Calaveras storm history
Storm events recorded in Calaveras, California between 1950 and 2025.
45
Total events
2
Tornadoes
3
Hail
23
Floods
0
Deaths
$8.0M
Property damage
Most significant events
Strongest tornadoes, deadliest events, and biggest damage in this county. Up to 50 shown.
East and west bound SR-26 were closed from Iris Way to the North Fork Mokelumne River Bridge due to flooding and a slope failure.
Flood Flood
California Highway Patrol reported a minor mud/rock slide impacting eastbound lanes at State Route 26 and Deardorff Road.
Flood Flood
California Highway Patrol reported a minor rock/mud slide impacting westbound lanes at Obrynes Ferry Road and Duchess Drive.
Flood Flood
CHP reporting large rocks in westbound lane of Westbound Highway 26 from Heavy Rain.
Flood Flood
CHP reporting eastbound lanes flooded at SR-4 and Stallion Way from Heavy Rain.
Flood Flood
CHP reporting giant rock in Eastbound lane of Highway 26 just west of Woodhouse Mine Road from heavy rain.
Flood Flood
CHP reporting northbound lane of Highway 49 flooded just south of San Domingo Creek from heavy rain.
Flash Flood Flash Flood
Calaveras County Public Works reported the closure of Cooper Cove Drive between Black Creek Drive and Cheyenne Road in Copperopolis due to severe road damage by flooding.
Flash Flood Flash Flood
Calaveras County Sheriff Dispatch reported significant roadway flooding with two houses flooded in Copperopolis.
Flood Flood
The California Highway Patrol reported roadway flooding in both lanes of traffic along California Highway 4 at Bonanza Mine Way.
Flood Flood
CHP reported roadway flooding at Mountain Ranch Road and De Moss Lane.
Flood Flood
There was 1 foot of water in the westbound lane between State Route 12 and Evans Road near Valley Springs. Reported by the California Highway Patrol.
Flood Flood
Mud and rocks on the road between Highway 49 and Highway 26 near Mokelumne Hill. Reported by the California Highway Patrol.
Thunderstorm Wind Thunderstorm Wind
Tree down across Mountain Ranch Rd. There was a gust of 65 mph measured at the Airola Road PGE station.
Thunderstorm Wind Thunderstorm Wind
There was a large tree reported down across SR12. There was a gust to 38 mph measured at Mills Ave in eastern San Andreas.
Thunderstorm Wind Thunderstorm Wind
Tree and powerlines across the entire roadway of SR26. There was a gust of 40 mph measured at Barton PGE.
Thunderstorm Wind Thunderstorm Wind
There was a gust of 65 mph measured at 2ENE Carson Hill.
Thunderstorm Wind Thunderstorm Wind
There was a gust of 59 mph measured at 6NNW Hodson.
Tornado EF1 Tornado
A brief EF-1 tornado touched down near a small reservoir and Hogan Dam Road and continued NE for approximately 0.4 miles. It caused extensive tree damage to white oak and pine trees with trees uprooted and topped. The approximate path length was 0.4 miles with a path width of 50 …
Flood Flood
CHP reported the entire roadway flooded along SR 26 near Saint Andrews Rd.
Flood Flood
Fifteen people had to be rescued from the Castle Oaks mobile home park. Multiple homes and townhouses flooded in La Contenta.
Flood Flood
Multiple reports of roadway flooding by California Highway Patrol in and near San Andreas, including State Route 49.
Heavy Rain Heavy Rain
Heavy rain was reported in Calaveras County. Arnold reported 11.60 inches of storm total rain and 9.74 inches south of HWY 88.
Hail Hail
Nickel size hail reported near New Hogan Dam. Duration of hail is estimated.
Flood Flood
California Highway Patrol reported roadway flooding at State Route 4 and Pool Station Road.
Flood Flood
Caltrans reported flooding on pool station road at 9am with the road closing at 9:30am. at 12:05 pm new reports came in that pool station bridge near riata is washed away and that warning signs were put up. Multiple vehicles were still trying to get through.
Flash Flood Flash Flood
Over 2-3 hours 1.5 to 2.5 inches of rain fell. A mudslide was reported at this particular location with the road being closed from Woodhouse Mine to West Point.
Flood Flood
Caltrans reported that the river was running across the roadway way and that highway 4 needed to be closed. At 11:53 am Caltrans sent a notification that Highway 49 was reopened.
Flash Flood Flash Flood
Caltrans is reporting that the roadway is completely flooded.
Flood Flood
Local media reporting flood waters running over Pool Station Road caused road on bridge to crack.
Heavy Rain Heavy Rain
The county reported there were numerous reports of blocked roads due to mudslides and 25 reports of flooded roads across Calaveras County. A line of storms remained stationary over this area with 1.0 inch of rain being reported in an hour which caused these conditions.
Debris Flow Debris Flow
Caltrans reported flooding and debris on Highway 26 between Mokelumne Hill and Glencoe, within the Butte Fire burn area.
Debris Flow Debris Flow
There were three incidents reported in the Butte Fire area. Mud and debris covered Hawver Rd. at Jesus Maria Road in Mokelumne Hill along Calaveras River. Road was closed until the debris was cleared. That intersection has a small makeshift bridge over the creek that is made of c…
Hail Hail
Golf ball size hail fell at Hell's Kitchen Vista.
Heavy Rain Heavy Rain
Various locations in Calaveras County reported 4 to 6 inches of rain on the 13th. This resulted in numerous storm drains becoming clogged which caused local street flooding. Strong, gusty winds brought down large numbers of trees, large branches, and power lines which resulted in…
Heavy Rain Heavy Rain
Hail Hail
Heavy Rain Heavy Rain
Wildfire Wildfire
Lightning Lightning
Lightning disrupted service for 7,000 PG&E customers. County officials reported dozens of grass fires were started as well, but were all quickly contained. No injuries or deaths were reported.
Flash Flood Flash Flood
Heavy Rain Heavy Rain
Heavy Rain Heavy Rain
Wildfire Wildfire
Tornado Tornado
Events by year
| Year | Events | Tornadoes |
|---|---|---|
| 2025 | 6 | 0 |
| 2023 | 12 | 1 |
| 2022 | 3 | 0 |
| 2021 | 1 | 0 |
| 2020 | 2 | 0 |
| 2019 | 6 | 0 |
| 2017 | 1 | 0 |
| 2016 | 1 | 0 |
| 2015 | 2 | 0 |
| 2009 | 1 | 0 |
| 2005 | 2 | 0 |
| 2001 | 1 | 0 |
| 1999 | 3 | 0 |
| 1998 | 2 | 0 |
| 1996 | 1 | 0 |
| 1980 | 1 | 1 |