This alert expired on 3 July 2026 at 22:45 UTC. It is kept here as a record.
It is the 4th strongest of the 23 detections recorded within 20 km of this point since 15 April 2026. 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 July 3 at 6:06PM EDT until July 3 at 6:45PM EDT by NWS Grand Rapids MI
An estimated 705,769 people live within 50 km of this point.
Nearby, since 15 April 2026
- June 10, 2026 · score 37 · 20.5 km
- May 18, 2026 · score 52 · 20.5 km
How we know
Confirmed by 3 independent sources, including NOAA.
Our own score for this event is 48 out of 100, at 86 % 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) | 48 / 100 |
| Our confidence | 86% |
| Coordinates | 42.4211, -83.9153 |
| Nearest City | Ann Arbor (21 km) |
| Population Exposed | 705.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-03T22:06:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.3d02bbb3859446f33868dfc94a14042f |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Clinton, MI; Ingham, MI; Lenawee, MI; Washtenaw, MI; Monroe, MI; Wayne, MI and 1 more areas |
| Headline | Severe Thunderstorm Warning issued July 3 at 6:06PM EDT until July 3 at 6:45PM EDT by NWS Grand Rapids MI |
| Expires | 2026-07-03T18:45:00-04:00 |
| SenderName | NWS Grand Rapids MI |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.3d02bbb3859446f33868dfc94a14042f5a2808bd.001.1","noaa_urn:oid:2.49.0.1.840.0.d629bb7feefa8c7992b799f175fa14a5085ea88b.001.1","noaa_urn:oid:2.49.0.1.840.0.86767a674e20286a3f038e8b5b8a7c2ee63f3ec4.001.1","noaa_urn:oid:2.49.0.1.840.0.355281db69e7b9f9e0cc23133f290eedb72243d7.001.1"] |
| Iem TypeSummary | D |
| Iem City | 1 NE Moscow |
| Iem County | Hillsdale |
| Iem State | MI |
| Iem Wfo | IWX |
| Iem Remark | Large tree uprooted onto Bibbins Road northeast of Moscow. |
| MergedSources | [{"id":"iem_G_42.050_-84.510_1783113600000","source":"iem","severity":"low","severityValue":25,"timestamp":1783113600000,"latitude":42.05,"longitude":-84.51},{"id":"iem_D_42.060_-84.500_1783113600000","source":"iem","severity":"low","severityValue":25,"timestamp":1783113600000,"latitude":42.06,"longitude":-84.5}] |
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 48/100, near Ann Arbor (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.