Right now
The most recent data we hold from NOAA arrived 1 minute 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 19:30 UTC. It is kept here as a record.
No stronger detection stands among the 32 recorded within 20 km of this point since 12 March 2026 — 3 others scored the same. Another comparable one was recorded here earlier the same day. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 18 at 3:08PM EDT until May 18 at 3:30PM EDT by NWS Indianapolis IN
An estimated 51,589 people live within 50 km of this point.
Nearby, since 12 March 2026
- May 18, 2026 · score 39 · 0.5 km
- March 13, 2026 · score 39 · 5.3 km
- March 12, 2026 · score 39 · 5.9 km
How we know
Confirmed by 3 independent sources, including NOAA.
Our own score for this event is 39 out of 100, at 89 % 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) | 39 / 100 |
| Our confidence | 89% |
| Coordinates | 41.9586, -84.9293 |
| Nearest City | Battle Creek (45 km) |
| Population Exposed | 51.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-18T19:08:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.dae420511253716a7f2b0607d0e7d22d |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Delaware, IN; Hamilton, IN; Hancock, IN; Madison, IN; Marion, IN; Noble, IN; Clinton, MI; Gratiot, MI; Ingham, MI; Isabella, MI; Jackson, MI and 6 more areas |
| Headline | Severe Thunderstorm Warning issued May 18 at 3:08PM EDT until May 18 at 3:30PM EDT by NWS Indianapolis IN |
| Expires | 2026-05-18T15:30:00-04:00 |
| SenderName | NWS Indianapolis IN |
| HasExactCoords | true |
| MergedCount | 9 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.dae420511253716a7f2b0607d0e7d22d48f24fa5.001.1","noaa_urn:oid:2.49.0.1.840.0.7594061f4f29166e30d77c284e7a6ad7f8c3d11b.001.1","noaa_urn:oid:2.49.0.1.840.0.b0852a13aac14ba88a8d5436390470bef4de704e.001.1","noaa_urn:oid:2.49.0.1.840.0.792322f3476ab8f5ce97bac6e7afa995eee3ada6.001.1","noaa_urn:oid:2.49.0.1.840.0.106aae861a0a97df17f9a259494bc954183cb05f.001.1","noaa_urn:oid:2.49.0.1.840.0.4bfe7b0715117e485bc9a0496754f2bc535ff174.001.1","noaa_urn:oid:2.49.0.1.840.0.8a5a655881633cdd6ba048ce5bb96c8a6305a436.002.1","noaa_urn:oid:2.49.0.1.840.0.4a9d626a3a4bb565000d6284685ca04208e1236b.001.1","noaa_urn:oid:2.49.0.1.840.0.38761da7832ef64e3a8901fba69260f6b4a44c01.001.1"] |
| Iem TypeSummary | D |
| Iem City | 4 NE Constantine |
| Iem County | St. Joseph |
| Iem State | MI |
| Iem Wfo | IWX |
| Iem Remark | Emergency Manager reports powerlines and power pole down near Freese Road and Roys Road to the northeast of Constantine in St. Joseph County in Michigan. Time estimated from radar. |
| MergedSources | [{"id":"iem_G_42.230_-85.550_1779128400000","source":"iem","severity":"low","severityValue":25,"timestamp":1779128400000,"latitude":42.23,"longitude":-85.55},{"id":"iem_D_41.880_-85.620_1779125700000","source":"iem","severity":"low","severityValue":25,"timestamp":1779125700000,"latitude":41.88,"longitude":-85.62}] |
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 39/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.