Right now
The most recent data we hold from SPC arrived 8 hours ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
9 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 29 recorded within 20 km of this point since 1 April 2026 — 10 others scored the same. The last comparable one was on 2 September 2026. 10 more were recorded here in the fortnight before it.
What the source measured
SPC reported: Wind 60 kt near 5 NW Mack, Mesa, CO. (GJT)
Urban PEI: 80,247 within a heuristic 50 km radius; not unique people.
Nearby, since 1 April 2026
- September 16, 2026 · score 32 · 14.7 km
How we know
2 recorded sources include SPC; independence is not established by this count.
Our own score for this event is 32 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) | 32 / 100 |
| Legacy data-support index | 0.74/1 |
| Coordinates | 39.2700, -108.9300 |
| Nearest City | Grand Junction (40 km) |
| Urban exposure index (PEI) | 80.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-16T00:10:00.000Z |
| 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: 2026-09-16T00:10:00.000Z.
First archived: 2026-09-16T03:39:40.744Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
2026-09-16T06:16:12.724Z · data_change
Index 32 → 32; severity medium → medium; version 5 → 5.
2026-09-16T05:54:46.378Z · data_change
Index 32 → 32; severity medium → medium; version 5 → 5.
2026-09-16T05:43:59.896Z · data_change
Index 32 → 32; severity medium → medium; version 5 → 5.
2026-09-16T05:22:19.096Z · data_change
Index 32 → 32; severity medium → medium; version 5 → 5.
2026-09-16T05:00:46.038Z · data_change
Index 32 → 32; severity medium → medium; version 5 → 5.
2026-09-16T04:49:59.749Z · data_change
Index 32 → 32; severity medium → medium; version 5 → 5.
2026-09-16T04:17:43.979Z · data_change
Index 32 → 32; severity medium → medium; version 5 → 5.
2026-09-16T03:56:05.864Z · data_change
Index 32 → 32; severity medium → medium; version 5 → 5.
Score Breakdown
Technical Details
| ReportType | wind |
| Speed | 60 |
| Location | 5 NW Mack |
| County | Mesa |
| State | CO |
| Comments | (GJT) |
| Iem TypeSummary | G |
| Iem Magnitude | 60 |
| Iem Unit | MPH |
| Iem City | 5 NW Mack |
| Iem County | Mesa |
| Iem State | CO |
| Iem Wfo | GJT |
| MergedSources | [{"id":"iem_F_39.280_-108.960_1789519680000","source":"iem","severity":"low","severityValue":25,"timestamp":1789519680000,"latitude":39.28,"longitude":-108.96},{"id":"iem_G_39.270_-108.930_1789517400000","source":"iem","severity":"low","severityValue":25,"timestamp":1789517400000,"latitude":39.27,"longitude":-108.93}] |
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.
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