Right now
The most recent data we hold from NOAA arrived 15 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 6 August 2026 at 10:15 UTC. It is kept here as a record.
It is the 24th strongest of the 43 detections recorded within 20 km of this point since 24 April 2026. Another comparable one was recorded here earlier the same day. 5 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flood Watch issued August 5 at 9:02AM CDT by NWS Des Moines IA
Nearby, since 24 April 2026
- August 6, 2026 · score 22 · 0.0 km
- June 12, 2026 · score 22 · 0.0 km
- September 20, 2026 · score 28 · 17.1 km
How we know
27 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 16 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) | 16 / 100 |
| Legacy data-support index | 0.70/1 |
| Coordinates | 40.6840, -93.8660 |
| Nearest City | Indianola (79 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-08-05T14:02:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.c3a3ce516cf51c2acaa76673122c8f68001e69e7.001.1 |
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: 2026-08-05T14:02:00.000Z.
First archived: 2026-08-05T21:41:04.364Z. 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 | Decatur |
| Headline | Flood Watch issued August 5 at 9:02AM CDT by NWS Des Moines IA |
| Expires | 2026-08-06T05:15:00-05:00 |
| SenderName | NWS Des Moines IA |
| HasExactCoords | true |
| Iem TypeSummary | R |
| Iem Magnitude | 4.58 |
| Iem Unit | Inch |
| Iem City | 2 SW Creston |
| Iem County | Union |
| Iem State | IA |
| Iem Wfo | DMX |
| Iem Remark | CO-OP Observer station CRTI4 2 SW Creston. |
| MergedSources | [{"id":"iem_D_40.510_-93.260_1785930000000","source":"iem","severity":"low","severityValue":25,"timestamp":1785930000000,"latitude":40.51,"longitude":-93.26},{"id":"iem_R_41.040_-93.980_1785931200000","source":"iem","severity":"low","severityValue":25,"timestamp":1785931200000,"latitude":41.04,"longitude":-93.98},{"id":"iem_D_40.370_-93.100_1785931080000","source":"iem","severity":"low","severityValue":25,"timestamp":1785931080000,"latitude":40.37,"longitude":-93.1},{"id":"iem_R_40.620_-93.930_1785931200000","source":"iem","severity":"low","severityValue":25,"timestamp":1785931200000,"latitude":40.62,"longitude":-93.93},{"id":"iem_R_41.030_-93.780_1785934800000","source":"iem","severity":"low","severityValue":25,"timestamp":1785934800000,"latitude":41.03,"longitude":-93.78},{"id":"iem_D_40.580_-93.520_1785928800000","source":"iem","severity":"low","severityValue":25,"timestamp":1785928800000,"latitude":40.58,"longitude":-93.52},{"id":"iem_R_40.820_-93.960_1785931200000","source":"iem","severity":"low","severityValue":25,"timestamp":1785931200000,"latitude":40.82,"longitude":-93.96},{"id":"iem_G_40.860_-94.570_1785920880000","source":"iem","severity":"low","severityValue":25,"timestamp":1785920880000,"latitude":40.86,"longitude":-94.57},{"id":"iem_D_40.540_-93.390_1785929340000","source":"iem","severity":"low","severityValue":25,"timestamp":1785929340000,"latitude":40.54,"longitude":-93.39},{"id":"iem_R_40.680_-93.150_1785931200000","source":"iem","severity":"low","severityValue":25,"timestamp":1785931200000,"latitude":40.68,"longitude":-93.15},{"id":"iem_R_41.020_-93.750_1785931200000","source":"iem","severity":"low","severityValue":25,"timestamp":1785931200000,"latitude":41.02,"longitude":-93.75},{"id":"iem_R_41.050_-93.950_1785931200000","source":"iem","severity":"low","severityValue":25,"timestamp":1785931200000,"latitude":41.05,"longitude":-93.95},{"id":"iem_D_40.550_-93.470_1785928980000","source":"iem","severity":"low","severityValue":25,"timestamp":1785928980000,"latitude":40.55,"longitude":-93.47},{"id":"iem_D_40.550_-93.400_1785928860000","source":"iem","severity":"low","severityValue":25,"timestamp":1785928860000,"latitude":40.55,"longitude":-93.4},{"id":"iem_R_40.650_-93.270_1785938520000","source":"iem","severity":"low","severityValue":25,"timestamp":1785938520000,"latitude":40.65,"longitude":-93.27},{"id":"iem_R_40.720_-93.270_1785931200000","source":"iem","severity":"low","severityValue":25,"timestamp":1785931200000,"latitude":40.72,"longitude":-93.27},{"id":"iem_R_41.120_-94.000_1785931200000","source":"iem","severity":"low","severityValue":25,"timestamp":1785931200000,"latitude":41.12,"longitude":-94},{"id":"iem_R_41.020_-93.820_1785931200000","source":"iem","severity":"low","severityValue":25,"timestamp":1785931200000,"latitude":41.02,"longitude":-93.82},{"id":"iem_R_41.090_-94.520_1785931020000","source":"iem","severity":"low","severityValue":25,"timestamp":1785931020000,"latitude":41.09,"longitude":-94.52},{"id":"iem_R_40.900_-93.770_1785931200000","source":"iem","severity":"low","severityValue":25,"timestamp":1785931200000,"latitude":40.9,"longitude":-93.77},{"id":"iem_R_40.860_-93.500_1785939180000","source":"iem","severity":"low","severityValue":25,"timestamp":1785939180000,"latitude":40.86,"longitude":-93.5},{"id":"iem_D_40.480_-93.200_1785930540000","source":"iem","severity":"low","severityValue":25,"timestamp":1785930540000,"latitude":40.48,"longitude":-93.2},{"id":"iem_F_41.040_-93.980_1785937020000","source":"iem","severity":"low","severityValue":25,"timestamp":1785937020000,"latitude":41.04,"longitude":-93.98},{"id":"iem_D_40.540_-93.450_1785929100000","source":"iem","severity":"low","severityValue":25,"timestamp":1785929100000,"latitude":40.54,"longitude":-93.45},{"id":"iem_G_40.630_-93.900_1785926940000","source":"iem","severity":"low","severityValue":25,"timestamp":1785926940000,"latitude":40.63,"longitude":-93.9},{"id":"iem_R_41.040_-94.390_1785931200000","source":"iem","severity":"low","severityValue":25,"timestamp":1785931200000,"latitude":41.04,"longitude":-94.39}] |
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.
Want to know when something happens in this area?