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Napa County, California
Tornadoes, hail, floods and severe storms recorded here between 1958 and 2026, from NOAA's Storm Events Database. Search an address to see which tornadoes came closest to it.
1
Tornado reports
7
Hail reports
49
Floods since 1996
93
All events
1
Deaths
$115.2M
Property damage
Tornado paths in Napa County
The part of each tornado’s path NOAA recorded in this county, 1 in all. Zoom in and the paths widen to their surveyed width.
EF0EF1EF2EF3EF4EF5Unrated
Year by year
All storm eventsTornadoes
NOAA's storm database records tornadoes back to 1950 and hail and thunderstorm wind back to 1955, but floods only from 1996 on. Older floods are missing here. For those, the U.S. Geological Survey's stream gauge records and flood reports are the place to look.
Most significant events
The strongest tornadoes, deadliest events and biggest damage here, up to 50.
Flood Flood
A mudslide was reported on the 5000 block of Monticello Road (California Route 121).
Flood Flood
Rocks were coming onto the roadway on California Route 128 at Berryessa Knoxville Road.
Flood Flood
Two large boulders blocked the northbound lane on California Highway 121 near Wild Horse Valley Road.
Flood Flood
The southbound lane of Big Ranch Road at Oak Knoll Avenue was washed out, with the northbound lane flooded.
Flood Flood
A rockslide was reported on State Route 29 just north of Tubbs Lane.
Flood Flood
Large rocks moved to the side of Deer Park Road at Sunnnyside Road.
Flood Flood
Landslide reported as completely blocking the southbound lanes of State Route 29 and Old Lawley Toll Road. About 6 to 8 feet of debris was reported on right hand side.
Thunderstorm Wind Thunderstorm Wind
A large portion of a tree leaned against utility lines on Tubbs lane at California Highway 29.
Flood Flood
Standing water was reported in the slow lane on California Route 221 at California Route 29.
Debris Flow Debris Flow
Rock slide blocking roadway near 2000 Capell Valley Road.
Thunderstorm Wind Thunderstorm Wind
Atlas Peak station reported.
Flood Flood
Closing number 2 lane due to flooding on SR-29 and Hoffman Ln.
Debris Flow Debris Flow
Debris flow blocking almost entire roadway Sr-128 at Steele Canyon Rd.
Flood Flood
CHP reporting partial roadway flooded at Hwy 29 and Tubbs Ln.
Flood Flood
Flooding at Deer Park jwo Silverado Trail, 6 inches of water.
Debris Flow Debris Flow
Debris flow partially blocking northbound lane on Silverado Trail N and Glass Mountain Rd.
Debris Flow Debris Flow
Rock and mud blocking lane one on Silverado Trail.
Flood Flood
Roadway flooding near Pope Valley Cross Rd and Pope Canyon Rd.
Flood Flood
Vehicle at Knoxville Rd and East Side Rd attempted to cross flooded roadway and was swept into the creek. Road had several feet of water and was closed due to flooding.
Debris Flow Debris Flow
Five miles of debris in either direction at SR 121 and Wooden Valley Rd.
Debris Flow Debris Flow
Several trees down and 3 or 4 rock slides along Knoxville Rd.
Flood Flood
Roadway flooding, rocks in both lanes of Butts Canyon Rd between Snell Valley and Pope Valley.
Flood Flood
Road flooded for approx 100 feet at 750 Oakville Cross Rd.
Debris Flow Debris Flow
Rock slide on Howell Mountain Rd at Sunset Dr.
Debris Flow Debris Flow
Mud slide in SB lane of SR 121 and Wooden Valley Rd.
Flood Flood
SR 12 at SR 121 northbound lanes flooded.
Flood Flood
Flooding into the eastbound lane.
Flood Flood
Deer Park Road above Sunnyside Road is flooded.
Flood Flood
Flooding at NB Silverado Trail at Yountville Cross Rd.
Debris Flow Debris Flow
Slide blocking EB lane and partially WB lane of SR 128 near Markley Cove.
Debris Flow Debris Flow
Mudslide partially blocking EB lane of SR 128 and Wragg Canyon Road.
Flood Flood
Golden Gate Dr in Napa area.
Debris Flow Debris Flow
Rockslide entire sb lane.
Debris Flow Debris Flow
Uphill slippage reported on Redwood Road at mile marker 3.5 on the perimeter of the Nuns Fire burn scar. Exact time of occurrence is unknown.
Hail Hail
Lightning Lightning
A tree was struck by lightning at Park Ave and Sonoma Street leaving thousands without power. Reported by the Napa Valley Register.
Flood Flood
Up to 1.5 feet of standing water on north side AKA WB side of the road 2200 Oak Knoll Ave.
Debris Flow Debris Flow
Rocks blocking roadway Atlas Peak Rd near Westgate Dr.
Flash Flood Flash Flood
Milliken Creek at Atlas Peak Rd gauge above flood stage.
Debris Flow Debris Flow
Mud/rocks on Petrified Forest Rd/SR128.
Flash Flood Flash Flood
Napa River at Lodi Lane Stream gauge went above flood stage.
Debris Flow Debris Flow
Mudslide reported at Silverado and Taplin Road. NB lanes blocked by water and mud.
Debris Flow Debris Flow
Mud slide covering west bound lane of Dry Creek Rd.
Flood Flood
Big Ranch Road completely under water at Salvador Ave.
Flash Flood Flash Flood
Heavy rain caused the Napa River at Lodi Lane in Saint Helena CA to exceed flood stage between 3:00-10:30 pm PST on January 10, 2017.
Flood Flood
Brook wood Drive flooded near Brook wood Creek. Road closed until next week.
Flood Flood
Deer Park Road between HWY 29 and Silverado Trail closed due to flooding. Yountville Cross road also impacted.
Flood Flood
Two feet of water in the road near Heather and Oak Circle. Road has been temporarily closed.
Events by year, as a table
| Year | Events | Tornadoes |
|---|---|---|
| 2026 | 2 | 0 |
| 2025 | 3 | 0 |
| 2024 | 4 | 0 |
| 2021 | 1 | 0 |
| 2020 | 1 | 0 |
| 2019 | 20 | 0 |
| 2018 | 3 | 0 |
| 2017 | 15 | 0 |
| 2016 | 4 | 1 |
| 2015 | 3 | 0 |
| 2014 | 3 | 0 |
| 2012 | 7 | 0 |
| 2010 | 3 | 0 |
| 2009 | 1 | 0 |
| 2006 | 1 | 0 |
| 2005 | 1 | 0 |
| 2004 | 3 | 0 |
| 2002 | 4 | 0 |
| 1999 | 1 | 0 |
| 1998 | 1 | 0 |
| 1997 | 6 | 0 |
| 1996 | 1 | 0 |
| 1983 | 2 | 0 |
| 1977 | 1 | 0 |
| 1958 | 2 | 0 |
Search your address
See every tornado that passed within 25 miles of a place in Napa County, measured to its path.
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