Canton, MO Live Doppler Radar
Live radar for Canton, Lewis County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.
What weather hits Canton?
Since 1996, the National Weather Service has logged damaging thunderstorm winds on 64 days in the Lewis forecast zone and Lewis County — the most common reported hazard around Canton, mostly in June and July. Next come heavy snow & winter storms (41 days) and excessive heat (40 days).
| Hazard | Days reported | Most recent | Worst on record |
|---|---|---|---|
| Damaging thunderstorm winds | 64 | Apr 2026 | Jul 12, 2015 · 1 death |
| Heavy snow & winter storms | 41 | Nov 2025 | — |
| Excessive heat | 40 | Aug 2023 | — |
| Flash flooding | 27 | Aug 2023 | Jul 11, 2015 · 1 death |
| Flooding | 15 | May 2013 | May 15, 2010 · 1 death |
| High winds | 7 | Mar 2025 | — |
| Extreme cold & wind chill | 7 | Jan 2025 | — |
| Ice storms & sleet | 6 | Dec 2008 | — |
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 Lewis forecast zone and Lewis County; damage is as reported, not adjusted for inflation.
Which radars cover Canton?
The closest NEXRAD Doppler radar is KLSX (St. Louis, MO), about 109 miles south-southeast. 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 Canton | View |
|---|---|---|---|
| KLSX St. Louis, MO | 109 mi south-southeast | 10,900 ft | Limited — the beam overshoots the lowest part of storms |
| KDVN Quad Cities, IA | 114 mi north-northeast | 11,700 ft | Limited — the beam overshoots the lowest part of storms |
| KILX Lincoln, IL | 116 mi east | 12,000 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 Canton
Since 1950, NOAA has recorded 67 tornadoes within 25 miles of Canton, 16 of them EF2/F2 or stronger. Most came in April and June. The strongest was an F3 on May 1, 1973, which passed about 23 miles north-northwest of town and caused 2 deaths. The most recent was a tornado of unknown strength on August 10, 2025, which touched down about 23 miles north-northwest of town.
Hail: 268 reports of 1-inch or larger hail within 25 miles since 1955, 23 of them 2 inches or more; the largest was 4.50-inch hail on April 14, 2002.
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 Canton'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.
Canton radar FAQ
Where is the nearest weather radar to Canton, MO?
KLSX (St. Louis, MO), about 109 miles south-southeast. KDVN (Quad Cities, IA) is 114 miles away and also covers the area.
Does radar show snow in Canton?
Yes. TALON colors snow blue, a rain–snow mix pink and freezing rain purple using NOAA's precipitation-type analysis. Over Canton the lowest scan from KLSX is about 10,900 ft up, so light snow from shallow clouds can be under-shown — check NWS winter alerts too.
Is TALON's radar for Canton 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 Canton, follow it right away — see watch vs. warning.
Radar for nearby towns
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