IEM Daily Bulletin for Aug 27 2025
daryl herzmann
Iowa Environmental Mesonet Daily Bulletin for 27 August 2025
News
No news is good newsIEM Code Pushes <repo,branch> on Github
| Timestamp | Repository | Message | Link |
|---|---|---|---|
| Aug 26 8:16 AM | iem,main | 🐛 Fix datetime sorting | Link |
| Aug 26 10:14 AM | iem,main | 🐛 Fix dbjoin per #1359 | Link |
| Aug 26 10:23 AM | iem,main | ✨ Add winter headline accumulation option https://mesonet.agron.iastate.edu/plotting/auto/?q=44 |
Link |
| Aug 26 11:14 AM | iem,main | 🔥 Complete removal of Font Awesome | Link |
| Aug 26 2:18 PM | iem,main | ✨ Add geotiff export for RTMA summary autoplot https://mesonet.agron.iastate.edu/plotting/auto/?q=241 |
Link |
| Aug 26 9:32 PM | iem,main | ✏️ Fix frustrating typos | Link |
| Aug 26 3:01 PM | iemone,main | 📝 Continued RWIS Obs polishing | Link |
| Aug 26 8:04 AM | iemvtec,main | ➕ Specify openlayers as latest | Link |
| Aug 26 8:05 AM | iemvtec,main | 🐛 Fix LSR Text link in popup | Link |
| Aug 26 4:06 PM | iem-database,main | 🎨 Add current table trigger for RELH | Link |
Daily Feature
70+ Degree Days
Date: 26 Aug 05:30 AM
Votes: Good: 8
Bad: 1 Abstain: 0
The amazing late summer weather continued on Monday with another day with high temperatures in the lower 70s for most of the state. This wonderful weather came just in time for the start of school season and to help those schools with marginal air conditioning capacities! The featured chart looks into the year to date accumulated number of days with a high temperature of at least 70°F for Ames. Each year's accumulation is plotted as a tan line with a simple average show with the black line. The full year maximum and minimum values are highlighted as well. Last year's total of 175 days is shown as the most on record and with this year's accumulation running a few days ahead of last year's pace! The red line continued accumulation through the end of October certainly shows how 2024 passed so many previous years.
The featured media can be generated on-demand here
.NWS Watch/Warning Summary for 12 AM 26 Aug 2025 - 12 AM 27 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 | 30 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Flash Flood | 48 | 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: 30 Verified: 0 [0.0%] Polygon Size Versus County Size [2.3%] Average Perimeter Ratio [2.9%] Percentage of Warned Area Verified (15km) [0.0%] Average Storm Based Warning Size [603 sq km] Probability of Detection(higher is better) [0.00] False Alarm Ratio (lower is better) [1.00] Critical Success Index (higher is better) [0.00]