Right now
The most recent data we hold from NOAA arrived 20 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 20 May 2026 at 01:15 UTC. It is kept here as a record.
No stronger detection stands among the 9 recorded within 20 km of this point since 10 May 2026 — 2 others scored the same. The last comparable one was on 10 May 2026. 6 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued May 19 at 5:08PM CDT until May 19 at 8:15PM CDT by NWS San Angelo TX
Urban PEI: 20,120 within a heuristic 50 km radius; not unique people.
Nearby, since 10 May 2026
- May 28, 2026 · score 34 · 21.6 km
How we know
2 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 34 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) | 34 / 100 |
| Legacy data-support index | 0.86/1 |
| Coordinates | 32.2095, -98.5300 |
| Nearest City | Stephenville (31 km) |
| Urban exposure index (PEI) | 20.1K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-19T22:08:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.e9c829f968fc7bdab52775fa7a00ea8c |
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: 2026-05-19T22:08:00.000Z.
First archived: 2026-05-19T22:12:13.741Z. 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 | Brown, TX; Dallas, TX; Tarrant, TX; Collin, TX; Denton, TX and 2 more areas |
| Headline | Flash Flood Warning issued May 19 at 5:08PM CDT until May 19 at 8:15PM CDT by NWS San Angelo TX |
| Expires | 2026-05-19T20:15:00-05:00 |
| SenderName | NWS San Angelo TX |
| HasExactCoords | true |
| MergedCount | 6 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.e9c829f968fc7bdab52775fa7a00ea8c23f6dfae.001.1","noaa_urn:oid:2.49.0.1.840.0.86b5828178f9a69d1150ea9cee1e40e11217fae8.001.1","noaa_urn:oid:2.49.0.1.840.0.d28e08949160569ebc156596d8ab4ba80e79f2d5.001.1","noaa_urn:oid:2.49.0.1.840.0.9a9adbfbc02483b184908ec6e75ed81f2c3aa331.001.1","noaa_urn:oid:2.49.0.1.840.0.2a91cd572a0460a2c6e074407a860a624a3f02a1.001.1","noaa_urn:oid:2.49.0.1.840.0.ab909a2d3df7b75f8cf927129271310612a83173.001.1"] |
| Iem TypeSummary | H |
| Iem Magnitude | 1 |
| Iem Unit | Inch |
| Iem City | 1 NNW Brownwood |
| Iem County | Brown |
| Iem State | TX |
| Iem Wfo | SJT |
| MergedSources | [{"id":"iem_H_31.730_-99.000_1779222600000","source":"iem","severity":"low","severityValue":25,"timestamp":1779222600000,"latitude":31.73,"longitude":-99}] |
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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