Right now
The most recent data we hold from NOAA arrived 6 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
6 other detections within 20 km in the last 24 hours, the nearest <1 km from here.
This alert expired on 14 September 2026 at 22:30 UTC. It is kept here as a record.
No stronger detection stands among the 14 recorded within 20 km of this point since 15 March 2026 — 4 others scored the same. Another comparable one was recorded here earlier the same day. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 14 at 3:58PM MDT until September 14 at 4:30PM MDT by NWS Grand Junction CO
Urban PEI: 18,006 within a heuristic 50 km radius; not unique people.
Nearby, since 15 March 2026
- September 14, 2026 · score 28 · 19.7 km
How we know
2 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 28 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) | 28 / 100 |
| Legacy data-support index | 0.86/1 |
| Coordinates | 37.1287, -107.4787 |
| Nearest City | Durango (39 km) |
| Urban exposure index (PEI) | 18.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-14T21:58:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.1b320917ba76600bbaba1838c4ed2850d6ad0748.001.1 |
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: noaa. Occurrence: 2026-09-14T21:58:00.000Z.
First archived: 2026-09-14T22:04:49.280Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
2026-09-14T22:26:24.380Z · data_change
Index 28 → 28; severity medium → medium; version 5 → 5.
2026-09-14T22:15:42.656Z · data_change
Index 28 → 28; severity medium → medium; version 5 → 5.
2026-09-14T22:10:22.320Z · data_change
Index 28 → 28; severity medium → medium; version 5 → 5.
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Archuleta, CO; La Plata, CO |
| Headline | Severe Thunderstorm Warning issued September 14 at 3:58PM MDT until September 14 at 4:30PM MDT by NWS Grand Junction CO |
| Expires | 2026-09-14T16:30:00-06:00 |
| SenderName | NWS Grand Junction CO |
| HasExactCoords | true |
| Iem TypeSummary | C |
| Iem City | 1 W Ignacio |
| Iem County | La Plata |
| Iem State | CO |
| Iem Wfo | GJT |
| Iem Remark | Funnel cloud reported west of Ignacio briefly before dissipating. |
| MergedSources | [{"id":"iem_C_37.110_-107.650_1789421400000","source":"iem","severity":"low","severityValue":25,"timestamp":1789421400000,"latitude":37.11,"longitude":-107.65}] |
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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