This alert expired on 18 May 2026 at 19:30 UTC. It is kept here as a record.
No stronger detection stands among the 19 recorded within 20 km of this point since 17 March 2026 — 8 others scored the same. Another comparable one was recorded here earlier the same day. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 18 at 2:48PM EDT until May 18 at 3:30PM EDT by NWS Gaylord MI
Nearby, since 17 March 2026
- July 27, 2026 · score 22 · 11.3 km
How we know
Confirmed by 7 independent sources, including NOAA.
Our own score for this event is 22 out of 100, at 69 % 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) | 22 / 100 |
| Our confidence | 69% |
| Coordinates | 45.1251, -84.4040 |
| Nearest City | Traverse City (104 km) |
| Impact Tier | minor |
| Date | 2026-05-18 — time not reported by the source |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.46e04ad442e2d1f2c2f6ac28495099d6 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Cheboygan, MI; Presque Isle, MI; Crawford, MI; Otsego, MI |
| Headline | Severe Thunderstorm Warning issued May 18 at 2:48PM EDT until May 18 at 3:30PM EDT by NWS Gaylord MI |
| Expires | 2026-05-18T15:30:00-04:00 |
| SenderName | NWS Gaylord MI |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.46e04ad442e2d1f2c2f6ac28495099d6c73bb5e5.001.1","noaa_urn:oid:2.49.0.1.840.0.49a65bbb57076c85af98730a3d1fc569028206b8.001.1"] |
| Iem TypeSummary | R |
| Iem Magnitude | 1.18 |
| Iem Unit | Inch |
| Iem City | 1 N Clarion |
| Iem County | Emmet |
| Iem State | MI |
| Iem Wfo | APX |
| Iem Remark | Mesonet station EW3521 Harbor Springs. |
| MergedSources | [{"id":"iem_R_45.410_-84.670_1779120600000","source":"iem","severity":"low","severityValue":25,"timestamp":1779120600000,"latitude":45.41,"longitude":-84.67},{"id":"iem_H_45.030_-84.780_1779127920000","source":"iem","severity":"low","severityValue":25,"timestamp":1779127920000,"latitude":45.03,"longitude":-84.78},{"id":"iem_R_45.070_-83.570_1779119640000","source":"iem","severity":"low","severityValue":25,"timestamp":1779119640000,"latitude":45.07,"longitude":-83.57},{"id":"iem_R_45.480_-84.930_1779120000000","source":"iem","severity":"low","severityValue":25,"timestamp":1779120000000,"latitude":45.48,"longitude":-84.93},{"id":"iem_R_45.570_-84.800_1779119640000","source":"iem","severity":"low","severityValue":25,"timestamp":1779119640000,"latitude":45.57,"longitude":-84.8},{"id":"iem_R_45.300_-84.900_1779120000000","source":"iem","severity":"low","severityValue":25,"timestamp":1779120000000,"latitude":45.3,"longitude":-84.9}] |
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 in this area?
Calamity.live data shows a weather event with CalamityScore 22/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.