Right now
The most recent data we hold from NOAA arrived 4 minutes 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 26 May 2026 at 19:30 UTC. It is kept here as a record.
It is the 2nd strongest of the 137 detections recorded within 20 km of this point since 22 March 2026. The last comparable one was on 20 May 2026. 8 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flood Warning issued May 26 at 5:16AM EDT until May 27 at 2:00AM EDT by NWS Cleveland OH
An estimated 1,329,731 people live within 50 km of this point.
Nearby, since 22 March 2026
- May 26, 2026 · score 52 · 0.0 km
- July 10, 2026 · score 52 · 3.2 km
- July 10, 2026 · score 52 · 7.2 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 52 out of 100, at 80 % 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) | 52 / 100 |
| Our confidence | 80% |
| Coordinates | 40.2839, -82.7198 |
| Nearest City | Mount Vernon (23 km) |
| Population Exposed | 1.3M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-26T09:16:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flood Warning_noaa_urn:oid:2.49.0.1.840.0.9a0653016027b1c0e839cc633612a55f |
Score Breakdown
Technical Details
| Event | Flood Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Holmes, OH; Wayne, OH; Delaware, OH; Marion, OH; Pickaway, OH |
| Headline | Flood Warning issued May 26 at 5:16AM EDT until May 27 at 2:00AM EDT by NWS Cleveland OH |
| Expires | 2026-05-26T15:30:00-04:00 |
| SenderName | NWS Cleveland OH |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.9a0653016027b1c0e839cc633612a55f91450686.001.1","noaa_urn:oid:2.49.0.1.840.0.f981533fe7499b5eae2e84992e4eb698ec8b525c.001.1","noaa_urn:oid:2.49.0.1.840.0.acbf451309c1ff3ba20aa653c1e7b4b26b1df14d.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 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.
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