IEM Daily Bulletin for Jun 19 2025
daryl herzmann
Iowa Environmental Mesonet Daily Bulletin for 19 June 2025
News
No news is good newsIEM Code Pushes <repo,branch> on Github
| Timestamp | Repository | Message | Link |
|---|---|---|---|
| Jun 18 1:07 PM | iem,main | 📝 Add some sundry polish to various apps | Link |
| Jun 18 10:42 AM | iemvtec,main | ✅ Increase test coverage | Link |
| Jun 18 11:39 AM | iemvtec,main | 🐛 Address LSR popup problems | Link |
| Jun 18 11:48 AM | iemvtec,main | 🐛 Address LSR timestamp in popup | Link |
| Jun 18 11:52 AM | iemvtec,main | 🔥 Remove console.log usage | Link |
| Jun 18 1:42 PM | iemvtec,main | 🐛 Fix and improve LSR cross links | Link |
| Jun 18 2:05 PM | iemvtec,main | 💚 Address test failure | Link |
Daily Feature
Half Inch Coverage
Date: 18 Jun 05:30 AM
Votes: Good: 10
Bad: 0 Abstain: 0
Showers and thunderstorms continue to frequent the state thanks to staled out / meandering surface frontal boundaries and small upper troposphere disturbances providing a bit of needed help to fire storms with afternoon heating. The featured chart presents an IEM estimate based on NOAA estimates of the spatial percentage of Iowa receiving at least 0.5 inches of precipitation each day this year. The most recent June rainfall events have been much more isolated than previous events associated with larger scale and more strongly forced storm systems. We will have another such day on Wednesday before a break in precipitation arrives along with very hot temperatures.
The featured media can be generated on-demand here
.NWS Watch/Warning Summary for 12 AM 18 Jun 2025 - 12 AM 19 Jun 2025 CDT
| Summary | By WFO | Watches | ||||||
|---|---|---|---|---|---|---|---|---|
| Type | US | IA | ARX | DVN | DMX | OAX | FSD | US |
| Tornado | 42 | 0 | 0 | 0 | 0 | 0 | 0 | 3 |
| Svr Tstorm | 245 | 0 | 0 | 0 | 0 | 0 | 0 | 6 |
| Flash Flood | 33 | 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: 283 Verified: 152 [53.7%] Polygon Size Versus County Size [36.8%] Average Perimeter Ratio [36.8%] Percentage of Warned Area Verified (15km) [29.6%] Average Storm Based Warning Size [1919 sq km] Probability of Detection(higher is better) [0.86] False Alarm Ratio (lower is better) [0.46] Critical Success Index (higher is better) [0.49]