This alert expired on 6 June 2026 at 03:00 UTC. It is kept here as a record.
No stronger detection stands among the 18 recorded within 20 km of this point since 9 May 2026 — 4 others scored the same. The last comparable one was on 27 May 2026. 6 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued June 5 at 5:40PM CDT until June 5 at 10:00PM CDT by NWS Austin/San Antonio TX
An estimated 1,529,073 people live within 50 km of this point.
Nearby, since 9 May 2026
- June 6, 2026 · score 52 · 7.1 km
- May 27, 2026 · score 48 · 7.6 km
- May 9, 2026 · score 48 · 14.6 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 81 % 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 | 81% |
| Coordinates | 30.6818, -97.8959 |
| Nearest City | Leander (12 km) |
| Population Exposed | 1.5M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-05T22:40:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.83664b77617a4f8ded82b34108c5e424ba190502.001.1 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Burnet, TX; Williamson, TX |
| Headline | Flash Flood Warning issued June 5 at 5:40PM CDT until June 5 at 10:00PM CDT by NWS Austin/San Antonio TX |
| Expires | 2026-06-05T22:00:00-05:00 |
| SenderName | NWS Austin/San Antonio 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 Leander?
Calamity.live data shows a weather event with CalamityScore 52/100, near Leander (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.