IEM Daily Bulletin for Jan 21 2026
daryl herzmann
Iowa Environmental Mesonet Daily Bulletin for 21 January 2026
News
No news is good newsIEM Code Pushes <repo,branch> on Github
| Timestamp | Repository | Message | Link |
|---|---|---|---|
| Jan 20 8:01 AM | iem,main | 📝 Sundry updates per log review | Link |
| Jan 20 12:40 PM | iem,main | ✏️ Fix URL typo | Link |
| Jan 20 9:32 AM | iem-database,main | ⬆️ Update ruff | Link |
| Jan 20 9:33 AM | iem-database,main | 📝 Sundry code updates | Link |
Daily Feature
Column Calendar of Departures
Date: 20 Jan 05:30 AM
Votes: Good: 11
Bad: 0 Abstain: 0
On average, the middle of January is the coldest period of the year and the weather over the past few days has followed suit. The featured chart presents a column calendar of daily high temperature departures for Des Moines since 1 February 2025. Most of the past 30 days have been dominated by above average high temperatures, but this past weekend and at least the upcoming week will be below average. The chart nicely shows how the largest of high temperature departures are mostly confined to the coldest half of the year, where temperature variability is the largest. The warm season features warmer soil temperatures and higher humidity levels, which both help to modulate temperature fluctuations.
The featured media can be generated on-demand here
.NWS Watch/Warning Summary for 12 AM 20 Jan 2026 - 12 AM 21 Jan 2026 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 | 1 | 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.