IEM Daily Bulletin for Jun 18 2025

[daryl herzmann]

Iowa Environmental Mesonet Daily Bulletin for 18 June 2025

News

No news is good news

IEM Code Pushes <repo,branch> on Github

Timestamp	Repository	Message	Link
Jun 17 7:38 AM	iem,main	📝 Sundry updates per log review	Link
Jun 17 8:49 AM	iem,main	🔥 Remove unused snet rates app	Link
Jun 17 8:59 AM	iem,main	🔥 Remove unused compare tool	Link
Jun 17 11:38 AM	iem,main	🎨 Continued bootstrap5 updates and modernization	Link
Jun 17 11:42 AM	iem,main	💚 Appease deepsource	Link
Jun 17 4:54 PM	iem,main	🐛 Add bootstrap5 tweaks needed	Link
Jun 17 5:01 PM	iem,main	💚 Tweak codeql	Link
Jun 17 9:53 PM	iem,main	🎨 Add `contiguous` option to state select	Link
Jun 17 9:57 PM	iem,main	📝 Polish plot	Link
Jun 18 5:40 AM	iem,main	🐛 Fix bootstrap5 button issue	Link
Jun 17 1:56 PM	iemone,main	⬆️ Update OL 10.6.0	Link
Jun 17 1:56 PM	iemone,main	✏️ Fix webcam refreshing logic	Link
Jun 17 2:12 PM	iemone,main	✨ Implement layer visibility persistence	Link
Jun 17 2:49 PM	iemone,main	🩺 Build out test infra	Link
Jun 17 2:55 PM	iemone,main	⬆️ Update precommit	Link
Jun 17 4:22 PM	iemone,main	♻️ Move test to tests	Link
Jun 17 4:31 PM	iemone,main	Bump the npm group with 3 updates Bumps the npm group with 3 updates: [babel-jest](https://github.com/jestjs/jest/tree/HEAD/packages/babel-jest), [jest](https://github.com/jestjs/jest/tree/HEAD/packages/jest) and [jest-environment-jsdom](https://github.com/jestjs/jest/tree/HEAD/packages/jest-environment-jsdom). Updates `babel-jest` from 29.7.0 to 30.0.0 - [Release notes](https://github.com/jestjs/jest/releases)">https://github.com/jestjs/jest/releases)">https://github.com/jestjs/jest/releases)">https://github.com/jestjs/jest/releases) - [Changelog](https://github.com/jestjs/jest/blob/main/CHANGELOG.md)">https://github.com/jestjs/jest/blob/main/CHANGELOG.md)">https://github.com/jestjs/jest/blob/main/CHANGELOG.md)">https://github.com/jestjs/jest/blob/main/CHANGELOG.md) - [Commits](https://github.com/jestjs/jest/commits/v30.0.0/packages/babel-jest) Updates `jest` from 29.7.0 to 30.0.0 - [Release notes](https://github.com/jestjs/jest/releases)">https://github.com/jestjs/jest/releases)">https://github.com/jestjs/jest/releases)">https://github.com/jestjs/jest/releases) - [Changelog](https://github.com/jestjs/jest/blob/main/CHANGELOG.md)">https://github.com/jestjs/jest/blob/main/CHANGELOG.md)">https://github.com/jestjs/jest/blob/main/CHANGELOG.md)">https://github.com/jestjs/jest/blob/main/CHANGELOG.md) - [Commits](https://github.com/jestjs/jest/commits/v30.0.0/packages/jest) Updates `jest-environment-jsdom` from 29.7.0 to 30.0.0 - [Release notes](https://github.com/jestjs/jest/releases)">https://github.com/jestjs/jest/releases)">https://github.com/jestjs/jest/releases)">https://github.com/jestjs/jest/releases) - [Changelog](https://github.com/jestjs/jest/blob/main/CHANGELOG.md)">https://github.com/jestjs/jest/blob/main/CHANGELOG.md)">https://github.com/jestjs/jest/blob/main/CHANGELOG.md)">https://github.com/jestjs/jest/blob/main/CHANGELOG.md) - [Commits](https://github.com/jestjs/jest/commits/v30.0.0/packages/jest-environment-jsdom) --- updated-dependencies: - dependency-name: babel-jest dependency-version: 30.0.0 dependency-type: direct:development update-type: version-update:semver-major dependency-group: npm - dependency-name: jest dependency-version: 30.0.0 dependency-type: direct:development update-type: version-update:semver-major dependency-group: npm - dependency-name: jest-environment-jsdom dependency-version: 30.0.0 dependency-type: direct:development update-type: version-update:semver-major dependency-group: npm ... Signed-off-by: dependabot[bot]	Link
Jun 18 6:54 AM	iemvtec,main	🐛 Fix and improve text printing	Link

Daily Feature

Reaching 90+ in June
Date: 17 Jun 05:30 AM
Votes: Good: 10   Bad: 0 Abstain: 0

After reaching 90+ degrees last week, much of the state is forecast to again be in the 90s for the upcoming weekend. So the featured chart checks in on hourly temperature distributions during June when the daily high temperature was at least 90°F for the same day for Des Moines. The distribution is presented as a violin plot, which attempts to represent the frequency distribution as the width of the shaded area. The distribution mean is shown by the centered red line with the extremes shown at the ends. Of notice is the average temperature is above 70°F for the overnight hours, which is likely a sign of a warm and humid air mass. The current forecast has such warm overnight temperatures for the end of this week.

The featured media can be generated on-demand here

.

NWS Watch/Warning Summary for 12 AM 17 Jun 2025 - 12 AM 18 Jun 2025 CDT

	Summary		By WFO					Watches
Type	US	IA	ARX	DVN	DMX	OAX	FSD	US
Tornado	25	0	0	0	0	0	0	1
Svr Tstorm	270	0	0	0	0	0	0	5
Flash Flood	29	2	0	0	0	0	2	---

ARX = LaCrosse, WI DVN = Davenport, IA DMX = Des Moines, IA OAX = Omaha, NE FSD = Sioux Falls, SD

IEM Cow Report

SVR+TOR Warnings Issued: 288 Verified: 116 [40.3%]
Polygon Size Versus County Size            [23.9%]
Average Perimeter Ratio                    [28.5%]
Percentage of Warned Area Verified (15km)  [19.2%]
Average Storm Based Warning Size           [1969 sq km]
Probability of Detection(higher is better) [0.87]
False Alarm Ratio (lower is better)        [0.60]
Critical Success Index (higher is better)  [0.38]