Reported by SPC 168 days ago.
No stronger detection stands among the 135 recorded within 20 km of this point since 11 March 2026 — 89 others scored the same. Another comparable one was recorded here earlier the same day. 16 more were recorded here in the fortnight before it.
What the source measured
SPC reported: Hail 150 in near 2 S Hills, Johnson, IA. penny to ping pong. (DVN)
An estimated 134,727 people live within 50 km of this point.
Nearby, since 11 March 2026
- March 16, 2026 · score 49 · 0.0 km
- March 11, 2026 · score 49 · 12.2 km
- March 11, 2026 · score 49 · 14.0 km
How we know
One source: SPC. Not yet confirmed by a second, independent source.
Our own score for this event is 49 out of 100, at 68 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | high |
| Calamity Score (ours) | 49 / 100 |
| Our confidence | 68% |
| Coordinates | 41.5500, -91.5300 |
| Nearest City | Iowa City (12 km) |
| Population Exposed | 134.7K within 50 km |
| Impact Tier | severe |
| Timestamp | 2026-03-15T14:30:00.000Z |
| Source | https://www.spc.noaa.gov/climo/reports/today.html |
Score Breakdown
Technical Details
| ReportType | hail |
| Speed | 150 |
| Location | 2 S Hills |
| County | Johnson |
| State | IA |
| Comments | penny to ping pong. (DVN) |
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 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.
Calamity.live data shows a weather event with CalamityScore 49/100, near Iowa City (United States), based on data from spc. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.