This alert is in force until 4 September 2026, 02:00 UTC.
It is the 79th strongest of the 108 detections recorded within 20 km of this point since 27 March 2026. The last comparable one was on 2 September 2026.
What the source measured
NOAA reported: Severe Thunderstorm Watch issued September 3 at 3:03PM EDT until September 3 at 10:00PM EDT by NWS Charleston WV
An estimated 1,247,659 people live within 50 km of this point.
Nearby, since 27 March 2026
- September 3, 2026 · score 46 · 0.0 km
- September 2, 2026 · score 46 · 0.0 km
- August 11, 2026 · score 52 · 0.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 46 out of 100, at 81 % 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 | 81% |
| Coordinates | 40.4000, -82.9000 |
| Nearest City | Delaware (18 km) |
| Population Exposed | 1.2M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-03T19:03:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.3b6435c2576b3f0b4d4f26fd375b9c14dbf09545.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Watch |
| Urgency | Future |
| Certainty | Possible |
| AreaDesc | Morgan, OH; Perry, OH; Washington, OH; Barbour, WV; Doddridge, WV; Harrison, WV; Pleasants, WV; Taylor, WV; Tyler, WV; Belmont, OH; Carroll, OH; Columbiana, OH; Coshocton, OH; Guernsey, OH; Harrison, OH; Jefferson, OH; Monroe, OH; Muskingum, OH; Noble, OH; Tuscarawas, OH; Allegheny, PA; Armstrong, PA; Beaver, PA; Butler, PA; Clarion, PA; Fayette, PA; Forest, PA; Greene, PA; Indiana, PA; Jefferson, PA; Lawrence, PA; Mercer, PA; Venango, PA; Washington, PA; Westmoreland, PA; Brooke, WV; Hancock, WV; Marion, WV; Marshall, WV; Monongalia, WV; Ohio, WV; Preston, WV; Tucker, WV; Wetzel, WV; Ashland, OH; Ashtabula, OH; Crawford, OH; Cuyahoga, OH; Erie, OH; Geauga, OH; Hancock, OH; Holmes, OH; Huron, OH; Knox, OH; Lake, OH; Lorain, OH; Lucas, OH; Mahoning, OH; Marion, OH; Medina, OH; Morrow, OH; Ottawa, OH; Portage, OH; Richland, OH; Sandusky, OH; Seneca, OH; Stark, OH; Summit, OH; Trumbull, OH; Wayne, OH; Wood, OH; Wyandot, OH; Crawford, PA; Erie, PA |
| Headline | Severe Thunderstorm Watch issued September 3 at 3:03PM EDT until September 3 at 10:00PM EDT by NWS Charleston WV |
| Expires | 2026-09-03T22:00:00-04:00 |
| SenderName | NWS Charleston WV |
| HasExactCoords | false |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.3b6435c2576b3f0b4d4f26fd375b9c14dbf09545.001.1","noaa_urn:oid:2.49.0.1.840.0.a2242e39a8188fb5aa93faac06d99f2c399cc63c.001.1","noaa_urn:oid:2.49.0.1.840.0.19c5a6939db5195211ab51a53435b3f322a75da1.001.1"] |
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.
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.