IEM Daily Bulletin for Aug 7 2025
daryl herzmann
Iowa Environmental Mesonet Daily Bulletin for 07 August 2025
News
No news is good newsIEM Code Pushes <repo,branch> on Github
| Timestamp | Repository | Message | Link |
|---|---|---|---|
| Aug 6 8:02 AM | iem,main | 📝 Sundry updates per review | Link |
| Aug 6 8:05 AM | iem,main | ✨ Add 18 UTC raob ingest | Link |
| Aug 6 7:54 PM | iem,main | 🎨 Improve NASA POWER ingest | Link |
| Aug 6 8:00 PM | iem,main | 📝 Autoplot tweaks | Link |
| Aug 6 8:02 PM | iem,main | 💚 Address deepsource concern | Link |
Daily Feature
Waterloo Warmer than Des Moines
Date: 06 Aug 05:30 AM
Votes: Good: 8
Bad: 1 Abstain: 0
While only by one degree (83° vs 82°), the Waterloo airport reported a warmer high temperature than Des Moines on Tuesday. The frequency of this happening is the subject of today's daily feature. The chart presents the daily frequency of the Waterloo high temperature being at least one degree warmer than Des Moines. A rather clean annual signal is shown with the highest frequencies happening during the late spring/early summer and the lowest frequencies during winter. The winter difference likely has to do with larger snow cover frequencies for Waterloo vs Des Moines. The peak in May likely has to do with local land use and soil differences, which leads to more efficient heating rates at Waterloo. The values though are practically all below 50% and the overall average is near 25%, so this micro-climate difference isn't enough to make Waterloo a warmer climate than Des Moines.
The featured media can be generated on-demand here
.NWS Watch/Warning Summary for 12 AM 6 Aug 2025 - 12 AM 7 Aug 2025 CDT
| Summary | By WFO | Watches | ||||||
|---|---|---|---|---|---|---|---|---|
| Type | US | IA | ARX | DVN | DMX | OAX | FSD | US |
| Tornado | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Svr Tstorm | 10 | 0 | 0 | 0 | 0 | 0 | 1 | 0 |
| Flash Flood | 18 | 0 | 0 | 1 | 0 | 0 | 1 | --- |
ARX = LaCrosse, WI DVN = Davenport, IA DMX = Des Moines, IA OAX = Omaha, NE FSD = Sioux Falls, SD
IEM Cow Report
SVR+TOR Warnings Issued: 10 Verified: 5 [50.0%] Polygon Size Versus County Size [12.2%] Average Perimeter Ratio [19.8%] Percentage of Warned Area Verified (15km) [31.9%] Average Storm Based Warning Size [830 sq km] Probability of Detection(higher is better) [0.38] False Alarm Ratio (lower is better) [0.50] Critical Success Index (higher is better) [0.27]