Knoxville, IA Live Doppler Radar

Live radar for Knoxville, Marion County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.

Open live radar for KnoxvilleWhat TALON shows

What weather hits Knoxville?

Since 1996, the National Weather Service has logged damaging thunderstorm winds on 93 days in the Marion forecast zone and Marion County — the most common reported hazard around Knoxville, mostly in June and May. Next come flooding (84 days) and heavy snow & winter storms (53 days).

HazardDays reportedMost recentWorst on record
Damaging thunderstorm winds93Jun 2025Jun 21, 1997 · $1.0 million damage
Flooding84Jul 2024Jun 12, 2010 · $20 million damage
Heavy snow & winter storms53Feb 2025Oct 26, 1997 · $3.2 million damage
High winds32Mar 2025Nov 10, 1998 · $305,000 damage
Flash flooding23Jul 2024Jun 23, 2000 · $300,000 damage
Extreme cold & wind chill15Jan 2025Sep 21, 1999 · $294,000 damage
Blizzards13Mar 2025Dec 20, 2012 · $100,000 damage
Ice storms & sleet11Jan 2017Jan 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 Marion forecast zone and Marion County; damage is as reported, not adjusted for inflation.

Which radars cover Knoxville?

The closest NEXRAD Doppler radar is KDMX (Des Moines, IA), about 43 miles 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.

RadarDistanceLowest beam over KnoxvilleView
KDMX
Des Moines, IA		43 mi northwest2,900 ftExcellent — the lowest scan sees close to the ground
KDVN
Quad Cities, IA		132 mi east14,800 ftLimited — the beam overshoots the lowest part of storms
KOAX
Omaha, NE		169 mi west22,200 ftLimited — 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 Knoxville

Since 1950, NOAA has recorded 111 tornadoes within 25 miles of Knoxville, 26 of them EF2/F2 or stronger. Most came in May and June. The strongest was an EF4 on March 5, 2022, which passed about 23 miles north-northwest of town and caused 6 deaths. The most recent was a tornado of unknown strength on June 25, 2024, which touched down about 23 miles north of town.

Hail: 400 reports of 1-inch or larger hail within 25 miles since 1955, 44 of them 2 inches or more; the largest was 4.75-inch hail on May 8, 2003.

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 Knoxville'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.

Knoxville radar FAQ

Where is the nearest weather radar to Knoxville, IA?

KDMX (Des Moines, IA), about 43 miles northwest. KDVN (Quad Cities, IA) is 132 miles away and also covers the area.

Does radar show snow in Knoxville?

Yes. TALON colors snow blue, a rain–snow mix pink and freezing rain purple using NOAA's precipitation-type analysis. Over Knoxville the lowest scan from KDMX is about 2,900 ft up.

Is TALON's radar for Knoxville 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 Knoxville, follow it right away — see watch vs. warning.

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