This alert expired on 19 May 2026 at 20:49 UTC. It is kept here as a record.
It is the 8th strongest of the 79 detections recorded within 20 km of this point since 16 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: Severe Thunderstorm Warning issued May 19 at 4:39PM EDT until May 19 at 4:45PM EDT by NWS Northern Indiana
An estimated 1,210,065 people live within 50 km of this point.
Nearby, since 16 March 2026
- August 27, 2026 · score 46 · 2.2 km
- August 1, 2026 · score 76 · 8.5 km
- March 16, 2026 · score 52 · 10.5 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 79 % 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 | 79% |
| Coordinates | 39.5147, -86.4247 |
| Nearest City | Plainfield (21 km) |
| Population Exposed | 1.2M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-19T20:39:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.766cbc53fcc9e30c4943dda84fcb94fc |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Grant, IN; Hendricks, IN; Marion, IN; Spencer, IN and 1 more areas |
| Headline | Severe Thunderstorm Warning issued May 19 at 4:39PM EDT until May 19 at 4:45PM EDT by NWS Northern Indiana |
| Expires | 2026-05-19T16:49:00-04:00 |
| SenderName | NWS Northern Indiana |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.766cbc53fcc9e30c4943dda84fcb94fcddc56a65.001.1","noaa_urn:oid:2.49.0.1.840.0.b1a102251d3346d2735ff379355f66ed120a1e7c.001.1","noaa_urn:oid:2.49.0.1.840.0.64935c546e71d62d10ed92639da5cccb0ced24a7.001.1","noaa_urn:oid:2.49.0.1.840.0.b6ed97506fd679dfe9eeb625829dd3c070a096f8.001.1"] |
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.
Calamity.live data shows a weather event with CalamityScore 52/100, near Plainfield (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.