Right now
The most recent data we hold from NOAA arrived 5 hours 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 4 July 2026 at 00:15 UTC. It is kept here as a record.
No stronger detection stands among the 100 recorded within 20 km of this point since 10 March 2026 — 62 others scored the same. The last comparable one was on 21 June 2026. 19 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 3 at 6:30PM CDT until July 3 at 7:15PM CDT by NWS Birmingham AL
Urban PEI: 538,692 within a heuristic 50 km radius; not unique people.
Nearby, since 10 March 2026
- July 3, 2026 · score 48 · 0.0 km
- July 4, 2026 · score 48 · 1.8 km
- May 28, 2026 · score 48 · 2.7 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
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 | 0.79/1 |
| Coordinates | 33.4820, -86.7280 |
| Nearest City | Mountain Brook (3 km) |
| Urban exposure index (PEI) | 538.7K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-03T23:30:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.454b7bfdd7cc96d44806a4e88a4407452e9fa23b.001.1 |
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: 2026-07-03T23:30:00.000Z.
First archived: 2026-07-03T23:44:32.831Z. 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 | Jefferson, AL; Shelby, AL |
| Headline | Severe Thunderstorm Warning issued July 3 at 6:30PM CDT until July 3 at 7:15PM CDT by NWS Birmingham AL |
| Expires | 2026-07-03T19:15:00-05:00 |
| SenderName | NWS Birmingham AL |
| HasExactCoords | true |
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.
Review the area, threshold and delivery channel in your account.
Want to know when something happens near Mountain Brook?