Right now
The most recent data we hold from NOAA arrived 46 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 19 July 2026 at 00:15 UTC. It is kept here as a record.
It is the 6th strongest of the 62 detections recorded within 20 km of this point since 17 March 2026. Another comparable one was recorded here earlier the same day. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued July 18 at 5:38PM EDT until July 18 at 8:15PM EDT by NWS Charleston WV
Urban PEI: 62,533 within a heuristic 50 km radius; not unique people.
Nearby, since 17 March 2026
- June 6, 2026 · score 39 · 5.7 km
- August 7, 2026 · score 39 · 8.4 km
- July 21, 2026 · score 39 · 8.6 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 39 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 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) | 39 / 100 |
| Legacy data-support index | 0.79/1 |
| Coordinates | 39.6487, -80.5517 |
| Nearest City | Fairmont (39 km) |
| Urban exposure index (PEI) | 62.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-18T21:38:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.3b86e4249051198b6fead54e404a332b |
Physical priority index · v1. 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: 2026-07-18T21:38:00.000Z.
First archived: 2026-07-18T21:40:35.002Z. 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 | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Barbour, WV; Taylor, WV; Westmoreland, PA; Clarion, PA; Jefferson, PA and 8 more areas |
| Headline | Flash Flood Warning issued July 18 at 5:38PM EDT until July 18 at 8:15PM EDT by NWS Charleston WV |
| Expires | 2026-07-18T20:15:00-04:00 |
| SenderName | NWS Charleston WV |
| HasExactCoords | true |
| MergedCount | 12 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.3b86e4249051198b6fead54e404a332b8c856ca0.001.1","noaa_urn:oid:2.49.0.1.840.0.41e58bcf648519c6bcb58deca23a68960ce323ef.001.1","noaa_urn:oid:2.49.0.1.840.0.69a65f168f7d4ee06973eadfcb545d375614ab97.001.1","noaa_urn:oid:2.49.0.1.840.0.05a8574b0d77278d72a1ac835772aa2e2a5243f3.001.1","noaa_urn:oid:2.49.0.1.840.0.a726a52fa3ced0638ff4ba361583276f0a66acd7.001.1","noaa_urn:oid:2.49.0.1.840.0.422ba5869a154675d2579e7cfbcbc4d98bbd4fe1.001.1","noaa_urn:oid:2.49.0.1.840.0.eeb25013ddec34af3ea9b53ddc9228e20cbbb5f5.001.1","noaa_urn:oid:2.49.0.1.840.0.10b5d9b265ddae13106267d68e70b4d593fd94c3.001.1","noaa_urn:oid:2.49.0.1.840.0.c27273ca406ee9dc04c38638df9462662b5f0ce4.001.1","noaa_urn:oid:2.49.0.1.840.0.4cdd5c59d55dc3fef3baa7d8698421616a0a2632.001.1","noaa_urn:oid:2.49.0.1.840.0.8bf0511f45c42c5d1bf0445bc83d86f6081ac102.001.1","noaa_urn:oid:2.49.0.1.840.0.15091fc0b1fa435ffe0e1afb165837db2e0a9849.001.1"] |
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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