Duncan, SC Live Doppler Radar
Live radar for Duncan, Spartanburg County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.
What weather hits Duncan?
Since 1996, the National Weather Service has logged damaging thunderstorm winds on 315 days in the Northern Spartanburg forecast zone and Spartanburg County — the most common reported hazard around Duncan, mostly in July and June. Next come flash flooding (41 days) and lightning casualties & damage (33 days).
| Hazard | Days reported | Most recent | Worst on record |
|---|---|---|---|
| Damaging thunderstorm winds | 315 | Mar 2026 | Jun 14, 2007 · $8.0 million damage |
| Flash flooding | 41 | Sep 2024 | Oct 1, 2015 · 1 death · $200,000 damage |
| Lightning casualties & damage | 33 | Jun 2023 | Aug 29, 2007 · 1 death |
| Flooding | 19 | Sep 2024 | Feb 6, 2020 · $500,000 damage |
| Heavy snow & winter storms | 3 | Jan 2026 | — |
| Extreme cold & wind chill | 2 | Feb 2026 | — |
| Hurricanes & tropical storms | 1 | Sep 2024 | Sep 27, 2024 · 4 deaths · $25 million 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 Northern Spartanburg forecast zone and Spartanburg County; damage is as reported, not adjusted for inflation.
How much snow does Duncan get?
A normal year brings about 3.9 inches of snow to Duncan, based on NOAA's 1991–2020 climate normals for the Greer weather station 5.5 miles away. The snowiest month is usually January (1.6 in).
| Oct | Nov | Dec | Jan | Feb | Mar | Apr | May |
|---|---|---|---|---|---|---|---|
| 0.0 | 0.1 | 0.6 | 1.6 | 1.0 | 0.6 | 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 Duncan?
The closest NEXRAD Doppler radar is KGSP (Greer, SC), about 6 miles 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 Duncan | View |
|---|---|---|---|
| KGSP Greer, SC | 6 mi southwest | 300 ft | Excellent — the lowest scan sees close to the ground |
| KCAE Columbia, SC | 90 mi southeast | 8,100 ft | Fair — the beam can pass over shallow snow and low-level rotation |
| KMRX Knoxville, TN | 111 mi northwest | 11,300 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 Duncan
Since 1950, NOAA has recorded 85 tornadoes within 25 miles of Duncan, 20 of them EF2/F2 or stronger. Most came in April and May. The strongest was an F4 on May 5, 1989, which passed about 16 miles northeast of town and caused 2 deaths. The most recent was an EF0 on December 29, 2024, which touched down about 8 miles north-northwest of town.
Hail: 454 reports of 1-inch or larger hail within 25 miles since 1955, 33 of them 2 inches or more; the largest was 4.00-inch hail on May 2, 1957.
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 Duncan'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.
Duncan radar FAQ
Where is the nearest weather radar to Duncan, SC?
KGSP (Greer, SC), about 6 miles southwest. KCAE (Columbia, SC) is 90 miles away and also covers the area.
Can radar see a tornado near Duncan?
Radar can't see the tornado itself, but it shows the rotating storm and, once debris is lofted, a debris signature. Over Duncan the lowest scan from KGSP is about 300 ft up — excellent — the lowest scan sees close to the ground.
Is TALON's radar for Duncan 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 Duncan, follow it right away — see watch vs. warning.
Radar for nearby towns
- Lyman, SC radar 3 mi
- Wellford, SC radar 3 mi
- Greer, SC radar 5 mi
- Reidville, SC radar 5 mi
- Inman, SC radar 8 mi
- Spartanburg, SC radar 12 mi
- Mauldin, SC radar 14 mi
- Greenville, SC radar 14 mi
- Woodruff, SC radar 14 mi
- Simpsonville, SC radar 15 mi