Right now
The most recent data we hold from NOAA arrived 4 minutes ago, and this point is in it.
5 other detections within 20 km in the last 24 hours, the nearest 9 km from here.
This alert expired on 11 September 2026 at 20:30 UTC. It is kept here as a record.
No stronger detection stands among the 41 recorded within 20 km of this point since 26 April 2026 — 2 others scored the same. Another comparable one was recorded here earlier the same day. 5 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 11 at 2:29PM CDT until September 11 at 3:30PM CDT by NWS Fort Worth TX
An estimated 4,271,842 people live within 50 km of this point.
Nearby, since 26 April 2026
- June 7, 2026 · score 52 · 7.4 km
- June 19, 2026 · score 52 · 7.6 km
- May 25, 2026 · score 52 · 8.5 km
How we know
Confirmed by 3 independent sources, including NOAA.
Our own score for this event is 58 out of 100, at 91 % 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
| Type | Severe Weather |
| Severity | High |
| Calamity Score (ours) | 58 / 100 |
| Our confidence | 91% |
| Coordinates | 32.5560, -97.0920 |
| Nearest City | Mansfield (5 km) |
| Population Exposed | 4.3M within 50 km |
| Impact Tier | severe |
| Timestamp | 2026-09-11T19:29:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.cc5f64fe6dd3b8e01ef86d42a3ec26620a53fff9.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Dallas, TX; Ellis, TX; Johnson, TX; Tarrant, TX |
| Headline | Severe Thunderstorm Warning issued September 11 at 2:29PM CDT until September 11 at 3:30PM CDT by NWS Fort Worth TX |
| Expires | 2026-09-11T15:30:00-05:00 |
| SenderName | NWS Fort Worth TX |
| HasExactCoords | true |
| Spc ReportType | hail |
| Spc Speed | 100 |
| Spc Location | 4 SSE Arlington |
| Spc County | Tarrant |
| Spc State | TX |
| Spc Comments | (FWD) |
| Iem TypeSummary | H |
| Iem Magnitude | 1 |
| Iem Unit | Inch |
| Iem City | 4 SSE Arlington |
| Iem County | Tarrant |
| Iem State | TX |
Safety Information
Always follow official guidance from your local emergency management agency. This platform provides scientific monitoring data and is not a substitute for official warnings. If you are in immediate danger, contact your local emergency number.
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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