This alert expired on 19 May 2026 at 19:30 UTC. It is kept here as a record.
No stronger detection stands among the 41 recorded within 20 km of this point since 31 March 2026 — 14 others scored the same. Another comparable one was recorded here earlier the same day. 12 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 19 at 2:52PM EDT until May 19 at 3:30PM EDT by NWS Detroit/Pontiac MI
An estimated 2,703,260 people live within 50 km of this point.
Nearby, since 31 March 2026
- July 3, 2026 · score 52 · 6.3 km
- May 19, 2026 · score 52 · 11.8 km
- April 4, 2026 · score 52 · 15.8 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 52 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) | 52 / 100 |
| Our confidence | 80% |
| Coordinates | 42.5640, -83.5523 |
| Nearest City | Novi (11 km) |
| Population Exposed | 2.7M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-19T18:52:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.f8c830591c1a83b5fcbdf299a1bd62b2 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Oakland, MI; Livingston, MI; Washtenaw, MI |
| Headline | Severe Thunderstorm Warning issued May 19 at 2:52PM EDT until May 19 at 3:30PM EDT by NWS Detroit/Pontiac MI |
| Expires | 2026-05-19T15:30:00-04:00 |
| SenderName | NWS Detroit/Pontiac MI |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.f8c830591c1a83b5fcbdf299a1bd62b2edee486e.001.1","noaa_urn:oid:2.49.0.1.840.0.d7141d3d06bdbef748687f162a9172f877fe1691.001.1"] |
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.
Calamity.live data shows a weather event with CalamityScore 52/100, near Novi (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.