Right now
The most recent data we hold from NOAA arrived 3 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 17 July 2026 at 07:15 UTC. It is kept here as a record.
No stronger detection stands among the 63 recorded within 20 km of this point since 20 June 2026 — 12 others scored the same. The last comparable one was on 15 July 2026. 41 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flood Warning issued July 16 at 8:09AM CDT until July 17 at 3:20AM CDT by NWS Austin/San Antonio TX
Urban PEI: 1,526,656 within a heuristic 50 km radius; not unique people.
Nearby, since 20 June 2026
- June 20, 2026 · score 52 · 10.2 km
- July 20, 2026 · score 52 · 17.8 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.
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) | 52 / 100 |
| Legacy data-support index | 0.82/1 |
| Coordinates | 29.4362, -98.9107 |
| Nearest City | San Antonio (41 km) |
| Urban exposure index (PEI) | 1.5M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-20T00:00:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flood Warning_noaa_urn:oid:2.49.0.1.840.0.4333a77d0ac6b455bad329a4c6c9e72c |
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: 2026-07-20T00:00:00.000Z.
First archived: 2026-07-16T13:29:12.261Z. 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 | Flood Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Kerr, TX; Kendall, TX; Comal, TX and 17 more areas |
| Headline | Flood Warning issued July 16 at 8:09AM CDT until July 17 at 3:20AM CDT by NWS Austin/San Antonio TX |
| Expires | 2026-07-17T02:15:00-05:00 |
| SenderName | NWS Austin/San Antonio TX |
| HasExactCoords | true |
| MergedCount | 28 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.4333a77d0ac6b455bad329a4c6c9e72c506ae60f.002.1","noaa_urn:oid:2.49.0.1.840.0.4333a77d0ac6b455bad329a4c6c9e72c506ae60f.001.1","noaa_urn:oid:2.49.0.1.840.0.4333a77d0ac6b455bad329a4c6c9e72c506ae60f.003.1","noaa_urn:oid:2.49.0.1.840.0.291dc96018f462d900f1f15161aefc21f9f8cb76.001.1","noaa_urn:oid:2.49.0.1.840.0.c08060628bfe6bddf1a26a9aefd9520bfa97c6f6.002.1","noaa_urn:oid:2.49.0.1.840.0.c08060628bfe6bddf1a26a9aefd9520bfa97c6f6.001.1","noaa_urn:oid:2.49.0.1.840.0.ec1790220e54d57c1f5b4db46e6216e791689583.001.1","noaa_urn:oid:2.49.0.1.840.0.2e71ead069498c2f34503dbd38a6b66026a78f8f.001.1","noaa_urn:oid:2.49.0.1.840.0.e48e90d46df74345b9d0c7c8ba885fb32e2a31b4.001.1","noaa_urn:oid:2.49.0.1.840.0.077805297513cd598450f244a34acb096913bfc4.001.1","noaa_urn:oid:2.49.0.1.840.0.9b46e4c105bbe532be779c2d2107cd80c61f7922.001.1","noaa_urn:oid:2.49.0.1.840.0.0290d91d299e49baf7c76e4d437dd7195dd7412c.001.1","noaa_urn:oid:2.49.0.1.840.0.1d5750f984e856f65d4601ccc315f3ea55fbfe5b.001.1","noaa_urn:oid:2.49.0.1.840.0.136dfbc48a5e11e7e104b39b7fe58503efad7fa1.001.1","noaa_urn:oid:2.49.0.1.840.0.a765f3faef3d84206068fffec15bb95f2c3288e0.001.1","noaa_urn:oid:2.49.0.1.840.0.3869160adfa7e6d8656d771faa74cfa1610bb7ef.001.1","noaa_urn:oid:2.49.0.1.840.0.3869160adfa7e6d8656d771faa74cfa1610bb7ef.002.1","noaa_urn:oid:2.49.0.1.840.0.0d86901b57f8c8cf42fa3884b35571193665d520.001.1","noaa_urn:oid:2.49.0.1.840.0.737b866f8145b1eb5a2d2014baa4135a90cb0a47.001.1","noaa_urn:oid:2.49.0.1.840.0.2f5f88a2f7a72d59cc5dba953ab5221d21e116c5.001.1","noaa_urn:oid:2.49.0.1.840.0.72608bcc148cee8b2ec4824c4c784d5d4e0646f7.005.1","noaa_urn:oid:2.49.0.1.840.0.72608bcc148cee8b2ec4824c4c784d5d4e0646f7.008.1","noaa_urn:oid:2.49.0.1.840.0.72608bcc148cee8b2ec4824c4c784d5d4e0646f7.002.1","noaa_urn:oid:2.49.0.1.840.0.72608bcc148cee8b2ec4824c4c784d5d4e0646f7.006.1","noaa_urn:oid:2.49.0.1.840.0.72608bcc148cee8b2ec4824c4c784d5d4e0646f7.003.1","noaa_urn:oid:2.49.0.1.840.0.72608bcc148cee8b2ec4824c4c784d5d4e0646f7.007.1","noaa_urn:oid:2.49.0.1.840.0.72608bcc148cee8b2ec4824c4c784d5d4e0646f7.001.1","noaa_urn:oid:2.49.0.1.840.0.8732a855ab41ca741f22d6f42c50036f536256cd.009.1"] |
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.
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