IEM Daily Bulletin for Oct 15 2025
daryl herzmann
Iowa Environmental Mesonet Daily Bulletin for 15 October 2025
News
No news is good newsIEM Code Pushes <repo,branch> on Github
| Timestamp | Repository | Message | Link |
|---|---|---|---|
| Oct 14 10:07 AM | iem,main | 🚀 Bundle mitoteam/jpgraph 10.5.1 | Link |
| Oct 14 11:28 AM | iem,main | ⬆️ Update ruff | Link |
| Oct 14 11:44 AM | iem,main | ✨ Plot ncei71-00 climatology, if it exists within IEM https://mesonet.agron.iastate.edu/plotting/auto/?q=55 |
Link |
| Oct 14 12:20 PM | iem,main | 📝 Adjust usage | Link |
| Oct 14 3:29 PM | iemlsr,main | 🐛 Correct icon location to LSR point fixes #79 |
Link |
| Oct 14 4:20 PM | iemlsr,main | 📝 Update lock | Link |
Daily Feature
Awaiting First Freeze
Date: 14 Oct 05:30 AM
Votes: Good: 16
Bad: 0 Abstain: 0
For a decent portion of the state, the chilliest temperatures this fall season happened over a month ago back around the 7th of September! Practically the entire state has yet to see a sub freezing temperature this fall. The featured map presents a smoothed analysis of mostly NWS COOP reporting stations for the minimum temperature since the first of September. A couple of 31°F temperatures are shown, but the vast majority of stations have reported values safely above freezing. The near term forecast has not much in the way of chilly weather, so the wait for the first freeze will continue.
The featured media can be generated on-demand here
.NWS Watch/Warning Summary for 12 AM 14 Oct 2025 - 12 AM 15 Oct 2025 CDT
| Summary | By WFO | Watches | ||||||
|---|---|---|---|---|---|---|---|---|
| Type | US | IA | ARX | DVN | DMX | OAX | FSD | US |
| Tornado | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Svr Tstorm | 9 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| Flash Flood | 6 | 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: 11 Verified: 3 [27.3%] Polygon Size Versus County Size [7.2%] Average Perimeter Ratio [1.7%] Percentage of Warned Area Verified (15km) [21.1%] Average Storm Based Warning Size [907 sq km] Probability of Detection(higher is better) [0.25] False Alarm Ratio (lower is better) [0.73] Critical Success Index (higher is better) [0.15]