavy mountain snow, moderate to heavy rain with river and roadway flooding, and gusty southerly winds February 3rd through 5th. Multiple feet of heavy snow were observed above 5000 feet, with 2 to 5 inches of rain observed in the Valley and foothills and southerly wind gusts of up to 50 mph. There were numerous reports of flooding in the Valley that led to multiple search and rescue efforts and prolonged road closures. Portions of Highway 99 were closed due to flooding, State Route 70 was closed from Greenville Wye to Jarbo Gap due to a slide, and Interstate 80 was closed in both directions for about 5 hours from Nyack to Truckee due to crashes and icy roads. There were also reports of numerous downed branches and trees across the area with associated power outages. Glenn County reported over 20 road closures across their area due to flooding and storm damage.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Sacramento, CA wrote its last area forecast discussion before the first event at Feb 3, 5:00 AM PST, 5 hours earlier.
Area Forecast Discussion National Weather Service Sacramento CA 500 AM PST Mon Feb 3 2025 .SYNOPSIS... Stormy weather is expected to return today and persist for much of the week ahead as an atmospheric river plume brings periods of moderate to heavy rain and mountain snow and gusty southerly winds to interior NorCal. Major mountain travel impacts are anticipated as a result. && .DISCUSSION... The first of three storms systems is winding down, with the next system arriving today. As a result there is a relative lull in the precipitation this morning, except for radar imagery showing moderate showers over the northern mountains and moderate to locally heavy showers over Shasta County. A Flood Warning for Shasta County was issued yesterday afternnoon due to heavy rain from a convergence area which developed. This produced a band of heavier showers that have since diminished and so the Warning was cancelled. Redding received a total of 4.22 inches of rainfall over the past 24 hours. Cow Creek near Whitmore recorded 5.28 inches of rainfall. Some roadway flooding was reported in the area by the CHP through the evening. There is the potential for this convergence area to possibly develop again this evening/tonight. Precipitation will remain mainly north of I-80 in the morning, then drift southward through the rest of the area by afternoon. Latest probabilities of additional precipitation exceeding 1 inch for the next 24 hours are around 100 percent for the northern Sacramento Valley, trending to around 40 percent for the Sacramento metro area, and 10 to 30 percent for the northern San Joaquin Valley. So heavier precipitation amounts will tend to be over the northern Sacramento Valley and surrounding foothills and mountains north of Interstate 80. Heavier precipitation spreads through the entire area tonight through Tuesday night. Rainfall totals through the event around 1 to 3 are expected in the Valley, A Flood Watch has been issued from 4 pm this evening to 4 am Wednesday, for below 3500 feet for the northern Coastal Range and Shasta County, for below 5500 feet for the rest of the area. Expect 3 to 7 inches of rainfall for Shasta County and the Sierra foothills. For the mountains 4 to 10 inches of liquid equivalent, though for elevations above 5500 feet much of this will largely be in the form of snow. Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Creeks and streams may rise out of their banks. Flooding may occur in poor drainage and urban areas. There is the potential for mud and rockslides in the foothills and mountains. Cool air from the Gulf of Alaska will gradually drop southward today and tomorrow, with lower snow levels than we saw with the first storm. Snow levels early this morning start around 7500 feet, then lower some to 6000 to 7000 feet by this evening. More significant lower is expected Tuesday afternoon, when snow levels for the northern mountains drop below 4000 feet, then below 3000 feet by Tuesday evening. A Winter Weather Advisory has been issued for the northern Coastal Range and the mountains of Shasta County below 3500 feet from 10 pm tonight through 10 pm Tuesday night, with 4 to 8 inches of snow, and up to 16 inches over peaks. Probabilities of exceeding 4 inches above 4000 feet sit around 40 to 60 percent. A Winter Storm Warning continues for the northern Sierra and southern Cascades, mountains of western Plumas County and Lassen National Park from 1 pm this afternoon to 10 am Wednesday for total snow accumulations of 1 to 3 feet above 5500 feet, up to 4 feet over peaks. Winds could gust to 60 to 70 mph, which along with heavy snowfall rates of 1 to 2 inches an hour at times could bring periods of whiteout conditions. Gusty southerly winds develop over the northern and Sacramento Valley today, with gusts at Red Bluff already reaching 65 mph early this morning. A Wind Advisory is in effect for the northern and central Sacramento Valley and the northeast foothills for south winds 15 to 25 mph with gusts up to 45 mph. This continues through 4 pm Tuesday. That Wind Advisory has been extended into the southern Sacramento Valley, the