Right now
The most recent data we hold from NOAA arrived 3 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
5 other detections within 20 km in the last 24 hours, the nearest 9 km from here.
This alert expired on 7 August 2026 at 23:15 UTC. It is kept here as a record.
No stronger detection stands among the 66 recorded within 20 km of this point since 10 March 2026 — 8 others scored the same. Another comparable one was recorded here earlier the same day. 15 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Warning issued August 7 at 5:31PM CDT until August 7 at 6:15PM CDT by NWS Quad Cities IA IL
Urban PEI: 183,666 within a heuristic 50 km radius; not unique people.
Nearby, since 10 March 2026
- September 20, 2026 · score 37 · 13.2 km
- March 11, 2026 · score 49 · 17.8 km
- March 10, 2026 · score 44 · 17.8 km
How we know
5 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 67 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 | Critical |
| Calamity Score (ours) | 67 / 100 |
| Legacy data-support index | 0.88/1 |
| Coordinates | 42.1210, -91.3613 |
| Nearest City | Marion (22 km) |
| Urban exposure index (PEI) | 183.7K within 50 km |
| Impact Tier | severe |
| Timestamp | 2026-08-07T22:31:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Tornado Warning_noaa_urn:oid:2.49.0.1.840.0.783dafb86cdaf789b12aba896d59566b |
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: 2026-08-07T22:31:00.000Z.
First archived: 2026-08-07T22:44:06.159Z. 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 | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Cedar, IA; Jones, IA; Linn, IA; Jones, IA; Linn, IA; Linn, IA |
| Headline | Tornado Warning issued August 7 at 5:31PM CDT until August 7 at 6:15PM CDT by NWS Quad Cities IA IL |
| Expires | 2026-08-07T18:15:00-05:00 |
| SenderName | NWS Quad Cities IA IL |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.783dafb86cdaf789b12aba896d59566ba83cf23b.001.1","noaa_urn:oid:2.49.0.1.840.0.296b310369b13fb3dd6ad326dcc433c09e824e82.002.1","noaa_urn:oid:2.49.0.1.840.0.2757cf0b4af942caa190d969922ccf346a3c70e3.002.1"] |
| Iem TypeSummary | G |
| Iem Magnitude | 70 |
| Iem Unit | MPH |
| Iem City | Ryan |
| Iem County | Delaware |
| Iem State | IA |
| Iem Wfo | DVN |
| MergedSources | [{"id":"iem_G_42.350_-91.480_1786140180000","source":"iem","severity":"low","severityValue":25,"timestamp":1786140180000,"latitude":42.35,"longitude":-91.48},{"id":"iem_H_42.350_-91.480_1786140840000","source":"iem","severity":"low","severityValue":25,"timestamp":1786140840000,"latitude":42.35,"longitude":-91.48},{"id":"iem_D_42.200_-91.520_1786141020000","source":"iem","severity":"low","severityValue":25,"timestamp":1786141020000,"latitude":42.2,"longitude":-91.52},{"id":"iem_G_42.350_-91.480_1786140420000","source":"iem","severity":"low","severityValue":25,"timestamp":1786140420000,"latitude":42.35,"longitude":-91.48}] |
Safety Information
If a tornado warning is issued: go to a basement or an interior room on the lowest floor, away from windows. A vehicle and a mobile home are not shelter. Cover your head and neck. Wait for the official all-clear before going outside, and watch for downed power lines and gas leaks afterwards.
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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