Right now
The most recent data we hold from NOAA arrived 4 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 15 June 2026 at 15:45 UTC. It is kept here as a record.
It is the 2nd strongest of the 17 detections recorded within 20 km of this point since 20 May 2026. 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: Flash Flood Warning issued June 15 at 5:36AM CDT until June 15 at 10:45AM CDT by NWS Austin/San Antonio TX
Urban PEI: 322,065 within a heuristic 50 km radius; not unique people.
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.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
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 |
| Legacy data-support index | 0.82/1 |
| Coordinates | 29.9546, -98.3199 |
| Nearest City | Canyon Lake (10 km) |
| Urban exposure index (PEI) | 322.1K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-15T10:36:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.7647a8dd26796cbcdd68f2525f25982d |
Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-06-15T10:36:00.000Z.
First archived: 2026-06-15T11:05:41.157Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Bexar, TX; Medina, TX; Bandera, TX; Bexar, TX; Kendall, TX; Medina, TX; Blanco, TX; Hays, TX; Travis, TX and 10 more areas |
| Headline | Flash Flood Warning issued June 15 at 5:36AM CDT until June 15 at 10:45AM CDT by NWS Austin/San Antonio TX |
| Expires | 2026-06-15T10:45:00-05:00 |
| SenderName | NWS Austin/San Antonio TX |
| HasExactCoords | true |
| MergedCount | 13 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.7647a8dd26796cbcdd68f2525f25982d58949b3e.001.1","noaa_urn:oid:2.49.0.1.840.0.3cc8921bde9b5d69ed708b5c9b7dac060e4930d6.001.1","noaa_urn:oid:2.49.0.1.840.0.62e9119bc4d7c706afb904af4e2e6925de91de71.001.1","noaa_urn:oid:2.49.0.1.840.0.5628d4dfaedfce09a3d7e03d46cc88d1b3aa4525.001.1","noaa_urn:oid:2.49.0.1.840.0.04988dd82ee9355e7609a4a007bf046e210a9d8d.001.1","noaa_urn:oid:2.49.0.1.840.0.a35c284635271eea453bdadd0f1425d12863f821.001.1","noaa_urn:oid:2.49.0.1.840.0.b8d18e121d4a38dfaa6057b27c0f4e5ff07e7ea0.001.1","noaa_urn:oid:2.49.0.1.840.0.21e7bf8e6a841809d0fcdc8812ba5ddfcaba7cce.001.1","noaa_urn:oid:2.49.0.1.840.0.64509405ac91e17570b9adb09d72616cb2d3317f.001.1","noaa_urn:oid:2.49.0.1.840.0.919806b257d3b2d58f98cf4c496ee04e33774d0a.001.1","noaa_urn:oid:2.49.0.1.840.0.b550971e3b0f2a91000981e294514eabd08a0cc6.001.1","noaa_urn:oid:2.49.0.1.840.0.f76560282d97281cd51f2ab8c7aa19b9484c9679.001.1","noaa_urn:oid:2.49.0.1.840.0.054d1b3cce6d8da24de3322500373265c7d1c198.001.1"] |
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.
Review the area, threshold and delivery channel in your account.
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