Right now
The most recent data we hold from NOAA arrived 5 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
This alert expired on 2 July 2026 at 23:00 UTC. It is kept here as a record.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 2 at 5:10PM CDT until July 2 at 6:00PM CDT by NWS Des Moines IA
Urban PEI: 65,060 within a heuristic 50 km radius; not unique people.
How we know
3 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 39 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) | 39 / 100 |
| Legacy data-support index | 0.88/1 |
| Coordinates | 42.2128, -93.6707 |
| Nearest City | Ames (21 km) |
| Urban exposure index (PEI) | 65.1K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-02T22:10:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.6446da786e10155366036b6854e049c8 |
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: 2026-07-02T22:10:00.000Z.
First archived: 2026-07-02T22:11:46.635Z. 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 | Calhoun, IA; Webster, IA; Hamilton, IA; Webster, IA; Wright, IA; Franklin, IA; Grundy, IA; Hardin, IA; Marshall, IA and 2 more areas |
| Headline | Severe Thunderstorm Warning issued July 2 at 5:10PM CDT until July 2 at 6:00PM CDT by NWS Des Moines IA |
| Expires | 2026-07-02T18:00:00-05:00 |
| SenderName | NWS Des Moines IA |
| HasExactCoords | true |
| MergedCount | 6 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.6446da786e10155366036b6854e049c867054faf.001.1","noaa_urn:oid:2.49.0.1.840.0.c05d264b3178bb471ea8737a49bf359f3be8319b.001.1","noaa_urn:oid:2.49.0.1.840.0.4a383b700207ff47f6d5d7949a3ef397ca2ceacc.001.1","noaa_urn:oid:2.49.0.1.840.0.de4d9d12d3f7290a28e2138bf22807657b992f4d.001.1","noaa_urn:oid:2.49.0.1.840.0.e0f92a04efc6c7f56c0a55dfcb2b6a70f50772c1.001.1","noaa_urn:oid:2.49.0.1.840.0.297eb7bc30211be58912f001089675c8bc50f16e.001.1"] |
| Iem TypeSummary | H |
| Iem Magnitude | 1.5 |
| Iem Unit | Inch |
| Iem City | 1 WNW Gowrie |
| Iem County | Webster |
| Iem State | IA |
| Iem Wfo | DMX |
| MergedSources | [{"id":"iem_H_42.280_-94.290_1783026060000","source":"iem","severity":"low","severityValue":25,"timestamp":1783026060000,"latitude":42.28,"longitude":-94.29},{"id":"iem_H_42.280_-94.300_1783025760000","source":"iem","severity":"low","severityValue":25,"timestamp":1783025760000,"latitude":42.28,"longitude":-94.3}] |
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.
Review the area, threshold and delivery channel in your account.
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