Sedan, MT Live Doppler Radar
Live radar for Sedan, Gallatin County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.
What weather hits Sedan?
Since 1996, the National Weather Service has logged damaging thunderstorm winds on 50 days in the Big Belt, Bridger and Castle Mountains forecast zone and Gallatin County — the most common reported hazard around Sedan, mostly in July and August. Next come high winds (18 days) and heavy snow & winter storms (18 days).
| Hazard | Days reported | Most recent | Worst on record |
|---|---|---|---|
| Damaging thunderstorm winds | 50 | Nov 2025 | Jul 3, 2000 · $25,000 damage |
| High winds | 18 | Apr 2026 | — |
| Heavy snow & winter storms | 18 | Mar 2026 | — |
| Flooding | 10 | Apr 2023 | Apr 10, 2023 · $1.0 million damage |
| Wildfires | 6 | Aug 2024 | Sep 1, 2000 · $160,000 damage |
| Extreme cold & wind chill | 5 | Feb 2025 | — |
| Flash flooding | 2 | Aug 2021 | — |
| Lightning casualties & damage | 1 | Jun 1999 | Jun 17, 1999 · 1 death |
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 Big Belt, Bridger and Castle Mountains forecast zone and Gallatin County; damage is as reported, not adjusted for inflation.
How much snow does Sedan get?
A normal year brings about 21 inches of snow to Sedan, based on NOAA's 1991–2020 climate normals for the Menard 3 Ne weather station 12.4 miles away. The snowiest month is usually December (5.7 in).
| Oct | Nov | Dec | Jan | Feb | Mar | Apr | May |
|---|---|---|---|---|---|---|---|
| 0.2 | 3.3 | 5.7 | 4.6 | 2.8 | 2.7 | 1.1 | 0.7 |
Normal snowfall in inches. TALON Pro compares this season's snow at your location with these normals as winter goes on.
Which radars cover Sedan?
The closest NEXRAD Doppler radar is KTFX (Great Falls, MT), about 106 miles north-northwest. 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 Sedan | View |
|---|---|---|---|
| KTFX Great Falls, MT | 106 mi north-northwest | 10,500 ft | Limited — the beam overshoots the lowest part of storms |
| KBLX Billings, MT | 110 mi east | 11,000 ft | Limited — the beam overshoots the lowest part of storms |
| KMSX Missoula, MT | 165 mi west-northwest | 21,300 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 Sedan
Since 1950, NOAA has recorded 4 tornadoes within 25 miles of Sedan. Most came in July and June. The strongest was an F1 on June 15, 1960, which touched down about 20 miles south-southwest of town. The most recent was an EF0 on August 9, 2011, which touched down about 9 miles east-northeast of town.
Hail: 58 reports of 1-inch or larger hail within 25 miles since 1955, 2 of them 2 inches or more; the largest was 2.75-inch hail on June 30, 2010.
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 Sedan'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.
Sedan radar FAQ
Where is the nearest weather radar to Sedan, MT?
KTFX (Great Falls, MT), about 106 miles north-northwest. KBLX (Billings, MT) is 110 miles away and also covers the area.
Does radar show snow in Sedan?
Yes. TALON colors snow blue, a rain–snow mix pink and freezing rain purple using NOAA's precipitation-type analysis. Over Sedan the lowest scan from KTFX is about 10,500 ft up, so light snow from shallow clouds can be under-shown — check NWS winter alerts too.
Is TALON's radar for Sedan 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 Sedan, follow it right away — see watch vs. warning.
Radar for nearby towns
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