Right now
The most recent data we hold from NOAA arrived 2 hours ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
One other detection within 20 km in the last 24 hours, 19 km from here.
This alert expired on 13 May 2026 at 19:00 UTC. It is kept here as a record.
It is the 7th strongest of the 35 detections recorded within 20 km of this point since 17 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 May 13 at 2:25PM EDT until May 13 at 3:00PM EDT by NWS Pittsburgh PA
Nearby, since 17 March 2026
- June 20, 2026 · score 22 · 5.8 km
- June 21, 2026 · score 22 · 5.9 km
- August 8, 2026 · score 22 · 14.4 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 22 out of 100, at 66 % 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
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 22 / 100 |
| Our confidence | 66% |
| Coordinates | 41.4180, -79.1645 |
| Nearest City | Jamestown (76 km) |
| Impact Tier | minor |
| Timestamp | 2026-05-13T18:25:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.069c117d2b26e08e27502c8fdac13436 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Belmont, OH; Jefferson, OH; Washington, PA; Brooke, WV; Ohio, WV; Clarion, PA; Forest, PA; Jefferson, PA; Armstrong, PA; Butler, PA; Clarion, PA; Jefferson, PA and 2 more areas |
| Headline | Severe Thunderstorm Warning issued May 13 at 2:25PM EDT until May 13 at 3:00PM EDT by NWS Pittsburgh PA |
| Expires | 2026-05-13T15:00:00-04:00 |
| SenderName | NWS Pittsburgh PA |
| HasExactCoords | true |
| MergedCount | 5 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.069c117d2b26e08e27502c8fdac13436be4e51f1.001.1","noaa_urn:oid:2.49.0.1.840.0.c4bc6aa3592504fd719aa9024d07733c1af9dd32.002.1","noaa_urn:oid:2.49.0.1.840.0.bcc61b8614e6fec05c28dc77a87173734df0c47e.001.1","noaa_urn:oid:2.49.0.1.840.0.722c8cf982007448de10d68474c6dea2ff512476.001.1","noaa_urn:oid:2.49.0.1.840.0.9daf29cf3f15e97600a579e70747d34df5c5ab2f.001.1"] |
| Iem TypeSummary | H |
| Iem Magnitude | 1 |
| Iem Unit | Inch |
| Iem City | 1 NE Franklin |
| Iem County | Venango |
| Iem State | PA |
| Iem Wfo | PBZ |
| MergedSources | [{"id":"iem_H_41.400_-79.830_1778694600000","source":"iem","severity":"low","severityValue":25,"timestamp":1778694600000,"latitude":41.4,"longitude":-79.83}] |
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.
Want to know when something happens in this area?