IEM Daily Bulletin for Oct 23 2025

[daryl herzmann]

Iowa Environmental Mesonet Daily Bulletin for 23 October 2025

News

No news is good news

IEM Code Pushes <repo,branch> on Github

Timestamp	Repository	Message	Link
Oct 22 9:29 PM	iem,main	✏️ Fix typo	Link

Daily Feature

Supplementing NCEI
Date: 22 Oct 05:30 AM
Votes: Good: 9   Bad: 0 Abstain: 0

The National Centers for Environmental Information (NCEI, formally NCDC) is the official US government source of climate information. Unfortunately, the current government shutdown has shuttered much of NCEI's product production, including their climate at a glance. This product provides monthly climate information for geographic areas ranging in size from the globe to cities. The IEM continues to attempt to independently replicate much of this dataset via expansive raw data processing and aggregation. The featured chart presents a comparison of yearly precipitation totals between the IEM and NCEI products for Iowa with positive values indicating the IEM estimate is higher than NCEI. While the overall bias is quite small, there are certainly periods of degraded performance and some systematic biases that likely could use some more work. A benefit of the IEM product is that it is available at a daily interval and updates in near real-time.

The featured media can be generated on-demand here

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NWS Watch/Warning Summary for 12 AM 22 Oct 2025 - 12 AM 23 Oct 2025 CDT

	Summary		By WFO					Watches
Type	US	IA	ARX	DVN	DMX	OAX	FSD	US
Tornado	0	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

No SVR+TOR Warnings Issued.