This alert expired on 12 August 2026 at 18:00 UTC. It is kept here as a record.
It is the 48th strongest of the 361 detections recorded within 20 km of this point since 10 March 2026. Another comparable one was recorded here earlier the same day. 122 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flood Warning issued August 12 at 11:04AM EDT until August 12 at 2:00PM EDT by NWS Wilmington OH
An estimated 1,527,188 people live within 50 km of this point.
Nearby, since 10 March 2026
- August 11, 2026 · score 52 · 7.2 km
- June 10, 2026 · score 46 · 7.6 km
- August 13, 2026 · score 52 · 8.1 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.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 52 / 100 |
| Our confidence | 80% |
| Coordinates | 39.7590, -85.8770 |
| Nearest City | Greenfield (10 km) |
| Population Exposed | 1.5M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-13T23:04:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flood Warning_noaa_urn:oid:2.49.0.1.840.0.b397db30ea1e0d0ece6ea6b329a038c6 |
Score Breakdown
Technical Details
| Event | Flood Warning |
| Urgency | Expected |
| Certainty | Likely |
| AreaDesc | Gallatin, KY; Owen, KY; Hamilton, IN; Marion, IN; Marion, IN; Morgan, IN and 18 more areas |
| Headline | Flood Warning issued August 12 at 11:04AM EDT until August 12 at 2:00PM EDT by NWS Wilmington OH |
| Expires | 2026-08-12T14:00:00-04:00 |
| SenderName | NWS Wilmington OH |
| HasExactCoords | true |
| MergedCount | 22 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.b397db30ea1e0d0ece6ea6b329a038c6c838f554.001.1","noaa_urn:oid:2.49.0.1.840.0.25f77f9d3beecd73acf0fe5f82977ac3ce4d92bc.001.1","noaa_urn:oid:2.49.0.1.840.0.25f77f9d3beecd73acf0fe5f82977ac3ce4d92bc.003.1","noaa_urn:oid:2.49.0.1.840.0.25f77f9d3beecd73acf0fe5f82977ac3ce4d92bc.002.1","noaa_urn:oid:2.49.0.1.840.0.25f77f9d3beecd73acf0fe5f82977ac3ce4d92bc.005.1","noaa_urn:oid:2.49.0.1.840.0.25f77f9d3beecd73acf0fe5f82977ac3ce4d92bc.004.1","noaa_urn:oid:2.49.0.1.840.0.9805e9b2f56c230e18d60ba110581f734dd2d1db.005.1","noaa_urn:oid:2.49.0.1.840.0.9805e9b2f56c230e18d60ba110581f734dd2d1db.002.1","noaa_urn:oid:2.49.0.1.840.0.9805e9b2f56c230e18d60ba110581f734dd2d1db.004.1","noaa_urn:oid:2.49.0.1.840.0.9805e9b2f56c230e18d60ba110581f734dd2d1db.006.1","noaa_urn:oid:2.49.0.1.840.0.9805e9b2f56c230e18d60ba110581f734dd2d1db.001.1","noaa_urn:oid:2.49.0.1.840.0.9805e9b2f56c230e18d60ba110581f734dd2d1db.003.1","noaa_urn:oid:2.49.0.1.840.0.bb82a3b3ba11037cc325d270512afefc037b2a7c.001.1","noaa_urn:oid:2.49.0.1.840.0.2478cc44945ee459b4b8e909d4dda5d02c66d633.001.1","noaa_urn:oid:2.49.0.1.840.0.3d7f1650e02386f2b12e6d2bc04afba5113753e2.001.1","noaa_urn:oid:2.49.0.1.840.0.ef3ae4ebf77a55f26683c058cbad4717cee283e6.001.1","noaa_urn:oid:2.49.0.1.840.0.fc4cdd9c74d70c10d91f7501211e92d36713e54d.001.1","noaa_urn:oid:2.49.0.1.840.0.d28ef3413b6f53851ea9f042d0d9ef4748011c44.002.1","noaa_urn:oid:2.49.0.1.840.0.d28ef3413b6f53851ea9f042d0d9ef4748011c44.003.1","noaa_urn:oid:2.49.0.1.840.0.d28ef3413b6f53851ea9f042d0d9ef4748011c44.001.1","noaa_urn:oid:2.49.0.1.840.0.d1ba602cdabfb44b1d993403307e2b1c1b4fe0d8.001.1","noaa_urn:oid:2.49.0.1.840.0.8ea15b37252fa7ae4583227f4e9ebbf3fc43d598.001.1"] |
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.
Want to know when something happens near Greenfield?
Calamity.live data shows a weather event with CalamityScore 52/100, near Greenfield (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.