IEM Daily Bulletin for Jun 13 2025

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daryl herzmann

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Jun 13, 2025, 8:13:01 AM6/13/25
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Iowa Environmental Mesonet Daily Bulletin for 13 June 2025

News

No news is good news

IEM Code Pushes <repo,branch> on Github

Timestamp Repository Message Link
Jun 12 12:55 PM iem,main 🎨 Add distinct filter to listing Link
Jun 9 11:18 AM iem,main 🎨 Drop legacy IE shim Link
Jun 9 3:14 PM iem,main ✨ Migrate website to bootstrap 5
Generally attempts to replicate an ISU Theme, but not really. Likely
have lots of ugliness to clean up, but the foundation seems OK. Famous
last words.
Link
Jun 11 12:03 PM iem,main 💚 Address deepsource concern Link
Jun 12 10:09 AM iem,main 🚧 Additional bootstrap5 migrations Link
Jun 12 12:48 PM iem,main 🔥 Remove unused CSS Link
Jun 12 12:48 PM iem,main 🚧 Continued bootstrap5 iteration Link
Jun 12 10:55 PM iem,main 🚧 Update more things for bootstrap5 Link
Jun 12 10:56 PM iem,main 📝 Add iemvtec github app to dailyb email report Link
Jun 12 11:12 PM iem,main 🎨 Prepare for soon arriving iemvtec deployment Link
Jun 13 6:51 AM iem,main ✏️ Fix typo Link
Jun 12 2:26 PM pywwa,main 📝 Add CEW5 Link


Daily Feature

On-Time First 90
Date: 12 Jun 05:30 AM
Votes: Good: 14   Bad: 1 Abstain: 0

Wednesday was finally a day that felt like summer with high temperatures soaring into the 90s along with dew points into the 60s. For Des Moines, it was the first day this year with a high temperature of at least 90°F. The featured chart presents some statistics on this feat for Des Moines. The top panel compares the first date against the total number of such days for a given year. The bottom panel shows the cumulative distribution function. So 11 June is just a handful of days behind the simple average of 6 June. The summer like temperatures also helped to fire some afternoon thunderstorms over northern Iowa, which have been lacking of late as well. The summer weather looks to stick around into next week at least.

The featured media can be generated on-demand here

.

NWS Watch/Warning Summary for 12 AM 12 Jun 2025 - 12 AM 13 Jun 2025 CDT

Summary By WFO Watches
Type USIA ARXDVNDMXOAXFSD US
Tornado 4 0 0 0 0 0 0 0
Svr Tstorm 105 4 5 0 0 0 0 1
Flash Flood 40 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: 109 Verified:  33 [30.3%]
Polygon Size Versus County Size            [12.9%]
Average Perimeter Ratio                    [15.8%]
Percentage of Warned Area Verified (15km)  [14.8%]
Average Storm Based Warning Size           [1092 sq km]
Probability of Detection(higher is better) [0.68]
False Alarm Ratio (lower is better)        [0.70]
Critical Success Index (higher is better)  [0.26]

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