Right now
The most recent data we hold from NOAA arrived 3 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 20 September 2026 at 04:00 UTC. It is kept here as a record.
It is the 97th strongest of the 112 detections recorded within 20 km of this point since 15 March 2026. The last comparable one was on 5 September 2026. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Watch issued September 19 at 3:28PM MDT until September 19 at 10:00PM MDT by NWS Goodland KS
Nearby, since 15 March 2026
- September 5, 2026 · score 16 · 0.0 km
- August 13, 2026 · score 22 · 0.0 km
- August 12, 2026 · score 22 · 0.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 16 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) | 16 / 100 |
| Legacy data-support index | 0.61/1 |
| Coordinates | 39.1000, -105.4000 |
| Nearest City | Castle Rock (55 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-09-19T21:28:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.62ad2097153d7d5eb5f6f598fab0ed13a84806a6.001.1 |
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: 2026-09-19T21:28:00.000Z.
First archived: 2026-09-19T21:34:05.182Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
2026-09-20T03:31:45.864Z · data_change
Index 16 → 16; severity medium → medium; version 5 → 5.
2026-09-20T03:26:29.026Z · data_change
Index 16 → 16; severity medium → medium; version 5 → 5.
2026-09-20T03:21:11.931Z · data_change
Index 16 → 16; severity medium → medium; version 5 → 5.
2026-09-20T03:15:53.287Z · data_change
Index 16 → 16; severity medium → medium; version 5 → 5.
2026-09-20T03:10:34.981Z · data_change
Index 16 → 16; severity medium → medium; version 5 → 5.
2026-09-20T03:05:16.217Z · data_change
Index 16 → 16; severity medium → medium; version 5 → 5.
2026-09-20T02:54:38.723Z · data_change
Index 16 → 16; severity medium → medium; version 5 → 5.
2026-09-20T02:49:21.821Z · data_change
Index 16 → 16; severity medium → medium; version 5 → 5.
2026-09-20T02:44:03.968Z · data_change
Index 16 → 16; severity medium → medium; version 5 → 5.
2026-09-20T02:38:46.232Z · data_change
Index 16 → 16; severity medium → medium; version 5 → 5.
2026-09-20T02:33:20.168Z · data_change
Index 16 → 16; severity medium → medium; version 5 → 5.
2026-09-20T02:28:02.482Z · data_change
Index 16 → 16; severity medium → medium; version 5 → 5.
2026-09-20T02:22:44.482Z · data_change
Index 16 → 16; severity medium → medium; version 5 → 5.
2026-09-20T02:17:25.901Z · data_change
Index 16 → 16; severity medium → medium; version 5 → 5.
2026-09-20T02:06:52.294Z · data_change
Index 16 → 16; severity medium → medium; version 5 → 5.
2026-09-20T02:01:34.683Z · data_change
Index 16 → 16; severity medium → medium; version 5 → 5.
2026-09-20T01:56:17.295Z · data_change
Index 16 → 16; severity medium → medium; version 5 → 5.
2026-09-20T01:51:00.437Z · data_change
Index 16 → 16; severity medium → medium; version 5 → 5.
2026-09-20T01:45:42.389Z · data_change
Index 16 → 16; severity medium → medium; version 5 → 5.
2026-09-20T01:40:25.527Z · data_change
Index 16 → 16; severity medium → medium; version 5 → 5.
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Watch |
| Urgency | Future |
| Certainty | Possible |
| AreaDesc | Cheyenne, CO; Kit Carson, CO; Greeley, KS; Logan, KS; Sherman, KS; Thomas, KS; Wallace, KS; Wichita, KS |
| Headline | Severe Thunderstorm Watch issued September 19 at 3:28PM MDT until September 19 at 10:00PM MDT by NWS Goodland KS |
| Expires | 2026-09-19T22:00:00-06:00 |
| SenderName | NWS Goodland KS |
| HasExactCoords | false |
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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