Osco, IL Live Doppler Radar

Live radar for Osco, Henry County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.

Open live radar for Osco What TALON shows

What weather hits Osco?

Since 1996, the National Weather Service has logged damaging thunderstorm winds on 134 days in the Henry forecast zone and Henry County — the most common reported hazard around Osco, mostly in June and May. Next come heavy snow & winter storms (77 days) and flash flooding (28 days).

Hazard	Days reported	Most recent	Worst on record
Damaging thunderstorm winds	134	Jun 2026	Jul 21, 2008 · 2 deaths
Heavy snow & winter storms	77	Nov 2025	Jan 4, 2004 · $5,000 damage
Flash flooding	28	Jun 2026	Apr 30, 2003 · $10 million damage
Flooding	23	Jun 2019	Jun 22, 2009 · $250,000 damage
Extreme cold & wind chill	13	Jan 2019	—
Ice storms & sleet	13	Feb 2019	Jan 5, 2005 · $10,000 damage
High winds	10	Feb 2019	Apr 6, 1997 · $250,000 damage
Blizzards	6	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 Henry forecast zone and Henry County; damage is as reported, not adjusted for inflation.

How much snow does Osco get?

A normal year brings about 28 inches of snow to Osco, based on NOAA's 1991–2020 climate normals for the Geneseo weather station 10 miles away. The snowiest month is usually January (9.8 in).

Oct	Nov	Dec	Jan	Feb	Mar	Apr	May
0.1	1.6	7.3	9.8	6.1	2.8	0.7	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 Osco?

The closest NEXRAD Doppler radar is KDVN (Quad Cities, IA), about 24 miles northwest. 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 Osco	View
KDVN Quad Cities, IA	24 mi northwest	1,400 ft	Excellent — the lowest scan sees close to the ground
KILX Lincoln, IL	96 mi south-southeast	9,100 ft	Fair — the beam can pass over shallow snow and low-level rotation
KLOT Chicago, IL	115 mi east	11,900 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 Osco

Since 1950, NOAA has recorded 166 tornadoes within 25 miles of Osco, 31 of them EF2/F2 or stronger. Most came in April and May. The strongest was an F3 on June 14, 1974, which passed about 19 miles west-southwest of town. The most recent was an EF2 on July 11, 2025, which passed about 23 miles northwest of town.

Hail: 355 reports of 1-inch or larger hail within 25 miles since 1955, 35 of them 2 inches or more; the largest was 4.00-inch hail on April 4, 2023.

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 Osco'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.

Osco radar FAQ

Where is the nearest weather radar to Osco, IL?

KDVN (Quad Cities, IA), about 24 miles northwest. KILX (Lincoln, IL) is 96 miles away and also covers the area.

Does radar show snow in Osco?

Yes. TALON colors snow blue, a rain–snow mix pink and freezing rain purple using NOAA's precipitation-type analysis. Over Osco the lowest scan from KDVN is about 1,400 ft up.

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

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