IEM Daily Bulletin for Nov 22 2025
daryl herzmann
Iowa Environmental Mesonet Daily Bulletin for 22 November 2025
News
No news is good newsIEM Code Pushes <repo,branch> on Github
| Timestamp | Repository | Message | Link |
|---|---|---|---|
| Nov 21 11:34 AM | iem,main | ⬆️ Update ruff | Link |
| Nov 21 11:52 AM | iem,main | 🚧 Iterate on viewer | Link |
| Nov 21 12:07 PM | iem,main | 🎨 Prevent an undef | Link |
| Nov 21 12:13 PM | iem,main | 💚 Address deepsource concern | Link |
| Nov 21 12:26 PM | iemvtec,main | ⬆️ Update things | Link |
Daily Feature
Regional Temp and Precip (RTP) Reports
Date: 21 Nov 05:30 AM
Votes: Good: 8
Bad: 0 Abstain: 2
The National Weather Service has a long history of producing useful and simple "plain text" products summarizing weather and climate information. One of these products is known as the Regional Temperature and Precipitation (RTP) Report. The RTP provides daily summary reports of high/low temperature, precipitation, snowfall and snow depth observations from various networks including ASOS and COOP. While the RTP can be easily read by humans, it also uses SHEF encoding that can be processed by computer software. For various reasons including workload, software changes, SHEF encoding being ancient/horrid and the year being 2025 not 1985, the NWS has announced full termination of this product generation. So since the IEM already processes most of the data from the NWS that went into the RTP and sadly is well versed in SHEF encoding, a simple generation "autoplot tool" has been added to create the RTP on demand for folks that may still wish to use such a product. There are some notes on the page on how you can automate the download of the generated product as well.
The featured media can be generated on-demand here
.NWS Watch/Warning Summary for 12 AM 21 Nov 2025 - 12 AM 22 Nov 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 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Flash Flood | 6 | 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: 2 Verified: 0 [0.0%] Polygon Size Versus County Size [5.2%] Average Perimeter Ratio [10.1%] Percentage of Warned Area Verified (15km) [0.0%] Average Storm Based Warning Size [374 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]