Heavy Rain in Montana

Events

469

Deaths

0

Injuries

0

Damage

$49,000

• Flood and Heavy Rain in Montana, May 16 to 22, 20232 deaths · $60,000 · 4 eventsSpring rains across the area resulted in additional high elevation snowmelt which led to elevated water levels along many creeks and streams. Belt Creek flooded for a second time this month. Water levels crested at 6.78 feet at the river gauge along Belt Creek near Monarch.
• Tornado and Flash Flood in Montana, June 16 to 17, 20101 death · 1 injured · $327,000 · EF1 · 22 eventsA strong system ejecting out of the central Rockies brought heavy rainfall and severe thunderstorms to the area during the evening. This episode produced an EF1 tornado in northern McCone county and a microburst in eastern Roosevelt county that killed one person near Froid, MT.
• Avalanche and Winter Weather in Montana, February 21 to 24, 20251 death · $5,000 · 6 eventsAn atmospheric river brought areas of rain and gusty winds. Sub-freezing temperatures resulted in icy road impacts. Avalanches were noted in a few areas.
• Hail and Damaging Winds in Montana, June 10, 2021$1.2 million · 3 in hail · 64 eventsA near stationary low pressure surface trough, warm moist air from the southeast and a strong cold front from the west all combined to allowed many severe thunderstorms to develop and strengthen through the afternoon and evening hours.
• Tornado and Flash Flooding in Montana, July 4, 1998$8.5 million · F0 · 19 eventsSeveral spotters and amateur radio operators reported funnel clouds in and around Laurel.
• Tornado and Hail in Montana, July 5 to 9, 2022$200,000 · EF0 · 89 eventsDisturbances moved through a persistent southwest flow aloft across the region, which continued to provide daily afternoon and evening showers and thunderstorms.
• Flood and Hail in Montana, July 31, 1998$9.0 million · 1.25 in hail · 8 eventsNumerous observations of large hail were reported by spotters, amateur radio operators and National Weather Service personnel. The hail damaged several vehicles in the Billings area, and also caused heavy damage to crops.
• Flash Flood and Hail in Montana, August 14, 2009$4.3 million · 1.75 in hail · 16 eventsSevere thunderstorms moved east across areas mostly south of the Missouri River. The greatest damage occurred in Garfield County.
• Tornado and Hail in Montana, May 20, 2020$737,000 · EF0 · 49 eventsAn expansive surface low pressure area and plentiful moisture shifted into eastern Montana and directed multiple and persistent severe thunderstorms from south to north through the region from mid-afternoon through then late night hours of the 20th.
• Flash Flooding and Hail in Montana, June 6 to 7, 2005$847,000 · 1.5 in hail · 30 eventsDamaging thunderstorm winds blew over a pivot sprinkler. The strong wind destoyed one machine shed. There were multiple reports of structural damage to occupied and unoccupied structures. A couple of cars were damaged from fallen tree limbs.
• Hail and Damaging Winds in Montana, August 6, 2010$1.5 million · 1.25 in hail · 17 eventsAn upper level ridge moved east of Montana during the day bringing southwest flow aloft across eastern Montana. Dewpoints started off low, however a boundary of higher moisture at the surface moved across northeast Montana which became the focus of the intensified convection.
• Hail and Damaging Winds in Montana, August 4, 2002$2.1 million · 1.75 in hail · 8 eventsSupercell thunderstorm formed over the Bitterroot Valley near Hamilton and moved north through the valley, impacting the communities of Stevensville to Florence.
• Flash Flooding and Hail in Montana, July 2 to 6, 2022$700,000 · 61 kt wind · 23 eventsLow pressure along the west coast spread deeper moisture increasing the chances for showers and thunderstorms across the region through Independence Day.
• Tornado and Hail in Montana, June 30, 2009$100,000 · EF0 · 22 eventsStrong supercells formed over the region, producing large hail, damaging winds, funnel clouds and at least one tornado.
• High Wind and Strong Wind in Montana, October 15 to 16, 2012$105,000 · 67 kt wind · 17 eventsA vigorous Pacific storm system moved into western Montana, with an associated strong upper jet. Large scale lift and a surface cold front caused widespread strong surface winds and significant precipitation totals.
• Hail and Lightning Strike in Montana, July 5, 1998$110,000 · 2.75 in hail · 10 eventsDime to quarter sized hail reported.
• Tornado and Hail in Montana, June 16 to 17, 2007EF1 · 30 eventsA very unstable airmass supported the development of widespread thunderstorms over North Central Montana during the afternoon and evening hours of the 16th and continuing into the early morning hours of the 17th.
• Flash Flooding and Hail in Montana, August 6, 2009$57,000 · 2.5 in hail · 14 eventsA strong low pressure system and associated cold front moved into the Northern Rockies, creating a favorable environment for strong hail producing thunderstorms and heavy rain.
• Tornado and Flash Flooding in Montana, May 26 to 28, 2010$52,000 · EF0 · 14 eventsAn upper low to the west of the area coupled with a low level jet that brought an unstable airmass from the central plains to produce severe thunderstorms and an isolated tornado.
• Hail and Damaging Winds in Montana, July 3, 2009$30,000 · 1 in hail · 23 eventsA cold front dropped south out of Saskatchewan firing up thunderstorms that impacted an area mostly north of the Missouri River.
• Flash Flooding and Hail in Montana, July 22, 20112.75 in hail · 45 eventsA very unstable air mass, a potent low pressure trough, and supporting deep-layer shear combined to develop numerous severe thunderstorms.
• Flash Flooding and Hail in Montana, June 8, 20214 in hail · 38 eventsA quick-moving low pressure disturbance from the southwest interacted with a warm front and a very unstable atmosphere to develop and sustain multiple long-track severe thunderstorms and some flash flooding.
• Flash Flood and Hail in Montana, July 28, 2010$28,000 · 1 in hail · 16 eventsA Supercell thunderstorm formed in northern Phillips County near Whitewater and moved southeast through the Glasgow area (Valley County). The storm quickly dissipated southeast of Glasgow in northern McCone County.
• Flash Flooding and Hail in Montana, July 2 to 3, 2007$2,000 · 2 in hail · 37 eventsA major severe weather episode occurred from mid-afternoon on the 2nd through the pre-dawn hours of the 3rd. A very moist and unstable southwest flow aloft was responsible for the severe weather.
• Flash Flooding and Hail in Montana, August 9, 2013$36,000 · 52 kt wind · 8 eventsA wave of monsoon moisture tracked south to north across western Montana on August 9, 2013.

Heavy Rain everywhereEvery kind of event in Montana

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24.