This alert expired on 4 July 2026 at 20:00 UTC. It is kept here as a record.
It is the 3rd strongest of the 237 detections recorded within 20 km of this point since 15 March 2026. Another comparable one was recorded here earlier the same day. 11 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 4 at 2:30PM CDT until July 4 at 3:00PM CDT by NWS Lincoln IL
An estimated 128,407 people live within 50 km of this point.
Nearby, since 15 March 2026
- May 18, 2026 · score 43 · 11.9 km
- June 12, 2026 · score 37 · 14.0 km
- June 18, 2026 · score 43 · 19.1 km
How we know
Confirmed by 3 independent sources, including NOAA.
Our own score for this event is 43 out of 100, at 88 % 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) | 43 / 100 |
| Our confidence | 88% |
| Coordinates | 40.1985, -88.4521 |
| Nearest City | Champaign (20 km) |
| Population Exposed | 128.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-04T19:30:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.0d43591315e49b0262c071d7d49b634e |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | De Witt, IL; Logan, IL; Vermilion, IL |
| Headline | Severe Thunderstorm Warning issued July 4 at 2:30PM CDT until July 4 at 3:00PM CDT by NWS Lincoln IL |
| Expires | 2026-07-04T15:00:00-05:00 |
| SenderName | NWS Lincoln IL |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.0d43591315e49b0262c071d7d49b634ea215f6d0.001.1","noaa_urn:oid:2.49.0.1.840.0.0a8a7295fd497bf11482fd9891218f628d954d25.001.1"] |
| Iem TypeSummary | R |
| Iem Magnitude | 2.54 |
| Iem Unit | Inch |
| Iem City | 2 WNW Decatur |
| Iem County | Macon |
| Iem State | IL |
| Iem Wfo | ILX |
| Iem Remark | Cocorahs station IL-MA-41 Decatur 3.0 W. |
| MergedSources | [{"id":"iem_R_40.120_-88.860_1783187100000","source":"iem","severity":"low","severityValue":25,"timestamp":1783187100000,"latitude":40.12,"longitude":-88.86},{"id":"iem_R_39.850_-88.990_1783175220000","source":"iem","severity":"low","severityValue":25,"timestamp":1783175220000,"latitude":39.85,"longitude":-88.99}] |
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 Champaign?
Calamity.live data shows a weather event with CalamityScore 43/100, near Champaign (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.