Right now
The most recent data we hold from NOAA arrived 7 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 8 August 2026 at 00:30 UTC. It is kept here as a record.
It is the 10th strongest of the 43 detections recorded within 20 km of this point since 2 April 2026. The last comparable one was on 5 August 2026. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued August 7 at 6:39PM CDT until August 7 at 7:30PM CDT by NWS Quad Cities IA IL
Nearby, since 2 April 2026
- August 7, 2026 · score 22 · 5.0 km
- June 11, 2026 · score 58 · 14.5 km
How we know
9 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 22 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) | 22 / 100 |
| Legacy data-support index | 0.67/1 |
| Coordinates | 41.6686, -92.2257 |
| Nearest City | North Liberty (53 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-08-07T23:39:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.8cb72b86747818bbd70cb1a9f2471a5bf765bb55.001.1 |
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: 2026-08-07T23:39:00.000Z.
First archived: 2026-08-07T23:52:03.200Z. 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 | Iowa, IA |
| Headline | Severe Thunderstorm Warning issued August 7 at 6:39PM CDT until August 7 at 7:30PM CDT by NWS Quad Cities IA IL |
| Expires | 2026-08-07T19:30:00-05:00 |
| SenderName | NWS Quad Cities IA IL |
| HasExactCoords | true |
| Iem TypeSummary | G |
| Iem Magnitude | 60 |
| Iem Unit | MPH |
| Iem City | 2 W Marion |
| Iem County | Linn |
| Iem State | IA |
| Iem Wfo | DVN |
| MergedSources | [{"id":"iem_G_42.000_-91.660_1786142100000","source":"iem","severity":"low","severityValue":25,"timestamp":1786142100000,"latitude":42,"longitude":-91.66},{"id":"iem_G_42.050_-91.600_1786141680000","source":"iem","severity":"low","severityValue":25,"timestamp":1786141680000,"latitude":42.05,"longitude":-91.6},{"id":"iem_D_42.230_-91.930_1786140600000","source":"iem","severity":"low","severityValue":25,"timestamp":1786140600000,"latitude":42.23,"longitude":-91.93},{"id":"iem_G_42.050_-91.640_1786141560000","source":"iem","severity":"low","severityValue":25,"timestamp":1786141560000,"latitude":42.05,"longitude":-91.64},{"id":"iem_G_42.030_-91.640_1786142340000","source":"iem","severity":"low","severityValue":25,"timestamp":1786142340000,"latitude":42.03,"longitude":-91.64},{"id":"iem_G_42.120_-91.890_1786141140000","source":"iem","severity":"low","severityValue":25,"timestamp":1786141140000,"latitude":42.12,"longitude":-91.89},{"id":"iem_G_42.050_-91.680_1786141320000","source":"iem","severity":"low","severityValue":25,"timestamp":1786141320000,"latitude":42.05,"longitude":-91.68},{"id":"iem_G_42.030_-91.620_1786142460000","source":"iem","severity":"low","severityValue":25,"timestamp":1786142460000,"latitude":42.03,"longitude":-91.62}] |
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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