Right now
The most recent data we hold from NOAA arrived 2 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 18 May 2026 at 19:50 UTC. It is kept here as a record.
No stronger detection stands among the 54 recorded within 20 km of this point since 16 March 2026 — 3 others scored the same. Another comparable one was recorded here earlier the same day. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 18 at 3:42PM EDT until May 18 at 3:45PM EDT by NWS Detroit/Pontiac MI
An estimated 194,867 people live within 50 km of this point.
Nearby, since 16 March 2026
- May 18, 2026 · score 43 · 4.9 km
- June 17, 2026 · score 37 · 6.2 km
- August 10, 2026 · score 43 · 8.9 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 43 out of 100, at 79 % 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) | 43 / 100 |
| Our confidence | 79% |
| Coordinates | 42.2500, -84.2852 |
| Nearest City | Jackson (9 km) |
| Population Exposed | 194.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-18T19:42:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.43342c7490b8b2a657216d71ae7f7bc5 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Wayne, MI; Livingston, MI; Steuben, IN; Hillsdale, MI; Defiance, OH; Williams, OH and 10 more areas |
| Headline | Severe Thunderstorm Warning issued May 18 at 3:42PM EDT until May 18 at 3:45PM EDT by NWS Detroit/Pontiac MI |
| Expires | 2026-05-18T15:50:00-04:00 |
| SenderName | NWS Detroit/Pontiac MI |
| HasExactCoords | true |
| MergedCount | 13 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.43342c7490b8b2a657216d71ae7f7bc5d1ff7785.001.1","noaa_urn:oid:2.49.0.1.840.0.dc15b4e8e7498332eb293910427c0ae725c2132b.001.1","noaa_urn:oid:2.49.0.1.840.0.fde0627046b4551388e39387da5bb6b9e13085d6.002.1","noaa_urn:oid:2.49.0.1.840.0.a651b96f267a90c9b104fe72a2df8f7bc2e0985c.001.1","noaa_urn:oid:2.49.0.1.840.0.a63b2824003e3cae9a86f4cd4c5272b16caf03a9.001.1","noaa_urn:oid:2.49.0.1.840.0.df7f858b1cb7efdd4c90c1911cfaa1685071a8e7.002.1","noaa_urn:oid:2.49.0.1.840.0.fd22478009eebf3e88b63382b4b51cf52916e445.001.1","noaa_urn:oid:2.49.0.1.840.0.d78f8a6c56e3e1ab9f777e0ebdfdece9a9b4f0dc.001.1","noaa_urn:oid:2.49.0.1.840.0.87d66536b7ae416cfd5cc15e5c2a327634961167.001.1","noaa_urn:oid:2.49.0.1.840.0.bd99deb25955faddfb9119110628dc8b44e6be64.001.1","noaa_urn:oid:2.49.0.1.840.0.ed20964195b85aedb1163d6046168fede8140b87.001.1","noaa_urn:oid:2.49.0.1.840.0.18486643277cb504043e62f3d180071afcfbc852.001.1","noaa_urn:oid:2.49.0.1.840.0.520be76a63f26ab59de5cdd3dd19b9879feb5524.001.1"] |
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.
Want to know when something happens near Jackson?
Calamity.live data shows a weather event with CalamityScore 43/100, near Jackson (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.