Home / States / California
Mariposa County, California
Tornadoes, hail, floods and severe storms recorded here between 1972 and 2025, from NOAA's Storm Events Database. Search an address to see which tornadoes came closest to it.
3
Tornado reports
10
Hail reports
105
Floods since 1996
251
All events
9
Deaths
$18.0M
Property damage
Tornado paths in Mariposa County
The part of each tornado’s path NOAA recorded in this county, 3 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.
Media report of a 20 year old hiker slipping and falling off of cables while descending Half Dome during a thunderstorm which was producing heavy rainfall and gusty winds. The fall resulted in fatal injuries.
Yosemite National Park employees reported two people were killed by a rockslide near the intersection of SR 140 and Big Oak Flat Road in Yosemite National Park.
Report on Twitter that a hiker on the cables of Half Dome in Yosemite National Park slipped and fell off of the cables during a thunderstorm. The hiker was found dead from the fall the next day after a search and rescue was performed.
Mariposa Office of Emergency Services reported several homes flooded and roadways washed out. While many roadways were washed out across Northwestern Mariposa County, the homes were generally impacted near Lake Don Pedro, Hornitos, and the City of Mariposa. The two fatalities tha…
A thunderstorm with heavy rain and lightning moved across Yosemite Valley on the morning of the 21st during a strong winter storm. The thunderstorm briefly generated gusty winds estimated at 40 to 45 mph which caused a tree to fall on a tent. Inside the tent was a park service em…
A young man fell to his death (indirect fatality) while climbing Half Dome in Yosemite National Park. A thunderstorm was in the area at the time of the incident with brief periods of heavy rain. Hail was reported by park rangers on Half Dome and surfaces were reported to be slick…
The Kibbee Complex Fire was allowed to burn for resource management since its ignition on July 20th. It burned a total of 10,100 acres with a final assessed cost of $2.9M. Its location was described as 18 miles NE of Miwok Village in the northwest corner of Yosemite National Park…
The Woodlot Fire inside Yosemite National Park burned 458 acres. The cause is unknown but no structures or fatalities occurred.
The Creek Fire was an arson fire that burned 11,500 acres. There were no fatalities but 11 injuries and 8 structures were lost (4 residences and 4 out-buildings). At one point at least 400 people were forced to evacuate due to the fire and it threatened at least 3000 structures.
The Briceburg Fire burned 728 acres and cost $5M to control by August 3rd The cause of the fire is unknown but no structures were lost.
Flood Flood
California Highway Patrol reported a rock slide on SR 140 near Briceburg resulting in both lanes becoming impassible.
Flood Flood
California Highway Patrol reported roadway flooding at the intersection of Hornitos Rd. and Bear Valley Rd.
Flood Flood
California Highway Patrol reported roadway flooding at the intersection of SR 140 and School House Rd.
Flood Flood
California Highway Patrol reported roadway flooding at the intersection of SR 49 and Fairgrounds Rd.
Debris Flow Debris Flow
California Highway Patrol reported lots of little mudslides along SR 140 in Briceburg.
Debris Flow Debris Flow
California Highway Patrol reported mountain is flooding into roadway with large rocks being left in the road at the intersection of SR 49 and Allred Rd.
Hail Hail
Video evidence of 1.00 inch diameter (quarter sized) hail posted on Facebook.
Flood Flood
California Highway Patrol reported multiple rocks on the roadway on SR 140 near Briceburg.
A newspaper article mentioned that two hikers were injured by a lightning strike while taking shelter in a cave near Half Dome.
Thunderstorm Wind Thunderstorm Wind
The PG&E station at Penon Blanco reported a measured wind gust of 62 mph with a thunderstorm.
Thunderstorm Wind Thunderstorm Wind
California Highway Patrol reported a downed tree blocking the roadway on Old Toll Rd. near the intersection of Pendola Garden Rd.
Flood Flood
Yosemite National Park Rangers reported that the Merced River exceeded its flood stage of 10 feet at Pohono Bridge between June 1 and June 7, June 10 and June 12 and June 14 and 18. The Merced River exceeded its flood stage of 8 feet at Happy Isles between June 14 and 18.
Flood Flood
Yosemite National Park Rangers reported that the Merced River exceeded its flood stage of 10 feet at Pohono Bridge between May 16 and May 31 and exceeded its flood stage of 8 feet at Happy Isles between May 20 and May 23.
Flood Flood
California Highway Patrol reported flooding on Hornitos Rd. at Slate Gulch Rd. and Indian Gulch Rd.
