Right now
The most recent data we hold from NOAA arrived 7 hours ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
3 other detections within 20 km in the last 24 hours, the nearest <1 km from here.
This alert expired on 13 September 2026 at 21:00 UTC. It is kept here as a record.
It is the 38th strongest of the 124 detections recorded within 20 km of this point since 17 March 2026. The last comparable one was on 4 September 2026. 26 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 13 at 4:13PM EDT until September 13 at 5:00PM EDT by NWS Cleveland OH
Urban PEI: 249,035 within a heuristic 50 km radius; not unique people.
Nearby, since 17 March 2026
- September 13, 2026 · score 37 · 0.9 km
- September 3, 2026 · score 49 · 11.5 km
- May 9, 2026 · score 43 · 11.8 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 v4. 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 | 0.81/1 |
| Coordinates | 41.1419, -80.7311 |
| Nearest City | Austintown (5 km) |
| Urban exposure index (PEI) | 249.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-13T20:13:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.6194dd1e7740723c6b40ef75416f310b478a7d52.001.1 |
Physical priority index · v4 (historical). 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: 2026-09-13T20:13:00.000Z.
First archived: 2026-09-13T20:17:49.244Z. 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 | Ashtabula, OH; Trumbull, OH; Crawford, PA; Stark, OH |
| Headline | Severe Thunderstorm Warning issued September 13 at 4:13PM EDT until September 13 at 5:00PM EDT by NWS Cleveland OH |
| Expires | 2026-09-13T17:00:00-04:00 |
| SenderName | NWS Cleveland OH |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.6194dd1e7740723c6b40ef75416f310b478a7d52.001.1","noaa_urn:oid:2.49.0.1.840.0.91e060f643f046577e04b68d88a9d3b121658f8b.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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