This alert expired on 17 March 2026 at 06:00 UTC. It is kept here as a record.
It is the 11th strongest of the 134 detections recorded within 20 km of this point since 10 March 2026. The last comparable one was on 16 March 2026. 21 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Heavy Freezing Spray Warning issued March 16 at 9:48PM CDT until March 17 at 1:00AM CDT by NWS Duluth MN
Nearby, since 10 March 2026
- August 11, 2026 · score 22 · 0.0 km
- August 9, 2026 · score 22 · 0.0 km
- August 8, 2026 · score 22 · 0.0 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 22 out of 100, at 64 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 22 / 100 |
| Our confidence | 64% |
| Coordinates | 43.8000, -89.6000 |
| Nearest City | Wisconsin Rapids (67 km) |
| Impact Tier | minor |
| Timestamp | 2026-03-17T02:48:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.aebdf01612f2efdec716c8737a5e721c58710bee.002.1 |
Score Breakdown
Technical Details
| Event | Heavy Freezing Spray Warning |
| Urgency | Expected |
| Certainty | Likely |
| AreaDesc | Port Wing to Sand Island WI |
| Headline | Heavy Freezing Spray Warning issued March 16 at 9:48PM CDT until March 17 at 1:00AM CDT by NWS Duluth MN |
| Expires | 2026-03-17T01:00:00-05:00 |
| SenderName | NWS Duluth MN |
| HasExactCoords | false |
| Iem TypeSummary | S |
| Iem Magnitude | 13.5 |
| Iem Unit | Inch |
| Iem City | Neshkoro |
| Iem County | Marquette |
| Iem State | WI |
| Iem Wfo | MKX |
| MergedSources | [{"id":"iem_S_43.970_-89.210_1773696600000","source":"iem","severity":"low","severityValue":25,"timestamp":1773696600000,"latitude":43.97,"longitude":-89.21}] |
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.
Want to know when something happens in this area?
Calamity.live data shows a weather event with CalamityScore 22/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.