Calamity
CriticalSevere WeatherCalamity Score: 67

Severe Weather in United States

MadisonUnited StatesNOAA

Right now

The most recent data we hold from NOAA arrived 2 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 6 June 2026 at 04:15 UTC. It is kept here as a record.

No stronger detection stands among the 21 recorded within 20 km of this point since 15 April 2026 — 3 others scored the same. Another comparable one was recorded here earlier the same day. 3 more were recorded here in the fortnight before it.

What the source measured

NOAA reported: Tornado Warning issued June 5 at 10:30PM CDT until June 5 at 11:15PM CDT by NWS Des Moines IA

An estimated 158,079 people live within 50 km of this point.

Nearby, since 15 April 2026

How we know

One source: NOAA. Not yet confirmed by a second, independent source.

Our own score for this event is 67 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 v1. Rows carrying other versions were judged by different rules and are not directly comparable.

Event Data

TypeSevere Weather
SeverityCritical
Calamity Score (ours)67 / 100
Our confidence81%
Coordinates41.2800, -94.0350
Nearest CityWaukee (39 km)
Population Exposed158.1K within 50 km
Impact Tiersevere
Timestamp2026-06-06T03:30:00.000Z
Sourcehttps://api.weather.gov/alerts/merged_Tornado Warning_noaa_urn:oid:2.49.0.1.840.0.17b6c29e7ca5d3d35a6f0292f5f466f1

Score Breakdown

95
intensity
70
population
0
cascading
80
historical

Technical Details

EventTornado Warning
UrgencyImmediate
CertaintyObserved
AreaDescMarion, IA; Warren, IA; Adair, IA; Adams, IA; Cass, IA
HeadlineTornado Warning issued June 5 at 10:30PM CDT until June 5 at 11:15PM CDT by NWS Des Moines IA
Expires2026-06-05T23:15:00-05:00
SenderNameNWS Des Moines IA
HasExactCoordstrue
MergedCount2
MergedIds["noaa_urn:oid:2.49.0.1.840.0.17b6c29e7ca5d3d35a6f0292f5f466f1cb562323.001.1","noaa_urn:oid:2.49.0.1.840.0.4c2984344ca37b9f91e299c3eebbf7e8992ee193.001.1"]

Safety Information

If a tornado warning is issued: go to a basement or an interior room on the lowest floor, away from windows. A vehicle and a mobile home are not shelter. Cover your head and neck. Wait for the official all-clear before going outside, and watch for downed power lines and gas leaks afterwards.

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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