Right now
The most recent data we hold from NOAA arrived 16 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 28 July 2026 at 00:45 UTC. It is kept here as a record.
It is the 3rd strongest of the 59 detections recorded within 20 km of this point since 12 March 2026. Another comparable one was recorded here earlier the same day. 8 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 27 at 8:38PM EDT until July 27 at 8:45PM EDT by NWS Louisville KY
Urban PEI: 144,892 within a heuristic 50 km radius; not unique people.
Nearby, since 12 March 2026
- June 10, 2026 · score 37 · 2.6 km
- June 17, 2026 · score 43 · 2.9 km
- June 17, 2026 · score 63 · 7.6 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 43 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
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) | 43 / 100 |
| Legacy data-support index | 0.81/1 |
| Coordinates | 39.4132, -86.9529 |
| Nearest City | Terre Haute (40 km) |
| Urban exposure index (PEI) | 144.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-28T00:38:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.50cf815db57e8da34510b70dc3f3fde6 |
Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-07-28T00:38:00.000Z.
First archived: 2026-07-28T00:41:29.404Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Clark, IN; Jefferson, IN; Scott, IN; Trimble, KY; Knox, IN; Sullivan, IN; Clark, IN; Jefferson, IN; Henry, KY; Oldham, KY; Trimble, KY and 4 more areas |
| Headline | Severe Thunderstorm Warning issued July 27 at 8:38PM EDT until July 27 at 8:45PM EDT by NWS Louisville KY |
| Expires | 2026-07-27T20:45:00-04:00 |
| SenderName | NWS Louisville KY |
| HasExactCoords | true |
| MergedCount | 8 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.50cf815db57e8da34510b70dc3f3fde677a9f41c.001.1","noaa_urn:oid:2.49.0.1.840.0.4d4474da87d35f89e3ba79f4103f4f6a0beea3f8.002.1","noaa_urn:oid:2.49.0.1.840.0.273f492bb231612f947b58801e5283b9e2a21d0b.001.1","noaa_urn:oid:2.49.0.1.840.0.80955af6a82720532c1e0ae93acc53db15ff28ae.001.1","noaa_urn:oid:2.49.0.1.840.0.97c66cfbd0d01e21b384f4a891e234d7d261492b.001.1","noaa_urn:oid:2.49.0.1.840.0.70d5521fa2330829c3697458d4c67270c44c2f6f.002.1","noaa_urn:oid:2.49.0.1.840.0.1932ccbad094952ba51e0513f25636cc6505860a.001.1","noaa_urn:oid:2.49.0.1.840.0.012e0c96a56497085b88f473a287436ae9864e55.001.1"] |
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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