This alert expired on 5 July 2026 at 15:45 UTC. It is kept here as a record.
It is the 7th strongest of the 102 detections recorded within 20 km of this point since 11 March 2026. The last comparable one was on 4 July 2026. 9 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flood Warning issued July 4 at 4:57PM CDT until July 5 at 10:36AM CDT by NWS Des Moines IA
An estimated 278,494 people live within 50 km of this point.
Nearby, since 11 March 2026
- July 31, 2026 · score 67 · 7.9 km
- August 1, 2026 · score 67 · 8.8 km
- July 5, 2026 · score 43 · 8.9 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, at 77 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 43 / 100 |
| Our confidence | 77% |
| Coordinates | 41.8888, -91.4687 |
| Nearest City | North Liberty (19 km) |
| Population Exposed | 278.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-05T21:00:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flood Warning_noaa_urn:oid:2.49.0.1.840.0.37c69c411cf1598cdddeb5f4ed241eb7 |
Score Breakdown
Technical Details
| Event | Flood Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Polk, IA; Story, IA; Jasper, IA; Marion, IA; Polk, IA; Polk, IA and 14 more areas |
| Headline | Flood Warning issued July 4 at 4:57PM CDT until July 5 at 10:36AM CDT by NWS Des Moines IA |
| Expires | 2026-07-05T10:45:00-05:00 |
| SenderName | NWS Des Moines IA |
| HasExactCoords | true |
| MergedCount | 19 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.37c69c411cf1598cdddeb5f4ed241eb77f6b7219.003.1","noaa_urn:oid:2.49.0.1.840.0.37c69c411cf1598cdddeb5f4ed241eb77f6b7219.002.1","noaa_urn:oid:2.49.0.1.840.0.37c69c411cf1598cdddeb5f4ed241eb77f6b7219.004.1","noaa_urn:oid:2.49.0.1.840.0.bff8a8c261cb4df709f2adb9142d2f66ac73f1fe.001.1","noaa_urn:oid:2.49.0.1.840.0.bff8a8c261cb4df709f2adb9142d2f66ac73f1fe.002.1","noaa_urn:oid:2.49.0.1.840.0.76490a7f39086ef707a9865ea084b615561a16eb.003.1","noaa_urn:oid:2.49.0.1.840.0.76490a7f39086ef707a9865ea084b615561a16eb.005.1","noaa_urn:oid:2.49.0.1.840.0.76490a7f39086ef707a9865ea084b615561a16eb.001.1","noaa_urn:oid:2.49.0.1.840.0.76490a7f39086ef707a9865ea084b615561a16eb.002.1","noaa_urn:oid:2.49.0.1.840.0.76490a7f39086ef707a9865ea084b615561a16eb.004.1","noaa_urn:oid:2.49.0.1.840.0.0682b85f8d84dc1221053a757f98dadc15d85d56.001.1","noaa_urn:oid:2.49.0.1.840.0.7d4b0f1efcbc2cf6ac1647af56e2227815e7fc24.004.1","noaa_urn:oid:2.49.0.1.840.0.7d4b0f1efcbc2cf6ac1647af56e2227815e7fc24.003.1","noaa_urn:oid:2.49.0.1.840.0.634330af2e122322d42361ee773547f5e671b536.002.1","noaa_urn:oid:2.49.0.1.840.0.634330af2e122322d42361ee773547f5e671b536.001.1","noaa_urn:oid:2.49.0.1.840.0.348d99f348a0ced8103c1b12442d25afe1325d0c.001.1","noaa_urn:oid:2.49.0.1.840.0.5bb57c45407f56be744800477b933a13cfc54d87.001.1","noaa_urn:oid:2.49.0.1.840.0.5bb57c45407f56be744800477b933a13cfc54d87.002.1","noaa_urn:oid:2.49.0.1.840.0.5bb57c45407f56be744800477b933a13cfc54d87.003.1"] |
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 10 February 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.
Calamity.live data shows a weather event with CalamityScore 43/100, near North Liberty (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.