IEM Daily Bulletin for Nov 12 2025
daryl herzmann
Iowa Environmental Mesonet Daily Bulletin for 12 November 2025
News
No news is good newsIEM Code Pushes <repo,branch> on Github
| Timestamp | Repository | Message | Link |
|---|---|---|---|
| Nov 11 11:33 AM | iem,main | 🎨 Address lint | Link |
| Nov 11 3:03 PM | iem,main | ✨ Add archive browser of CoD Satellite Imagery A first pass at a simple browser of College of DuPage satellite imagery archived by MTArchive. The backend archive is not ready yet for full usage! The hope is to be ready by the first of the year. https://mesonet.agron.iastate.edu/archive/codsat/ |
Link |
| Nov 11 8:27 AM | iem-database,main | ⬆️ Update ruff | Link |
| Nov 11 8:36 AM | iem-database,main | ✅ Add some sustainablecorn test data | Link |
Daily Feature
After first sub 21°F
Date: 11 Nov 05:30 AM
Votes: Good: 7
Bad: 2 Abstain: 0
The chilly and even cold weather from this past weekend continued into Monday with high temperatures mostly in the 30s for Iowa. For the Ames Airport, the coldest low of the season of 20°F was observed Monday morning. The featured chart looks into daily high temperatures during the fall season after the first sub 21°F was established for each year on record for Ames. The top panel displays the maximum high temperature, the middle panel plots that maximum high temperature vs the date of first sub 21°F low temperature. The bottom panel plots the number of days with a high temperature of at least 60°F. The middle panel clearly shows that the max temperature after the first sub 21°F is clearly a function of the time of year that first low occurred. Rewording, an early-in-the-season cold temperature will likely still have quite a warm temperature to follow as climatology is very much in the favor of that happening. Our actual forecast has a return of mild weather later in the week and a run at daily high temperatures approaching 70°F!
The featured media can be generated on-demand here
.NWS Watch/Warning Summary for 12 AM 11 Nov 2025 - 12 AM 12 Nov 2025 CST
| Summary | By WFO | Watches | ||||||
|---|---|---|---|---|---|---|---|---|
| Type | US | IA | ARX | DVN | DMX | OAX | FSD | US |
| Tornado | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Svr Tstorm | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Flash Flood | 0 | 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
No SVR+TOR Warnings Issued.