Big Rock, IL Live Doppler Radar
Live radar for Big Rock, Kane County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.
What weather hits Big Rock?
Since 1996, the National Weather Service has logged damaging thunderstorm winds on 172 days in the Kane forecast zone and Kane County — the most common reported hazard around Big Rock, mostly in July and June. Next come heavy snow & winter storms (57 days) and flooding (33 days).
| Hazard | Days reported | Most recent | Worst on record |
|---|---|---|---|
| Damaging thunderstorm winds | 172 | Jun 2026 | Aug 4, 2008 · $500,000 damage |
| Heavy snow & winter storms | 57 | Dec 2025 | — |
| Flooding | 33 | Jun 2026 | Aug 23, 2007 · $5.0 million damage |
| High winds | 31 | Jun 2026 | Oct 26, 2010 · $50,000 damage |
| Extreme cold & wind chill | 27 | Jan 2026 | Feb 3, 2007 · 1 death |
| Flash flooding | 26 | Aug 2025 | Jul 17, 1996 · $15 million damage |
| Lightning casualties & damage | 15 | Jul 2023 | Jun 2, 2006 · 1 death |
| Excessive heat | 11 | Jun 2026 | Jul 21, 1999 · 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 Kane forecast zone and Kane County; damage is as reported, not adjusted for inflation.
How much snow does Big Rock get?
A normal year brings about 39 inches of snow to Big Rock, based on NOAA's 1991–2020 climate normals for the Elburn weather station 7.9 miles away. The snowiest month is usually February (12.6 in).
| Oct | Nov | Dec | Jan | Feb | Mar | Apr | May |
|---|---|---|---|---|---|---|---|
| 0.0 | 1.9 | 10.2 | 9.1 | 12.6 | 3.5 | 1.2 | 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 Big Rock?
The closest NEXRAD Doppler radar is KLOT (Chicago, IL), about 25 miles east-southeast. 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 Big Rock | View |
|---|---|---|---|
| KLOT Chicago, IL | 25 mi east-southeast | 1,500 ft | Excellent — the lowest scan sees close to the ground |
| KMKX Milwaukee/Sullivan, WI | 83 mi north | 7,300 ft | Fair — the beam can pass over shallow snow and low-level rotation |
| KDVN Quad Cities, IA | 107 mi west | 10,600 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 Big Rock
Since 1950, NOAA has recorded 158 tornadoes within 25 miles of Big Rock, 25 of them EF2/F2 or stronger. Most came in June and August. The strongest was an F5 on August 28, 1990, which passed about 11 miles east-southeast of town and caused 29 deaths. The most recent was an EF0 on March 14, 2025, which passed about 11 miles southeast of town.
Hail: 421 reports of 1-inch or larger hail within 25 miles since 1955, 37 of them 2 inches or more; the largest was 4.75-inch hail on June 10, 2015.
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 Big Rock'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.
Big Rock radar FAQ
Where is the nearest weather radar to Big Rock, IL?
KLOT (Chicago, IL), about 25 miles east-southeast. KMKX (Milwaukee/Sullivan, WI) is 83 miles away and also covers the area.
Does radar show snow in Big Rock?
Yes. TALON colors snow blue, a rain–snow mix pink and freezing rain purple using NOAA's precipitation-type analysis. Over Big Rock the lowest scan from KLOT is about 1,500 ft up.
Is TALON's radar for Big Rock 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 Big Rock, follow it right away — see watch vs. warning.
Radar for nearby towns
- Sugar Grove, IL radar 4 mi
- Hinckley, IL radar 6 mi
- Plano, IL radar 6 mi
- Yorkville, IL radar 9 mi
- Elburn, IL radar 9 mi
- Montgomery, IL radar 9 mi
- Sandwich, IL radar 9 mi
- North Aurora, IL radar 10 mi
- Maple Park, IL radar 11 mi
- Oswego, IL radar 11 mi