Tuolumne storm history

Thunderstorms developed in the afternoon along the Sierra Nevada crest and spread eastward. Witnesses reported a 66-year old female died in a campground after a lightning strike hit the area. No enter/exit woulds reported to confirm a direct hit. However, evidence would suggest c…

All public entities in Tuolumne County completed a preliminary estimate of storm damage for February through April, with costs well over $42 million.

A period of heavy rain upstream from Moccasin Dam, in which about three inches fell during four hours led to significant erosion and at least one landslide. It caused a massive amount of water and debris to run downhill into the Moccasin Reservoir. The water level rose to 3 times…

Extensive flooding in downtown Groveland, as floodwaters ran down the main street, Highway 120. Property was damage and water rescues for stranded residents. There was significant damage done to Groveland Community Hall and Mary Laveroni Community Park. Preliminary estimates from…

Caltrans District 10 reported a mudslide on State Route 49 between Fairview Lane and Mill Villa Court in Sonora due to heavy rain.

Flash flooding was reported in the downtown area of Sonora due to heavy rain from a severe thunderstorm. Tuolumne County OES reported a creek flowing out of banks, and water flowing over Washington Street, impacting approximately 25 to 30 homes, 10 public buildings and 30 busines…

Tuolumne County Emergency Manager reported significant roadway flooding in the town of Tuolumne with creeks overflowing their banks.

Tuolumne County Emergency Manager received multiple reports of a funnel cloud, observed along Campo Seco Road in Jamestown.

A trained spotter reported 1 inch hail in Downtown Sonora.

Tuolumne County Emergency Manager reported several trees and power poles down near the intersection of Martin Lane and Campo Seco Road. The Mount Elizabeth RAWS reported a maximum wind gusts of 61 mph.

Tuolumne County OES reported extensive tree damage at Woods Creek Mobile Home Park with 34 trees down.

Tree down across Italian Bar Rd. There was a gust of 37 mph measured at nearby Columbia Airport.

Caltrans reported a Westbound SR120 lane closure at Tulloch Road Crossover due to roadway wash-out/slip-out.

Roadway flooding with several inches of water reported at Via Este Road and State Route 108.

Heavy rain was reported in Tuolumne County. Reported storm totals reached 5.63 inches just south of Cherry Lake to 6.91 inches near Twain Heart.

A thunderstorm produced heavy rain at Tuolumne Meadows with 1.25 measured at the ranger station between 1500 and 1700 PDT. The storm also produced pea sized hail and flooded some tents at the Tuolumne Meadows Campground.

Park Service Rangers reported flash flooding on SR 120. A nearby weather station at Tuolumne Meadows reported 0.42 inches of rain and hail between 1500 and 1600 PST.

Yosemite National Park dispatch reported several trees donwed in the Hetch Hetchy area due to strong thunderstorm wind gusts.

The Crane Flat RAWS reported a peak thunderstorm wind gust of 59 mph.

Yosemite Park Rangers reported flash flooding near the Dana Creek and State Route 120 intersection at Tuolumne Meadows where 40 people were rescued when the river swelled and separated them from the highway.

Caltrans reported road flooding in the Sonora area.

Multiple reports of road flooding in Sonora, CA.

Caltrans reported road flooding in Sonora, CA.

Tuolumne County Sheriff Reported flash flooding at Woods Creek near Stockton St. in Sonora, Ca.

Caltrans reported that roadway was flooded.

Tuolumne County Sheriffs Office reports there are road closures along Red Hills Road in Chinese Camp, Sims Road in Jamestown, and Bell Mooney Road in Jamestown.

Overflowing water from a strong thunderstorm which produced heavy rain closed down a section of State Route 120 near Tuolumne Meadows. The duration of the flash flood was around one hour.

Tuolumne Meadows received 0.98 inches of rainfall was measured in a one hour period.

Hail covered the ground to a depth of just over 2 inches. Most of the hail was pea size, but the larger hailstones were as large as nickels and quarters. The hail for about 15 minutes.

Full closure of Highway 49 from Moccasin Creek to Bear Valley Road due to road washout.

A Yosemite National Park employee reported a rock slide over Park Road near Hetch Hetchy.

An NWS storm survey team determined straight line winds from a micro-burst associated with a severe thunderstorm caused damage in Twain Harte, CA Numerous trees were brought down, and a home was damaged. Winds gusted to an estimated 105 mpg. Significant wind damage was done along…

A photo on Twitter showed large hail in Groveland, estimated to be 1.25 in diameter.

California Highway Patrol reported a rock slide due to heavy rainfall on Highway 140 east of Ferguson Bridge about 5 miles north northwest of Midpines.

Spotter reported 1.01 inches of rain fell in 4 hours. Hasn't seen any flooding, but heard small creeks are running high and fast.

There were 5 inches of rain measured with 2 inches of new snow over a 24-hour period.

The main Lake Don Pedro Marina (LDPM) sustained damage to its structure that led to the evacuation of its employees until the weather system died down. The facility was closed for repairs.

There was a 24 hour total of 6.53 inches of rain measured near Cedar Ridge at 4050 feet elevation. The storm total was 7.58 inches. Observer location Sonora.

Hail to the size of nickels was reported.

Hail to 1 inch in diameter reported in Dardanelle.

Tuolumne Public Works reported a culvert under Evergreen road at the Peach Growers Campground that got overwhelmed by the intensity of rainfall from a thunderstorm.

Heavy rain reported., 1.10 inches storm total.

Stream bank erosion, with some scouring, rilling, and sheet erosion. Sediment deposited in creek bed at multiple road/creek crossings. There was also float-able debris that was later removed. Road was over-topped at multiple locations. Estimated Granite Creek Basin flow of 1200 C…

Thunderstorms produced heavy rain over Rim Fire Burn scar. Storm total of 1.31 inches in 2 hours, heavy rain for 30 minutes.

Thunderstorms produced heavy rain over Rim Fire Burn scar. Storm total of 1.69 in, for approximately 2 hours.

The Rim Fire burn scar area received 0.20 to over 1 of rainfall from thunderstorms on the early morning of March 6th. The ground was previously saturated due to rainfall for several days prior to this event. There were approximately 10-11 different debris flow slides along the ro…

Twenty four hour rainfall total at Tuolumne Meadows was 3.70 inches.