Right now
The most recent data we hold from SPC arrived 9 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
10 other detections within 20 km in the last 24 hours, the nearest <1 km from here.
Reported by SPC today.
No stronger detection stands among the 71 recorded within 20 km of this point since 17 April 2026 — 11 others scored the same. Another comparable one was recorded here earlier the same day. 12 more were recorded here in the fortnight before it.
What the source measured
SPC reported: Hail 100 in near 1 SW Saint Paul, St. Charles, MO. (LSX)
Urban PEI: 754,386 within a heuristic 50 km radius; not unique people.
Nearby, since 17 April 2026
- September 18, 2026 · score 54 · 0.0 km
- September 17, 2026 · score 54 · 5.0 km
- June 8, 2026 · score 52 · 13.0 km
How we know
One source: SPC. Not yet confirmed by a second, independent source.
Our own score for this event is 54 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 | High |
| Calamity Score (ours) | 54 / 100 |
| Legacy data-support index | 0.71/1 |
| Coordinates | 38.8400, -90.7400 |
| Nearest City | O'Fallon (5 km) |
| Urban exposure index (PEI) | 754.4K within 50 km |
| Impact Tier | severe |
| Timestamp | 2026-09-18T06:46:26.818Z |
| 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: 2026-09-18T06:46:26.818Z.
First archived: 2026-09-18T05:44:14.500Z. Material modification: 2026-09-18T06:48:35.380Z.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
2026-09-18T06:48:35.380Z · data_change
Index 54 → 54; severity high → high; version 5 → 5.
2026-09-18T06:43:16.365Z · data_change
Index 54 → 54; severity high → high; version 5 → 5.
2026-09-18T06:37:57.538Z · data_change
Index 54 → 54; severity high → high; version 5 → 5.
2026-09-18T06:32:35.170Z · data_change
Index 54 → 54; severity high → high; version 5 → 5.
2026-09-18T06:27:16.648Z · data_change
Index 54 → 54; severity high → high; version 5 → 5.
2026-09-18T06:21:58.820Z · data_change
Index 54 → 54; severity high → high; version 5 → 5.
2026-09-18T06:11:16.491Z · data_change
Index 54 → 54; severity high → high; version 5 → 5.
2026-09-18T06:05:55.976Z · data_change
Index 54 → 54; severity high → high; version 5 → 5.
2026-09-18T06:00:33.423Z · data_change
Index 54 → 54; severity high → high; version 5 → 5.
2026-09-18T05:55:11.916Z · data_change
Index 54 → 54; severity high → high; version 5 → 5.
2026-09-18T05:49:49.173Z · data_change
Index 54 → 54; severity high → high; version 5 → 5.
Score Breakdown
Technical Details
| ReportType | hail |
| Speed | 100 |
| Location | 1 SW Saint Paul |
| County | St. Charles |
| State | MO |
| Comments | (LSX) |
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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