Hail 100 in near Groton, Brown, SD. (ABR)
Geographic Context
This weather event occurred near Aberdeen (approximately 30 km away) in United States, an area that experiences a range of natural hazards. An estimated 28.1K people live within 50 km of the event location, placing this in the "significant" population impact tier.
Event Assessment
This event is a weather event classified as high severity. Calamity.live has classified it as "high" severity with a severity value of 65. The computed Calamity Score is 40 out of 100, reflecting a moderate-impact event. The primary scoring components are: historical (80), intensity (50), population (40). Data for this event was sourced from spc, one of the 250 scientific monitoring sources aggregated by Calamity.live.
Regional Monitoring Context
United States has a documented history of weather events. Monitoring for weather events in the region relies on a combination of ground-based sensors, satellite remote sensing, and official reporting from national agencies. The frequency and severity of such events are tracked over time to support risk assessment and emergency preparedness.
Event Data
| Type | Weather |
| Severity | high |
| Severity Value | 65 |
| Calamity Score | 40 / 100 |
| Confidence | 86% |
| Coordinates | 45.4500, -98.1000 |
| Nearest City | Aberdeen (30 km) |
| Population Exposed | 28.1K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-29T13:04:00.000Z |
| Source | https://www.spc.noaa.gov/climo/reports/today.html |
Score Breakdown
Technical Details
| ReportType | hail |
| Speed | 100 |
| Location | Groton |
| County | Brown |
| State | SD |
| Comments | (ABR) |
| Iem TypeSummary | N |
| Iem Magnitude | 68 |
| Iem Unit | MPH |
| Iem City | 2 SW Westport |
| Iem County | Brown |
| Iem State | SD |
| Iem Wfo | ABR |
| Iem Remark | Wake low winds. |
| MergedSources | [{"id":"iem_N_45.650_-98.500_1782739980000","source":"iem","severity":"low","severityValue":25,"timestamp":1782739980000,"latitude":45.65,"longitude":-98.5},{"id":"iem_H_45.450_-98.100_1782738240000","source":"iem","severity":"low","severityValue":25,"timestamp":1782738240000,"latitude":45.45,"longitude":-98.1},{"id":"iem_N_45.630_-98.520_1782739500000","source":"iem","severity":"low","severityValue":25,"timestamp":1782739500000,"latitude":45.63,"longitude":-98.52}] |
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.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
Calamity.live data shows a weather event with CalamityScore 40/100, near Aberdeen (United States), based on data from spc. Source: Calamity.live, a platform aggregating real-time data from 197 scientific monitoring sources.