Harriman, TN Live Doppler Radar

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

Open live radar for Harriman What TALON shows

What weather hits Harriman?

Since 1996, the National Weather Service has logged damaging thunderstorm winds on 191 days in the Roane forecast zone and Roane County — the most common reported hazard around Harriman, mostly in June and July. Next come heavy snow & winter storms (33 days) and flash flooding (24 days).

Hazard	Days reported	Most recent	Worst on record
Damaging thunderstorm winds	191	Mar 2026	Nov 28, 2005 · $400,000 damage
Heavy snow & winter storms	33	Jan 2026	Jan 14, 2024 · 2 deaths
Flash flooding	24	Mar 2025	May 5, 2003 · $2.8 million damage
Flooding	17	May 2024	Feb 23, 2019 · $11 million damage
Ice storms & sleet	6	Mar 2015	Dec 16, 2010 · $10,000 damage
High winds	4	Apr 2023	Apr 1, 2023 · 1 death
Extreme cold & wind chill	2	Dec 2022	Feb 16, 2015 · 1 death
Lightning casualties & damage	2	Jul 2018	Jul 6, 2018 · 1 death

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 Roane forecast zone and Roane County; damage is as reported, not adjusted for inflation.

How much snow does Harriman get?

A normal year brings about 1.8 inches of snow to Harriman, based on NOAA's 1991–2020 climate normals for the Kingston weather station 5.4 miles away. The snowiest month is usually January (1.1 in).

Oct	Nov	Dec	Jan	Feb	Mar	Apr	May
0.0	0.0	0.1	1.1	0.6	0.0	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 Harriman?

The closest NEXRAD Doppler radar is KMRX (Knoxville, TN), about 67 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 Harriman	View
KMRX Knoxville, TN	67 mi east-northeast	5,300 ft	Good — most storms and steady rain or snow show clearly
KHTX Huntsville, AL	110 mi southwest	11,100 ft	Limited — the beam overshoots the lowest part of storms
KOHX Nashville, TN	114 mi west-northwest	11,700 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 Harriman

Since 1950, NOAA has recorded 38 tornadoes within 25 miles of Harriman, 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 24 miles southwest of town and caused 4 deaths. The most recent was an EF0 on May 30, 2025, which touched down about 19 miles south of town.

Hail: 200 reports of 1-inch or larger hail within 25 miles since 1955, 12 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 Harriman'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.

Harriman radar FAQ

Where is the nearest weather radar to Harriman, TN?

KMRX (Knoxville, TN), about 67 miles east-northeast. KHTX (Huntsville, AL) is 110 miles away and also covers the area.

Does radar show snow in Harriman?

Yes. TALON colors snow blue, a rain–snow mix pink and freezing rain purple using NOAA's precipitation-type analysis. Over Harriman the lowest scan from KMRX is about 5,300 ft up.

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

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