IEM Daily Bulletin for Aug 15 2025
daryl herzmann
Iowa Environmental Mesonet Daily Bulletin for 15 August 2025
News
No news is good newsIEM Code Pushes <repo,branch> on Github
| Timestamp | Repository | Message | Link |
|---|---|---|---|
| Aug 14 9:07 AM | iem,main | ✨ Add filter by state option to IBW Tags Listing https://mesonet.agron.iastate.edu/nws/list_tags.php |
Link |
| Aug 14 10:50 AM | iem,main | 🐛 Address counting logic issue | Link |
| Aug 14 2:58 PM | iem,main | 📝 Sundry updates per review | Link |
| Aug 15 5:46 AM | iem,main | 📝 Sundry updates per review | Link |
| Aug 14 1:13 PM | iem-web-services,main | ⚡️ Remove source from database query | Link |
| Aug 14 1:25 PM | iem-web-services,main | 💚 Update codecov config | Link |
Daily Feature
Backing Off Humidity
Date: 14 Aug 05:30 AM
Votes: Good: 5
Bad: 0 Abstain: 0
Humidity levels have felt a bit nicer to start off this week as the very muggy conditions last week have backed off some. The featured chart presents IEM computed daily max and min dew point temperatures along with a crude and smoothed period of record climatology for Estherville (NW Iowa). The climatology doesn't show much for a downward trend as the month of August progresses as more fall like weather (read lower dew points) typically waits till the second week of September or so to start showing up. A couple of days last week are shown having low dew point values near an average high value. Unfortunately, heat and humidity are building back into the state with a hot and muggy weekend forecast with air temperatures into the 90s and dew points in the upper 70s.
The featured media can be generated on-demand here
.NWS Watch/Warning Summary for 12 AM 14 Aug 2025 - 12 AM 15 Aug 2025 CDT
| Summary | By WFO | Watches | ||||||
|---|---|---|---|---|---|---|---|---|
| Type | US | IA | ARX | DVN | DMX | OAX | FSD | US |
| Tornado | 4 | 0 | 0 | 0 | 0 | 0 | 2 | 0 |
| Svr Tstorm | 50 | 0 | 0 | 0 | 0 | 1 | 2 | 0 |
| Flash Flood | 13 | 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: 49 Verified: 13 [26.5%] Polygon Size Versus County Size [20.4%] Average Perimeter Ratio [19.3%] Percentage of Warned Area Verified (15km) [8.6%] Average Storm Based Warning Size [1760 sq km] Probability of Detection(higher is better) [0.53] False Alarm Ratio (lower is better) [0.73] Critical Success Index (higher is better) [0.21]