Altamont, SD Live Doppler Radar
Live radar for Altamont, Deuel County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.
What weather hits Altamont?
Since 1996, the National Weather Service has logged heavy snow or a winter storm on 65 days in the Deuel forecast zone and Deuel County — the most common reported hazard around Altamont, mostly in December and March. Next come damaging thunderstorm winds (58 days) and blizzards (54 days).
| Hazard | Days reported | Most recent | Worst on record |
|---|---|---|---|
| Heavy snow & winter storms | 65 | Mar 2026 | — |
| Damaging thunderstorm winds | 58 | Jun 2026 | Jun 21, 2013 · $193,000 damage |
| Blizzards | 54 | Feb 2023 | Mar 24, 1996 · $5,000 damage |
| High winds | 45 | Mar 2026 | Feb 10, 1996 · $10,000 damage |
| Extreme cold & wind chill | 44 | Jan 2026 | — |
| Flooding | 10 | Aug 2025 | Jun 1, 2019 · $11 million damage |
| Flash flooding | 9 | Jun 2026 | Mar 22, 2009 · $200,000 damage |
| Ice storms & sleet | 8 | Mar 2023 | Dec 25, 2016 · $2.5 million damage |
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 Deuel forecast zone and Deuel County; damage is as reported, not adjusted for inflation.
How much snow does Altamont get?
A normal year brings about 61 inches of snow to Altamont, based on NOAA's 1991–2020 climate normals for the Clear Lake weather station 5.8 miles away. The snowiest month is usually December (13.6 in).
| Oct | Nov | Dec | Jan | Feb | Mar | Apr | May |
|---|---|---|---|---|---|---|---|
| 1.4 | 7.8 | 13.6 | 10.8 | 10.3 | 9.6 | 7.0 | 0.2 |
Normal snowfall in inches. TALON Pro compares this season's snow at your location with these normals as winter goes on.
Which radars cover Altamont?
The closest NEXRAD Doppler radar is KFSD (Sioux Falls, SD), about 87 miles south. 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 Altamont | View |
|---|---|---|---|
| KFSD Sioux Falls, SD | 87 mi south | 7,700 ft | Fair — the beam can pass over shallow snow and low-level rotation |
| KABR Aberdeen, SD | 94 mi west-northwest | 8,800 ft | Fair — the beam can pass over shallow snow and low-level rotation |
| KMPX Minneapolis, MN | 153 mi east | 18,800 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 Altamont
Since 1950, NOAA has recorded 87 tornadoes within 25 miles of Altamont, 17 of them EF2/F2 or stronger. Most came in May and June. The strongest was an F4 on June 7, 1993, which passed about 24 miles south-southeast of town. The most recent was an EF2 on June 28, 2025, which passed about 2 miles west of town.
Hail: 256 reports of 1-inch or larger hail within 25 miles since 1955, 28 of them 2 inches or more; the largest was 3.00-inch hail on July 11, 2017.
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 Altamont'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.
Altamont radar FAQ
Where is the nearest weather radar to Altamont, SD?
KFSD (Sioux Falls, SD), about 87 miles south. KABR (Aberdeen, SD) is 94 miles away and also covers the area.
Does radar show snow in Altamont?
Yes. TALON colors snow blue, a rain–snow mix pink and freezing rain purple using NOAA's precipitation-type analysis. Over Altamont the lowest scan from KFSD is about 7,700 ft up, so light snow from shallow clouds can be under-shown — check NWS winter alerts too.
Is TALON's radar for Altamont 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 Altamont, follow it right away — see watch vs. warning.
Radar for nearby towns
- Clear Lake, SD radar 6 mi
- Watertown, SD radar 23 mi
- Milbank, SD radar 26 mi
- Brookings, SD radar 37 mi
- Volga, SD radar 38 mi
- Aurora, SD radar 39 mi
- Clark, SD radar 51 mi
- De Smet, SD radar 53 mi
- Webster, SD radar 53 mi
- Flandreau, SD radar 55 mi