Right now
The most recent data we hold from SPC arrived 15 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
43 other detections within 20 km in the last 24 hours, the nearest <1 km from here.
Reported by SPC today.
It is the 4th strongest of the 64 detections recorded within 20 km of this point since 2 April 2026. Another comparable one was recorded here earlier the same day. 13 more were recorded here in the fortnight before it.
What the source measured
SPC reported: Hail 150 in near 2 W Kaysville, Davis, UT. From a picture shared with our office via social media... reported as Kaysville just west of I-15. (SLC)
Urban PEI: 1,374,620 within a heuristic 50 km radius; not unique people.
Nearby, since 2 April 2026
- September 19, 2026 · score 58 · 0.0 km
- September 19, 2026 · score 58 · 6.1 km
- September 18, 2026 · score 76 · 7.0 km
How we know
2 recorded sources include SPC; independence is not established by this count.
Our own score for this event is 58 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) | 58 / 100 |
| Legacy data-support index | 0.78/1 |
| Coordinates | 41.0300, -111.9500 |
| Nearest City | Kaysville (1 km) |
| Urban exposure index (PEI) | 1.4M within 50 km |
| Impact Tier | severe |
| Timestamp | 2026-09-18T19:45:00.000Z |
| 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: 2026-09-18T19:45:00.000Z.
First archived: 2026-09-18T21:25:40.461Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
2026-09-18T21:31:26.258Z · data_change
Index 58 → 58; severity high → high; version 5 → 5.
Score Breakdown
Technical Details
| ReportType | hail |
| Speed | 150 |
| Location | 2 W Kaysville |
| County | Davis |
| State | UT |
| Comments | From a picture shared with our office via social media... reported as Kaysville just west of I-15. (SLC) |
| Iem TypeSummary | T |
| Iem City | 2 E Fruit Heights |
| Iem County | Davis |
| Iem State | UT |
| Iem Wfo | SLC |
| Iem Remark | Tornado seen in video shared on social media, showing rotation reaching the ground and debris being lofted into the air. The point that it touched down was near a summit along the ridgeline extending |
| MergedSources | [{"id":"iem_H_41.510_-112.020_1789754400000","source":"iem","severity":"low","severityValue":25,"timestamp":1789754400000,"latitude":41.51,"longitude":-112.02},{"id":"iem_H_40.670_-111.840_1789742160000","source":"iem","severity":"low","severityValue":25,"timestamp":1789742160000,"latitude":40.67,"longitude":-111.84},{"id":"iem_H_41.030_-111.950_1789760700000","source":"iem","severity":"low","severityValue":25,"timestamp":1789760700000,"latitude":41.03,"longitude":-111.95},{"id":"iem_T_41.030_-111.870_1789761120000","source":"iem","severity":"low","severityValue":25,"timestamp":1789761120000,"latitude":41.03,"longitude":-111.87}] |
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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