Louisville, TN Live Doppler Radar
Live radar for Louisville, Blount County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.
What weather hits Louisville?
Since 1996, the National Weather Service has logged damaging thunderstorm winds on 209 days in the NW Blount forecast zone and Blount County — the most common reported hazard around Louisville, mostly in June and July. Next come heavy snow & winter storms (36 days) and flash flooding (17 days).
| Hazard | Days reported | Most recent | Worst on record |
|---|---|---|---|
| Damaging thunderstorm winds | 209 | Mar 2026 | Apr 25, 2010 · $120,000 damage |
| Heavy snow & winter storms | 36 | Jan 2026 | — |
| Flash flooding | 17 | May 2026 | May 5, 2003 · $3.6 million damage |
| Flooding | 15 | Jan 2024 | Feb 23, 2019 · $2.8 million damage |
| High winds | 12 | Mar 2025 | Dec 9, 2009 · $20,000 damage |
| Ice storms & sleet | 3 | Dec 2010 | Dec 16, 2010 · $10,000 damage |
| Lightning casualties & damage | 2 | May 1999 | Jul 13, 1996 · 1 death |
| Excessive heat | 1 | Aug 2007 | — |
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 NW Blount forecast zone and Blount County; damage is as reported, not adjusted for inflation.
How much snow does Louisville get?
A normal year brings about 4.6 inches of snow to Louisville, based on NOAA's 1991–2020 climate normals for the Knoxville Mcghee Tyson Ap weather station 3.8 miles away. The snowiest month is usually January (1.7 in).
| Oct | Nov | Dec | Jan | Feb | Mar | Apr | May |
|---|---|---|---|---|---|---|---|
| 0.0 | 0.1 | 0.5 | 1.7 | 1.4 | 0.9 | 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 Louisville?
The closest NEXRAD Doppler radar is KMRX (Knoxville, TN), about 44 miles east-northeast. 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 Louisville | View |
|---|---|---|---|
| KMRX Knoxville, TN | 44 mi east-northeast | 3,000 ft | Good — most storms and steady rain or snow show clearly |
| KGSP Greer, SC | 122 mi east-southeast | 13,100 ft | Limited — the beam overshoots the lowest part of storms |
| KJKL Jackson, KY | 129 mi north-northeast | 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 Louisville
Since 1950, NOAA has recorded 53 tornadoes within 25 miles of Louisville, 13 of them EF2/F2 or stronger. Most came in April and May. The strongest was an EF4 on April 27, 2011, which passed about 16 miles southeast of town. The most recent was an EF1 on May 20, 2025, which touched down about 22 miles west-northwest of town.
Hail: 309 reports of 1-inch or larger hail within 25 miles since 1955, 28 of them 2 inches or more; the largest was 4.00-inch hail on April 28, 1959.
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 Louisville'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.
Louisville radar FAQ
Where is the nearest weather radar to Louisville, TN?
KMRX (Knoxville, TN), about 44 miles east-northeast. KGSP (Greer, SC) is 122 miles away and also covers the area.
Does radar show snow in Louisville?
Yes. TALON colors snow blue, a rain–snow mix pink and freezing rain purple using NOAA's precipitation-type analysis. Over Louisville the lowest scan from KMRX is about 3,000 ft up.
Is TALON's radar for Louisville 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 Louisville, follow it right away — see watch vs. warning.
Radar for nearby towns
- Alcoa, TN radar 5 mi
- Maryville, TN radar 7 mi
- Farragut, TN radar 8 mi
- Knoxville, TN radar 12 mi
- Lenoir City, TN radar 13 mi
- Greenback, TN radar 14 mi
- Oak Ridge, TN radar 17 mi
- Loudon, TN radar 18 mi
- Vonore, TN radar 19 mi
- Clinton, TN radar 19 mi