Williamson, IA Live Doppler Radar
Live radar for Williamson, Lucas County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.
What weather hits Williamson?
Since 1996, the National Weather Service has logged river or areal flooding on 83 days in the Lucas forecast zone and Lucas County — the most common reported hazard around Williamson, mostly in May and June. Next come heavy snow & winter storms (48 days) and damaging thunderstorm winds (47 days).
| Hazard | Days reported | Most recent | Worst on record |
|---|---|---|---|
| Flooding | 83 | May 2019 | Jun 12, 2010 · $20 million damage |
| Heavy snow & winter storms | 48 | Feb 2025 | Oct 26, 1997 · $3.2 million damage |
| Damaging thunderstorm winds | 47 | Oct 2024 | Jul 28, 2015 · $550,000 damage |
| High winds | 22 | Mar 2025 | Nov 10, 1998 · $305,000 damage |
| Extreme cold & wind chill | 15 | Jan 2025 | Sep 21, 1999 · $294,000 damage |
| Ice storms & sleet | 15 | Jan 2017 | Dec 10, 2007 · $150,000 damage |
| Flash flooding | 12 | Jun 2021 | Jul 20, 2010 · $1.1 million damage |
| Blizzards | 11 | Mar 2025 | Dec 20, 2012 · $100,000 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 Lucas forecast zone and Lucas County; damage is as reported, not adjusted for inflation.
How much snow does Williamson get?
A normal year brings about 24 inches of snow to Williamson, based on NOAA's 1991–2020 climate normals for the Chariton 1 E weather station 5.1 miles away. The snowiest month is usually January (7.9 in).
| Oct | Nov | Dec | Jan | Feb | Mar | Apr | May |
|---|---|---|---|---|---|---|---|
| 0.3 | 2.0 | 3.1 | 7.9 | 6.5 | 3.5 | 0.8 | 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 Williamson?
The closest NEXRAD Doppler radar is KDMX (Des Moines, IA), about 51 miles north-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 Williamson | View |
|---|---|---|---|
| KDMX Des Moines, IA | 51 mi north-northwest | 3,600 ft | Good — most storms and steady rain or snow show clearly |
| KDVN Quad Cities, IA | 143 mi east-northeast | 16,900 ft | Limited — the beam overshoots the lowest part of storms |
| KOAX Omaha, NE | 162 mi west | 20,700 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 Williamson
Since 1950, NOAA has recorded 96 tornadoes within 25 miles of Williamson, 26 of them EF2/F2 or stronger. Most came in May and June. The strongest was an F4 on June 7, 1984, which passed about 14 miles southeast of town and caused 3 deaths. The most recent was an EF0 on May 7, 2024, which passed about 22 miles north-northwest of town.
Hail: 323 reports of 1-inch or larger hail within 25 miles since 1955, 39 of them 2 inches or more; the largest was 4.00-inch hail on June 20, 2015.
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 Williamson'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.
Williamson radar FAQ
Where is the nearest weather radar to Williamson, IA?
KDMX (Des Moines, IA), about 51 miles north-northwest. KDVN (Quad Cities, IA) is 143 miles away and also covers the area.
Does radar show snow in Williamson?
Yes. TALON colors snow blue, a rain–snow mix pink and freezing rain purple using NOAA's precipitation-type analysis. Over Williamson the lowest scan from KDMX is about 3,600 ft up.
Is TALON's radar for Williamson 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 Williamson, follow it right away — see watch vs. warning.
Radar for nearby towns
- Chariton, IA radar 6 mi
- Melcher-Dallas, IA radar 10 mi
- Knoxville, IA radar 18 mi
- Pleasantville, IA radar 21 mi
- Corydon, IA radar 23 mi
- Albia, IA radar 24 mi
- Indianola, IA radar 25 mi
- Osceola, IA radar 28 mi
- Pella, IA radar 28 mi
- Monroe, IA radar 31 mi