LIVE · NOAA/SPC DATALAST 30 DAYSLOCAL · 75-MILE RADIUS
Great Falls Hail Map7 Hail Events — Last 30 Days
Great Falls and the surrounding Cascade County area frequently experience severe summer thunderstorms capable of producing damaging hail. Use our interactive map to track recent storm paths, hail sizes, and affected neighborhoods from Black Eagle to the South Side. This page shows live NOAA/SPC hail reports for Great Falls in the last 30 days.
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Hail Events
7
Active Days
2
Counties Hit
3
Largest Hail
2.50" (golf ball)
Scope: reported hail within 75 miles of Great Falls during the rolling 30-day source window · Retrieved Sep 15, 2026, 8:18 PM UTC
Sorted nearest to Great Falls city center · Source: NOAA Storm Prediction Center
1.00" (quarter)
9 W Monarch, Cascade County
Sep 13, 2026 · 11:45 PM · 31.6 mi from Great Falls
Location estimated. (TFX)
Moderate
1.00" (quarter)
4 N Monarch, Cascade County
Sep 13, 2026 · 3:00 AM · 32.7 mi from Great Falls
Delayed Report: A trained weather spotter reported quarter (1.00 inch) sized hail at 9 PM 9/13. (TFX)
Moderate
1.00" (quarter)
3 SSE Raynesford, Judith Basin County
Sep 13, 2026 · 12:10 AM · 33.6 mi from Great Falls
Time estimated from radar. (TFX)
Moderate
1.00" (quarter)
4 SSW Geyser, Judith Basin County
Sep 6, 2026 · 1:08 AM · 41.9 mi from Great Falls
Estimated. (TFX)
Moderate
1.00" (quarter)
Wolf Creek, Lewis and Clark County
Sep 6, 2026 · 12:30 AM · 49.7 mi from Great Falls
Public reported quarter-sized hail in Wolf Creek. (TFX)
Moderate
Recent Hail Reports — Great Falls
Showing 7 of 7 events within 75 miles of Great Falls · Nearest to Great Falls first · Updated every 6 hours
Date
Location
County
Hail Size
Distance
Notes
Sep 13, 2026
9 W Monarch
Cascade
1.00" (quarter)
31.6 mi
Location estimated. (TFX)
Sep 13, 2026
4 N Monarch
Cascade
1.00" (quarter)
32.7 mi
Delayed Report: A trained weather spotter reported quarter (1.00 inch) sized hail at 9 PM 9/13. (TFX)
Sep 13, 2026
3 SSE Raynesford
Judith Basin
1.00" (quarter)
33.6 mi
Time estimated from radar. (TFX)
Sep 6, 2026
4 SSW Geyser
Judith Basin
1.00" (quarter)
41.9 mi
Estimated. (TFX)
Sep 6, 2026
Wolf Creek
Lewis and Clark
1.00" (quarter)
49.7 mi
Public reported quarter-sized hail in Wolf Creek. (TFX)
Sep 6, 2026
2 E Windham
Judith Basin
1.75" (golf ball)
64.1 mi
Report from mPING: Golf Ball (1.75 in.) Estimated. (TFX)
Sep 6, 2026
6 N Moccasin
Judith Basin
2.50" (golf ball)
70.3 mi
Report from mPING: Tennis Ball (2.50 in.) Estimated. (TFX)
About These Great Falls Hail Reports
THOR displays the most recent reported hail events from the NOAA Storm Prediction Center. Reports are preliminary and may be corrected or updated by the source.
This page is a 75-mile Great Falls area summary for the rolling 30-day window. Use THOR’s interactive map to research a ZIP code, address, county, or place and review the broader storm context.
Recent Hail Reports Near Great Falls
Great Falls sits in a region of Montana prone to intense summer convection, peaking in July and August. The city has seen significant hail events, including a notable storm in August 2019 that dropped golf-ball-sized hail, causing widespread roof and vehicle damage across the metro area.
Top Hail Markets in Great Falls
Black Eagle
Malmstrom AFB
Vaughn
Sun Prairie
Cascade
How THOR Helps Great Falls Contractors
✓Real-time hail event maps updated from NOAA/SPC data
✓Radar replay — scrub through any storm frame by frame
✓Impact density by county and ZIP code
✓CSV export for SalesRabbit, Spotio, and Excel
✓Push alerts when hail hits your target area
✓Property storm history reports for door-to-door canvassing
Track Great Falls Hail Events in Real Time
Open the full interactive app with a free 14-day trial: the Great Falls hail map, hail swaths, radar replay, ZIP and address search, built-in canvassing, and CSV export. No card required.