Right now
The most recent data we hold from NOAA arrived 38 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
One other detection within 20 km in the last 24 hours, 22 km from here.
This alert expired on 5 July 2026 at 11:15 UTC. It is kept here as a record.
It is the 4th strongest of the 47 detections recorded within 20 km of this point since 11 March 2026. The last comparable one was on 4 July 2026. 5 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flood Watch issued July 4 at 10:11AM CDT until July 8 at 1:00AM CDT by NWS Des Moines IA
Urban PEI: 278,494 within a heuristic 50 km radius; not unique people.
Nearby, since 11 March 2026
- July 8, 2026 · score 43 · 0.0 km
- June 13, 2026 · score 43 · 19.7 km
- March 11, 2026 · score 49 · 22.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 43 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) | 43 / 100 |
| Legacy data-support index | 0.77/1 |
| Coordinates | 41.6975, -91.9118 |
| Nearest City | North Liberty (27 km) |
| Urban exposure index (PEI) | 278.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-08T00:00:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flood Watch_noaa_urn:oid:2.49.0.1.840.0.cbaf8c95967feb830e7a458824eeae68 |
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: 2026-07-08T00:00:00.000Z.
First archived: 2026-07-04T21:58:23.504Z. 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 | Flood Watch |
| Urgency | Future |
| Certainty | Possible |
| AreaDesc | Tama; Poweshiek; Muscatine; Louisa |
| Headline | Flood Watch issued July 4 at 10:11AM CDT until July 8 at 1:00AM CDT by NWS Des Moines IA |
| Expires | 2026-07-05T06:15:00-05:00 |
| SenderName | NWS Des Moines IA |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.cbaf8c95967feb830e7a458824eeae68f6f16e43.001.1","noaa_urn:oid:2.49.0.1.840.0.df5565bc7cd8c21a508e45aff0f01802a32292ac.001.1"] |
Safety Information
During flooding: never walk, swim, or drive through floodwaters. Six inches of moving water can knock you down, and one foot of water can sweep away a vehicle. Move to higher ground if waters rise. After flooding, avoid contact with floodwater which may contain sewage, chemicals, or debris. Follow local emergency service guidance.
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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