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.
12 other detections within 20 km in the last 24 hours, the nearest 1 km from here.
This alert expired on 20 September 2026 at 08:15 UTC. It is kept here as a record.
It is the 21st strongest of the 122 detections recorded within 20 km of this point since 10 March 2026. Another comparable one was recorded here earlier the same day. 8 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 20 at 2:33AM CDT until September 20 at 3:15AM CDT by NWS Quad Cities IA IL
Urban PEI: 290,770 within a heuristic 50 km radius; not unique people.
Nearby, since 10 March 2026
- March 10, 2026 · score 44 · 5.6 km
- July 5, 2026 · score 43 · 10.0 km
- July 20, 2026 · score 43 · 13.2 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 37 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) | 37 / 100 |
| Legacy data-support index | 0.81/1 |
| Coordinates | 41.5571, -90.6529 |
| Nearest City | Davenport (7 km) |
| Urban exposure index (PEI) | 290.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-20T07:33:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.6bfe5cb635e26c2fccb7977d4fee2361e8a5d028.001.1 |
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: 2026-09-20T07:33:00.000Z.
First archived: 2026-09-20T07:37:34.887Z. 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 | Rock Island, IL; Whiteside, IL; Clinton, IA; Muscatine, IA; Scott, IA |
| Headline | Severe Thunderstorm Warning issued September 20 at 2:33AM CDT until September 20 at 3:15AM CDT by NWS Quad Cities IA IL |
| Expires | 2026-09-20T03:15:00-05:00 |
| SenderName | NWS Quad Cities IA IL |
| HasExactCoords | true |
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.
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