Right now
The most recent data we hold from NOAA arrived 4 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 3 July 2026 at 20:15 UTC. It is kept here as a record.
It is the 21st strongest of the 77 detections recorded within 20 km of this point since 3 April 2026. Another comparable one was recorded here earlier the same day. 8 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 3 at 2:38PM CDT until July 3 at 3:15PM CDT by NWS Chicago IL
An estimated 653,176 people live within 50 km of this point.
Nearby, since 3 April 2026
- May 18, 2026 · score 52 · 3.0 km
- August 11, 2026 · score 52 · 4.0 km
- July 4, 2026 · score 52 · 5.7 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 48 out of 100, at 78 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 48 / 100 |
| Our confidence | 78% |
| Coordinates | 41.8887, -87.0423 |
| Nearest City | Michigan City (23 km) |
| Population Exposed | 653.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-03T19:38:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.7b709b6ed1aac9613a462e7d10621a62 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Cook, IL; Will, IL; Berrien, MI and 1 more areas |
| Headline | Severe Thunderstorm Warning issued July 3 at 2:38PM CDT until July 3 at 3:15PM CDT by NWS Chicago IL |
| Expires | 2026-07-03T15:15:00-05:00 |
| SenderName | NWS Chicago IL |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.7b709b6ed1aac9613a462e7d10621a62d2fc22a0.001.1","noaa_urn:oid:2.49.0.1.840.0.d1377436d1531f44826982ba542782eaf0f61420.001.1","noaa_urn:oid:2.49.0.1.840.0.fe792135c5896f49289f406b13724da7c5855c17.001.1","noaa_urn:oid:2.49.0.1.840.0.47e372fed86ef349d0837960136fc83300f406c5.001.1"] |
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 8 March 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.
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