Calamity
MediumSevere WeatherCalamity Score: 43

Severe Weather near Portsmouth

GreenupUnited StatesNOAA

Right now

The most recent data we hold from NOAA arrived 11 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.

2 other detections within 20 km in the last 24 hours, the nearest 15 km from here.

This alert expired on 5 August 2026 at 19:45 UTC. It is kept here as a record.

It is the 3rd strongest of the 71 detections recorded within 20 km of this point since 16 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 August 5 at 2:17PM EDT until August 5 at 3:45PM EDT by NWS Charleston WV

An estimated 378,804 people live within 50 km of this point.

Nearby, since 16 March 2026

How we know

One source: NOAA. Not yet confirmed by a second, independent source.

Our own score for this event is 43 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 v1. Rows carrying other versions were judged by different rules and are not directly comparable.

Event Data

TypeSevere Weather
SeverityMedium
Calamity Score (ours)43 / 100
Our confidence81%
Coordinates38.6563, -82.9231
Nearest CityPortsmouth (11 km)
Population Exposed378.8K within 50 km
Impact Tiersignificant
Timestamp2026-08-05T18:17:00.000Z
Sourcehttps://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.d8afe44c4b82cd65c5a7be3b2b054e01

Score Breakdown

35
intensity
70
population
0
cascading
80
historical

Technical Details

EventFlash Flood Warning
UrgencyImmediate
CertaintyLikely
AreaDescGreenup, KY; Scioto, OH
HeadlineFlash Flood Warning issued August 5 at 2:17PM EDT until August 5 at 3:45PM EDT by NWS Charleston WV
Expires2026-08-05T15:45:00-04:00
SenderNameNWS Charleston WV
HasExactCoordstrue
MergedCount2
MergedIds["noaa_urn:oid:2.49.0.1.840.0.d8afe44c4b82cd65c5a7be3b2b054e011de18d79.001.1","noaa_urn:oid:2.49.0.1.840.0.98a355468d1978d982961b49d48403cded38b1df.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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