Right now
The most recent data we hold from NOAA arrived 61 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 1 June 2026 at 20:15 UTC. It is kept here as a record.
It is the 2nd strongest of the 142 detections recorded within 20 km of this point since 15 March 2026. Another comparable one was recorded here earlier the same day. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 1 at 2:00PM MDT until June 1 at 2:15PM MDT by NWS Denver CO
Urban PEI: 1,856,876 within a heuristic 50 km radius; not unique people.
Nearby, since 15 March 2026
- August 16, 2026 · score 52 · 7.6 km
- June 3, 2026 · score 46 · 11.8 km
- June 1, 2026 · score 52 · 13.6 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 52 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 v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 52 / 100 |
| Legacy data-support index | 0.80/1 |
| Coordinates | 39.4586, -104.6639 |
| Nearest City | Parker (11 km) |
| Urban exposure index (PEI) | 1.9M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-01T20:00:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.331b47bfdbadcd7010f530a81bf118a3 |
Physical priority index · v1. 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: 2026-06-01T20:00:00.000Z.
First archived: 2026-06-01T20:03:14.753Z. 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
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Western Arapahoe, CO; Denver, CO; Douglas, CO; Western Arapahoe, CO; Central Arapahoe, CO; Douglas, CO; Elbert, CO and 2 more areas |
| Headline | Severe Thunderstorm Warning issued June 1 at 2:00PM MDT until June 1 at 2:15PM MDT by NWS Denver CO |
| Expires | 2026-06-01T14:15:00-06:00 |
| SenderName | NWS Denver CO |
| HasExactCoords | true |
| MergedCount | 5 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.331b47bfdbadcd7010f530a81bf118a391bce719.001.1","noaa_urn:oid:2.49.0.1.840.0.cbf202881cd4cdf2047de670cf5038816e90e721.001.1","noaa_urn:oid:2.49.0.1.840.0.f72d33761b8795c8812975d0e34686e9d3d053ea.001.1","noaa_urn:oid:2.49.0.1.840.0.8143fef81135481d27ea39c044736b131f525cf0.001.1","noaa_urn:oid:2.49.0.1.840.0.4453fc17b7c089241364edfa79a9deb3f79fa231.001.1"] |
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.
Want to know when something happens near Parker?