Dennison, MN Live Doppler Radar
Live radar for Dennison, Goodhue County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.
What weather hits Dennison?
Since 1996, the National Weather Service has logged heavy snow or a winter storm on 93 days in the Goodhue forecast zone and Goodhue County — the most common reported hazard around Dennison, mostly in March and January. Next come damaging thunderstorm winds (77 days) and extreme cold & wind chill (19 days).
| Hazard | Days reported | Most recent | Worst on record |
|---|---|---|---|
| Heavy snow & winter storms | 93 | Dec 2025 | Dec 9, 2012 · 1 death |
| Damaging thunderstorm winds | 77 | Jul 2025 | Jun 10, 2016 · 1 death |
| Extreme cold & wind chill | 19 | Jan 2026 | — |
| Flash flooding | 16 | Jul 2019 | Jun 26, 1998 · 2 deaths · $1.5 million damage |
| High winds | 11 | Dec 2021 | — |
| Blizzards | 10 | Mar 2026 | — |
| Excessive heat | 10 | Aug 2023 | — |
| Flooding | 9 | Sep 2016 | Jun 7, 2005 · $545,000 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 Goodhue forecast zone and Goodhue County; damage is as reported, not adjusted for inflation.
How much snow does Dennison get?
A normal year brings about 43 inches of snow to Dennison, based on NOAA's 1991–2020 climate normals for the Faribault weather station 13.5 miles away. The snowiest month is usually February (10.6 in).
| Oct | Nov | Dec | Jan | Feb | Mar | Apr | May |
|---|---|---|---|---|---|---|---|
| 0.1 | 4.9 | 10.1 | 9.4 | 10.6 | 6.4 | 1.6 | 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 Dennison?
The closest NEXRAD Doppler radar is KMPX (Minneapolis, MN), about 40 miles 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 Dennison | View |
|---|---|---|---|
| KMPX Minneapolis, MN | 40 mi northwest | 2,700 ft | Excellent — the lowest scan sees close to the ground |
| KARX La Crosse, WI | 100 mi east-southeast | 9,600 ft | Fair — the beam can pass over shallow snow and low-level rotation |
| KDLH Duluth, MN | 172 mi north-northeast | 22,800 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 Dennison
Since 1950, NOAA has recorded 117 tornadoes within 25 miles of Dennison, 12 of them EF2/F2 or stronger. Most came in May and September. The strongest was an F4 on April 30, 1967, which passed about 23 miles south-southwest of town and caused 5 deaths. The most recent was a tornado of unknown strength on August 29, 2025, which touched down about 13 miles southeast of town.
Hail: 344 reports of 1-inch or larger hail within 25 miles since 1955, 45 of them 2 inches or more; the largest was 3.50-inch hail on July 13, 2024.
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 Dennison'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.
Dennison radar FAQ
Where is the nearest weather radar to Dennison, MN?
KMPX (Minneapolis, MN), about 40 miles northwest. KARX (La Crosse, WI) is 100 miles away and also covers the area.
Does radar show snow in Dennison?
Yes. TALON colors snow blue, a rain–snow mix pink and freezing rain purple using NOAA's precipitation-type analysis. Over Dennison the lowest scan from KMPX is about 2,700 ft up.
Is TALON's radar for Dennison 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 Dennison, follow it right away — see watch vs. warning.
Radar for nearby towns
- Northfield, MN radar 8 mi
- Dundas, MN radar 9 mi
- Kenyon, MN radar 10 mi
- Cannon Falls, MN radar 10 mi
- Wanamingo, MN radar 14 mi
- Faribault, MN radar 14 mi
- Elko New Market, MN radar 19 mi
- Farmington, MN radar 19 mi
- Empire, MN radar 19 mi
- Zumbrota, MN radar 19 mi