Calamity
MediumSevere WeatherCalamity Score: 28

Severe Weather in United States

MecklenburgUnited StatesNOAA

Right now

The most recent data we hold from NOAA arrived 4 minutes ago, and this point is in it.

One other detection within 20 km in the last 24 hours, 8 km from here.

This alert is in force until 11 September 2026, 22:30 UTC.

It is the 35th strongest of the 63 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 6 more were recorded here in the fortnight before it.

What the source measured

NOAA reported: Flash Flood Warning issued September 11 at 4:13PM EDT until September 11 at 6:30PM EDT by NWS Wakefield VA

An estimated 15,271 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 28 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

TypeSevere Weather
SeverityMedium
Calamity Score (ours)28 / 100
Our confidence81%
Coordinates36.7571, -78.2386
Nearest CityHenderson (50 km)
Population Exposed15.3K within 50 km
Impact Tiersignificant
Timestamp2026-09-11T20:13:00.000Z
Sourcehttps://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.6e445aa1bd32d3f8cc29327b1d6a6e8817fffab4.001.1

Score Breakdown

35
intensity
40
population
0
cascading
18
historical

Technical Details

EventFlash Flood Warning
UrgencyImmediate
CertaintyLikely
AreaDescMecklenburg, VA
HeadlineFlash Flood Warning issued September 11 at 4:13PM EDT until September 11 at 6:30PM EDT by NWS Wakefield VA
Expires2026-09-11T18:30:00-04:00
SenderNameNWS Wakefield VA
HasExactCoordstrue

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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