Right now
The most recent data we hold from NOAA arrived 4 minutes ago, and this point is in it.
6 other detections within 20 km in the last 24 hours, the nearest <1 km from here.
This alert is in force until 10 September 2026, 10:30 UTC.
It is the 18th strongest of the 52 detections recorded within 20 km of this point since 15 March 2026. Another comparable one was recorded here earlier the same day. 15 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flood Warning issued September 9 at 11:38PM EDT until September 10 at 6:30AM EDT by NWS Pittsburgh PA
An estimated 186,160 people live within 50 km of this point.
Nearby, since 15 March 2026
- June 25, 2026 · score 43 · 10.3 km
- June 25, 2026 · score 67 · 16.7 km
- September 4, 2026 · score 37 · 18.7 km
How we know
Confirmed by 3 independent sources, including NOAA.
Our own score for this event is 37 out of 100, at 91 % 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) | 37 / 100 |
| Our confidence | 91% |
| Coordinates | 40.6320, -80.8850 |
| Nearest City | Weirton (34 km) |
| Population Exposed | 186.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-10T03:38:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.c48286120a9f29ac84ac7cfd6e0fdbf99c9a5ebb.001.1 |
Score Breakdown
Technical Details
| Event | Flood Warning |
| Urgency | Expected |
| Certainty | Likely |
| AreaDesc | Carroll, OH; Columbiana, OH; Jefferson, OH; Hancock, WV |
| Headline | Flood Warning issued September 9 at 11:38PM EDT until September 10 at 6:30AM EDT by NWS Pittsburgh PA |
| Expires | 2026-09-10T06:30:00-04:00 |
| SenderName | NWS Pittsburgh PA |
| HasExactCoords | true |
| Spc ReportType | wind |
| Spc Speed | UNK |
| Spc Location | 1 ESE Chester |
| Spc County | Hancock |
| Spc State | WV |
| Spc Comments | Report of a power line down. Time estimated based on radar. (PBZ) |
| Iem TypeSummary | D |
| Iem City | 1 S Hartville |
| Iem County | Stark |
| Iem State | OH |
| Iem Wfo | CLE |
| Iem Remark | Tree and utility wires down. Time estimated via radar. |
Safety Information
During flooding: never walk, swim, or drive through floodwaters. Six inches of moving water can knock you down, and one foot of water can sweep away a vehicle. Move to higher ground if waters rise. After flooding, avoid contact with floodwater which may contain sewage, chemicals, or debris. Follow local emergency service guidance.
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.
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