Right now
The most recent data we hold from NOAA arrived 3 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 2 July 2026 at 18:30 UTC. It is kept here as a record.
It is the 2nd strongest of the 27 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 5 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 2 at 12:58PM CDT until July 2 at 1:30PM CDT by NWS La Crosse WI
An estimated 27,366 people live within 50 km of this point.
Nearby, since 16 March 2026
- June 28, 2026 · score 34 · 5.7 km
- August 7, 2026 · score 34 · 14.4 km
How we know
Confirmed by 3 independent sources, including NOAA.
Our own score for this event is 34 out of 100, at 91 % 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) | 34 / 100 |
| Our confidence | 91% |
| Coordinates | 43.0620, -92.8340 |
| Nearest City | Mason City (31 km) |
| Population Exposed | 27.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-02T17:58:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.3617ef9b92b46e2f9f557a74458cf80562a82923.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Floyd, IA |
| Headline | Severe Thunderstorm Warning issued July 2 at 12:58PM CDT until July 2 at 1:30PM CDT by NWS La Crosse WI |
| Expires | 2026-07-02T13:30:00-05:00 |
| SenderName | NWS La Crosse WI |
| HasExactCoords | true |
| Iem TypeSummary | G |
| Iem Magnitude | 72 |
| Iem Unit | MPH |
| Iem City | 6 SE Mason City |
| Iem County | Cerro Gordo |
| Iem State | IA |
| Iem Wfo | DMX |
| Iem Remark | PWS gust with a sustained 58mph. |
| MergedSources | [{"id":"iem_G_43.140_-93.200_1783012500000","source":"iem","severity":"low","severityValue":25,"timestamp":1783012500000,"latitude":43.14,"longitude":-93.2},{"id":"iem_G_43.090_-93.120_1783013100000","source":"iem","severity":"low","severityValue":25,"timestamp":1783013100000,"latitude":43.09,"longitude":-93.12}] |
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 in this area?
Calamity.live data shows a weather event with CalamityScore 34/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.