Right now
The most recent data we hold from NOAA arrived 6 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 1 July 2026 at 18:01 UTC. It is kept here as a record.
No stronger detection stands among the 31 recorded within 20 km of this point since 15 March 2026 — 13 others scored the same. Another comparable one was recorded here earlier the same day. 7 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 1 at 1:52PM EDT until July 1 at 2:00PM EDT by NWS Grand Rapids MI
Nearby, since 15 March 2026
- June 16, 2026 · score 22 · 16.2 km
How we know
2 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 22 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
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) | 22 / 100 |
| Legacy data-support index | 0.66/1 |
| Coordinates | 44.4088, -84.0696 |
| Nearest City | Midland (89 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Date | 2026-07-01 — time not reported by the source |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.98a3b89fe0573566186d11661095452b |
Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-07-01 — time not reported.
First archived: 2026-07-01T17:52:53.875Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Clare, MI; Alpena, MI; Presque Isle, MI; Alcona, MI; Arenac, MI; Iosco, MI; Ogemaw, MI and 1 more areas |
| Headline | Severe Thunderstorm Warning issued July 1 at 1:52PM EDT until July 1 at 2:00PM EDT by NWS Grand Rapids MI |
| Expires | 2026-07-01T14:01:00-04:00 |
| SenderName | NWS Grand Rapids MI |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.98a3b89fe0573566186d11661095452b4fba875d.001.1","noaa_urn:oid:2.49.0.1.840.0.353ed1e245f7e00876ba1094b2280b1965835369.001.1","noaa_urn:oid:2.49.0.1.840.0.67b2bb598cccc789f4668a491a0fec15ab982dec.001.1","noaa_urn:oid:2.49.0.1.840.0.1da60663fd1140003c95fc656cf9abc1fa8859f5.001.1"] |
| Iem TypeSummary | D |
| Iem City | 2 ENE South Branch |
| Iem County | Iosco |
| Iem State | MI |
| Iem Wfo | APX |
| Iem Remark | Power lines down. |
| MergedSources | [{"id":"iem_D_44.480_-83.850_1782926100000","source":"iem","severity":"low","severityValue":25,"timestamp":1782926100000,"latitude":44.48,"longitude":-83.85}] |
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.
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