IEM Daily Bulletin for Aug 30 2025
daryl herzmann
Iowa Environmental Mesonet Daily Bulletin for 30 August 2025
News
No news is good newsIEM Code Pushes <repo,branch> on Github
| Timestamp | Repository | Message | Link |
|---|---|---|---|
| Aug 30 6:50 AM | iem,main | 🎨 Prevent low > high in climodat | Link |
| Aug 29 12:41 PM | iemlsr,main | 🎨 Add state STS/ETS helper | Link |
Daily Feature
August Temperatures
Date: 29 Aug 05:30 AM
Votes: Good: 6
Bad: 0 Abstain: 0
The featured chart presents a histogram of daily high vs low temperatures for Ames during August. The observations for 2025 are shown by the red dots. This August has seen temperatures over much of the historical range of what is possible for this time of year. The right two panels present some statistical measures of the daily range of temperature between the high and low. Overall, the most common temperature combination is around 86 for a high and 64 for a low. We will be cooler than those values to close out the month as the pleasant late summer weather continues!
The featured media can be generated on-demand here
.NWS Watch/Warning Summary for 12 AM 29 Aug 2025 - 12 AM 30 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 | 68 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| Flash Flood | 28 | 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: 67 Verified: 15 [22.4%] Polygon Size Versus County Size [10.0%] Average Perimeter Ratio [14.9%] Percentage of Warned Area Verified (15km) [11.0%] Average Storm Based Warning Size [982 sq km] Probability of Detection(higher is better) [0.57] False Alarm Ratio (lower is better) [0.78] Critical Success Index (higher is better) [0.19]