John Sevier, TN Live Doppler Radar
Live radar for John Sevier, Knox County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.
What weather hits John Sevier?
Since 1996, the National Weather Service has logged damaging thunderstorm winds on 273 days in the Knox forecast zone and Knox County — the most common reported hazard around John Sevier, mostly in June and July. Next come flash flooding (47 days) and heavy snow & winter storms (32 days).
| Hazard | Days reported | Most recent | Worst on record |
|---|---|---|---|
| Damaging thunderstorm winds | 273 | May 2026 | Nov 9, 2000 · 2 deaths · $3,000 damage |
| Flash flooding | 47 | Jun 2026 | May 5, 2003 · $2.8 million damage |
| Heavy snow & winter storms | 32 | Jan 2026 | Jan 14, 2024 · 4 deaths |
| Flooding | 26 | Aug 2025 | Feb 23, 2019 · 1 death · $33 million damage |
| High winds | 8 | Sep 2024 | Sep 27, 2024 · 1 death |
| Ice storms & sleet | 4 | Feb 2015 | — |
| Excessive heat | 2 | Jun 1998 | Jun 27, 1998 · 1 death |
| Lightning casualties & damage | 1 | Aug 2006 | Aug 4, 2006 · $25,000 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 Knox forecast zone and Knox County; damage is as reported, not adjusted for inflation.
How much snow does John Sevier get?
A normal year brings about 3.6 inches of snow to John Sevier, based on NOAA's 1991–2020 climate normals for the Sevierville weather station 14.7 miles away. The snowiest month is usually January (1.5 in).
| Oct | Nov | Dec | Jan | Feb | Mar | Apr | May |
|---|---|---|---|---|---|---|---|
| 0.0 | 0.0 | 0.2 | 1.5 | 1.0 | 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 John Sevier?
The closest NEXRAD Doppler radar is KMRX (Knoxville, TN), about 25 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 John Sevier | View |
|---|---|---|---|
| KMRX Knoxville, TN | 25 mi east-northeast | 1,500 ft | Excellent — the lowest scan sees close to the ground |
| KJKL Jackson, KY | 111 mi north-northeast | 11,300 ft | Limited — the beam overshoots the lowest part of storms |
| KGSP Greer, SC | 121 mi southeast | 12,800 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 John Sevier
Since 1950, NOAA has recorded 38 tornadoes within 25 miles of John Sevier, 7 of them EF2/F2 or stronger. Most came in April and June. The strongest was an F3 on February 21, 1993, which passed about 22 miles south-southwest of town and caused 1 death. The most recent was an EF2 on August 7, 2023, which passed about 16 miles west-southwest of town.
Hail: 300 reports of 1-inch or larger hail within 25 miles since 1955, 23 of them 2 inches or more; the largest was 3.50-inch hail on February 21, 1993.
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 John Sevier'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.
John Sevier radar FAQ
Where is the nearest weather radar to John Sevier, TN?
KMRX (Knoxville, TN), about 25 miles east-northeast. KJKL (Jackson, KY) is 111 miles away and also covers the area.
Does radar show snow in John Sevier?
Yes. TALON colors snow blue, a rain–snow mix pink and freezing rain purple using NOAA's precipitation-type analysis. Over John Sevier the lowest scan from KMRX is about 1,500 ft up.
Is TALON's radar for John Sevier 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 John Sevier, follow it right away — see watch vs. warning.
Radar for nearby towns
- Knoxville, TN radar 8 mi
- Plainview, TN radar 10 mi
- Blaine, TN radar 10 mi
- Luttrell, TN radar 13 mi
- Maynardville, TN radar 14 mi
- New Market, TN radar 16 mi
- Sevierville, TN radar 17 mi
- Alcoa, TN radar 17 mi
- Clinton, TN radar 17 mi
- Norris, TN radar 18 mi