Right now
The most recent data we hold from NOAA arrived 23 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 05:15 UTC. It is kept here as a record.
It is the 2nd strongest of the 5 detections recorded within 20 km of this point since 20 May 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 19 at 11:22PM CDT until May 20 at 12:15AM CDT by NWS Austin/San Antonio TX
Urban PEI: 974,447 within a heuristic 50 km radius; not unique people.
Nearby, since 20 May 2026
- May 20, 2026 · score 22 · 15.8 km
How we know
4 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 48 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) | 48 / 100 |
| Legacy data-support index | 0.91/1 |
| Coordinates | 30.0112, -97.3294 |
| Nearest City | Austin (49 km) |
| Urban exposure index (PEI) | 974.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-20T04:22:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.eb6c79e95a7ca2554c3c607c68596224 |
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: 2026-05-20T04:22:00.000Z.
First archived: 2026-05-20T04:27:33.870Z. 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 | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Bandera, TX; Bexar, TX; Blanco, TX; Comal, TX; Kendall, TX; Kerr, TX; Fayette, TX; Lee, TX; Austin, TX; Burleson, TX; Colorado, TX; Washington, TX |
| Headline | Severe Thunderstorm Warning issued May 19 at 11:22PM CDT until May 20 at 12:15AM CDT by NWS Austin/San Antonio TX |
| Expires | 2026-05-20T00:15:00-05:00 |
| SenderName | NWS Austin/San Antonio TX |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.eb6c79e95a7ca2554c3c607c685962247c12fe61.001.1","noaa_urn:oid:2.49.0.1.840.0.92bb1155877f978da8011cfeb22e3dfb0a52a480.002.1","noaa_urn:oid:2.49.0.1.840.0.0845b93fab0e0f350bd6a93d24f7a6b81b3cb03a.001.1"] |
| Iem TypeSummary | G |
| Iem Magnitude | 60 |
| Iem Unit | MPH |
| Iem City | 4 W Sunset Valley |
| Iem County | Travis |
| Iem State | TX |
| Iem Wfo | EWX |
| Iem Remark | Power flashes in Oak Hill area of Austin. 50 to 60 mph winds estimated by news media. |
| Google News RssFeed | weather |
| Google News SourceName | Austin American-Statesman |
Safety Information
Always follow official guidance from your local emergency management agency. This platform provides scientific monitoring data and is not a substitute for official warnings. If you are in immediate danger, contact your local emergency number.
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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