This alert expired on 11 August 2026 at 19:30 UTC. It is kept here as a record.
No stronger detection stands among the 153 recorded within 20 km of this point since 12 March 2026 — 97 others scored the same. Another comparable one was recorded here earlier the same day. 15 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued August 11 at 2:20PM CDT until August 11 at 2:30PM CDT by NWS Chicago IL
An estimated 1,496,598 people live within 50 km of this point.
Nearby, since 12 March 2026
- August 14, 2026 · score 52 · 2.3 km
- August 15, 2026 · score 52 · 2.3 km
- August 15, 2026 · score 52 · 2.6 km
How we know
Confirmed by 5 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 | 39.8992, -85.8634 |
| Nearest City | Fishers (14 km) |
| Population Exposed | 1.5M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-11T19:20:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.1e51eb44ee15578e21740daf671a5d5b |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Ford, IL; Iroquois, IL; Fountain, IN; Tippecanoe, IN; Warren, IN; Champaign, IL; Vermilion, IL and 6 more areas |
| Headline | Severe Thunderstorm Warning issued August 11 at 2:20PM CDT until August 11 at 2:30PM CDT by NWS Chicago IL |
| Expires | 2026-08-11T14:30:00-05:00 |
| SenderName | NWS Chicago IL |
| HasExactCoords | true |
| MergedCount | 9 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.1e51eb44ee15578e21740daf671a5d5b7973e105.001.1","noaa_urn:oid:2.49.0.1.840.0.e6d37ea2e71108e991685843c6929ff1290b5a7d.001.1","noaa_urn:oid:2.49.0.1.840.0.c08130dbc351f176ca8eed9ba6eaffe2b2827ea3.001.1","noaa_urn:oid:2.49.0.1.840.0.ae086a163853dfbcb35d3acca614056dbee2434e.001.1","noaa_urn:oid:2.49.0.1.840.0.febfb47e688e4c899088226766c9395192ab1e78.001.1","noaa_urn:oid:2.49.0.1.840.0.f658d77532f0aa678700ff2e17b61eeeb5cd87cc.001.1","noaa_urn:oid:2.49.0.1.840.0.cf7d17d519fe26e2c18912af1026a9dcb154f345.001.1","noaa_urn:oid:2.49.0.1.840.0.4fe613effc1efd0a808e3a2c80c1188a682b6635.001.1","noaa_urn:oid:2.49.0.1.840.0.52c91aea1cd2228dcd229612eaea9965ed7b5932.001.1"] |
| Iem TypeSummary | D |
| Iem City | 3 WSW Morse Reservoir |
| Iem County | Hamilton |
| Iem State | IN |
| Iem Wfo | IND |
| Iem Remark | Large Tree down Blocking southbound lanes of US 31 near 216th Street. |
| MergedSources | [{"id":"iem_H_40.030_-86.000_1786471440000","source":"iem","severity":"low","severityValue":25,"timestamp":1786471440000,"latitude":40.03,"longitude":-86},{"id":"iem_D_39.670_-85.700_1786472700000","source":"iem","severity":"low","severityValue":25,"timestamp":1786472700000,"latitude":39.67,"longitude":-85.7},{"id":"iem_D_39.620_-85.440_1786473180000","source":"iem","severity":"low","severityValue":25,"timestamp":1786473180000,"latitude":39.62,"longitude":-85.44},{"id":"iem_D_40.100_-86.130_1786472280000","source":"iem","severity":"low","severityValue":25,"timestamp":1786472280000,"latitude":40.1,"longitude":-86.13}] |
Safety Information
Always follow official guidance from your local emergency management agency. This platform provides scientific monitoring data and is not a substitute for official warnings. If you are in immediate danger, contact your local emergency number.
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 Fishers?
Calamity.live data shows a weather event with CalamityScore 52/100, near Fishers (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.