IEM Daily Bulletin for Dec 3 2025
daryl herzmann
Iowa Environmental Mesonet Daily Bulletin for 03 December 2025
News
No news is good newsIEM Code Pushes <repo,branch> on Github
| Timestamp | Repository | Message | Link |
|---|---|---|---|
| Dec 2 9:44 AM | iem,main | 📝 Sundry updates per log review | Link |
| Dec 2 10:58 AM | iem,main | 🔥 Drop underutilized commonregex dep | Link |
| Dec 2 12:14 PM | iem,main | ⚡️ CI: source inotify from conda-forge | Link |
| Dec 2 9:58 PM | iem,main | ✨ Add snowfall total option to top 10 https://mesonet.agron.iastate.edu/plotting/auto/?q=132 |
Link |
Daily Feature
'25-'26 Winter Storm #3
Date: 02 Dec 08:13 AM
Votes: Good: 11
Bad: 0 Abstain: 0
Full-blown winter appears here to stay with another round of snow impacting Iowa on Monday into Tuesday. Totals from this event were much lighter with just an inch or two most commonly reported over southern and southeastern Iowa. As a reminder, the IEM generates these maps for snowfall events that have at least an arbitrarily chosen two inch or greater report and/or significant travel impacts. You can find previous event maps for this year and previous years by following the "winter2526" tag associated with this feature message. The next snowfall event arrives this evening, but totals are again expected to be on the light. A bit of quieter weather arrives for the remainder of the week.
NWS Watch/Warning Summary for 12 AM 2 Dec 2025 - 12 AM 3 Dec 2025 CST
| Summary | By WFO | Watches | ||||||
|---|---|---|---|---|---|---|---|---|
| Type | US | IA | ARX | DVN | DMX | OAX | FSD | US |
| Tornado | 1 | 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
SVR+TOR Warnings Issued: 1 Verified: 0 [0.0%] Polygon Size Versus County Size [45.8%] Average Perimeter Ratio [0.0%] Percentage of Warned Area Verified (15km) [0.0%] Average Storm Based Warning Size [678 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]