Right now
The most recent data we hold from NOAA arrived 3 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 21 July 2026 at 19:00 UTC. It is kept here as a record.
It is the 8th strongest of the 63 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 21 at 2:45PM EDT until July 21 at 3:00PM EDT by NWS Louisville KY
Urban PEI: 378,804 within a heuristic 50 km radius; not unique people.
Nearby, since 16 March 2026
- June 18, 2026 · score 67 · 11.8 km
- September 10, 2026 · score 37 · 16.0 km
- September 12, 2026 · score 37 · 16.2 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 37 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) | 37 / 100 |
| Legacy data-support index | 0.80/1 |
| Coordinates | 38.7218, -82.7387 |
| Nearest City | Portsmouth (23 km) |
| Urban exposure index (PEI) | 378.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-21T18:45:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.c8300301331134d5e660efb8fca13185 |
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: 2026-07-21T18:45:00.000Z.
First archived: 2026-07-21T18:48:07.624Z. 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 | Dubois, IN; Orange, IN; Pike, IN; Clark, IN; Jefferson, IN; Scott, IN; Oldham, KY; Trimble, KY and 14 more areas |
| Headline | Severe Thunderstorm Warning issued July 21 at 2:45PM EDT until July 21 at 3:00PM EDT by NWS Louisville KY |
| Expires | 2026-07-21T15:00:00-04:00 |
| SenderName | NWS Louisville KY |
| HasExactCoords | true |
| MergedCount | 17 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.c8300301331134d5e660efb8fca131851bfa901d.001.1","noaa_urn:oid:2.49.0.1.840.0.9d8a40c09bfebf4f65ed26ca12e2c2c61043f749.001.1","noaa_urn:oid:2.49.0.1.840.0.2c63e9fecec815782248469185ece150fdac70b1.001.1","noaa_urn:oid:2.49.0.1.840.0.f670e101ef5d6eb69713173cd124c22d40dc8c29.001.1","noaa_urn:oid:2.49.0.1.840.0.1c0a6963d4a5a76a66564605061bd0749e2c153e.001.1","noaa_urn:oid:2.49.0.1.840.0.209c4a6fb22aa5de83da348cddf2dc77b77910f9.001.1","noaa_urn:oid:2.49.0.1.840.0.b3340c321057245ed317565f95a3a951821bf697.002.1","noaa_urn:oid:2.49.0.1.840.0.b5a714a32b85e4007a2b4aa99a999cc3ee164454.001.1","noaa_urn:oid:2.49.0.1.840.0.964f40077530df08986f243c3edba4cd0cef6f15.001.1","noaa_urn:oid:2.49.0.1.840.0.500132d11c3907b14e13a4732e59d51626c844bd.002.1","noaa_urn:oid:2.49.0.1.840.0.14872b7675a7247011d06fffad954c337ff2b988.001.1","noaa_urn:oid:2.49.0.1.840.0.b384f57a08cbf8ac09494632f12b533455218d01.001.1","noaa_urn:oid:2.49.0.1.840.0.52230450343f7d838467f7340696fcdebcb0aa91.001.1","noaa_urn:oid:2.49.0.1.840.0.88b59e3b7fa78616381e0bfad85c15a33db44564.001.1","noaa_urn:oid:2.49.0.1.840.0.238094bce29e0e3e5678e969bc235b6134ad0f96.001.1","noaa_urn:oid:2.49.0.1.840.0.c0a3a2809da805f560933ea76935cb17d7f7f534.001.1","noaa_urn:oid:2.49.0.1.840.0.baaa658413764fe35e7ff358c3a968bf2acf4bfc.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.
Review the area, threshold and delivery channel in your account.
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