Right now
The most recent data we hold from NOAA arrived 4 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 16 May 2026 at 04:16 UTC. It is kept here as a record.
It is the 42nd strongest of the 57 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 15 at 11:07PM CDT until May 15 at 11:15PM CDT by NWS Quad Cities IA IL
Nearby, since 16 March 2026
- September 4, 2026 · score 28 · 11.0 km
- May 16, 2026 · score 22 · 19.5 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 22 out of 100, at 65 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
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 |
| Our confidence | 65% |
| Coordinates | 42.8282, -91.4122 |
| Nearest City | Dubuque (72 km) |
| Impact Tier | minor |
| Timestamp | 2026-05-16T04:07:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.4eed81046cf8a15061344cf07bbf9a9e |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Buchanan, IA; Clayton, IA; Allamakee, IA; Clayton, IA and 3 more areas |
| Headline | Severe Thunderstorm Warning issued May 15 at 11:07PM CDT until May 15 at 11:15PM CDT by NWS Quad Cities IA IL |
| Expires | 2026-05-15T23:16:00-05:00 |
| SenderName | NWS Quad Cities IA IL |
| HasExactCoords | true |
| MergedCount | 7 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.4eed81046cf8a15061344cf07bbf9a9eb5a7defe.001.1","noaa_urn:oid:2.49.0.1.840.0.ccc3b1621c4460ba94304fa44964ee9d278ac6a8.001.1","noaa_urn:oid:2.49.0.1.840.0.de77772d6ab9cb3200f18f45eba3e7a25b52a6f8.001.1","noaa_urn:oid:2.49.0.1.840.0.71edd74b1af35a13d5de924e805d4d19bdf71f6c.001.1","noaa_urn:oid:2.49.0.1.840.0.262df2014e3f6689e3f6c3a0a06a5f9cb5762c64.001.1","noaa_urn:oid:2.49.0.1.840.0.c4a8c72115b9f4be43e00ceaf5ae3555d2b497b9.001.1","noaa_urn:oid:2.49.0.1.840.0.e0c964909b412b637faa8be7810c24c72ff702b3.001.1"] |
| Iem TypeSummary | G |
| Iem Magnitude | 50 |
| Iem Unit | MPH |
| Iem City | Oelwein |
| Iem County | Fayette |
| Iem State | IA |
| Iem Wfo | ARX |
| MergedSources | [{"id":"iem_G_42.670_-91.920_1778902740000","source":"iem","severity":"low","severityValue":25,"timestamp":1778902740000,"latitude":42.67,"longitude":-91.92}] |
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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Calamity.live data shows a weather event with CalamityScore 22/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.