Right now
The most recent data we hold from NOAA arrived 6 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 10 May 2026 at 06:30 UTC. It is kept here as a record.
No stronger detection stands among the 21 recorded within 20 km of this point since 16 April 2026 — 3 others scored the same. The last comparable one was on 26 April 2026. 11 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 10 at 12:49AM CDT until May 10 at 1:30AM CDT by NWS Fort Worth TX
An estimated 97,395 people live within 50 km of this point.
Nearby, since 16 April 2026
- August 8, 2026 · score 39 · 13.5 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 39 out of 100, at 80 % 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) | 39 / 100 |
| Our confidence | 80% |
| Coordinates | 33.6740, -96.5960 |
| Nearest City | Sherman (4 km) |
| Population Exposed | 97.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-10T05:49:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.4d4e99302a65519b241000b239d09f5a776a4d9a.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Grayson, TX |
| Headline | Severe Thunderstorm Warning issued May 10 at 12:49AM CDT until May 10 at 1:30AM CDT by NWS Fort Worth TX |
| Expires | 2026-05-10T01:30:00-05:00 |
| SenderName | NWS Fort Worth TX |
| HasExactCoords | true |
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.
Want to know when something happens near Sherman?
Calamity.live data shows a weather event with CalamityScore 39/100, near Sherman (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.