Flood Flood
California Highway Patrol reported mud, dirt and rocks on SR 140 at Briceburg.
Flood Flood
California Highway Patrol reported flooding, snow and debris on Oak Rd. neat Yosemite Oaks Dr.
Flood Flood
California Highway Patrol reported rocks, mud and dirt blocking a lane of Jerseydale Rd. and Triangle Rd. This area was affected by the Oak Fire.
Heavy Rain Heavy Rain
A trained spotter in Ponderosa Basin measured 3.73 inches of rainfall in 8 hours.
Flood Flood
California Highway Patrol reported mud, dirt and rocks blocking the eastbound lane of SR 140 near the intersection of Hites Mine Rd.
Flood Flood
California Highway Patrol reported a tree down blocking the entire roadway at the intersection of Ashworth Rd. and Old Oak Ln.
Flood Flood
California Highway Patrol reported a tree and large rocks washed up in the roadway on SR 140 and the Ferguson Slide Bridge.
Flood Flood
California Highway Patrol reported rock, dirt and mud in the roadway on SR 140 near Guadalupe Fire Rd.
Flood Flood
California Highway Patrol reported a tree washed up on the roadway on eastbound SR 140 east of Guadalupe Fire Rd.
Flood Flood
California Highway Patrol reported a tree washed up on the roadway on eastbound SR 140 east of Hummingbird Ln.
Flood Flood
California Highway Patrol reported a large boulder washed up onto the roadway on SR 140 in Briceburg.
Flood Flood
Public report of mud, dirt and rock washed up at the intersection of SR 140 and Old Highway Rd. in Cathey's Valley.
Flood Flood
Public report of a fallen oak tree on the roadway near the intersection of Ben Hur Rd. and Silver Bar Rd.
Flood Flood
Public report of mud, dirt and rock washed up at the intersection of Whitlock Rd. and Mosher Rd.
Flood Flood
California Highway Patrol reported rocks falling onto SR 140 at Ferguson Slide.
Flood Flood
California Highway Patrol reported water has risen over the bridge and is covering the roadway on SR 140 at Yosemite Oaks Dr.
Flood Flood
California Highway Patrol reported rockslides onto SR 140 at Triangle Rd.
Flood Flood
California Highway Patrol reported roadway flooding on SR 140 near Chase Ranch.
Flood Flood
Public report of a driver stuck in flood waters on the westbound lane of Hornitos Rd. near La Paloma Rd. just west of the Merced River.
Flood Flood
Multiple road slides with heavy rain along Bear Valley Rd. resulted in the road being closed for flooding.
Flood Flood
California Highway Patrol reported Miles Creek was flooding the roadway and SR 140 was closed to the east of the Merced/Mariposa County line.
Flood Flood
Public report of mud, dirt and rocks on SR 140 at Trower Rd.
Flood Flood
Public report of mud, dirt and rocks on SR 140 just west of Old Rd.
Flood Flood
Public report of mud, dirt and rock on the eastbound lane of SR 140 northeast of Briceburg.
Flood Flood
Public report of flooding with debris at Springhill Grade at SR 49 and Drury Ln.
Events by year, as a table
| Year | Events | Tornadoes |
|---|---|---|
| 2025 | 6 | 0 |
| 2024 | 3 | 0 |
| 2023 | 38 | 0 |
| 2022 | 19 | 0 |
| 2021 | 3 | 0 |
| 2020 | 1 | 0 |
| 2019 | 14 | 1 |
| 2018 | 21 | 0 |
| 2017 | 40 | 0 |
| 2016 | 3 | 0 |
| 2014 | 4 | 0 |
| 2013 | 2 | 0 |
| 2012 | 9 | 0 |
| 2011 | 4 | 0 |
| 2010 | 7 | 0 |
| 2009 | 5 | 0 |
| 2008 | 2 | 0 |
| 2007 | 3 | 0 |
| 2006 | 13 | 1 |
| 2005 | 6 | 0 |
| 2004 | 4 | 0 |
| 2003 | 14 | 0 |
| 2002 | 5 | 0 |
| 2001 | 10 | 0 |
| 2000 | 7 | 0 |
| 1999 | 2 | 0 |
| 1998 | 3 | 0 |
| 1996 | 2 | 0 |
| 1972 | 1 | 1 |
Search your address
See every tornado that passed within 25 miles of a place in Mariposa County, measured to its path.
We couldn’t get your location. Check that location access is allowed for this site, or type an address.