Right now
The most recent data we hold from NOAA arrived 5 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
One other detection within 20 km in the last 24 hours, 20 km from here.
This alert expired on 13 July 2026 at 11:00 UTC. It is kept here as a record.
No stronger detection stands among the 25 recorded within 20 km of this point since 16 May 2026 — 18 others scored the same. 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 13 at 4:59AM CDT until July 13 at 6:00AM CDT by NWS Fort Worth TX
An estimated 5,849,475 people live within 50 km of this point.
Nearby, since 16 May 2026
- July 7, 2026 · score 52 · 2.5 km
- May 23, 2026 · score 52 · 6.4 km
- June 7, 2026 · score 52 · 8.5 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 52 out of 100, at 82 % 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
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 52 / 100 |
| Our confidence | 82% |
| Coordinates | 33.0200, -96.9956 |
| Nearest City | Lewisville (3 km) |
| Population Exposed | 5.8M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-13T09:59:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.d54bc7b92e660c76b901a27e0860775c59159ac7.001.1 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Dallas, TX; Denton, TX |
| Headline | Flash Flood Warning issued July 13 at 4:59AM CDT until July 13 at 6:00AM CDT by NWS Fort Worth TX |
| Expires | 2026-07-13T06:00:00-05:00 |
| SenderName | NWS Fort Worth TX |
| HasExactCoords | true |
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.
Want to know when something happens near Lewisville?
Calamity.live data shows a weather event with CalamityScore 52/100, near Lewisville (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.