Signal Mountain, TN Live Doppler Radar
Live radar for Signal Mountain, Hamilton County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.
What weather hits Signal Mountain?
Since 1996, the National Weather Service has logged damaging thunderstorm winds on 264 days in the Hamilton forecast zone and Hamilton County — the most common reported hazard around Signal Mountain, mostly in June and July. Next come flash flooding (44 days) and heavy snow & winter storms (32 days).
| Hazard | Days reported | Most recent | Worst on record |
|---|---|---|---|
| Damaging thunderstorm winds | 264 | Jun 2026 | Jul 5, 2012 · 2 deaths |
| Flash flooding | 44 | May 2026 | Sep 26, 2018 · 1 death · $1.6 million damage |
| Heavy snow & winter storms | 32 | Jan 2025 | Jan 14, 2024 · 2 deaths |
| Flooding | 19 | Feb 2025 | Sep 20, 2009 · 1 death · $455,000 damage |
| Lightning casualties & damage | 8 | Aug 2025 | Jun 10, 1999 · $1.0 million damage |
| Ice storms & sleet | 3 | Feb 2015 | — |
| Debris flows | 2 | Mar 2021 | Feb 6, 2020 · $2.5 million damage |
| Hurricanes & tropical storms | 1 | Sep 2004 | Sep 16, 2004 · $15,000 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 Hamilton forecast zone and Hamilton County; damage is as reported, not adjusted for inflation.
How much snow does Signal Mountain get?
A normal year brings about 4.3 inches of snow to Signal Mountain, based on NOAA's 1991–2020 climate normals for the Soddy Daisy-Mowbray Mtn weather station 11 miles away. The snowiest month is usually February (1.8 in).
| Oct | Nov | Dec | Jan | Feb | Mar | Apr | May |
|---|---|---|---|---|---|---|---|
| 0.0 | 0.0 | 0.8 | 1.4 | 1.8 | 0.3 | 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 Signal Mountain?
The closest NEXRAD Doppler radar is KHTX (Huntsville, AL), about 45 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 Signal Mountain | View |
|---|---|---|---|
| KHTX Huntsville, AL | 45 mi west-southwest | 3,000 ft | Good — most storms and steady rain or snow show clearly |
| KOHX Nashville, TN | 103 mi northwest | 10,000 ft | Limited — the beam overshoots the lowest part of storms |
| KMRX Knoxville, TN | 130 mi east-northeast | 14,400 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 Signal Mountain
Since 1950, NOAA has recorded 90 tornadoes within 25 miles of Signal Mountain, 26 of them EF2/F2 or stronger. Most came in April and March. The strongest was an EF4 on April 27, 2011, which passed about 20 miles southeast of town and caused 20 deaths. The most recent was an EF1 on April 5, 2025, which passed about 23 miles west-northwest of town.
Hail: 240 reports of 1-inch or larger hail within 25 miles since 1955, 14 of them 2 inches or more; the largest was 3.00-inch hail on June 7, 1985.
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 Signal Mountain'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.
Signal Mountain radar FAQ
Where is the nearest weather radar to Signal Mountain, TN?
KHTX (Huntsville, AL), about 45 miles west-southwest. KOHX (Nashville, TN) is 103 miles away and also covers the area.
Does radar show snow in Signal Mountain?
Yes. TALON colors snow blue, a rain–snow mix pink and freezing rain purple using NOAA's precipitation-type analysis. Over Signal Mountain the lowest scan from KHTX is about 3,000 ft up.
Is TALON's radar for Signal Mountain 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 Signal Mountain, follow it right away — see watch vs. warning.
Radar for nearby towns
- Walden, TN radar 2 mi
- Red Bank, TN radar 3 mi
- Chattanooga, TN radar 8 mi
- Powells Crossroads, TN radar 9 mi
- Lookout Mountain, TN radar 10 mi
- Whitwell, TN radar 11 mi
- East Ridge, TN radar 12 mi
- Lakesite, TN radar 12 mi
- Soddy-Daisy, TN radar 13 mi
- Dunlap, TN radar 16 mi