Special Marine Warning issued March 10 at 8:12PM EDT until March 10 at 9:15PM EDT by NWS Grand Rapids MI
Geographic Context
This weather event occurred near Holland (approximately 34 km away) in United States, an area that experiences a range of natural hazards. An estimated 113.9K 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 medium severity. Calamity.live has classified it as "medium" severity with a severity value of 50. The computed Calamity Score is 37 out of 100, suggesting contained impact at this time. The primary scoring components are: population (70), intensity (35), historical (18). Data for this event was sourced from noaa, 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 | medium |
| Severity Value | 50 |
| Calamity Score | 37 / 100 |
| Confidence | 78% |
| Coordinates | 42.8350, -86.5283 |
| Nearest City | Holland (34 km) |
| Population Exposed | 113.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-11T00:12:00.000Z |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | South Haven to Holland MI; Holland to Grand Haven MI; Grand Haven to Whitehall MI; Lake Michigan from Grand Haven to Whitehall MI 5NM offshore to Mid Lake; Lake Michigan from Holland to Grand Haven MI 5NM offshore to Mid Lake; Lake Michigan from South Haven to Holland MI 5NM offshore to Mid lake |
| Headline | Special Marine Warning issued March 10 at 8:12PM EDT until March 10 at 9:15PM EDT by NWS Grand Rapids MI |
| Expires | 2026-03-10T21:15:00-04:00 |
| SenderName | NWS Grand Rapids MI |
| HasExactCoords | true |
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 37/100, near Holland (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 197 scientific monitoring sources.