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 20 May 2026 at 00:15 UTC. It is kept here as a record.
No stronger detection stands among the 37 recorded within 20 km of this point since 26 April 2026 — 25 others scored the same. Another comparable one was recorded here earlier the same day. 6 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued May 19 at 4:13PM CDT until May 19 at 7:15PM CDT by NWS Fort Worth TX
Urban PEI: 6,068,823 within a heuristic 50 km radius; not unique people.
Nearby, since 26 April 2026
- May 19, 2026 · score 52 · 0.0 km
- June 7, 2026 · score 52 · 4.3 km
- May 16, 2026 · score 52 · 6.5 km
How we know
3 recorded sources include NOAA; independence is not established by this count.
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 | 0.90/1 |
| Coordinates | 32.9112, -96.9653 |
| Nearest City | Farmers Branch (6 km) |
| Urban exposure index (PEI) | 6.1M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-19T21:13:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.655e5f2bc37673db7067a3871e164b9d |
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: 2026-05-19T21:13:00.000Z.
First archived: 2026-05-19T21:51:26.976Z. 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 | Dallas, TX; Tarrant, TX; Collin, TX; Denton, TX |
| Headline | Flash Flood Warning issued May 19 at 4:13PM CDT until May 19 at 7:15PM CDT by NWS Fort Worth TX |
| Expires | 2026-05-19T19:15:00-05:00 |
| SenderName | NWS Fort Worth TX |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.655e5f2bc37673db7067a3871e164b9d837e0d95.001.1","noaa_urn:oid:2.49.0.1.840.0.86b5828178f9a69d1150ea9cee1e40e11217fae8.001.1","noaa_urn:oid:2.49.0.1.840.0.d28e08949160569ebc156596d8ab4ba80e79f2d5.001.1"] |
| Iem TypeSummary | H |
| Iem Magnitude | 0.88 |
| Iem Unit | Inch |
| Iem City | 1 N Aubrey |
| Iem County | Denton |
| Iem State | TX |
| Iem Wfo | FWD |
| Iem Remark | Report of nickel size hail north of Aubrey by HAM radio. |
| MergedSources | [{"id":"iem_G_32.930_-96.860_1779223800000","source":"iem","severity":"low","severityValue":25,"timestamp":1779223800000,"latitude":32.93,"longitude":-96.86},{"id":"iem_H_33.320_-96.990_1779216300000","source":"iem","severity":"low","severityValue":25,"timestamp":1779216300000,"latitude":33.32,"longitude":-96.99}] |
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.
Review the area, threshold and delivery channel in your account.
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