This alert expired on 12 June 2026 at 02:00 UTC. It is kept here as a record.
It is the 8th strongest of the 23 detections recorded within 20 km of this point since 16 March 2026. The last comparable one was on 10 June 2026. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued June 11 at 2:56PM CDT until June 11 at 9:00PM CDT by NWS Quad Cities IA IL
An estimated 58,799 people live within 50 km of this point.
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 32 out of 100, at 80 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 32 / 100 |
| Our confidence | 80% |
| Coordinates | 42.4573, -90.6980 |
| Nearest City | Dubuque (6 km) |
| Population Exposed | 58.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-11T19:56:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.8980c9e6b1daa6a8eb5df46d015cb97614fce6a2.001.1 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Dubuque, IA |
| Headline | Flash Flood Warning issued June 11 at 2:56PM CDT until June 11 at 9:00PM CDT by NWS Quad Cities IA IL |
| Expires | 2026-06-11T21:00:00-05:00 |
| SenderName | NWS Quad Cities IA IL |
| HasExactCoords | true |
Safety Information
During flooding: never walk, swim, or drive through floodwaters. Six inches of moving water can knock you down, and one foot of water can sweep away a vehicle. Move to higher ground if waters rise. After flooding, avoid contact with floodwater which may contain sewage, chemicals, or debris. Follow local emergency service guidance.
Series begins 10 February 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 Dubuque?
Calamity.live data shows a weather event with CalamityScore 32/100, near Dubuque (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.