Knoxville, AR Live Doppler Radar
Live radar for Knoxville, Johnson County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.
What weather hits Knoxville?
Since 1996, the National Weather Service has logged damaging thunderstorm winds on 122 days in the Southern Johnson County forecast zone and Johnson County — the most common reported hazard around Knoxville, mostly in May and June. Next come flash flooding (44 days) and lightning casualties & damage (5 days).
| Hazard | Days reported | Most recent | Worst on record |
|---|---|---|---|
| Damaging thunderstorm winds | 122 | Jun 2026 | Jun 12, 2009 · $500,000 damage |
| Flash flooding | 44 | Sep 2025 | Apr 5, 1997 · 1 death |
| Lightning casualties & damage | 5 | Oct 2007 | Oct 1, 2007 · $125,000 damage |
| Heavy snow & winter storms | 3 | Jan 2026 | — |
| Flooding | 3 | May 2011 | May 1, 2011 · $500,000 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 Southern Johnson County forecast zone and Johnson County; damage is as reported, not adjusted for inflation.
How much snow does Knoxville get?
A normal year brings about 2.5 inches of snow to Knoxville, based on NOAA's 1991–2020 climate normals for the Clarksville 2N weather station 10.5 miles away. The snowiest month is usually February (0.8 in).
| Oct | Nov | Dec | Jan | Feb | Mar | Apr | May |
|---|---|---|---|---|---|---|---|
| 0.0 | 0.0 | 0.4 | 0.7 | 0.8 | 0.6 | 0.0 | 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 Knoxville?
The closest NEXRAD Doppler radar is KSRX (Fort Smith, AR), about 57 miles west. 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 Knoxville | View |
|---|---|---|---|
| KSRX Fort Smith, AR | 57 mi west | 4,200 ft | Good — most storms and steady rain or snow show clearly |
| KLZK Little Rock, AR | 73 mi east-southeast | 6,000 ft | Fair — the beam can pass over shallow snow and low-level rotation |
| KSGF Springfield, MO | 128 mi north | 14,200 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 Knoxville
Since 1950, NOAA has recorded 96 tornadoes within 25 miles of Knoxville, 40 of them EF2/F2 or stronger. Most came in April and March. The strongest was an EF4 on May 24, 2011, which passed about 15 miles northwest of town and caused 4 deaths. The most recent was a tornado of unknown strength on November 4, 2024, which touched down about 25 miles north of town.
Hail: 286 reports of 1-inch or larger hail within 25 miles since 1955, 29 of them 2 inches or more; the largest was 4.50-inch hail on April 11, 2022.
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, AR?
KSRX (Fort Smith, AR), about 57 miles west. KLZK (Little Rock, AR) is 73 miles away and also covers the area.
Can radar see a tornado near Knoxville?
Radar can't see the tornado itself, but it shows the rotating storm and, once debris is lofted, a debris signature. Over Knoxville the lowest scan from KSRX is about 4,200 ft up — good — most storms and steady rain or snow show clearly.
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.
Radar for nearby towns
- Lamar, AR radar 5 mi
- London, AR radar 8 mi
- Clarksville, AR radar 9 mi
- Dover, AR radar 14 mi
- Russellville, AR radar 14 mi
- Dardanelle, AR radar 15 mi
- Pottsville, AR radar 20 mi
- Paris, AR radar 22 mi
- Danville, AR radar 23 mi
- Atkins, AR radar 25 mi