IEM Daily Bulletin for Jan 6 2026

[daryl herzmann]

Iowa Environmental Mesonet Daily Bulletin for 06 January 2026

News

No news is good news

IEM Code Pushes <repo,branch> on Github

Timestamp	Repository	Message	Link
Jan 5 8:11 AM	iem,main	📝 Cut back on email logged errors	Link
Jan 5 1:09 PM	iem,main	✨ Add column calendar layout to obs autoplot https://mesonet.agron.iastate.edu/plotting/auto/?q=82 closes #180	Link
Jan 5 6:49 PM	iem,main	🐛 Correct flowplayer usage	Link
Jan 5 8:44 PM	iem,main	📝 Sundry autoplot tweaks	Link
Jan 5 8:50 PM	iem,main	🎨 Cleanup CoD satellite archive viewer https://mesonet.agron.iastate.edu/archve/codsat/	Link
Jan 5 12:19 PM	iemone,main	[pre-commit.ci] pre-commit autoupdate updates: - [github.com/pre-commit/mirrors-eslint: v10.0.0-alpha.1 → v10.0.0-beta.0](https://github.com/pre-commit/mirrors-eslint/compare/v10.0.0-alpha.1...v10.0.0-beta.0)	Link
Jan 5 12:18 PM	iem-database,main	[pre-commit.ci] pre-commit autoupdate updates: - [github.com/astral-sh/ruff-pre-commit: v0.14.9 → v0.14.10](https://github.com/astral-sh/ruff-pre-commit/compare/v0.14.9...v0.14.10)	Link
Jan 5 12:19 PM	iem-web-services,main	[pre-commit.ci] pre-commit autoupdate updates: - [github.com/astral-sh/ruff-pre-commit: v0.14.8 → v0.14.10](https://github.com/astral-sh/ruff-pre-commit/compare/v0.14.8...v0.14.10)	Link

Daily Feature

2025 High Temp Days
Date: 05 Jan 05:30 AM
Votes: Good: 15   Bad: 0 Abstain: 0

There is still time to go back and review how the year 2025 stacked up. The featured chart presents the number of days per year that the high temperature was at least the given threshold value for Ames. The orange bars show the 2025 totals with the blue bars + labels representing the maximum value and which year(s) it occurred. The yellow dots show a simple long term average and the triangles show the minimum total on record. The year 2025 is shown above average for all plotted thresholds below 97°F. Totals for the previous year around 80°F are not far from record values. This chart is indicative of a climate change trend for Iowa, which is an increase in warm days, but not much for really hot days due to increased humidity levels during the summer.

The featured media can be generated on-demand here

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NWS Watch/Warning Summary for 12 AM 5 Jan 2026 - 12 AM 6 Jan 2026 CST

	Summary		By WFO					Watches
Type	US	IA	ARX	DVN	DMX	OAX	FSD	US
Tornado	1	0	0	0	0	0	0	0
Svr Tstorm	0	0	0	0	0	0	0	0
Flash Flood	0	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:   1 Verified:   0 [0.0%]
Polygon Size Versus County Size            [5.4%]
Average Perimeter Ratio                    [38.7%]
Percentage of Warned Area Verified (15km)  [0.0%]
Average Storm Based Warning Size           [126 sq km]
Probability of Detection(higher is better) [0.00]
False Alarm Ratio (lower is better)        [1.00]
Critical Success Index (higher is better)  [0.00]