South Jacksonville, IL Live Doppler Radar
Live radar for South Jacksonville, Morgan County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.
What weather hits South Jacksonville?
Since 1996, the National Weather Service has logged damaging thunderstorm winds on 89 days in the Morgan forecast zone and Morgan County — the most common reported hazard around South Jacksonville, mostly in June and May. Next come heavy snow & winter storms (36 days) and flash flooding (28 days).
| Hazard | Days reported | Most recent | Worst on record |
|---|---|---|---|
| Damaging thunderstorm winds | 89 | Jun 2026 | Aug 12, 1999 · $12 million damage |
| Heavy snow & winter storms | 36 | Jan 2026 | — |
| Flash flooding | 28 | Aug 2022 | Sep 20, 2009 · 1 death |
| Excessive heat | 16 | Aug 2024 | Jul 20, 2011 · 1 death |
| Flooding | 14 | May 2020 | — |
| High winds | 9 | Nov 2019 | Mar 24, 2009 · $12,000 damage |
| Extreme cold & wind chill | 7 | Jan 2026 | Feb 14, 2015 · 2 deaths |
| Blizzards | 4 | Dec 2012 | Feb 1, 2011 · $220,000 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 Morgan forecast zone and Morgan County; damage is as reported, not adjusted for inflation.
How much snow does South Jacksonville get?
A normal year brings about 16 inches of snow to South Jacksonville, based on NOAA's 1991–2020 climate normals for the Jacksonville 2E weather station 2.8 miles away. The snowiest month is usually January (5.1 in).
| Oct | Nov | Dec | Jan | Feb | Mar | Apr | May |
|---|---|---|---|---|---|---|---|
| 0.0 | 1.0 | 3.5 | 5.1 | 4.3 | 2.0 | 0.3 | 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 South Jacksonville?
The closest NEXRAD Doppler radar is KILX (Lincoln, IL), about 56 miles 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 South Jacksonville | View |
|---|---|---|---|
| KILX Lincoln, IL | 56 mi northeast | 4,200 ft | Good — most storms and steady rain or snow show clearly |
| KLSX St. Louis, MO | 73 mi south-southwest | 6,100 ft | Fair — the beam can pass over shallow snow and low-level rotation |
| KDVN Quad Cities, IA | 133 mi north | 15,100 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 South Jacksonville
Since 1950, NOAA has recorded 112 tornadoes within 25 miles of South Jacksonville, 25 of them EF2/F2 or stronger. Most came in May and June. The strongest was an F3 on April 22, 1963, which passed about 22 miles east-northeast of town and caused 1 death. The most recent was a tornado of unknown strength on June 18, 2025, which touched down about 18 miles west-southwest of town.
Hail: 196 reports of 1-inch or larger hail within 25 miles since 1955, 20 of them 2 inches or more; the largest was 4.00-inch hail on March 14, 2024.
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 Jacksonville'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 Jacksonville radar FAQ
Where is the nearest weather radar to South Jacksonville, IL?
KILX (Lincoln, IL), about 56 miles northeast. KLSX (St. Louis, MO) is 73 miles away and also covers the area.
Does radar show snow in South Jacksonville?
Yes. TALON colors snow blue, a rain–snow mix pink and freezing rain purple using NOAA's precipitation-type analysis. Over South Jacksonville the lowest scan from KILX is about 4,200 ft up.
Is TALON's radar for South Jacksonville 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 Jacksonville, follow it right away — see watch vs. warning.
Radar for nearby towns
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