This alert expired on 2 August 2026 at 00:45 UTC. It is kept here as a record.
No stronger detection stands among the 190 recorded within 20 km of this point since 15 March 2026 — 60 others scored the same. 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: Flash Flood Warning issued August 1 at 7:23PM EDT until August 1 at 8:45PM EDT by NWS Indianapolis IN
An estimated 1,370,832 people live within 50 km of this point.
Nearby, since 15 March 2026
- August 1, 2026 · score 52 · 6.5 km
- August 12, 2026 · score 52 · 9.4 km
- August 13, 2026 · score 52 · 14.8 km
How we know
Confirmed by 18 independent sources, including NOAA.
Our own score for this event is 52 out of 100, at 91 % 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 | 91% |
| Coordinates | 39.6937, -85.7263 |
| Nearest City | Greenfield (11 km) |
| Population Exposed | 1.4M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-01T23:23:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.25d22c098cf177bd48ddd4b46e08b4cb |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Shelby, IN; Marion, IN; Fayette, IN; Franklin, IN; Union, IN; Wayne, IN |
| Headline | Flash Flood Warning issued August 1 at 7:23PM EDT until August 1 at 8:45PM EDT by NWS Indianapolis IN |
| Expires | 2026-08-01T20:45:00-04:00 |
| SenderName | NWS Indianapolis IN |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.25d22c098cf177bd48ddd4b46e08b4cbcfe570df.001.1","noaa_urn:oid:2.49.0.1.840.0.11ab6a7d3c1e8172a1aeaf4c2b367537bc654cf7.001.1","noaa_urn:oid:2.49.0.1.840.0.b09fd6e7238eff9d2e50bfcb0afb1107c4a3cb57.001.1"] |
| Iem TypeSummary | E |
| Iem City | 1 SW Beech Grove |
| Iem County | Marion |
| Iem State | IN |
| Iem Wfo | IND |
| Iem Remark | High water on parts of the interstates including Interstate 65 north bound near Interstate 465..traffic able to get through. |
| MergedSources | [{"id":"iem_R_39.590_-86.480_1785612900000","source":"iem","severity":"low","severityValue":25,"timestamp":1785612900000,"latitude":39.59,"longitude":-86.48},{"id":"iem_R_39.590_-86.480_1785620100000","source":"iem","severity":"low","severityValue":25,"timestamp":1785620100000,"latitude":39.59,"longitude":-86.48},{"id":"iem_R_39.720_-85.890_1785619260000","source":"iem","severity":"low","severityValue":25,"timestamp":1785619260000,"latitude":39.72,"longitude":-85.89},{"id":"iem_R_39.540_-86.360_1785621480000","source":"iem","severity":"low","severityValue":25,"timestamp":1785621480000,"latitude":39.54,"longitude":-86.36},{"id":"iem_R_39.910_-86.120_1785621600000","source":"iem","severity":"low","severityValue":25,"timestamp":1785621600000,"latitude":39.91,"longitude":-86.12},{"id":"iem_R_39.730_-86.160_1785621600000","source":"iem","severity":"low","severityValue":25,"timestamp":1785621600000,"latitude":39.73,"longitude":-86.16},{"id":"iem_D_39.210_-86.240_1785614040000","source":"iem","severity":"low","severityValue":25,"timestamp":1785614040000,"latitude":39.21,"longitude":-86.24},{"id":"iem_R_39.350_-85.970_1785616620000","source":"iem","severity":"low","severityValue":25,"timestamp":1785616620000,"latitude":39.35,"longitude":-85.97},{"id":"iem_R_39.700_-86.410_1785618000000","source":"iem","severity":"low","severityValue":25,"timestamp":1785618000000,"latitude":39.7,"longitude":-86.41},{"id":"iem_R_39.350_-85.970_1785618300000","source":"iem","severity":"low","severityValue":25,"timestamp":1785618300000,"latitude":39.35,"longitude":-85.97},{"id":"iem_E_39.800_-86.030_1785622380000","source":"iem","severity":"low","severityValue":25,"timestamp":1785622380000,"latitude":39.8,"longitude":-86.03},{"id":"iem_E_39.750_-86.150_1785621300000","source":"iem","severity":"low","severityValue":25,"timestamp":1785621300000,"latitude":39.75,"longitude":-86.15},{"id":"iem_E_39.510_-85.780_1785618660000","source":"iem","severity":"low","severityValue":25,"timestamp":1785618660000,"latitude":39.51,"longitude":-85.78},{"id":"iem_E_39.570_-85.460_1785622440000","source":"iem","severity":"low","severityValue":25,"timestamp":1785622440000,"latitude":39.57,"longitude":-85.46},{"id":"iem_R_39.670_-86.130_1785621180000","source":"iem","severity":"low","severityValue":25,"timestamp":1785621180000,"latitude":39.67,"longitude":-86.13},{"id":"iem_E_39.780_-86.380_1785621300000","source":"iem","severity":"low","severityValue":25,"timestamp":1785621300000,"latitude":39.78,"longitude":-86.38},{"id":"iem_E_39.700_-86.110_1785621060000","source":"iem","severity":"low","severityValue":25,"timestamp":1785621060000,"latitude":39.7,"longitude":-86.11}] |
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.