IEM Daily Bulletin for Jan 27 2026
daryl herzmann
Iowa Environmental Mesonet Daily Bulletin for 27 January 2026
News
No news is good newsIEM Code Pushes <repo,branch> on Github
| Timestamp | Repository | Message | Link |
|---|---|---|---|
| Jan 26 8:28 AM | iem,main | 🎨 Improve ICON download robustness, hopefully | Link |
| Jan 26 9:04 AM | iem,main | 🔥 Remove pandas no_silent_downcasting setting | Link |
| Jan 26 9:30 AM | iem,main | 📝 Sundry updates per log review | Link |
| Jan 26 10:03 AM | iem,main | ✨ Set station attribute HAS_PHOUR for #1489 | Link |
| Jan 26 10:04 AM | iem,main | ✨ Support station attribute filter on iemss | Link |
| Jan 26 11:05 AM | iem,main | ✨ Use access phour table for daily per #1489 | Link |
| Jan 26 11:54 AM | iem,main | 🐛 Permit and test for empty date string | Link |
| Jan 26 2:22 PM | iem,main | 🐛 Account for and test for NaNs in json response | Link |
| Jan 26 9:57 PM | iem,main | 🐛 Fix winter aggregate | Link |
| Jan 26 8:42 AM | pyiem,main | ⬆️ Update ruff | Link |
| Jan 26 8:45 AM | pyiem,main | 📝 Add StationAttributes.HAS_PHOUR | Link |
| Jan 26 11:39 AM | pyiem,main | 📝 Address pandas4 deprecation | Link |
| Jan 26 11:45 AM | pyiem,main | 🚀 Require python 3.11 | Link |
| Jan 26 10:22 AM | pywwa,main | ⬆️ Update ruff | Link |
| Jan 26 10:25 AM | pywwa,main | 📝 Add UZGL01 placeholder | Link |
Daily Feature
Winter Storm Warning Record
Date: 26 Jan 05:30 AM
Votes: Good: 15
Bad: 3 Abstain: 0
The IEM attempts to curate a high fidelity archive of National Weather Service Watch, Warnings, and Advisories. While the NWS has been issuing alerts for many decades, the modern era started toward the end of 2005 with the implementation of a more robust system called VTEC. The featured info-graphic is from one of the IEM bean-counting autoplots attempting to estimate the population under a given alert type along with the states and counties/forecast zones counts. The on-going major winter storm over the southern US and now into the northeastern US prompted the NWS to cover a considerable portion of the country under a Winter Storm Warning. The featured graphic is valid 6 AM on Sunday and indicates over 143 million folks under such an alert while covering 1,370 counties or forecast zones. The unofficial IEM database indicates that both values are record highs since at least late 2005. Unfortunately, a simple tool on this website does not yet exist to list these records explicitly, so a manual database query indicates that the next highest totals were significantly lower at just under 100 million people on 1 Feb 2011 and 998 counties/zones on 15 Feb 2021.
The featured media can be generated on-demand here
.NWS Watch/Warning Summary for 12 AM 26 Jan 2026 - 12 AM 27 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 | 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.