Harrison, MT Live Doppler Radar
Live radar for Harrison, Madison County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.
What weather hits Harrison?
Since 1996, the National Weather Service has logged damaging thunderstorm winds on 30 days in the Missouri Headwaters forecast zone and Madison County — the most common reported hazard around Harrison, mostly in August and July. Next come heavy snow & winter storms (9 days) and flooding (9 days).
| Hazard | Days reported | Most recent | Worst on record |
|---|---|---|---|
| Damaging thunderstorm winds | 30 | May 2026 | Jul 1, 2023 · $20,000 damage |
| Heavy snow & winter storms | 9 | Mar 2026 | — |
| Flooding | 9 | Jun 2020 | — |
| High winds | 7 | Mar 2026 | — |
| Extreme cold & wind chill | 4 | Feb 2025 | — |
| Wildfires | 1 | Mar 2026 | — |
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 Missouri Headwaters forecast zone and Madison County; damage is as reported, not adjusted for inflation.
Which radars cover Harrison?
The closest NEXRAD Doppler radar is KTFX (Great Falls, MT), about 123 miles north. 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 Harrison | View |
|---|---|---|---|
| KTFX Great Falls, MT | 123 mi north | 13,200 ft | Limited — the beam overshoots the lowest part of storms |
| KMSX Missoula, MT | 140 mi northwest | 16,200 ft | Limited — the beam overshoots the lowest part of storms |
| KBLX Billings, MT | 153 mi east | 18,900 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 Harrison
Since 1950, NOAA has recorded 2 tornadoes within 25 miles of Harrison. The strongest was an F0 on May 17, 1994, which touched down about 21 miles northeast of town.
Hail: 23 reports of 1-inch or larger hail within 25 miles since 1955, 2 of them 2 inches or more; the largest was 2.25-inch hail on June 21, 1988.
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 Harrison'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.
Harrison radar FAQ
Where is the nearest weather radar to Harrison, MT?
KTFX (Great Falls, MT), about 123 miles north. KMSX (Missoula, MT) is 140 miles away and also covers the area.
Does radar show snow in Harrison?
Yes. TALON colors snow blue, a rain–snow mix pink and freezing rain purple using NOAA's precipitation-type analysis. Over Harrison the lowest scan from KTFX is about 13,200 ft up, so light snow from shallow clouds can be under-shown — check NWS winter alerts too.
Is TALON's radar for Harrison 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 Harrison, follow it right away — see watch vs. warning.
Radar for nearby towns
- Three Forks, MT radar 17 mi
- Whitehall, MT radar 19 mi
- Manhattan, MT radar 24 mi
- Ennis, MT radar 25 mi
- Belgrade, MT radar 30 mi
- Bozeman, MT radar 35 mi
- Boulder, MT radar 40 mi
- Butte-Silver Bow (balance), MT radar 44 mi
- Townsend, MT radar 44 mi
- Dillon, MT radar 53 mi