Right now
The most recent data we hold from SPC arrived 13 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
14 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 94 recorded within 20 km of this point since 15 March 2026 — 2 others scored the same. The last comparable one was on 11 September 2026. 2 more were recorded here in the fortnight before it.
What the source measured
SPC reported: Hail 100 in near Menan, Jefferson, ID. Facebook report relayed by Emergency Manager. (PIH)
Urban PEI: 86,847 within a heuristic 50 km radius; not unique people.
Nearby, since 15 March 2026
- September 18, 2026 · score 45 · 15.8 km
How we know
2 recorded sources include SPC; independence is not established by this count.
Our own score for this event is 45 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) | 45 / 100 |
| Legacy data-support index | 0.77/1 |
| Coordinates | 43.7200, -112.0000 |
| Nearest City | Rexburg (21 km) |
| Urban exposure index (PEI) | 86.8K within 50 km |
| Impact Tier | severe |
| Timestamp | 2026-09-18T02:00:00.000Z |
| 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: 2026-09-18T02:00:00.000Z.
First archived: 2026-09-18T08:46:29.921Z. 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
| ReportType | hail |
| Speed | 100 |
| Location | Menan |
| County | Jefferson |
| State | ID |
| Comments | Facebook report relayed by Emergency Manager. (PIH) |
| Iem TypeSummary | F |
| Iem City | Rexburg |
| Iem County | Madison |
| Iem State | ID |
| Iem Wfo | PIH |
| Iem Remark | Reports of multiple flooded basement apartments in Rexburg. Report via Facebook. |
| MergedSources | [{"id":"iem_G_43.840_-112.420_1789683600000","source":"iem","severity":"low","severityValue":25,"timestamp":1789683600000,"latitude":43.84,"longitude":-112.42},{"id":"iem_H_43.720_-112.000_1789696800000","source":"iem","severity":"low","severityValue":25,"timestamp":1789696800000,"latitude":43.72,"longitude":-112},{"id":"iem_G_43.720_-112.530_1789682100000","source":"iem","severity":"low","severityValue":25,"timestamp":1789682100000,"latitude":43.72,"longitude":-112.53},{"id":"iem_F_43.820_-111.790_1789707600000","source":"iem","severity":"low","severityValue":25,"timestamp":1789707600000,"latitude":43.82,"longitude":-111.79},{"id":"iem_F_43.820_-111.790_1789708500000","source":"iem","severity":"low","severityValue":25,"timestamp":1789708500000,"latitude":43.82,"longitude":-111.79}] |
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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