Right now
The most recent data we hold from SPC arrived 4 minutes ago, and this point is in it.
Reported by SPC today.
What the source measured
SPC reported: Wind UNK kt near 2 WSW Logan Martin Dam, St. Clair, AL. Trees down in far southern St. Clair county. (BMX)
Urban PEI: 511,961 within a heuristic 50 km radius; not unique people.
How we know
2 recorded sources include SPC; independence is not established by this count.
Our own score for this event is 41 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 v5. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 41 / 100 |
| Legacy data-support index | 0.86/1 |
| Coordinates | 33.4100, -86.3700 |
| Nearest City | Talladega (24 km) |
| Urban exposure index (PEI) | 512.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-20T02:35:35.142Z |
| Source | https://www.spc.noaa.gov/climo/reports/today.html |
Physical priority index · v5. 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: spc. Occurrence: 2026-09-20T02:35:35.142Z.
First archived: 2026-09-20T01:40:15.773Z. Material modification: 2026-09-20T02:38:45.630Z.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
2026-09-20T02:38:45.630Z · data_change
Index 41 → 41; severity medium → medium; version 5 → 5.
2026-09-20T02:33:19.583Z · data_change
Index 41 → 41; severity medium → medium; version 5 → 5.
2026-09-20T02:28:01.783Z · data_change
Index 41 → 41; severity medium → medium; version 5 → 5.
2026-09-20T02:22:43.762Z · data_change
Index 41 → 41; severity medium → medium; version 5 → 5.
2026-09-20T02:17:25.347Z · data_change
Index 41 → 41; severity medium → medium; version 5 → 5.
2026-09-20T02:06:51.592Z · data_change
Index 41 → 41; severity medium → medium; version 5 → 5.
2026-09-20T02:01:33.997Z · data_change
Index 41 → 41; severity medium → medium; version 5 → 5.
2026-09-20T01:56:16.737Z · data_change
Index 41 → 41; severity medium → medium; version 5 → 5.
2026-09-20T01:50:59.711Z · data_change
Index 41 → 41; severity medium → medium; version 5 → 5.
2026-09-20T01:45:41.664Z · data_change
Index 41 → 41; severity medium → medium; version 5 → 5.
Score Breakdown
Technical Details
| ReportType | wind |
| Speed | UNK |
| Location | 2 WSW Logan Martin Dam |
| County | St. Clair |
| State | AL |
| Comments | Trees down in far southern St. Clair county. (BMX) |
| Iem TypeSummary | D |
| Iem City | 2 WSW Logan Martin Dam |
| Iem County | St. Clair |
| Iem State | AL |
| Iem Wfo | BMX |
| Iem Remark | Trees down in far southern St. Clair county. |
| MergedSources | [{"id":"iem_D_33.410_-86.370_1789856880000","source":"iem","severity":"low","severityValue":25,"timestamp":1789856880000,"latitude":33.41,"longitude":-86.37}] |
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.
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