Right now
The most recent data we hold from NOAA arrived 21 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 16 March 2026 at 14:30 UTC. It is kept here as a record.
It is the 129th strongest of the 186 detections recorded within 20 km of this point since 15 March 2026. Another comparable one was recorded here earlier the same day. 20 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Heavy Freezing Spray Warning issued March 15 at 10:27PM EDT until March 17 at 2:00AM EDT by NWS Marquette MI
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
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 28 out of 100, at 77 % 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) | 28 / 100 |
| Our confidence | 77% |
| Coordinates | 46.0000, -94.3000 |
| Nearest City | Sartell (43 km) |
| Population Exposed | 16.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-16T02:27:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Heavy Freezing Spray Warning_noaa_urn:oid:2.49.0.1.840.0.2406246bbbc51b821af7406d9c6735e0 |
Score Breakdown
Technical Details
| Event | Heavy Freezing Spray Warning |
| Urgency | Expected |
| Certainty | Likely |
| AreaDesc | Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM; Silver Bay Harbor to Two Harbors MN; Two Harbors to Duluth MN; Duluth MN to Port Wing WI; Port Wing to Sand Island WI; Taconite Harbor to Silver Bay Harbor MN; Sand Island to Bayfield WI; Oak Point to Saxon Harbor WI; Outer Apostle Islands Beyond 5 NM from Mainland and 2 more areas |
| Headline | Heavy Freezing Spray Warning issued March 15 at 10:27PM EDT until March 17 at 2:00AM EDT by NWS Marquette MI |
| Expires | 2026-03-16T10:30:00-04:00 |
| SenderName | NWS Marquette MI |
| HasExactCoords | false |
| MergedCount | 5 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.2406246bbbc51b821af7406d9c6735e034356d4c.001.2","noaa_urn:oid:2.49.0.1.840.0.0716c196c94008178fdab7e661b2b79cfe02d133.004.2","noaa_urn:oid:2.49.0.1.840.0.0716c196c94008178fdab7e661b2b79cfe02d133.003.2","noaa_urn:oid:2.49.0.1.840.0.0716c196c94008178fdab7e661b2b79cfe02d133.002.2","noaa_urn:oid:2.49.0.1.840.0.0716c196c94008178fdab7e661b2b79cfe02d133.001.2"] |
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 28/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.