Right now
The most recent data we hold from NOAA arrived 66 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 11 May 2026 at 01:15 UTC. It is kept here as a record.
It is the 3rd strongest of the 13 detections recorded within 20 km of this point since 10 May 2026. Another comparable one was recorded here earlier the same day. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 10 at 7:21PM CDT until May 10 at 8:15PM CDT by NWS Fort Worth TX
Nearby, since 10 May 2026
- May 23, 2026 · score 34 · 18.7 km
- June 19, 2026 · score 34 · 18.8 km
- May 25, 2026 · score 22 · 21.1 km
How we know
9 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 22 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) | 22 / 100 |
| Legacy data-support index | 0.70/1 |
| Coordinates | 31.3156, -98.4630 |
| Nearest City | Copperas Cove (58 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-05-11T00:21:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.be5c5b044892fe4f7cb8b97b6467174c |
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: 2026-05-11T00:21:00.000Z.
First archived: 2026-05-11T00:28:51.177Z. 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 | Coryell, TX; McCulloch, TX; McCulloch, TX; Mason, TX; Menard, TX; San Saba, TX |
| Headline | Severe Thunderstorm Warning issued May 10 at 7:21PM CDT until May 10 at 8:15PM CDT by NWS Fort Worth TX |
| Expires | 2026-05-10T20:15:00-05:00 |
| SenderName | NWS Fort Worth TX |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.be5c5b044892fe4f7cb8b97b6467174c19d93779.001.1","noaa_urn:oid:2.49.0.1.840.0.f7f2613deb223593a77954d97c02fc75b4bf92d8.001.1","noaa_urn:oid:2.49.0.1.840.0.84568182cf5ce87e5acb2bbd7488f62ed58ea56a.001.1","noaa_urn:oid:2.49.0.1.840.0.84f6a1cda4537c8e82f5bc75bf3e311c2e13b4cf.002.1"] |
| Iem TypeSummary | H |
| Iem Magnitude | 4 |
| Iem Unit | Inch |
| Iem City | 9 WSW Cranfills Gap |
| Iem County | Hamilton |
| Iem State | TX |
| Iem Wfo | FWD |
| Iem Remark | Media chaser measured 4 inch diameter hail just east of Hwy 22 and CR 224 intersection. |
| MergedSources | [{"id":"iem_H_31.700_-97.920_1778454900000","source":"iem","severity":"low","severityValue":25,"timestamp":1778454900000,"latitude":31.7,"longitude":-97.92},{"id":"iem_H_31.930_-98.550_1778451300000","source":"iem","severity":"low","severityValue":25,"timestamp":1778451300000,"latitude":31.93,"longitude":-98.55},{"id":"iem_H_31.750_-97.950_1778454780000","source":"iem","severity":"low","severityValue":25,"timestamp":1778454780000,"latitude":31.75,"longitude":-97.95},{"id":"iem_D_31.700_-98.120_1778455440000","source":"iem","severity":"low","severityValue":25,"timestamp":1778455440000,"latitude":31.7,"longitude":-98.12},{"id":"iem_H_31.980_-98.360_1778450940000","source":"iem","severity":"low","severityValue":25,"timestamp":1778450940000,"latitude":31.98,"longitude":-98.36},{"id":"iem_H_31.940_-98.390_1778450280000","source":"iem","severity":"low","severityValue":25,"timestamp":1778450280000,"latitude":31.94,"longitude":-98.39},{"id":"iem_G_31.670_-98.150_1778454900000","source":"iem","severity":"low","severityValue":25,"timestamp":1778454900000,"latitude":31.67,"longitude":-98.15},{"id":"iem_H_31.740_-97.980_1778455200000","source":"iem","severity":"low","severityValue":25,"timestamp":1778455200000,"latitude":31.74,"longitude":-97.98}] |
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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