IEM Daily Bulletin for Aug 29 2025
daryl herzmann
Iowa Environmental Mesonet Daily Bulletin for 29 August 2025
News
No news is good newsIEM Code Pushes <repo,branch> on Github
| Timestamp | Repository | Message | Link |
|---|---|---|---|
| Aug 28 9:01 AM | iem,main | 📝 Sundry updates per review | Link |
| Aug 28 10:18 AM | iem,main | 💚 Improve coverage | Link |
| Aug 28 10:34 AM | iem,main | 💚 Address test URL change per NoDataFound change | Link |
| Aug 28 9:26 AM | pyiem,main | 🎨 Change NoDataFound in iemapp to HTTP status 422 | Link |
Daily Feature
2025 Corn Denting Progress
Date: 28 Aug 05:30 AM
Votes: Good: 8
Bad: 0 Abstain: 1
The corn crop for Iowa and for the vast majority of the US Corn Belt continues to be in great shape. The most recent USDA NASS weekly crop progress report released on Monday estimated 45% of the state's corn crop in "denting" stage. The featured chart presents a look at the yearly corn in denting stage estimates for Iowa with the white "X" denoting the location of the 45% value each year. The right hand panel plots these yearly dates and fits a simple trend line to the data. The trend is not very strong as there is plenty of scatter with the data, but this year's value is a couple of days ahead of a long term average. Corn reaching denting stage still has a number of weeks to go before being ready for harvest.
The featured media can be generated on-demand here
.NWS Watch/Warning Summary for 12 AM 28 Aug 2025 - 12 AM 29 Aug 2025 CDT
| Summary | By WFO | Watches | ||||||
|---|---|---|---|---|---|---|---|---|
| Type | US | IA | ARX | DVN | DMX | OAX | FSD | US |
| Tornado | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Svr Tstorm | 23 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Flash Flood | 15 | 0 | 0 | 0 | 0 | 0 | 0 | --- |
ARX = LaCrosse, WI DVN = Davenport, IA DMX = Des Moines, IA OAX = Omaha, NE FSD = Sioux Falls, SD
IEM Cow Report
SVR+TOR Warnings Issued: 26 Verified: 7 [26.9%] Polygon Size Versus County Size [12.4%] Average Perimeter Ratio [14.9%] Percentage of Warned Area Verified (15km) [15.5%] Average Storm Based Warning Size [1083 sq km] Probability of Detection(higher is better) [0.92] False Alarm Ratio (lower is better) [0.73] Critical Success Index (higher is better) [0.26]