Lanark, IL Live Doppler Radar
Live radar for Lanark, Carroll County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.
What weather hits Lanark?
Since 1996, the National Weather Service has logged damaging thunderstorm winds on 95 days in the Carroll forecast zone and Carroll County — the most common reported hazard around Lanark, mostly in June and July. Next come heavy snow & winter storms (82 days) and flash flooding (25 days).
| Hazard | Days reported | Most recent | Worst on record |
|---|---|---|---|
| Damaging thunderstorm winds | 95 | Apr 2026 | Jun 23, 1996 · $1.0 million damage |
| Heavy snow & winter storms | 82 | Nov 2025 | — |
| Flash flooding | 25 | Apr 2026 | Jul 24, 2010 · $10 million damage |
| Flooding | 18 | Jul 2024 | Apr 18, 2011 · $250,000 damage |
| Extreme cold & wind chill | 17 | Jan 2019 | — |
| High winds | 12 | Feb 2019 | May 4, 2003 · $1.0 million damage |
| Ice storms & sleet | 8 | Feb 2023 | — |
| Blizzards | 5 | Mar 2026 | — |
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 Carroll forecast zone and Carroll County; damage is as reported, not adjusted for inflation.
How much snow does Lanark get?
A normal year brings about 33 inches of snow to Lanark, based on NOAA's 1991–2020 climate normals for the Mt Carroll weather station 7.7 miles away. The snowiest month is usually January (10.2 in).
| Oct | Nov | Dec | Jan | Feb | Mar | Apr | May |
|---|---|---|---|---|---|---|---|
| 0.4 | 1.7 | 8.8 | 10.2 | 7.9 | 3.6 | 0.8 | 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 Lanark?
The closest NEXRAD Doppler radar is KDVN (Quad Cities, IA), about 51 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 Lanark | View |
|---|---|---|---|
| KDVN Quad Cities, IA | 51 mi southwest | 3,700 ft | Good — most storms and steady rain or snow show clearly |
| KMKX Milwaukee/Sullivan, WI | 89 mi northeast | 8,000 ft | Fair — the beam can pass over shallow snow and low-level rotation |
| KLOT Chicago, IL | 96 mi east-southeast | 9,100 ft | Fair — the beam can pass over shallow snow and low-level rotation |
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 Lanark
Since 1950, NOAA has recorded 82 tornadoes within 25 miles of Lanark, 14 of them EF2/F2 or stronger. Most came in June and May. The strongest was an F4 on March 29, 1981, which passed about 24 miles south of town. The most recent was an EF1 on July 15, 2024, which passed about 5 miles north-northeast of town.
Hail: 190 reports of 1-inch or larger hail within 25 miles since 1955, 17 of them 2 inches or more; the largest was 4.00-inch hail on July 13, 2004.
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 Lanark'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.
Lanark radar FAQ
Where is the nearest weather radar to Lanark, IL?
KDVN (Quad Cities, IA), about 51 miles southwest. KMKX (Milwaukee/Sullivan, WI) is 89 miles away and also covers the area.
Does radar show snow in Lanark?
Yes. TALON colors snow blue, a rain–snow mix pink and freezing rain purple using NOAA's precipitation-type analysis. Over Lanark the lowest scan from KDVN is about 3,700 ft up.
Is TALON's radar for Lanark 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 Lanark, follow it right away — see watch vs. warning.
Radar for nearby towns
- Mount Carroll, IL radar 7 mi
- Forreston, IL radar 13 mi
- Polo, IL radar 15 mi
- Savanna, IL radar 16 mi
- Freeport, IL radar 16 mi
- Thomson, IL radar 17 mi
- Lena, IL radar 19 mi
- Stockton, IL radar 19 mi
- Mount Morris, IL radar 21 mi
- Morrison, IL radar 21 mi