Grand Marsh, WI Live Doppler Radar
Live radar for Grand Marsh, Adams County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.
What weather hits Grand Marsh?
Since 1996, the National Weather Service has logged damaging thunderstorm winds on 80 days in the Adams forecast zone and Adams County — the most common reported hazard around Grand Marsh, mostly in June and July. Next come heavy snow & winter storms (70 days) and extreme cold & wind chill (20 days).
| Hazard | Days reported | Most recent | Worst on record |
|---|---|---|---|
| Damaging thunderstorm winds | 80 | Jun 2026 | Aug 28, 2018 · $6.0 million damage |
| Heavy snow & winter storms | 70 | Mar 2026 | — |
| Extreme cold & wind chill | 20 | Jan 2026 | Dec 24, 2020 · 1 death |
| Flooding | 14 | Jul 2024 | Mar 14, 2019 · $750,000 damage |
| Excessive heat | 11 | Jun 2026 | — |
| Flash flooding | 7 | Aug 2024 | Aug 28, 2018 · $805,000 damage |
| High winds | 5 | Dec 2021 | Nov 10, 1998 · $100,000 damage |
| Lightning casualties & damage | 5 | Jun 2019 | Jul 13, 2015 · $20,000 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 Adams forecast zone and Adams County; damage is as reported, not adjusted for inflation.
How much snow does Grand Marsh get?
A normal year brings about 52 inches of snow to Grand Marsh, based on NOAA's 1991–2020 climate normals for the Friendship weather station 8.7 miles away. The snowiest month is usually December (14.8 in).
| Oct | Nov | Dec | Jan | Feb | Mar | Apr | May |
|---|---|---|---|---|---|---|---|
| 0.2 | 2.2 | 14.8 | 11.9 | 13.9 | 6.5 | 2.5 | 0.0 |
Normal snowfall in inches. TALON Pro compares this season's snow at your location with these normals as winter goes on.
Which radars cover Grand Marsh?
The closest NEXRAD Doppler radar is KARX (La Crosse, WI), about 74 miles west. 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 Grand Marsh | View |
|---|---|---|---|
| KARX La Crosse, WI | 74 mi west | 6,200 ft | Fair — the beam can pass over shallow snow and low-level rotation |
| KMKX Milwaukee/Sullivan, WI | 86 mi southeast | 7,700 ft | Fair — the beam can pass over shallow snow and low-level rotation |
| KGRB Green Bay, WI | 90 mi east-northeast | 8,200 ft | Fair — the beam can pass over shallow snow and low-level rotation |
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 Grand Marsh
Since 1950, NOAA has recorded 89 tornadoes within 25 miles of Grand Marsh, 16 of them EF2/F2 or stronger. Most came in June and August. The strongest was an F4 on April 19, 1957, which passed about 23 miles west-northwest of town and caused 1 death. The most recent was an EF0 on July 16, 2025, which touched down about 17 miles west-southwest of town.
Hail: 196 reports of 1-inch or larger hail within 25 miles since 1955, 10 of them 2 inches or more; the largest was 4.25-inch hail on May 22, 2011.
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 Grand Marsh'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.
Grand Marsh radar FAQ
Where is the nearest weather radar to Grand Marsh, WI?
KARX (La Crosse, WI), about 74 miles west. KMKX (Milwaukee/Sullivan, WI) is 86 miles away and also covers the area.
Does radar show snow in Grand Marsh?
Yes. TALON colors snow blue, a rain–snow mix pink and freezing rain purple using NOAA's precipitation-type analysis. Over Grand Marsh the lowest scan from KARX is about 6,200 ft up, so light snow from shallow clouds can be under-shown — check NWS winter alerts too.
Is TALON's radar for Grand Marsh 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 Grand Marsh, follow it right away — see watch vs. warning.
Radar for nearby towns
- Adams, WI radar 7 mi
- Westfield, WI radar 11 mi
- Wisconsin Dells, WI radar 17 mi
- Mauston, WI radar 19 mi
- Montello, WI radar 20 mi
- Lake Delton, WI radar 21 mi
- New Lisbon, WI radar 23 mi
- Wautoma, WI radar 24 mi
- Portage, WI radar 26 mi
- Reedsburg, WI radar 28 mi