Calamity
MediumSevere WeatherCalamity Score: 34

Severe Weather in United States

MercerUnited StatesNOAA

Right now

The most recent data we hold from NOAA arrived 1 minute ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.

7 other detections within 20 km in the last 24 hours, the nearest 15 km from here.

This alert expired on 19 May 2026 at 21:06 UTC. It is kept here as a record.

It is the 9th strongest of the 32 detections recorded within 20 km of this point since 22 March 2026. The last comparable one was on 28 April 2026.

What the source measured

NOAA reported: Severe Thunderstorm Warning issued May 19 at 4:57PM EDT until May 19 at 5:00PM EDT by NWS Indianapolis IN

An estimated 15,709 people live within 50 km of this point.

Nearby, since 22 March 2026

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

TypeSevere Weather
SeverityMedium
Calamity Score (ours)34 / 100
Our confidence79%
Coordinates40.6927, -84.7178
Nearest CityNew Haven (49 km)
Population Exposed15.7K within 50 km
Impact Tiersignificant
Timestamp2026-05-19T20:57:00.000Z
Sourcehttps://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.601b375cd8f63270206cbde0935d41bc

Score Breakdown

35
intensity
40
population
0
cascading
80
historical

Technical Details

EventSevere Thunderstorm Warning
UrgencyImmediate
CertaintyObserved
AreaDescHendricks, IN; Marion, IN; Spencer, IN; Hamilton, IN; Marion, IN and 6 more areas
HeadlineSevere Thunderstorm Warning issued May 19 at 4:57PM EDT until May 19 at 5:00PM EDT by NWS Indianapolis IN
Expires2026-05-19T17:06:00-04:00
SenderNameNWS Indianapolis IN
HasExactCoordstrue
MergedCount9
MergedIds["noaa_urn:oid:2.49.0.1.840.0.601b375cd8f63270206cbde0935d41bcefefdcff.001.1","noaa_urn:oid:2.49.0.1.840.0.6cd82d592f13e552970ee645e5d63132a3223322.001.1","noaa_urn:oid:2.49.0.1.840.0.86b228771d40b76cd0378a17be3fd8d090b9d5f2.001.1","noaa_urn:oid:2.49.0.1.840.0.695399759743cf59c22ef43d7de5a10cb01f70cf.001.1","noaa_urn:oid:2.49.0.1.840.0.0bf954d9a2bb8120781972fb031511d6bd508955.001.1","noaa_urn:oid:2.49.0.1.840.0.ac4b1e360d21333481f0101e9279470ceb3db860.001.1","noaa_urn:oid:2.49.0.1.840.0.9c854c4e2f8b6bc0830c1883afc49f8d77d7277c.001.1","noaa_urn:oid:2.49.0.1.840.0.d6c406057468278f2a61fb24dced1dd388c917c7.001.1","noaa_urn:oid:2.49.0.1.840.0.db4cba028330897ca73ddeec578ed9db69a0204c.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 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.

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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.