Verified storm · closed

1.2–1.3" hail crossed DeKalb County, IL — August 16, 2025

Measured against the NOAA MRMS national radar feed on its 2-minute cycle — a verified event, not a forecast.

Storm stats

CountyDeKalb County, IL
Max hail (MESH)1.3"
Mean hail (MESH)1.2"
Swath area3.6 mi² (9 km²)
Radar cells (~1 km grid)10
First radar detection2025-08-16 22:00 UTC
Last radar detection2025-08-16 22:00 UTC
Verified2025-08-16 22:00 UTC
Swath centroid41.8220, -88.8810
Storm IDsw_feebc499

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DeKalb County, IL — verified storm record

Swath has 11 radar-verified hail storms on record for DeKalb County, IL going back to August 2025, the largest measuring 2.92″. Every one was measured against NOAA MRMS radar — not estimated, and not a forecast.