This alert expired on 19 May 2026 at 00:15 UTC. It is kept here as a record.
It is the 5th strongest of the 60 detections recorded within 20 km of this point since 15 March 2026. Another comparable one was recorded here earlier the same day. 6 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flood Warning issued May 18 at 5:15PM EDT until May 18 at 8:15PM EDT by NWS Indianapolis IN
An estimated 18,012 people live within 50 km of this point.
Nearby, since 15 March 2026
- August 29, 2026 · score 34 · 1.7 km
- August 28, 2026 · score 34 · 1.7 km
- August 31, 2026 · score 34 · 4.1 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 34 out of 100, at 79 % 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) | 34 / 100 |
| Our confidence | 79% |
| Coordinates | 38.9732, -87.5718 |
| Nearest City | Vincennes (33 km) |
| Population Exposed | 18.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-19T10:25:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flood Warning_noaa_urn:oid:2.49.0.1.840.0.9c03a459290fe2c92f117128010859d0 |
Score Breakdown
Technical Details
| Event | Flood Warning |
| Urgency | Expected |
| Certainty | Likely |
| AreaDesc | Bartholomew, IN; Brown, IN; Daviess, IN; Greene, IN; Jackson, IN; Lawrence, IN; Martin, IN; Monroe, IN; Morgan, IN; Clay, IN; Daviess, IN; Greene, IN; Knox, IN; Martin, IN; Monroe, IN; Owen, IN; Boone, IN; Hamilton, IN; Hendricks, IN; Johnson, IN; Marion, IN; Morgan, IN and 3 more areas |
| Headline | Flood Warning issued May 18 at 5:15PM EDT until May 18 at 8:15PM EDT by NWS Indianapolis IN |
| Expires | 2026-05-18T20:15:00-04:00 |
| SenderName | NWS Indianapolis IN |
| HasExactCoords | true |
| MergedCount | 6 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.9c03a459290fe2c92f117128010859d02138578f.001.1","noaa_urn:oid:2.49.0.1.840.0.fffcdf274646718b5743d935f8dead5f0a29812f.001.1","noaa_urn:oid:2.49.0.1.840.0.d6c73c2545f101dccb1ef8455d2443b189028f91.001.1","noaa_urn:oid:2.49.0.1.840.0.cd5c59cd17de5272c58588b5d3b6e52a97e2b741.001.1","noaa_urn:oid:2.49.0.1.840.0.23ad6b3484ba74e90689f32bc7801b25eb3ed286.001.1","noaa_urn:oid:2.49.0.1.840.0.29cd00bab037b008d9fef6bf6cd0c02a0f92387e.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 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.
Want to know when something happens in this area?
Calamity.live data shows a weather event with CalamityScore 34/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.