This alert expired on 10 June 2026 at 21:15 UTC. It is kept here as a record.
It is the 10th strongest of the 52 detections recorded within 20 km of this point since 3 April 2026. Another comparable one was recorded here earlier the same day. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 10 at 3:20PM CDT until June 10 at 4:15PM CDT by NWS Chicago IL
An estimated 529,052 people live within 50 km of this point.
Nearby, since 3 April 2026
- June 24, 2026 · score 48 · 11.3 km
- June 11, 2026 · score 41 · 11.7 km
- July 3, 2026 · score 48 · 16.7 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 41 out of 100, at 80 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 41 / 100 |
| Our confidence | 80% |
| Coordinates | 42.3733, -88.8426 |
| Nearest City | Belvidere (13 km) |
| Population Exposed | 529.1K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-10T20:20:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.53fd4d6e82ebc5c92443efb9dcc8b7a6 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Cook, IL; Grundy, IL; Will, IL; Logan, IL; McLean, IL; Mason, IL; Menard, IL; Sangamon, IL; Tazewell, IL; McLean, IL; Marshall, IL; Tazewell, IL; Woodford, IL and 10 more areas |
| Headline | Severe Thunderstorm Warning issued June 10 at 3:20PM CDT until June 10 at 4:15PM CDT by NWS Chicago IL |
| Expires | 2026-06-10T16:15:00-05:00 |
| SenderName | NWS Chicago IL |
| HasExactCoords | true |
| MergedCount | 13 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.53fd4d6e82ebc5c92443efb9dcc8b7a605d0ea15.001.1","noaa_urn:oid:2.49.0.1.840.0.7f9868ad0e68c6b6061f666b5296d4a3a179b3af.001.1","noaa_urn:oid:2.49.0.1.840.0.6c400970f51875132a228da75cf9f3699e5f916f.001.1","noaa_urn:oid:2.49.0.1.840.0.9cece69dabcf1f4c311e6adb416d0e0092432a22.001.1","noaa_urn:oid:2.49.0.1.840.0.53759e144ae9ed7359a6aa5a7d0f27c3868601ea.001.1","noaa_urn:oid:2.49.0.1.840.0.99b8ec0ef6bb411c1ffaad13b3731a2ad7e1b674.001.1","noaa_urn:oid:2.49.0.1.840.0.0ccf073f31cd398ce9cd2d225b306c766059cc0c.001.1","noaa_urn:oid:2.49.0.1.840.0.6ba01552dea7f2ff54c4caff52fdf418916fb073.001.1","noaa_urn:oid:2.49.0.1.840.0.ec3d9cb7c1c16a25ac360cbdc19defb4831fcbcc.001.1","noaa_urn:oid:2.49.0.1.840.0.f21fa27a56ca11ad9c27130c4f4809dbed03402c.001.1","noaa_urn:oid:2.49.0.1.840.0.482c69c3b30e14134ee8fff39d0eac0551196ba0.001.1","noaa_urn:oid:2.49.0.1.840.0.8140b8dc02b40079ec39d641586e263f25c1c4b7.002.1","noaa_urn:oid:2.49.0.1.840.0.40199154494afc8292005e2dc1ad2db380b2f28a.001.1"] |
Safety Information
Always follow official guidance from your local emergency management agency. This platform provides scientific monitoring data and is not a substitute for official warnings. If you are in immediate danger, contact your local emergency number.
Series begins 10 February 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
Want to know when something happens near Belvidere?
Calamity.live data shows a weather event with CalamityScore 41/100, near Belvidere (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.