Right now
The most recent data we hold from NOAA arrived 2 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 15 March 2026 at 20:30 UTC. It is kept here as a record.
It is the 35th strongest of the 186 detections recorded within 20 km of this point since 15 March 2026. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Heavy Freezing Spray Warning issued March 15 at 3:27AM CDT until March 16 at 12:00PM CDT by NWS Duluth MN
An estimated 16,788 people live within 50 km of this point.
Nearby, since 15 March 2026
- September 4, 2026 · score 28 · 0.0 km
- September 3, 2026 · score 28 · 0.0 km
- September 2, 2026 · score 28 · 0.0 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 34 out of 100, at 84 % 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) | 34 / 100 |
| Our confidence | 84% |
| Coordinates | 46.0000, -94.3000 |
| Nearest City | Sartell (43 km) |
| Population Exposed | 16.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-15T12:00:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Heavy-Freezing-Spray-Warning_noaa_urn-oid-2_49_0_1_840_0_ffc73fde34fd7ed9491cf923f53925f2 |
Score Breakdown
Technical Details
| Event | Heavy Freezing Spray Warning |
| Urgency | Expected |
| Certainty | Likely |
| AreaDesc | Silver Bay Harbor to Two Harbors MN; Two Harbors to Duluth MN; Duluth MN to Port Wing WI; Port Wing to Sand Island WI; Grand Portage to Grand Marais MN; Grand Marais to Taconite Harbor MN and 2 more areas |
| Headline | Heavy Freezing Spray Warning issued March 15 at 3:27AM CDT until March 16 at 12:00PM CDT by NWS Duluth MN |
| Expires | 2026-03-15T15:30:00-05:00 |
| SenderName | NWS Duluth MN |
| HasExactCoords | false |
| MergedCount | 5 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.ffc73fde34fd7ed9491cf923f53925f254d8f202.004.2","noaa_urn:oid:2.49.0.1.840.0.ffc73fde34fd7ed9491cf923f53925f254d8f202.001.2","noaa_urn:oid:2.49.0.1.840.0.ffc73fde34fd7ed9491cf923f53925f254d8f202.002.2","noaa_urn:oid:2.49.0.1.840.0.ffc73fde34fd7ed9491cf923f53925f254d8f202.003.2","noaa_urn:oid:2.49.0.1.840.0.d7ad03b868745afe8ec55d1e9b8356fcb48535d5.002.2"] |
| Iem TypeSummary | S |
| Iem Magnitude | 3 |
| Iem Unit | Inch |
| Iem City | Nisswa |
| Iem County | Crow Wing |
| Iem State | MN |
| Iem Wfo | DLH |
| Iem Remark | Report sent in via social media. |
| MergedSources | [{"id":"iem_S_46.510_-94.290_1773573300000","source":"iem","severity":"low","severityValue":25,"timestamp":1773573300000,"latitude":46.51,"longitude":-94.29}] |
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 in this area?
Calamity.live data shows a weather event with CalamityScore 34/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.