Right now
The most recent data we hold from NOAA arrived 65 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 18:00 UTC. It is kept here as a record.
It is the 2nd strongest of the 31 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 6 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 1 at 1:23PM EDT until July 1 at 2:00PM EDT by NWS Grand Rapids MI
Nearby, since 16 March 2026
- July 1, 2026 · score 22 · 15.4 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 | 44.5408, -84.0108 |
| Nearest City | Midland (104 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-07-01T17:23:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.f79baef9504f644c319437d4b0d8c88b |
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: 2026-07-01T17:23:00.000Z.
First archived: 2026-07-01T17:36:51.410Z. 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; Arenac, MI; Gladwin, MI; Ogemaw, MI; Roscommon, MI; Alpena, MI; Presque Isle, MI and 1 more areas |
| Headline | Severe Thunderstorm Warning issued July 1 at 1:23PM EDT until July 1 at 2:00PM EDT by NWS Grand Rapids MI |
| Expires | 2026-07-01T14:00:00-04:00 |
| SenderName | NWS Grand Rapids MI |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.f79baef9504f644c319437d4b0d8c88bc54be2f8.001.1","noaa_urn:oid:2.49.0.1.840.0.1da60663fd1140003c95fc656cf9abc1fa8859f5.001.1","noaa_urn:oid:2.49.0.1.840.0.4c994d659672cdced09f64d237b206b0709ad6f7.001.1","noaa_urn:oid:2.49.0.1.840.0.5fb33aaa43ae3c9e425816c873464c5309b9ec59.001.1"] |
| Iem TypeSummary | D |
| Iem City | 1 S Sparr |
| Iem County | Otsego |
| Iem State | MI |
| Iem Wfo | APX |
| Iem Remark | Trees down at Sparr Rd. and Marquardt Rd. |
| MergedSources | [{"id":"iem_D_45.040_-84.580_1782923400000","source":"iem","severity":"low","severityValue":25,"timestamp":1782923400000,"latitude":45.04,"longitude":-84.58}] |
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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