Delta, and the northern San Joaquin Valley for 10 am to 4 pm Tuesday. With a break between the early week trough(storm #2) and then a late week shortwave (Storm #3), there will be a brief lull in the precipitation with some scattered light to moderate precipitation will be possible on Wednesday. Winds will remain breezy, but are also expected to decrease as the trough exits eastward. Storm #3 arrives on Thursday as a cold trough off the Pacific Northwest approaches and begins to move inland Thursday night. Snow levels are expected to be around 3000-4000 feet over the northern mountains and 4000 to 5000 feet over the northern Sierra. Moisture amounts have trended a little lower than previously seen, but expect to see heavy snow again, with 1 to 3 feet possible through Thursday night, and another 1 to 2 feet of additional snow possible through Friday. && .EXTENDED DISCUSSION (Friday THROUGH Monday)... Ensemble guidance has cold longwave trough (Storm #3) moving eastward bringing moderate to heavy precipitation through the end of the week, with lower snow levels, thought snowfall accumulations at lower elevations remain somewhat uncertain. The upper foothills (3000 feet) have some potential to see some snow, currently forecast by the NBM to see light accumulations around an inch. Rainfall amounts look less than the first two storms. Probabilities of precipitation exceeding 1 inch for 48 hours through early Saturday are around 80 percent for the northern Sacramento Valley and surrounding terrain and along the Sierra/southern Cascades, with 20 to 40 percent probabilities further south in the Valley. Snowfall totals of 1 to 4 feet are expected along the Sierra/southern Cascades, with resultant probabilities of exceeding 1 foot of snowfall above 5000 feet around 75 to 95 percent. This heavy snowfall combined with that of earlier storms will make mountain travel even more difficult. Be sure to prepare now for the continued snowy and difficult to impossible wintry travel in the mountains! In addition to precipitation, periods of gusty southerly winds are also expected to continue. For the weekend, ensembles continue to show a trend toward a drier pattern. && .AVIATION... MVFR conditions with areas of IFR/LIFR conditions are expected this morning, mainly in the northern Sacramento Valley and adjacent foothills as a result of scattered showers. Isolated areas of MVFR/IFR will be possible elsewhere in the Valley and in the mountains through 21Z today. MVFR conditions will become more widespread with areas of IFR/LIFR as precipitation coverage increases throughout interior Northern California after 23Z today. Heaviest precipitation will be in the northern Sacramento Valley and Sierra foothills/mountains. Snow levels will be between 6000-7000 feet. Southerly surface winds 15 to 25 kts with gusts 20 to 40 kts until 21Z Tuesday in the northern Sacramento Valley/adjacent foothills and from 00Z Tuesday to 03Z Wednesday elsewhere in the Valley. northern Sacramento Valley. Over the mountains, southerly wind gusts up to 65 kts. && .STO WATCHES/WARNINGS/ADVISORIES... Flood Watch from 4 PM PST this afternoon through late Tuesday night for Carquinez Strait and Delta-Central Sacramento Valley- Motherlode-Mountains Southwestern Shasta County to Western Colusa County-Northeast Foothills/Sacramento Valley-Northern Sacramento Valley-Northern San Joaquin Valley-Shasta Lake Area / Northern Shasta County-Southern Sacramento Valley-West Slope Northern Sierra Nevada-Western Plumas County/Lassen Park. Winter Weather Advisory from 10 PM this evening to 10 PM PST Tuesday for Mountains Southwestern Shasta County to Western Colusa County-Shasta Lake Area / Northern Shasta County. Wind Advisory until 4 PM PST Tuesday for Carquinez Strait and Delta-Central Sacramento Valley-Motherlode-Northeast Foothills/Sacramento Valley-Northern Sacramento Valley-Northern San Joaquin Valley-Southern Sacramento Valley. Winter Storm Warning from 10 AM this morning to 10 AM PST Wednesday for West Slope Northern Sierra Nevada-Western Plumas County/Lassen Park. &&
The national radar mosaic for the moment the first event began.
34 flood, 2 heavy snow, 1 debris flow. Local standard time, as filed.
A CoCoRaHS observer measured 8 inches of snow in Chester at 4526 ft. The National Operational Hydrologic Remote Sensing Center estimated storm total snow to be between 1 to 3 feet of snow above 5500 feet with over 4 feet at Lassen Peak from February 3rd through February 5th.
California Highway Patrol reported the closure of Franklin Road between Levee Road and Acacia Avenue across the Sutter Bypass due to heavy rain.
Caltrans District 3 measured 15 to 20 inches of snow along Interstate 80 from February 3rd through February 5th above 5500 feet. UC Berkeley Central Sierra Snow Lab measured 25 inches of heavy snow over the same timeframe. Ski resorts in the area measured 1 to 3 feet of snow. The National Operational Hydrologic Remote Sensing Center estimated 1 to 3 feet of snow above 5500 feet with 4 feet at the higher peaks. Interstate 80 was closed in both directions for about 5 hours from Nyack to Truckee due to a crash and icy roads.
