Green Castle, MO Live Doppler Radar
Live radar for Green Castle, Sullivan County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.
What weather hits Green Castle?
Since 1996, the National Weather Service has logged damaging thunderstorm winds on 42 days in the Sullivan forecast zone and Sullivan County — the most common reported hazard around Green Castle, mostly in June and July. Next come heavy snow & winter storms (33 days) and excessive heat (14 days).
| Hazard | Days reported | Most recent | Worst on record |
|---|---|---|---|
| Damaging thunderstorm winds | 42 | May 2026 | Oct 29, 2004 · $40,000 damage |
| Heavy snow & winter storms | 33 | Jan 2026 | Apr 10, 1997 · $750,000 damage |
| Excessive heat | 14 | Aug 2023 | — |
| Extreme cold & wind chill | 11 | Feb 2025 | — |
| Flash flooding | 8 | May 2009 | Aug 27, 2004 · $100,000 damage |
| Ice storms & sleet | 7 | Feb 2019 | Dec 10, 2007 · $10,000 damage |
| Blizzards | 3 | Nov 2018 | — |
| Flooding | 3 | Jun 2020 | — |
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 Sullivan forecast zone and Sullivan County; damage is as reported, not adjusted for inflation.
How much snow does Green Castle get?
A normal year brings about 17 inches of snow to Green Castle, based on NOAA's 1991–2020 climate normals for the Milan weather station 12.6 miles away. The snowiest month is usually January (5.3 in).
| Oct | Nov | Dec | Jan | Feb | Mar | Apr | May |
|---|---|---|---|---|---|---|---|
| 0.1 | 0.7 | 3.9 | 5.3 | 4.6 | 2.0 | 0.4 | 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 Green Castle?
The closest NEXRAD Doppler radar is KDMX (Des Moines, IA), about 111 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 Green Castle | View |
|---|---|---|---|
| KDMX Des Moines, IA | 111 mi north-northwest | 11,300 ft | Limited — the beam overshoots the lowest part of storms |
| KEAX Kansas City, MO | 124 mi southwest | 13,500 ft | Limited — the beam overshoots the lowest part of storms |
| KDVN Quad Cities, IA | 152 mi northeast | 18,600 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 Green Castle
Since 1950, NOAA has recorded 43 tornadoes within 25 miles of Green Castle, 8 of them EF2/F2 or stronger. Most came in May and June. The strongest was an F4 on January 24, 1967, which passed about 21 miles east-northeast of town. The most recent was an EF0 on August 11, 2023, which touched down about 16 miles south-southwest of town.
Hail: 158 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 July 27, 2008.
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 Green Castle'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.
Green Castle radar FAQ
Where is the nearest weather radar to Green Castle, MO?
KDMX (Des Moines, IA), about 111 miles north-northwest. KEAX (Kansas City, MO) is 124 miles away and also covers the area.
Does radar show snow in Green Castle?
Yes. TALON colors snow blue, a rain–snow mix pink and freezing rain purple using NOAA's precipitation-type analysis. Over Green Castle the lowest scan from KDMX is about 11,300 ft up, so light snow from shallow clouds can be under-shown — check NWS winter alerts too.
Is TALON's radar for Green Castle 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 Green Castle, follow it right away — see watch vs. warning.
Radar for nearby towns
- Milan, MO radar 14 mi
- Kirksville, MO radar 16 mi
- Unionville, MO radar 16 mi
- La Plata, MO radar 26 mi
- Brookfield, MO radar 34 mi
- Marceline, MO radar 38 mi
- Edina, MO radar 38 mi
- Memphis, MO radar 40 mi
- Trenton, MO radar 40 mi
- Macon, MO radar 42 mi