Right now
The most recent data we hold from NOAA arrived 59 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 27 May 2026 at 17:15 UTC. It is kept here as a record.
No stronger detection stands among the 75 recorded within 20 km of this point since 13 March 2026 — 21 others scored the same. Another comparable one was recorded here earlier the same day. 7 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued May 27 at 10:12AM EDT until May 27 at 1:15PM EDT by NWS Wilmington OH
Urban PEI: 1,330,611 within a heuristic 50 km radius; not unique people.
Nearby, since 13 March 2026
- May 27, 2026 · score 52 · 0.0 km
- May 20, 2026 · score 52 · 1.9 km
- August 11, 2026 · score 52 · 7.7 km
How we know
9 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 52 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
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 |
| Legacy data-support index | 0.89/1 |
| Coordinates | 39.9136, -83.0027 |
| Nearest City | Columbus (5 km) |
| Urban exposure index (PEI) | 1.3M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-27T14:12:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.1567e1f159c66b3d9aabdf3b5803c69ddb1c516b.001.1 |
Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-05-27T14:12:00.000Z.
First archived: 2026-05-27T17:07:00.459Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Fairfield, OH; Franklin, OH; Licking, OH |
| Headline | Flash Flood Warning issued May 27 at 10:12AM EDT until May 27 at 1:15PM EDT by NWS Wilmington OH |
| Expires | 2026-05-27T13:15:00-04:00 |
| SenderName | NWS Wilmington OH |
| HasExactCoords | true |
| Iem TypeSummary | F |
| Iem City | 3 S Bexley |
| Iem County | Franklin |
| Iem State | OH |
| Iem Wfo | ILN |
| Iem Remark | Video shows rushing water at Creeksedge Apartments. |
| Google News RssFeed | weather |
| Google News SourceName | The Columbus Dispatch |
| MergedSources | [{"id":"iem_E_39.920_-83.070_1779875940000","source":"iem","severity":"low","severityValue":25,"timestamp":1779875940000,"latitude":39.92,"longitude":-83.07},{"id":"iem_F_39.950_-82.990_1779894900000","source":"iem","severity":"low","severityValue":25,"timestamp":1779894900000,"latitude":39.95,"longitude":-82.99},{"id":"iem_F_39.890_-83.030_1779893340000","source":"iem","severity":"low","severityValue":25,"timestamp":1779893340000,"latitude":39.89,"longitude":-83.03},{"id":"iem_E_39.900_-83.020_1779881400000","source":"iem","severity":"low","severityValue":25,"timestamp":1779881400000,"latitude":39.9,"longitude":-83.02},{"id":"iem_E_39.900_-83.440_1779899100000","source":"iem","severity":"low","severityValue":25,"timestamp":1779899100000,"latitude":39.9,"longitude":-83.44},{"id":"iem_F_39.930_-83.130_1779894600000","source":"iem","severity":"low","severityValue":25,"timestamp":1779894600000,"latitude":39.93,"longitude":-83.13},{"id":"iem_F_39.930_-82.930_1779894240000","source":"iem","severity":"low","severityValue":25,"timestamp":1779894240000,"latitude":39.93,"longitude":-82.93},{"id":"gnews_weather_494416_171","source":"google_news","severity":"medium","severityValue":40,"timestamp":1779898800000,"latitude":39.96,"longitude":-83}] |
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.
Review the area, threshold and delivery channel in your account.
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