IEM Daily Bulletin for Mar 4 2026
daryl herzmann
Iowa Environmental Mesonet Daily Bulletin for 04 March 2026
News
No news is good newsIEM Code Pushes <repo,branch> on Github
| Timestamp | Repository | Message | Link |
|---|---|---|---|
| Mar 3 11:10 AM | iem,main | 🎨 Cleanup apache vhost config | Link |
| Mar 3 11:31 AM | iem,main | 📝 Sundry updates per log review | Link |
| Mar 3 11:58 AM | iem,main | 💚 Adjust test per updated reality | Link |
| Mar 3 9:55 AM | pyiem,main | ⬆️ Update ruff | Link |
| Mar 3 9:56 AM | pyiem,main | ➕ Add pyproject-fmt to precommit | Link |
| Mar 3 9:57 AM | pyiem,main | 🚚 Move setup.cfg content | Link |
| Mar 3 1:49 PM | pyiem,main | 📝 Add real SPC CIG1 test | Link |
Daily Feature
Western US Winter Warmth
Date: 03 Mar 05:30 AM
Votes: Good: 12
Bad: 0 Abstain: 0
A few weeks ago, a similar map was featured showing how warm mid December through the first week of January had been for much of the contiguous US. So with the meteorological winter months of December through February now complete, today's featured map looks into how warm this winter season was. The map plots average temperature ranks since 1893 with a value of one representing the warmest over that period. There are plenty of ones to be seen over the western half of the US. Iowa is somewhat stuck in the middle, but values shown are above average.
The featured media can be generated on-demand here
.NWS Watch/Warning Summary for 12 AM 3 Mar 2026 - 12 AM 4 Mar 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 | 10 | 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: 10 Verified: 2 [20.0%] Polygon Size Versus County Size [18.0%] Average Perimeter Ratio [21.1%] Percentage of Warned Area Verified (15km) [8.2%] Average Storm Based Warning Size [729 sq km] Probability of Detection(higher is better) [1.00] False Alarm Ratio (lower is better) [0.80] Critical Success Index (higher is better) [0.20]
IEMBot Social Media Posts
IEMBot can be configured to post messages to a number of social media services. More details: IEMBot Homepage.
Posts yesterday per supported service:
- ATMosphere (bluesky only attm): 1,386
- Mastodon / Fediverse: 12
- Slack: 587
- Twitter/X: 9,321
- HTTP Webhooks: 6
- Weather.IM Jabber Chatrooms: 9,577