IEM Daily Bulletin for Aug 6 2026
daryl herzmann
Iowa Environmental Mesonet Daily Bulletin for 06 August 2026
News
No news is good newsIEM Code Pushes <repo,branch> on Github
| Timestamp | Repository | Message | Link |
|---|---|---|---|
| Aug 5 9:15 AM | iem-web-services,main | 🎨 Cleanup dev script | Link |
| Aug 5 9:15 AM | iem-web-services,main | ✨ Allow sday/eday to drydown service, remove CFS | Link |
| Aug 5 9:16 AM | iem-web-services,main | ⬆️ Update ruff precommit | Link |
| Aug 5 9:19 AM | iem-web-services,main | 💚 Address codereview | Link |
| Aug 5 3:44 PM | iem-web-services,main | 🎨 Cleanup __doc__ usage | Link |
| Aug 5 3:50 PM | iem-web-services,main | 💚 Address codereview | Link |
Daily Feature
There Will Come Soft Rains
Date: 05 Aug 05:30 AM
Votes: Good: 16
Bad: 0 Abstain: 0
In the category of life imitating art, yesterday (4 August 2026) was the future date referenced in the 1950 short story "There Will Come Soft Rains" written by Ray Bradbury. While some Iowans did experience something more than soft rains, a majority of the state received something much softer. The featured chart presents one minute interval data from the ISU Soil Moisture station just west of Ames. The bottom panel shows the one minute interval rainfall totals. The station utilizes a classic tipping bucket to report rainfall in 0.01 inch increments (one tip of the automated mechanism). So the minute totals are not a true minute accumulation as the time to generate one tip can take more than one minute. The label above the plot provides the maximum rainfall accumulations over various intervals of time. Those maximum values are not excessive at all and likely quality as a "soft rain" for most folks!
The featured media can be generated on-demand here
.NWS Watch/Warning Summary for 12 AM 5 Aug 2026 - 12 AM 6 Aug 2026 CDT
| Summary | By WFO | Watches | ||||||
|---|---|---|---|---|---|---|---|---|
| Type | US | IA | ARX | DVN | DMX | OAX | FSD | US |
| Tornado | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Svr Tstorm | 75 | 11 | 0 | 0 | 4 | 5 | 0 | 0 |
| Flash Flood | 44 | 2 | 0 | 0 | 1 | 1 | 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: 73 Verified: 21 [28.8%] Polygon Size Versus County Size [7.1%] Average Perimeter Ratio [20.2%] Percentage of Warned Area Verified (15km) [17.6%] Average Storm Based Warning Size [950 sq km] Probability of Detection(higher is better) [0.87] False Alarm Ratio (lower is better) [0.71] Critical Success Index (higher is better) [0.28]
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): 2,370
- Mastodon / Fediverse: 13
- Slack: 1,473
- Twitter/X: 9,664
- HTTP Webhooks: 175
- Weather.IM Jabber Chatrooms: 12,225