Garrison, IA Live Doppler Radar
Live radar for Garrison, Benton County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.
What weather hits Garrison?
Since 1996, the National Weather Service has logged damaging thunderstorm winds on 114 days in the Benton forecast zone and Benton County — the most common reported hazard around Garrison, mostly in June and July. Next come heavy snow & winter storms (81 days) and flash flooding (20 days).
| Hazard | Days reported | Most recent | Worst on record |
|---|---|---|---|
| Damaging thunderstorm winds | 114 | Jun 2026 | Dec 15, 2021 · 1 death |
| Heavy snow & winter storms | 81 | Nov 2025 | Jan 5, 2005 · $10,000 damage |
| Flash flooding | 20 | Aug 2025 | Jun 18, 2010 · $250,000 damage |
| Extreme cold & wind chill | 18 | Jan 2019 | — |
| Flooding | 16 | Jun 2020 | Jun 1, 2008 · $10 million damage |
| High winds | 13 | Feb 2016 | Apr 6, 1997 · $100,000 damage |
| Ice storms & sleet | 13 | Dec 2024 | Feb 24, 2007 · $2.1 million damage |
| Blizzards | 12 | Mar 2026 | Jan 22, 2005 · $5,000 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 Benton forecast zone and Benton County; damage is as reported, not adjusted for inflation.
How much snow does Garrison get?
A normal year brings about 34 inches of snow to Garrison, based on NOAA's 1991–2020 climate normals for the Vinton weather station 7.2 miles away. The snowiest month is usually December (8.8 in).
| Oct | Nov | Dec | Jan | Feb | Mar | Apr | May |
|---|---|---|---|---|---|---|---|
| 0.4 | 1.8 | 8.8 | 8.3 | 8.5 | 4.4 | 1.4 | 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 Garrison?
The closest NEXRAD Doppler radar is KDMX (Des Moines, IA), about 86 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 Garrison | View |
|---|---|---|---|
| KDMX Des Moines, IA | 86 mi west-southwest | 7,700 ft | Fair — the beam can pass over shallow snow and low-level rotation |
| KDVN Quad Cities, IA | 88 mi east-southeast | 8,000 ft | Fair — the beam can pass over shallow snow and low-level rotation |
| KARX La Crosse, WI | 126 mi north-northeast | 13,700 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 Garrison
Since 1950, NOAA has recorded 131 tornadoes within 25 miles of Garrison, 39 of them EF2/F2 or stronger. Most came in May and June. The strongest was an F4 on August 26, 1965, which passed about 8 miles north-northeast of town and caused 1 death. The most recent was an EF1 on July 11, 2025, which passed about 8 miles south-southwest of town.
Hail: 337 reports of 1-inch or larger hail within 25 miles since 1955, 29 of them 2 inches or more; the largest was 4.00-inch hail on May 11, 1970.
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 Garrison'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.
Garrison radar FAQ
Where is the nearest weather radar to Garrison, IA?
KDMX (Des Moines, IA), about 86 miles west-southwest. KDVN (Quad Cities, IA) is 88 miles away and also covers the area.
Does radar show snow in Garrison?
Yes. TALON colors snow blue, a rain–snow mix pink and freezing rain purple using NOAA's precipitation-type analysis. Over Garrison the lowest scan from KDMX is about 7,700 ft up, so light snow from shallow clouds can be under-shown — check NWS winter alerts too.
Is TALON's radar for Garrison 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 Garrison, follow it right away — see watch vs. warning.
Radar for nearby towns
- Vinton, IA radar 6 mi
- Dysart, IA radar 9 mi
- La Porte City, IA radar 12 mi
- Urbana, IA radar 14 mi
- Traer, IA radar 17 mi
- Atkins, IA radar 18 mi
- Belle Plaine, IA radar 19 mi
- Palo, IA radar 19 mi
- Center Point, IA radar 19 mi
- Evansdale, IA radar 23 mi