Marthasville, MO Live Doppler Radar
Live radar for Marthasville, Warren County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.
What weather hits Marthasville?
Since 1996, the National Weather Service has logged damaging thunderstorm winds on 70 days in the Warren forecast zone and Warren County — the most common reported hazard around Marthasville, mostly in July and June. Next come excessive heat (54 days) and heavy snow & winter storms (44 days).
| Hazard | Days reported | Most recent | Worst on record |
|---|---|---|---|
| Damaging thunderstorm winds | 70 | May 2026 | Aug 12, 2021 · $30,000 damage |
| Excessive heat | 54 | Aug 2025 | Jul 16, 2012 · 1 death |
| Heavy snow & winter storms | 44 | Jan 2025 | — |
| Flash flooding | 21 | Jul 2022 | Jul 26, 2022 · $25,000 damage |
| Flooding | 10 | May 2026 | May 8, 2007 · $5,000 damage |
| Ice storms & sleet | 5 | Feb 2008 | Jan 12, 2007 · $96,000 damage |
| High winds | 5 | Nov 2019 | — |
| Extreme cold & wind chill | 4 | Jan 2024 | — |
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 Warren forecast zone and Warren County; damage is as reported, not adjusted for inflation.
How much snow does Marthasville get?
A normal year brings about 7.9 inches of snow to Marthasville, based on NOAA's 1991–2020 climate normals for the Washington weather station 7.6 miles away. The snowiest month is usually December (2.7 in).
| Oct | Nov | Dec | Jan | Feb | Mar | Apr | May |
|---|---|---|---|---|---|---|---|
| 0.0 | 0.4 | 2.7 | 2.6 | 1.4 | 0.7 | 0.1 | 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 Marthasville?
The closest NEXRAD Doppler radar is KLSX (St. Louis, MO), about 21 miles east-northeast. 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 Marthasville | View |
|---|---|---|---|
| KLSX St. Louis, MO | 21 mi east-northeast | 1,200 ft | Excellent — the lowest scan sees close to the ground |
| KILX Lincoln, IL | 140 mi northeast | 16,200 ft | Limited — the beam overshoots the lowest part of storms |
| KSGF Springfield, MO | 160 mi southwest | 20,200 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 Marthasville
Since 1950, NOAA has recorded 91 tornadoes within 25 miles of Marthasville, 21 of them EF2/F2 or stronger. Most came in April and May. The strongest was an F4 on February 24, 1956, which passed about 15 miles south-southeast of town and caused 6 deaths. The most recent was an EF1 on June 4, 2025, which passed about 22 miles east of town.
Hail: 436 reports of 1-inch or larger hail within 25 miles since 1955, 54 of them 2 inches or more; the largest was 4.50-inch hail on April 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 Marthasville'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.
Marthasville radar FAQ
Where is the nearest weather radar to Marthasville, MO?
KLSX (St. Louis, MO), about 21 miles east-northeast. KILX (Lincoln, IL) is 140 miles away and also covers the area.
Does radar show snow in Marthasville?
Yes. TALON colors snow blue, a rain–snow mix pink and freezing rain purple using NOAA's precipitation-type analysis. Over Marthasville the lowest scan from KLSX is about 1,200 ft up.
Is TALON's radar for Marthasville 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 Marthasville, follow it right away — see watch vs. warning.
Radar for nearby towns
- Washington, MO radar 6 mi
- New Haven, MO radar 9 mi
- Warrenton, MO radar 14 mi
- Union, MO radar 14 mi
- Wright City, MO radar 14 mi
- Wentzville, MO radar 16 mi
- Lake St. Louis, MO radar 18 mi
- Pacific, MO radar 20 mi
- St. Clair, MO radar 20 mi
- Dardenne Prairie, MO radar 20 mi