This alert expired on 18 May 2026 at 19:30 UTC. It is kept here as a record.
No stronger detection stands among the 28 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. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 18 at 3:10PM EDT until May 18 at 3:30PM EDT by NWS Northern Indiana
An estimated 51,589 people live within 50 km of this point.
Nearby, since 12 March 2026
- March 13, 2026 · score 39 · 5.3 km
- March 12, 2026 · score 39 · 6.4 km
- March 16, 2026 · score 22 · 14.6 km
How we know
Confirmed by 6 independent sources, including NOAA.
Our own score for this event is 39 out of 100, at 90 % 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) | 39 / 100 |
| Our confidence | 90% |
| Coordinates | 41.9565, -84.9243 |
| Nearest City | Battle Creek (46 km) |
| Population Exposed | 51.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-18T19:10:00.000Z |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Steuben, IN; Branch, MI; Wayne, MI; Clinton, MI; Eaton, MI; Ingham, MI; Ionia, MI and 6 more areas |
| Headline | Severe Thunderstorm Warning issued May 18 at 3:10PM EDT until May 18 at 3:30PM EDT by NWS Northern Indiana |
| Expires | 2026-05-18T15:30:00-04:00 |
| SenderName | NWS Northern Indiana |
| HasExactCoords | true |
| MergedCount | 9 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.665decae93f276a3d8f881481ebd02637f77b441.002.1","noaa_urn:oid:2.49.0.1.840.0.35dbfa4b0464d926bb1a3d529c0cb21ca468fee3.001.1","noaa_urn:oid:2.49.0.1.840.0.e8749a147a02a5c3384e5b67520cc03231c8b89e.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:2.49.0.1.840.0.4bfe7b0715117e485bc9a0496754f2bc535ff174.001.1","noaa_urn:oid:2.49.0.1.840.0.38761da7832ef64e3a8901fba69260f6b4a44c01.001.1","noaa_urn:oid:2.49.0.1.840.0.dae420511253716a7f2b0607d0e7d22d48f24fa5.001.1"] |
| Iem TypeSummary | G |
| Iem Magnitude | 74 |
| Iem Unit | MPH |
| Iem City | 1 SSW Springfield |
| Iem County | Calhoun |
| Iem State | MI |
| Iem Wfo | GRR |
| Iem Remark | Battle Creek ASOS. |
| MergedSources | [{"id":"iem_D_42.000_-85.330_1779130200000","source":"iem","severity":"low","severityValue":25,"timestamp":1779130200000,"latitude":42,"longitude":-85.33},{"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},{"id":"iem_D_42.310_-85.640_1779127920000","source":"iem","severity":"low","severityValue":25,"timestamp":1779127920000,"latitude":42.31,"longitude":-85.64},{"id":"iem_G_42.310_-85.240_1779129840000","source":"iem","severity":"low","severityValue":25,"timestamp":1779129840000,"latitude":42.31,"longitude":-85.24}] |
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 39/100, near Battle Creek (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.