Right now
The most recent data we hold from NOAA arrived 2 hours 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 9 May 2026 at 05:00 UTC. It is kept here as a record.
It is the 7th strongest of the 130 detections recorded within 20 km of this point since 10 March 2026. Another comparable one was recorded here earlier the same day. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Watch issued May 8 at 10:31PM CDT until May 9 at 12:00AM CDT by NWS Norman OK
An estimated 389,158 people live within 50 km of this point.
Nearby, since 10 March 2026
- August 7, 2026 · score 43 · 0.0 km
- July 6, 2026 · score 43 · 0.0 km
- July 4, 2026 · score 43 · 0.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 43 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) | 43 / 100 |
| Our confidence | 80% |
| Coordinates | 31.0000, -97.6000 |
| Nearest City | Harker Heights (11 km) |
| Population Exposed | 389.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-09T03:31:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Watch_noaa_urn:oid:2.49.0.1.840.0.e77cab983eaf7fbad4828f977ebe0f69 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Watch |
| Urgency | Future |
| Certainty | Possible |
| AreaDesc | Archer, TX; Baylor, TX; Clay, TX; Foard, TX; Hardeman, TX; Knox, TX; Wichita, TX; Wilbarger, TX; Collin, TX; Cooke, TX; Delta, TX; Denton, TX; Fannin, TX; Grayson, TX; Hopkins, TX; Hunt, TX; Jack, TX; Lamar, TX; Montague, TX; Wise, TX; Young, TX |
| Headline | Severe Thunderstorm Watch issued May 8 at 10:31PM CDT until May 9 at 12:00AM CDT by NWS Norman OK |
| Expires | 2026-05-09T00:00:00-05:00 |
| SenderName | NWS Norman OK |
| HasExactCoords | false |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.e77cab983eaf7fbad4828f977ebe0f69000a13e2.002.1","noaa_urn:oid:2.49.0.1.840.0.7d619df9004c6014e52bcdca69c4a3b63bfe5bcb.001.1"] |
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 Harker Heights?
Calamity.live data shows a weather event with CalamityScore 43/100, near Harker Heights (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.