Mammoth, MT Live Doppler Radar
Live radar for Mammoth, Madison County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.
What weather hits Mammoth?
Since 1996, the National Weather Service has logged heavy snow or a winter storm on 43 days in the Gallatin and Madison County Mountains and Centennial Mountains forecast zone and Madison County — the most common reported hazard around Mammoth, mostly in April and February. Next come damaging thunderstorm winds (30 days) and high winds (18 days).
| Hazard | Days reported | Most recent | Worst on record |
|---|---|---|---|
| Heavy snow & winter storms | 43 | Apr 2026 | Mar 14, 2023 · $150,000 damage |
| Damaging thunderstorm winds | 30 | May 2026 | Jul 1, 2023 · $20,000 damage |
| High winds | 18 | May 2026 | — |
| Wildfires | 9 | Oct 2025 | — |
| Flooding | 9 | Jun 2020 | — |
| Extreme cold & wind chill | 7 | Feb 2025 | — |
| Avalanches | 3 | Apr 2023 | — |
Source: NOAA NCEI Storm Events Database, 1996–2026 (the latest year is partial). A "day" is a date with at least one report in the Gallatin and Madison County Mountains and Centennial Mountains forecast zone and Madison County; damage is as reported, not adjusted for inflation.
Which radars cover Mammoth?
The closest NEXRAD Doppler radar is KTFX (Great Falls, MT), about 127 miles north-northeast. Radar beams climb as they travel, so the height of the lowest scan over town decides how low in a storm the radar can see.
| Radar | Distance | Lowest beam over Mammoth | View |
|---|---|---|---|
| KTFX Great Falls, MT | 127 mi north-northeast | 14,000 ft | Limited — the beam overshoots the lowest part of storms |
| KMSX Missoula, MT | 133 mi northwest | 15,000 ft | Limited — the beam overshoots the lowest part of storms |
| KBLX Billings, MT | 165 mi east | 21,200 ft | Limited — the beam overshoots the lowest part of storms |
Beam height is the center of the 0.5° scan above the radar, with standard refraction. Mountains near a radar can block it further.
Tornado & hail history near Mammoth
Since 1950, NOAA has recorded 1 tornado within 25 miles of Mammoth. The strongest was an F0 on June 29, 1992, which touched down about 18 miles southeast of town.
Hail: 30 reports of 1-inch or larger hail within 25 miles since 1955, 1 of them 2 inches or more; the largest was 2.00-inch hail on June 21, 1976.
Source: NOAA Storm Prediction Center — tornadoes 1950–2025, hail 1955–2025. Distances are to each tornado's track; ratings before February 2007 use the original Fujita scale.
On TALON you get Mammoth's live radar loop, rain/snow/ice colors, flash-flood risk, storm tracks with arrival times and NWS warnings free; close-up radar and rotation detection are part of TALON Pro.
Mammoth radar FAQ
Where is the nearest weather radar to Mammoth, MT?
KTFX (Great Falls, MT), about 127 miles north-northeast. KMSX (Missoula, MT) is 133 miles away and also covers the area.
Does radar show snow in Mammoth?
Yes. TALON colors snow blue, a rain–snow mix pink and freezing rain purple using NOAA's precipitation-type analysis. Over Mammoth the lowest scan from KTFX is about 14,000 ft up, so light snow from shallow clouds can be under-shown — check NWS winter alerts too.
Is TALON's radar for Mammoth free?
Yes — the US radar loop, rain/snow/ice colors, flash-flood risk, storm tracks and NWS warnings are free in any browser. Close-up radar, rotation detection and longer forecasts are part of TALON Pro.
Should I rely on radar for my safety?
No app replaces official warnings. When the National Weather Service issues a warning for Mammoth, follow it right away — see watch vs. warning.
Radar for nearby towns
- Whitehall, MT radar 14 mi
- Ennis, MT radar 26 mi
- Three Forks, MT radar 27 mi
- Butte-Silver Bow (balance), MT radar 35 mi
- Manhattan, MT radar 36 mi
- Boulder, MT radar 39 mi
- Belgrade, MT radar 41 mi
- Dillon, MT radar 43 mi
- Bozeman, MT radar 47 mi
- Townsend, MT radar 51 mi