Right now
The most recent data we hold from NOAA arrived 54 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 19 May 2026 at 01:34 UTC. It is kept here as a record.
It is the 5th strongest of the 36 detections recorded within 20 km of this point since 15 April 2026. Another comparable one was recorded here earlier the same day. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 18 at 8:25PM CDT until May 18 at 8:30PM CDT by NWS Des Moines IA
An estimated 540,179 people live within 50 km of this point.
Nearby, since 15 April 2026
- July 3, 2026 · score 48 · 3.4 km
- August 13, 2026 · score 43 · 9.0 km
- July 20, 2026 · score 41 · 10.2 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 48 out of 100, at 80 % 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) | 48 / 100 |
| Our confidence | 80% |
| Coordinates | 41.7942, -93.2158 |
| Nearest City | Newton (17 km) |
| Population Exposed | 540.2K within 50 km |
| Impact Tier | significant |
| Date | 2026-05-19 — time not reported by the source |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.33c59d03e283196ab9d0b4ca8b7c220a |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Jasper, IA; Polk, IA; Jasper, IA; Marshall, IA; Polk, IA; Story, IA |
| Headline | Severe Thunderstorm Warning issued May 18 at 8:25PM CDT until May 18 at 8:30PM CDT by NWS Des Moines IA |
| Expires | 2026-05-18T20:34:00-05:00 |
| SenderName | NWS Des Moines IA |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.33c59d03e283196ab9d0b4ca8b7c220a86d7151e.001.1","noaa_urn:oid:2.49.0.1.840.0.cc9e2d9f6d3808444a88257e783ffd1f8b96fab3.001.1"] |
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 Newton?
Calamity.live data shows a weather event with CalamityScore 48/100, near Newton (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.