Right now
The most recent data we hold from NOAA arrived 6 minutes ago, and this point is in it.
5 other detections within 20 km in the last 24 hours, the nearest 20 km from here.
This alert is in force until 9 September 2026, 03:15 UTC.
It is the 49th strongest of the 97 detections recorded within 20 km of this point since 11 March 2026. Another comparable one was recorded here earlier the same day.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 8 at 9:07PM CDT until September 8 at 10:15PM CDT by NWS Quad Cities IA IL
An estimated 278,494 people live within 50 km of this point.
Nearby, since 11 March 2026
- August 12, 2026 · score 43 · 6.6 km
- July 7, 2026 · score 43 · 7.9 km
- July 4, 2026 · score 43 · 9.5 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, at 81 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v4. 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 |
| Our confidence | 81% |
| Coordinates | 41.8024, -91.4537 |
| Nearest City | North Liberty (13 km) |
| Population Exposed | 278.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-09T02:07:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.eb194da1a32316fae3f4f654a9d8b12bb852773a.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Cedar, IA; Johnson, IA; Jones, IA; Linn, IA; Muscatine, IA; Benton, IA; Iowa, IA; Johnson, IA; Linn, IA |
| Headline | Severe Thunderstorm Warning issued September 8 at 9:07PM CDT until September 8 at 10:15PM CDT by NWS Quad Cities IA IL |
| Expires | 2026-09-08T22:15:00-05:00 |
| SenderName | NWS Quad Cities IA IL |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.eb194da1a32316fae3f4f654a9d8b12bb852773a.001.1","noaa_urn:oid:2.49.0.1.840.0.3ab9c959cb07243cbab035a2816d0b39b2b8e267.002.1"] |
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.
Want to know when something happens near North Liberty?