South Mount Vernon, OH Live Doppler Radar

Live radar for South Mount Vernon, Knox County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.

Open live radar for South Mount VernonWhat TALON shows

What weather hits South Mount Vernon?

Since 1996, the National Weather Service has logged damaging thunderstorm winds on 163 days in the Knox forecast zone and Knox County — the most common reported hazard around South Mount Vernon, mostly in June and July. Next come high winds (33 days) and heavy snow & winter storms (30 days).

HazardDays reportedMost recentWorst on record
Damaging thunderstorm winds163Jun 2026Jul 29, 2002 · 1 death · $50,000 damage
High winds33Nov 2020Sep 14, 2008 · $4.8 million damage
Heavy snow & winter storms30Feb 2024Mar 7, 2008 · $750 million damage
Flash flooding16Jun 2024Jun 27, 1998 · $4.0 million damage
Flooding11May 2020Jan 1, 2005 · $750,000 damage
Extreme cold & wind chill9Dec 2022Feb 2, 1996 · $20,000 damage
Ice storms & sleet3Mar 2007Jan 5, 2005 · $6.8 million damage
Excessive heat2Jul 1999—

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 South Mount Vernon get?

A normal year brings about 42 inches of snow to South Mount Vernon, based on NOAA's 1991–2020 climate normals for the Danville 2 W weather station 11.1 miles away. The snowiest month is usually January (12.9 in).

OctNovDecJanFebMarAprMay
0.02.38.112.910.66.51.20.0

Normal snowfall in inches. TALON Pro compares this season's snow at your location with these normals as winter goes on.

Which radars cover South Mount Vernon?

The closest NEXRAD Doppler radar is KCLE (Cleveland, OH), about 79 miles north-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.

RadarDistanceLowest beam over South Mount VernonView
KCLE
Cleveland, OH		79 mi north-northeast6,700 ftFair — the beam can pass over shallow snow and low-level rotation
KILN
Wilmington, OH		97 mi southwest9,100 ftFair — the beam can pass over shallow snow and low-level rotation
KPBZ
Pittsburgh, PA		121 mi east12,800 ftLimited — 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 South Mount Vernon

Since 1950, NOAA has recorded 66 tornadoes within 25 miles of South Mount Vernon, 22 of them EF2/F2 or stronger. Most came in June and August. The strongest was an F3 on June 13, 1981, which passed about 22 miles west-northwest of town and caused 4 deaths. The most recent was an EF0 on June 5, 2024, which touched down about 16 miles west-southwest of town.

Hail: 176 reports of 1-inch or larger hail within 25 miles since 1955, 8 of them 2 inches or more; the largest was 2.75-inch hail on May 11, 1980.

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 South Mount Vernon'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.

South Mount Vernon radar FAQ

Where is the nearest weather radar to South Mount Vernon, OH?

KCLE (Cleveland, OH), about 79 miles north-northeast. KILN (Wilmington, OH) is 97 miles away and also covers the area.

Does radar show snow in South Mount Vernon?

Yes. TALON colors snow blue, a rain–snow mix pink and freezing rain purple using NOAA's precipitation-type analysis. Over South Mount Vernon the lowest scan from KCLE is about 6,700 ft up, so light snow from shallow clouds can be under-shown — check NWS winter alerts too.

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

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