This alert expired on 21 May 2026 at 15:00 UTC. It is kept here as a record.
No stronger detection stands among the 44 recorded within 20 km of this point since 11 May 2026 — 31 others scored the same. Another comparable one was recorded here earlier the same day. 7 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued May 21 at 7:05AM CDT until May 21 at 10:00AM CDT by NWS Corpus Christi TX
An estimated 332,355 people live within 50 km of this point.
Nearby, since 11 May 2026
- May 29, 2026 · score 43 · 10.7 km
- July 10, 2026 · score 43 · 12.9 km
- May 27, 2026 · score 43 · 19.7 km
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, at 82 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 43 / 100 |
| Our confidence | 82% |
| Coordinates | 27.9619, -97.3807 |
| Nearest City | Portland (11 km) |
| Population Exposed | 332.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-21T12:05:00.000Z |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Aransas, TX; Calhoun, TX; Refugio, TX; Victoria, TX; Kleberg, TX; Nueces, TX; San Patricio, TX; Jim Wells, TX; Nueces, TX; San Patricio, TX |
| Headline | Flash Flood Warning issued May 21 at 7:05AM CDT until May 21 at 10:00AM CDT by NWS Corpus Christi TX |
| Expires | 2026-05-21T10:00:00-05:00 |
| SenderName | NWS Corpus Christi TX |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.c7adaf319372dd582ab4eb2c17c38fb2a7351116.001.1","noaa_urn:oid:2.49.0.1.840.0.ee4066fe7f7185a5b6961f71053bd045dbbd7ea4.001.1","noaa_urn:oid:2.49.0.1.840.0.ffdc76546432195ef97147402673ae26d8fed0e3.001.1"] |
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 10 February 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.
Calamity.live data shows a weather event with CalamityScore 43/100, near Portland (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 194 scientific monitoring sources.