This alert expired on 16 March 2026 at 21:15 UTC. It is kept here as a record.
It is the 5th strongest of the 30 detections recorded within 20 km of this point since 12 March 2026. Another comparable one was recorded here earlier the same day. 10 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flood Warning issued March 15 at 3:07PM EDT until March 19 at 8:00AM EDT by NWS Grand Rapids MI
Nearby, since 12 March 2026
- March 16, 2026 · score 22 · 0.0 km
- March 15, 2026 · score 22 · 7.0 km
- March 14, 2026 · score 22 · 7.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 22 out of 100, at 57 % 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) | 22 / 100 |
| Our confidence | 57% |
| Coordinates | 41.8252, -84.9111 |
| Nearest City | Battle Creek (59 km) |
| Impact Tier | minor |
| Timestamp | 2026-03-15T19:07:00.000Z |
Score Breakdown
Technical Details
| Event | Flood Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Clinton, MI; Defiance, OH; Fulton, OH; Williams, OH; Noble, IN and 1 more areas |
| Headline | Flood Warning issued March 15 at 3:07PM EDT until March 19 at 8:00AM EDT by NWS Grand Rapids MI |
| Expires | 2026-03-16T17:15:00-04:00 |
| SenderName | NWS Grand Rapids MI |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.8ea33552376190796125d7e5892badb1fb443b64.001.1","noaa_urn:oid:2.49.0.1.840.0.e4eaa9eb099cd5d843460231328d4e067a10393f.003.1","noaa_urn:oid:2.49.0.1.840.0.e4eaa9eb099cd5d843460231328d4e067a10393f.001.1","noaa_urn:oid:2.49.0.1.840.0.e4eaa9eb099cd5d843460231328d4e067a10393f.002.1"] |
Safety Information
During flooding: never walk, swim, or drive through floodwaters. Six inches of moving water can knock you down, and one foot of water can sweep away a vehicle. Move to higher ground if waters rise. After flooding, avoid contact with floodwater which may contain sewage, chemicals, or debris. Follow local emergency service guidance.
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 22/100, near Battle Creek (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.