IEM Daily Bulletin for Dec 12 2025
daryl herzmann
Iowa Environmental Mesonet Daily Bulletin for 12 December 2025
News
No news is good newsIEM Code Pushes <repo,branch> on Github
| Timestamp | Repository | Message | Link |
|---|---|---|---|
| Dec 11 8:13 AM | iem,main | 📝 Sundry updates per log review | Link |
| Dec 11 8:49 AM | iem,main | 🐛 Correct more IEMRE domain strings | Link |
| Dec 11 9:50 AM | iem,main | ⚡️ Increase load thresholds | Link |
| Dec 11 9:53 PM | iem,main | ✨ Add wetbulb temp plot https://mesonet.agron.iastate.edu/current/index.phtml/air_temperature/2m_wetbulb_temperature |
Link |
Daily Feature
'25-'26 Winter Storm #5
Date: 11 Dec 08:13 AM
Votes: Good: 8
Bad: 1 Abstain: 0
While not for a snow producing winter storm, the extreme corner of northeastern Iowa was clipped with three to four inches of snowfall on Tuesday night into Wednesday, so meeting the arbitrary two inch threshold for IEM map generation and winter storm accounting! Iowa was rather fortunate for this event as the blowing snow threat did not materialize after significant melting occurred with the above freezing dew points on Tuesday and coincident strong winds. Our next round of snow is here already this Thursday with a few inches of snowfall expected over a stripe from the NW to SE corner of Iowa.
NWS Watch/Warning Summary for 12 AM 11 Dec 2025 - 12 AM 12 Dec 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.