California Highway Patrol reported roadway flooding from heavy rain at State Route 36 and Monroe Avenue near Red Bluff.
California Highway Patrol reported flooding of the entire roadway from heavy rain on Oro Bangor Highway between Swedes Flat Rad and Lakeside Market.
California Highway Patrol reported significant flooding in the northbound lane of Oro Bangor Highway and Mission Crest Drive.
California Highway Patrol reported roadway flooding at Central House Road from Lone Tree Road to Palermo Honcut Highway.
California Highway Patrol reported the closure of State Route 99 due to flooding between Keefer Road and Esplanade.
California Highway Patrol reported a flooded lane at Fruitvale Road and Crosby Herold Road, with two vehicles in a nearby ditch.
California Highway Patrol reported a partial road obstruction with dirt in the roadway on the Auburn side at State Route 99 and El Dorado Street from heavy rain.
California Highway Patrol reported roadway flooding from heavy rain of the westbound lanes on Sunset Boulevard.
California Highway Patrol reported roadway flooding from heavy rain with 2 to 3 inches of water in the roadway.
California Highway Patrol reported 3 to 4 large boulder size rocks in the northbound lane due to heavy rain.
Sacramento County Sheriff reported roadway flooding from Deer Creek overflow on Scott Road leading to the closure of Scott Road between Boys Ranch Road and Latrobe Road.
California Highway Patrol reported roadway flooding due to creek overflow from heavy rain.
California Highway Patrol reported flooding in the roadway from heavy rain.
California Highway Patrol reported multiple rocks and mud in the roadway with some larger rocks the size of a smaller vehicle due to heavy rain.
Sutter County Office of Emergency Management reported that Placer Road was closed between Riosa Road and Brewer Road due to flooding from heavy rain.
California Highway Patrol reported the eastbound lane of California Highway 32 was blocked by debris from heavy rain.
California Highway Patrol reported the southbound lane to be full of water at Pitt School Road near Interstate 80 from heavy rain.
California Highway Patrol reported roadway flooding on the bridge near Keefer Road and Hicks Lane from heavy rain.
California Highway Patrol reported roadway flooding from a nearby creek.
California Highway Patrol reported that Kiefer Boulevard was closed between Highway 16 and Kiefer Landfill due to heavy rain.
Road erosion damage was reported by local broadcast media on Middlehoff Lane due to heavy rain and roadway flooding. Nearly a dozen families living on this street were stranded and unable to cross the washed away segment of the roadway due to the depth of the erosion.
California Highway Patrol reported roadway flooding at State Route 99 and Blackberry Avenue with a school bus stuck in the water.
California Highway Patrol reported roadway flooding at State Route 36 and North Main Street from heavy rain.
California Highway Patrol reported 2 inches of water covering both lanes at Ramirez Road and Fruitland Road from heavy rain.
California Highway Patrol reported roadway flooding and a vehicle stalled in 8 to 10 inches of water at Westmont drive and West Sacramento Avenue from heavy rain.
California Highway Patrol reported mud/dirt/rocks and area flooding along Cohasset Road and Rock Creek Road.
California Highway Patrol reported the closure of State Route 70 from Greenville Wye to Jarbo Gap due to a slide from heavy rain.
California Highway Patrol reported Rock Creek overflowing onto the roadway at Hamilton Nord Cana Highway and Wilson Landing from heavy rain.
California Highway Patrol reported significant flooding across State Route 99 leading to road closure.
Water was reported to be going over the bridge near Mesa Road and Esquon Road leading to levee and bridge concerns due to heavy rain.
California Highway Patrol reported 7 to 9 inches of water across the roadway approximately 200 yards east of the Woodson Bridge.
California Highway Patrol reported a bunch of rocks in the roadway from heavy rain blocking the northbound lanes at Salmon Falls Road and Dorado Ridge Trail.
California Highway Patrol reported rocks, dirt and gravel in the roadway at Canyon road and Happy Valley Road from heavy rain that resulted in a traffic collision.
Heavy rain led to flooding of the Sacramento River and damage to the Woodson Bridge Boat Ramp.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in California in 2025Every state in 2025This day in weather historyWarnings in California, February 2025
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 1237923, 1237927, 1237924, 1237928, 1237930, 1237932, 1237933, 1237935, 1237937, 1237938, 1237939, 1237940, 1237941, 1237949, 1237962, 1237981, 1237983, 1237984, 1237985, 1237986, 1237987, 1238187, 1238188, 1238240, 1238189, 1238190, 1238220, 1238234, 1238191, 1238236, 1238192, 1238193, 1238199, 1238194, 1238238, 1238239, 1238195.