IEM Daily Bulletin for Jul 8 2026
daryl herzmann
Iowa Environmental Mesonet Daily Bulletin for 08 July 2026
News
No news is good newsIEM Code Pushes <repo,branch> on Github
| Timestamp | Repository | Message | Link |
|---|---|---|---|
| Jul 7 8:12 AM | iem,main | 🎨 Cleanup bashisms with monthly archive script | Link |
| Jul 7 8:20 AM | iem,main | 💚 Address codereview | Link |
| Jul 7 8:51 AM | iem,main | ♻️ Refactor prodDefinitions usage | Link |
| Jul 7 1:59 PM | iem,main | 🐛 Restrict LSR infographic to 2004+ | Link |
| Jul 7 2:10 PM | iem,main | 🐛 Allow CLIMATE sites to use data calendar | Link |
Daily Feature
Top Two Day Rainfall
Date: 07 Jul 05:30 AM
Votes: Good: 10
Bad: 1 Abstain: 2
For the Ames NWS COOP site at the ISU Ag Farm southwest of town, the two day precipitation total from the deluge last week came in third largest on record for the site. The site reported a 24 hour total of 2.17" for the afternoon report on Friday and then 4.20" on Saturday. The heavy rainfall events took a break on Monday for Iowa with Tuesday expected to be mostly dry as well. Storms will return Wednesday and likely produce locally heavy rainfall totals again with ample moisture around and slow storm motions.
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.NWS Watch/Warning Summary for 12 AM 7 Jul 2026 - 12 AM 8 Jul 2026 CDT
| Summary | By WFO | Watches | ||||||
|---|---|---|---|---|---|---|---|---|
| Type | US | IA | ARX | DVN | DMX | OAX | FSD | US |
| Tornado | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Svr Tstorm | 74 | 0 | 0 | 0 | 0 | 0 | 2 | 2 |
| Flash Flood | 28 | 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: 74 Verified: 38 [51.4%] Polygon Size Versus County Size [23.7%] Average Perimeter Ratio [20.1%] Percentage of Warned Area Verified (15km) [25.0%] Average Storm Based Warning Size [1456 sq km] Probability of Detection(higher is better) [0.65] False Alarm Ratio (lower is better) [0.49] Critical Success Index (higher is better) [0.40]
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