Fontana-on-Geneva Lake, WI Live Doppler Radar
Live radar for Fontana-on-Geneva Lake, Walworth County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.
What weather hits Fontana-on-Geneva Lake?
Since 1996, the National Weather Service has logged damaging thunderstorm winds on 139 days in the Walworth forecast zone and Walworth County — the most common reported hazard around Fontana-on-Geneva Lake, mostly in June and July. Next come heavy snow & winter storms (57 days) and excessive heat (45 days).
| Hazard | Days reported | Most recent | Worst on record |
|---|---|---|---|
| Damaging thunderstorm winds | 139 | Jun 2026 | Jul 21, 1998 · $2.0 million damage |
| Heavy snow & winter storms | 57 | Nov 2025 | Jan 12, 2024 · $20,000 damage |
| Excessive heat | 45 | Jun 2026 | Jul 3, 2012 · 1 death |
| Extreme cold & wind chill | 35 | Jan 2026 | Jan 9, 1996 · 1 death |
| Flooding | 17 | Jun 2026 | Jun 17, 1996 · $24 million damage |
| Flash flooding | 16 | Apr 2026 | Jul 12, 2017 · $10 million damage |
| Lightning casualties & damage | 15 | May 2008 | Apr 25, 2008 · $100,000 damage |
| High winds | 13 | Apr 2026 | Nov 10, 1998 · $800,000 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 Walworth forecast zone and Walworth County; damage is as reported, not adjusted for inflation.
How much snow does Fontana-on-Geneva Lake get?
A normal year brings about 40 inches of snow to Fontana-on-Geneva Lake, based on NOAA's 1991–2020 climate normals for the Lake Geneva Wwtp weather station 8.3 miles away. The snowiest month is usually January (13.9 in).
| Oct | Nov | Dec | Jan | Feb | Mar | Apr | May |
|---|---|---|---|---|---|---|---|
| 0.2 | 3.4 | 7.1 | 13.9 | 8.1 | 4.8 | 2.6 | 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 Fontana-on-Geneva Lake?
The closest NEXRAD Doppler radar is KMKX (Milwaukee/Sullivan, WI), about 29 miles north. 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 Fontana-on-Geneva Lake | View |
|---|---|---|---|
| KMKX Milwaukee/Sullivan, WI | 29 mi north | 1,800 ft | Excellent — the lowest scan sees close to the ground |
| KLOT Chicago, IL | 70 mi south-southeast | 5,600 ft | Good — most storms and steady rain or snow show clearly |
| KDVN Quad Cities, IA | 122 mi west-southwest | 13,000 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 Fontana-on-Geneva Lake
Since 1950, NOAA has recorded 113 tornadoes within 25 miles of Fontana-on-Geneva Lake, 20 of them EF2/F2 or stronger. Most came in June and July. The strongest was an F4 on April 21, 1967, which passed about 15 miles south-southeast of town and caused 24 deaths. The most recent was an EF2 on June 22, 2024, which passed about 23 miles west-northwest of town.
Hail: 326 reports of 1-inch or larger hail within 25 miles since 1955, 21 of them 2 inches or more; the largest was 2.90-inch hail on May 2, 2018.
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 Fontana-on-Geneva Lake'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.
Fontana-on-Geneva Lake radar FAQ
Where is the nearest weather radar to Fontana-on-Geneva Lake, WI?
KMKX (Milwaukee/Sullivan, WI), about 29 miles north. KLOT (Chicago, IL) is 70 miles away and also covers the area.
Does radar show snow in Fontana-on-Geneva Lake?
Yes. TALON colors snow blue, a rain–snow mix pink and freezing rain purple using NOAA's precipitation-type analysis. Over Fontana-on-Geneva Lake the lowest scan from KMKX is about 1,800 ft up.
Is TALON's radar for Fontana-on-Geneva Lake 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 Fontana-on-Geneva Lake, follow it right away — see watch vs. warning.
Radar for nearby towns
- Walworth, WI radar 2 mi
- Williams Bay, WI radar 3 mi
- Delavan, WI radar 7 mi
- Lake Geneva, WI radar 8 mi
- Darien, WI radar 8 mi
- Sharon, WI radar 9 mi
- Elkhorn, WI radar 9 mi
- Bloomfield, WI radar 11 mi
- Genoa City, WI radar 13 mi
- Clinton, WI radar 15 mi