Right now
The most recent data we hold from NOAA arrived 28 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 04:00 UTC. It is kept here as a record.
It is the 4th strongest of the 11 detections recorded within 20 km of this point since 7 May 2026. The last comparable one was on 19 May 2026. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued May 19 at 8:02PM CDT until May 19 at 11:00PM CDT by NWS Fort Worth TX
Nearby, since 7 May 2026
- May 7, 2026 · score 22 · 4.7 km
- May 20, 2026 · score 22 · 9.3 km
- May 25, 2026 · score 39 · 15.6 km
How we know
Confirmed by 3 independent sources, including NOAA.
Our own score for this event is 22 out of 100, at 71 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
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) | 22 / 100 |
| Our confidence | 71% |
| Coordinates | 30.9089, -100.3324 |
| Nearest City | San Angelo (62 km) |
| Impact Tier | minor |
| Timestamp | 2026-05-20T01:02:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.292b4e0810f33683ca999e6e6c451031 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Bell, TX; Burnet, TX; Llano, TX; Kimble, TX; McCulloch, TX; Menard, TX and 6 more areas |
| Headline | Flash Flood Warning issued May 19 at 8:02PM CDT until May 19 at 11:00PM CDT by NWS Fort Worth TX |
| Expires | 2026-05-19T23:00:00-05:00 |
| SenderName | NWS Fort Worth TX |
| HasExactCoords | true |
| MergedCount | 9 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.292b4e0810f33683ca999e6e6c45103149750762.001.1","noaa_urn:oid:2.49.0.1.840.0.bc037523a971ecad6ca4ea6a247173421eb9dd63.001.1","noaa_urn:oid:2.49.0.1.840.0.79c9393b7db1f70de36174a0882e1d4802b19deb.001.1","noaa_urn:oid:2.49.0.1.840.0.83e125c83826510ea258d54d88bf4eeec3177c40.001.1","noaa_urn:oid:2.49.0.1.840.0.e9c829f968fc7bdab52775fa7a00ea8c23f6dfae.001.1","noaa_urn:oid:2.49.0.1.840.0.1c809a20fa3b617ab623956cddb3a521a19630d5.001.1","noaa_urn:oid:2.49.0.1.840.0.a78ea6ff1a2f2f63aff48800101afe27627136e3.001.1","noaa_urn:oid:2.49.0.1.840.0.84129542d65ebdb4caf447cd753e55c564055b60.001.1","noaa_urn:oid:2.49.0.1.840.0.ba9c099f346e81aa7fa01a6b81272947e963d8cf.001.1"] |
| Iem TypeSummary | H |
| Iem Magnitude | 1.25 |
| Iem Unit | Inch |
| Iem City | Mertzon |
| Iem County | Irion |
| Iem State | TX |
| Iem Wfo | SJT |
| MergedSources | [{"id":"iem_H_31.270_-100.810_1779232380000","source":"iem","severity":"low","severityValue":25,"timestamp":1779232380000,"latitude":31.27,"longitude":-100.81},{"id":"iem_H_31.260_-100.820_1779233100000","source":"iem","severity":"low","severityValue":25,"timestamp":1779233100000,"latitude":31.26,"longitude":-100.82}] |
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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