Calaveras County, California severe weather history spans 47 recorded events between 1980 and 2026. The dominant hazard is flood, accounting for 42.6% of all recorded events. It ranks #3,064 nationally and #50 in California.
47
Recorded events
0
Direct deaths
0
Direct injuries
$8.0M
Property damage
The record
What the Calaveras County, California severe weather history record shows
Across the archive, Calaveras County, California severe weather history averages 1.0 recorded events a year. The busiest stretch on record is the 2020s, with 26 events logged in that decade alone. Roughly 1 events fall before 1990 and 46 from 1990 onward — a gap that reflects the expansion of NOAA reporting practice as much as the weather itself.
The costliest is flood, with $7.6M in reported property damage. In total, 9 distinct hazard types appear in this county archive, each listed with its own dated record below.
By hazard type
Every hazard type recorded in Calaveras County
| Hazard | Events | Deaths | Damage | Max | Span |
|---|---|---|---|---|---|
| Flood | 20 | 0 | $7.6M | 0 | 2017–2026 |
| Heavy Rain | 7 | 0 | $0 | 0 | 1998–2021 |
| Thunderstorm Wind | 5 | 0 | $13K | 56 | 2023–2023 |
| Flash Flood | 5 | 0 | $40K | 0 | 1999–2023 |
| Hail | 3 | 0 | $10 | 1.75 | 2005–2020 |
| Tornado | 2 | 0 | $0 | EF1 | 1980–2023 |
| Debris Flow | 2 | 0 | $15K | 0 | 2015–2016 |
| Wildfire | 2 | 0 | $290K | 0 | 1996–1999 |
| Lightning | 1 | 0 | $0 | 0 | 1999–1999 |
Decade by decade
Calaveras County, California severe weather history by decade
Reporting practice changed over time — early decades are undercounted, not calmer.
Tornado tracks
Paths crossing this county
2 mapped tornado paths intersect this county: 2 touched down inside it and 0 crossed in from a neighbouring county. This comes from path geometry, not county-tagged reports.
| Date | Scale | Deaths | Injuries | Path length | Origin |
|---|---|---|---|---|---|
| 2023-01-10 | EF1 | 0 | 0 | 0.4 mi | Touched down here |
| 1980-07-29 | EF0 | 0 | 0 | 0.1 mi | Touched down here |
From the record
What the reports say
Written by National Weather Service staff at the time of the event · public domain
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 concrete over about 8 six inch pipes that lie in the river bed. The pipes clogged and the creek overflowed the small bridge. There were also a few small rock slides and mud slides along some of the highways. Highway 26 and Woodhouse Mine Road in West Point had a mud slide, but this did not close the road. The road is open however. There was also a small rock slide on Mountain Ranch Road at Rocky Road.
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 yards and max winds of 90 mph.
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.
Context
Risk, population and federal disasters
Relatively Moderate
FEMA NRI risk rating
46,248
Population (ACS)
$457K
Median home value
23
Federal declarations
| Declared | Incident | Title | Type |
|---|---|---|---|
| Sep 3, 2025 | Fire | 2-7 FIRE | FM |
| Apr 3, 2023 | Severe Storm | SEVERE WINTER STORMS, STRAIGHT-LINE WINDS, FLOODING, LANDSLIDES, AND MUDSLIDES | DR |
| Mar 10, 2023 | Flood | SEVERE WINTER STORMS, FLOODING, LANDSLIDES, AND MUDSLIDES | EM |
| Jan 14, 2023 | Flood | SEVERE WINTER STORMS, FLOODING, LANDSLIDES, AND MUDSLIDES | DR |
| Mar 22, 2020 | Biological | COVID-19 PANDEMIC | DR |
| Mar 13, 2020 | Biological | COVID-19 | EM |
Quick answers
Frequently asked
How many severe weather events have been recorded in Calaveras County, California?
47 events are on record between 1980 and 2026, causing 0 direct deaths and $8.0M in property damage.
What is the most common severe weather hazard in Calaveras County?
Flood, with 20 recorded events — 42.6% of everything in the archive for this county.
How many tornadoes have crossed Calaveras County?
2 mapped tornado paths intersect the county boundary; 2 of them touched down inside it. This is derived from path geometry, not county-tagged reports.
How many federal disaster declarations cover Calaveras County?
23 federal disaster declarations from FEMA include Calaveras County, each tied to a specific incident period.
How risky is Calaveras County compared with the rest of the country?
FEMA's National Risk Index rates Calaveras County as relatively moderate risk, placing it in the 87 percentile of its state for expected annual loss.
Where does the Calaveras County, California severe weather history data come from?
Every figure is drawn from United States federal public-domain records: NOAA/NCEI Storm Events for the event archive, NOAA SPC SVRGIS for mapped tornado paths, FEMA for disaster declarations and risk ratings, and the U.S. Census for population context. Dates are shown in UTC and recent entries may still be revised by NOAA.
Nearby
Neighbouring counties
- Butte County 179
- Colusa County 35
- Amador County 29
- Contra Costa County 108
- Alpine County 44
- Del Norte County 47
Cite this page
“Calaveras County, California.” Severe Weather History. severeweatherhistory.com/county/california/calaveras-county/ · Data: NOAA/NCEI, FEMA, U.S. Census — public domain.