Calamity
HighSevere WeatherCS: 28 · v5

Severe Weather in United States

United StatesSPC

Right now

The most recent data we hold from SPC arrived 11 minutes ago, and this point is in it.

5 other detections within 20 km in the last 24 hours, the nearest 14 km from here.

Reported by SPC today.

No stronger detection stands among the 8 recorded within 20 km of this point since 1 April 2026 — 4 others scored the same. Another comparable one was recorded here earlier the same day. 5 more were recorded here in the fortnight before it.

What the source measured

SPC reported: Tornado reported near Arboles, Archuleta, CO. [Landspout] (GJT)

Nearby, since 1 April 2026

How we know

2 recorded sources include SPC; 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

TypeSevere Weather
SeverityHigh
Calamity Score (ours)28 / 100
Legacy data-support index0.61/1
Coordinates37.0200, -107.3900
Nearest CityDurango (52 km)
Urban exposure index (PEI)0 within 50 km
Impact Tierminor
Timestamp2026-09-15T02:31:09.705Z
Sourcehttps://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: 2026-09-15T02:31:09.705Z.

First archived: 2026-09-14T22:58:20.856Z. Material modification: 2026-09-15T02:33:39.050Z.

Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.

  1. 2026-09-15T02:33:39.050Z · data_change

    Index 2828; severity highhigh; version 55.

  2. 2026-09-15T02:28:18.759Z · data_change

    Index 2828; severity highhigh; version 55.

  3. 2026-09-15T02:23:01.293Z · data_change

    Index 2828; severity highhigh; version 55.

  4. 2026-09-15T02:17:44.601Z · data_change

    Index 2828; severity highhigh; version 55.

  5. 2026-09-14T23:46:51.581Z · data_change

    Index 2828; severity highhigh; version 55.

  6. 2026-09-14T23:41:30.548Z · data_change

    Index 2828; severity highhigh; version 55.

  7. 2026-09-14T23:30:47.422Z · data_change

    Index 2828; severity highhigh; version 55.

  8. 2026-09-14T23:20:04.752Z · data_change

    Index 2828; severity highhigh; version 55.

  9. 2026-09-14T23:14:42.691Z · data_change

    Index 2828; severity highhigh; version 55.

Score Breakdown

50
intensity
0
Urban PEI term
0
Scenario weight
80
Recorded reference / batch anomaly

Technical Details

ReportTypetornado
SpeedUNK
LocationArboles
CountyArchuleta
StateCO
Comments[Landspout] (GJT)
Iem TypeSummaryC
Iem City1 W Ignacio
Iem CountyLa Plata
Iem StateCO
Iem WfoGJT
Iem RemarkFunnel cloud reported west of Ignacio briefly before dissipating.
MergedSources[{"id":"iem_W_37.020_-107.390_1789425000000","source":"iem","severity":"low","severityValue":25,"timestamp":1789425000000,"latitude":37.02,"longitude":-107.39},{"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.

Follow this area

Review the area, threshold and delivery channel in your account.

Want to know when something happens in this area?

Share:XLinkedIn