This alert expired on 4 September 2026 at 02:00 UTC. It is kept here as a record.
It is the 79th strongest of the 114 detections recorded within 20 km of this point since 27 March 2026. The last comparable one was on 3 September 2026.
What the source measured
NOAA reported: Severe Thunderstorm Watch issued September 3 at 8:25PM EDT until September 3 at 10:00PM EDT by NWS Pittsburgh PA
An estimated 1,247,659 people live within 50 km of this point.
Nearby, since 27 March 2026
- September 4, 2026 · score 46 · 0.0 km
- September 3, 2026 · score 46 · 0.0 km
- September 2, 2026 · score 46 · 0.0 km
How we know
Confirmed by 3 independent sources, including NOAA.
Our own score for this event is 46 out of 100, at 92 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
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) | 46 / 100 |
| Our confidence | 92% |
| Coordinates | 40.4000, -82.9000 |
| Nearest City | Delaware (18 km) |
| Population Exposed | 1.2M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-04T00:25:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.9b52f8aec8cd05d668ea0286aa39cf4171520b6b.002.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Watch |
| Urgency | Future |
| Certainty | Possible |
| AreaDesc | Belmont, OH; Guernsey, OH; Harrison, OH; Jefferson, OH; Monroe, OH; Muskingum, OH; Noble, OH; Allegheny, PA; Fayette, PA; Greene, PA; Washington, PA; Westmoreland, PA; Brooke, WV; Hancock, WV; Marion, WV; Marshall, WV; Monongalia, WV; Ohio, WV; Preston, WV; Tucker, WV; Wetzel, WV; Delaware, OH; Licking, OH; Morgan, OH; Perry, OH; Washington, OH; Barbour, WV; Doddridge, WV; Harrison, WV; Pleasants, WV; Taylor, WV; Tyler, WV |
| Headline | Severe Thunderstorm Watch issued September 3 at 8:25PM EDT until September 3 at 10:00PM EDT by NWS Pittsburgh PA |
| Expires | 2026-09-03T22:00:00-04:00 |
| SenderName | NWS Pittsburgh PA |
| HasExactCoords | false |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.9b52f8aec8cd05d668ea0286aa39cf4171520b6b.002.1","noaa_urn:oid:2.49.0.1.840.0.d492255fed7ccabcfd31339ee44403b397fd1cd2.001.1","noaa_urn:oid:2.49.0.1.840.0.3b6435c2576b3f0b4d4f26fd375b9c14dbf09545.001.1"] |
| Spc ReportType | wind |
| Spc Speed | UNK |
| Spc Location | 1 NE Galion |
| Spc County | Crawford |
| Spc State | OH |
| Spc Comments | Several trees down in the Galion area. (CLE) |
| Iem TypeSummary | D |
| Iem City | 1 NE Galion |
| Iem County | Crawford |
| Iem State | OH |
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 near Delaware?
Calamity.live data shows a weather event with CalamityScore 46/100, near Delaware (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.