Right now
The most recent data we hold from NOAA arrived 19 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, 18 km from here.
This alert expired on 4 July 2026 at 22:30 UTC. It is kept here as a record.
It is the 10th strongest of the 97 detections recorded within 20 km of this point since 11 March 2026. The last comparable one was on 6 July 2026. 14 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flood Watch issued July 3 at 9:28PM CDT until July 7 at 7:00PM CDT by NWS Des Moines IA
Urban PEI: 278,494 within a heuristic 50 km radius; not unique people.
Nearby, since 11 March 2026
- June 11, 2026 · score 67 · 2.1 km
- June 18, 2026 · score 37 · 3.9 km
- September 9, 2026 · score 37 · 10.2 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 | 0.80/1 |
| Coordinates | 41.7653, -91.6524 |
| Nearest City | North Liberty (5 km) |
| Urban exposure index (PEI) | 278.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-07T06:00:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flood Watch_noaa_urn:oid:2.49.0.1.840.0.e33ea6f1eecbfc11d4fd5dc76ac0d641 |
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: 2026-07-07T06:00:00.000Z.
First archived: 2026-07-04T11:46:20.071Z. 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; Benton; Iowa and 1 more areas |
| Headline | Flood Watch issued July 3 at 9:28PM CDT until July 7 at 7:00PM CDT by NWS Des Moines IA |
| Expires | 2026-07-04T17:30:00-05:00 |
| SenderName | NWS Des Moines IA |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.e33ea6f1eecbfc11d4fd5dc76ac0d6410bf0bb8c.003.1","noaa_urn:oid:2.49.0.1.840.0.9eba598cf7193ec07677488d87cb04755613ec33.004.1","noaa_urn:oid:2.49.0.1.840.0.9eba598cf7193ec07677488d87cb04755613ec33.003.1","noaa_urn:oid:2.49.0.1.840.0.042b7755e5d997bb3d2b579d8618d04a7697f642.002.1"] |
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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