Teton storm history

On Tuesday evening, August 2, 2022 lightning struck a group of backpackers camped at Enos Lake in the Teton Wilderness. One person, a 22-year-old male, died in the incident, while another, an adult male, sustained major injuries. The lightning bolt reportedly hit the backpackers …

Lightning struck Grand Teton mountain in Grand Teton National Park injuring 17 climbers that were among three separate private climbing parties. One of the injured ultimately fell 2,000 feet to his death as an indirect result of the lightning strike. The climbers were all above 1…

Early morning, high based showers developed over the Tetons and moved into the Jackson Valley. A downdraft off of one of the shower caused 3 balloons to crash to the ground south of Teton Village. People were thrown from the baskets with the hard landings. In total 11 people went…

A single lightning bolt injured nine visitors at Old Faithful in Yellowstone National Park. The visitors were on walkways and boardwalks surrounding Old Faithful Geyser when the strike occurred around 1430MST. One victim was air lifted to an Idaho medical center to receive treatm…

The Jackson Hole airport reported a wind gust of 67 mph.

A 60 mph wind gust was reported at the weather station at the Teton Saddle.

The public reported limbs down in Jackson. Downed trees knocked out power to 383 customers in Wilson.

Hundreds of trees were downed in and around Wilson WY. Some trees landed on power lines, resulting in a loss of power for several hours in Wilson. Pictures shared by emergency management showed fallen trees which had damaged homes, businesses, and vehicles.

A 73 mph was measured at the Teton Saddle weather sensor.

Trees were reported down by the public between Alta and the Grand Targhee Ski Resort.

A skier-triggered avalanche occurred and deposited snow in Flat Creek. This snow created a temporary dam and lead to the creek rising out of its banks, bringing minor flooding to a townhome development and the parking lot of a gas station. Heavy equipment was called that night an…

A supercell thunderstorm moved over the Bridger Teton National Forest to the east of Jackson, WY. Strong outflow winds from the supercell downed hundreds of trees over an approximately 6 mile path. There was extensive damage to the Crystal Creek Campground, where people were trap…

The public reported quarter size hail on Teton Pass.

The Teton County Emergency Manager reported a tree down in the town of Jackson, WY.

Time of event is based on observations sites in the region, and the time of discovery of trees down.

The Teton County Emergency Manager reported penny-sized hail in Jackson.

A 61 mph wind gust was reported at the Jackson Hole Airport.

A heavy rain and hailstorm caused a mudslide in Hoback Canyon. The mud and rockslide closed US 26/89 for several hours on the evening of July 1st.

Several trees were damaged at the Colter Elementary School south of Jackson, Wyoming. One tree fell on the school, causing minor roof damage.

A man was struck by lightning in the parking lot of the Jackson Hole airport. The man survived but suffered a broken nose and jaw as well as three broken ribs.

The Teton County emergency manager reported flooding around the Moulton Loop and the north end of Spring Gulch Road from a combination of rain and rapid snow melt. Several side roads had water across them and a house had basement flooding from the floodwater.

A trained spotter reported nickel size hail north of Teton Village.

Up to two inches of rain fell onto deep snow pack in the Jackson Valley. The very heavy weight on roofs caused some minor damage to buildings, including to the police station. The rain also caused rapid snow melt that led to areas of minor flooding.

The public reported quarter sized hail at Colter Bay Village.

Thunderstorm outflow wind descended the east slopes of the Teton Range and generated a swath of damage from near Wilson north along the Moose-Wilson Road and through Grand Teton National Park. The damage began near Wilson around 1645MST and spread north until shortly after 1700MS…

Trees 50 to 60 feet tall were toppled in the town of Jackson by outflow from a collapsing thunderstorm. At least one vehicle was damaged.

Rainfall of one-half to one inch fell in 20 to 30 minutes in the steep terrain of Paintbrush Canyon. A National Park Service backcountry trail crew working in the canyon reported hearing a rumbling sound before witnessing a large mudslide. The slide washed out multiple sections o…

Numerous spotters reported nickel to quarter sized hail in and around Colter Bay.

A public report indicated hail of penny to nickel size fell a few miles west of Jackson.

Nickel sized hail was seen at Moose by a trained spotter.

A wind gust to 72 mph was recorded at the Jackson Hole Mountain Resort.

Gusty outflow wind from a collapsing rain shower blew down or broke over 100 trees at Colter Bay Campground and RV Park. Three or four of the falling trees struck and damaged vehicles at the park. One large branch, estimated to be 40 feet long and nearly one foot in diameter, str…

A wind gust of 58 mph was measured at the Jackson Hole Mountain Resort.

The Teton County Sheriff's Office relayed that thunderstorm winds downed several trees in Wilson.

Numerous storm spotters reported pea to quarter sized hail in Jackson.

Nickel sized hail was reported a few miles south of Wilson.

A microburst associated with a strong thunderstorm that developed near Rafter J Ranch and swept north caused widespread tree and property damage. Most of the damage was concentrated in Jackson and in a swath from south of town to the northwest of town toward Teton Village. Dozens…

A collapsing thunderstorm produced damaging outflow wind. Several large trees and power poles were blown down, especially in the area of Colter Bay and Pilgrim Creek in Grand Teton National Park. Several interior service roads in the park were temporarily blocked by downed trees.…

Nickel sized hail and wind gusts approaching 50 mph were reported at the Signal Mountain Marina.

Hail to the size of nickels was reported at Signal Mountain Lodge.

Multiple trees were downed around Jenny Lake and across Grand Teton National Park. One vehicle on the Jenny Lake Scenic Loop lost its windshield because of a fallen tree. Most trees were less than one foot in diameter. A mesonet station about four miles south recorded a peak wind…

Several trees were downed in a swath from the Death Canyon Trailhead east across the Moose-Wilson Road. Motorists were trapped on the road by fallen trees which were blocking passage. One vehicle was damaged near Death Canyon due to a fallen tree.

Power lines were reported down in Wilson as was a six inch diameter tree just west of town. A local energy company had to install one new pole and rebuild six others. One power line fell on Fish Creek Road and stopped traffic.

National Park Service personnel estimated penny sized hail at the South Entrance to Yellowstone National Park.