Right now
The most recent data we hold from NOAA arrived 2 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 27 May 2026 at 18:00 UTC. It is kept here as a record.
No stronger detection stands among the 33 recorded within 20 km of this point since 28 April 2026 — 8 others scored the same. Another comparable one was recorded here earlier the same day. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued May 27 at 10:49AM CDT until May 27 at 1:00PM CDT by NWS Fort Worth TX
An estimated 3,869,292 people live within 50 km of this point.
Nearby, since 28 April 2026
- July 5, 2026 · score 52 · 8.5 km
- May 19, 2026 · score 52 · 12.0 km
- June 20, 2026 · score 52 · 13.1 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 79 % 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 | 79% |
| Coordinates | 32.8954, -96.5338 |
| Nearest City | Rowlett (2 km) |
| Population Exposed | 3.9M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-27T15:49:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.64708ab6ea98ceddb7e6b9f1e44f2980 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Collin, TX; Dallas, TX; Kaufman, TX; Rockwall, TX |
| Headline | Flash Flood Warning issued May 27 at 10:49AM CDT until May 27 at 1:00PM CDT by NWS Fort Worth TX |
| Expires | 2026-05-27T13:00:00-05:00 |
| SenderName | NWS Fort Worth TX |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.64708ab6ea98ceddb7e6b9f1e44f29801600302c.001.1","noaa_urn:oid:2.49.0.1.840.0.4dfd5317129c4e69cae92b79c9e79a6f1ddbcc20.001.1"] |
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.
Want to know when something happens near Rowlett?
Calamity.live data shows a weather event with CalamityScore 52/100, near Rowlett (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.