Green Mountain, IA Live Doppler Radar
Live radar for Green Mountain, Marshall County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.
What weather hits Green Mountain?
Since 1996, the National Weather Service has logged damaging thunderstorm winds on 87 days in the Marshall forecast zone and Marshall County — the most common reported hazard around Green Mountain, mostly in June and May. Next come flooding (60 days) and high winds (47 days).
| Hazard | Days reported | Most recent | Worst on record |
|---|---|---|---|
| Damaging thunderstorm winds | 87 | Jul 2025 | Jul 11, 2011 · $550,000 damage |
| Flooding | 60 | May 2024 | Jun 1, 2008 · $250 million damage |
| High winds | 47 | Apr 2025 | Nov 10, 1998 · $305,000 damage |
| Heavy snow & winter storms | 46 | Feb 2026 | Oct 26, 1997 · $3.2 million damage |
| Extreme cold & wind chill | 20 | Jan 2025 | Sep 21, 1999 · $294,000 damage |
| Blizzards | 16 | Mar 2025 | Dec 20, 2012 · $100,000 damage |
| Flash flooding | 15 | Apr 2022 | Jun 22, 2007 · $400,000 damage |
| Ice storms & sleet | 13 | Feb 2023 | Jan 20, 2010 · $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 Marshall forecast zone and Marshall County; damage is as reported, not adjusted for inflation.
How much snow does Green Mountain get?
A normal year brings about 25 inches of snow to Green Mountain, based on NOAA's 1991–2020 climate normals for the Marshalltown weather station 6 miles away. The snowiest month is usually December (7.8 in).
| Oct | Nov | Dec | Jan | Feb | Mar | Apr | May |
|---|---|---|---|---|---|---|---|
| 0.2 | 1.7 | 7.8 | 6.3 | 5.3 | 3.3 | 0.7 | 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 Mountain?
The closest NEXRAD Doppler radar is KDMX (Des Moines, IA), about 53 miles west-southwest. 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 Mountain | View |
|---|---|---|---|
| KDMX Des Moines, IA | 53 mi west-southwest | 3,900 ft | Good — most storms and steady rain or snow show clearly |
| KDVN Quad Cities, IA | 120 mi east-southeast | 12,700 ft | Limited — the beam overshoots the lowest part of storms |
| KARX La Crosse, WI | 145 mi northeast | 17,100 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 Mountain
Since 1950, NOAA has recorded 132 tornadoes within 25 miles of Green Mountain, 31 of them EF2/F2 or stronger. Most came in June and May. The strongest was an F4 on May 30, 1989, which passed about 14 miles north-northwest of town. The most recent was a tornado of unknown strength on August 18, 2025, which passed about 21 miles north of town.
Hail: 253 reports of 1-inch or larger hail within 25 miles since 1955, 31 of them 2 inches or more; the largest was 3.75-inch hail on August 16, 1987.
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 Mountain'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 Mountain radar FAQ
Where is the nearest weather radar to Green Mountain, IA?
KDMX (Des Moines, IA), about 53 miles west-southwest. KDVN (Quad Cities, IA) is 120 miles away and also covers the area.
Does radar show snow in Green Mountain?
Yes. TALON colors snow blue, a rain–snow mix pink and freezing rain purple using NOAA's precipitation-type analysis. Over Green Mountain the lowest scan from KDMX is about 3,900 ft up.
Is TALON's radar for Green Mountain 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 Mountain, follow it right away — see watch vs. warning.
Radar for nearby towns
- Marshalltown, IA radar 6 mi
- Conrad, IA radar 9 mi
- Toledo, IA radar 15 mi
- Tama, IA radar 16 mi
- Grundy Center, IA radar 18 mi
- State Center, IA radar 19 mi
- Reinbeck, IA radar 19 mi
- Traer, IA radar 19 mi
- Eldora, IA radar 23 mi
- Grinnell, IA radar 26 mi