Forty Mile Colony, MT Live Doppler Radar
Live radar for Forty Mile Colony, Big Horn County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.
What weather hits Forty Mile Colony?
Since 1996, the National Weather Service has logged damaging thunderstorm winds on 86 days in the Southern Big Horn forecast zone and Big Horn County — the most common reported hazard around Forty Mile Colony, mostly in July and June. Next come heavy snow & winter storms (28 days) and high winds (18 days).
| Hazard | Days reported | Most recent | Worst on record |
|---|---|---|---|
| Damaging thunderstorm winds | 86 | Jun 2026 | Jul 16, 2008 · 2 deaths |
| Heavy snow & winter storms | 28 | Apr 2026 | — |
| High winds | 18 | Mar 2026 | — |
| Flooding | 11 | May 2019 | May 21, 2011 · $4.0 million damage |
| Flash flooding | 8 | Jun 2023 | May 24, 2011 · 1 death |
| Wildfires | 2 | Aug 2024 | — |
| Blizzards | 1 | Apr 2022 | — |
| Lightning casualties & damage | 1 | Jul 1999 | Jul 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 Southern Big Horn forecast zone and Big Horn County; damage is as reported, not adjusted for inflation.
Which radars cover Forty Mile Colony?
The closest NEXRAD Doppler radar is KBLX (Billings, MT), about 72 miles west-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 Forty Mile Colony | View |
|---|---|---|---|
| KBLX Billings, MT | 72 mi west-northwest | 5,900 ft | Good — most storms and steady rain or snow show clearly |
| KRIW Riverton, WY | 163 mi south-southwest | 20,800 ft | Limited — the beam overshoots the lowest part of storms |
| KGGW Glasgow, MT | 205 mi north | 30,400 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 Forty Mile Colony
Since 1950, NOAA has recorded 8 tornadoes within 25 miles of Forty Mile Colony. Most came in June and May. The strongest was an F1 on June 21, 1984, which touched down about 7 miles east-northeast of town. The most recent was an F0 on May 13, 1996, which touched down about 18 miles east of town.
Hail: 59 reports of 1-inch or larger hail within 25 miles since 1955, 7 of them 2 inches or more; the largest was 4.00-inch hail on July 25, 1962.
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 Forty Mile Colony'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.
Forty Mile Colony radar FAQ
Where is the nearest weather radar to Forty Mile Colony, MT?
KBLX (Billings, MT), about 72 miles west-northwest. KRIW (Riverton, WY) is 163 miles away and also covers the area.
Does radar show snow in Forty Mile Colony?
Yes. TALON colors snow blue, a rain–snow mix pink and freezing rain purple using NOAA's precipitation-type analysis. Over Forty Mile Colony the lowest scan from KBLX is about 5,900 ft up.
Is TALON's radar for Forty Mile Colony 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 Forty Mile Colony, follow it right away — see watch vs. warning.
Radar for nearby towns
- Hardin, MT radar 34 mi
- Colstrip, MT radar 55 mi