IEM Daily Bulletin for Jul 3 2025

[daryl herzmann]

Iowa Environmental Mesonet Daily Bulletin for 03 July 2025

News

No news is good news

IEM Code Pushes <repo,branch> on Github

Timestamp	Repository	Message	Link
Jul 2 9:05 PM	iem,main	📝 Sundry updates per review	Link

Daily Feature

Corn's Doing Great
Date: 02 Jul 05:30 AM
Votes: Good: 14   Bad: 2 Abstain: 0

The weekly update from USDA NASS on Monday continued to indicate that the corn crop is in excellent shape for Iowa. The featured chart presents the weekly estimated percentage of the corn crop in either good or excellent condition for Iowa and Illinois. The yearly time series for each year back to 1986 is plotted with this year and the previous two years highlighted for comparison. The most recent 2025 value is only topped by about three other years on record for Iowa. The recent weather has been nearly ideal with plenty of heat units and frequent rainfall events, this was after a somewhat concerning start to June with a lack of warmth and sunshine.

The featured media can be generated on-demand here

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NWS Watch/Warning Summary for 12 AM 2 Jul 2025 - 12 AM 3 Jul 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	57	6	7	0	0	0	0	0
Flash Flood	31	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:  55 Verified:  11 [20.0%]
Polygon Size Versus County Size            [8.0%]
Average Perimeter Ratio                    [11.6%]
Percentage of Warned Area Verified (15km)  [7.7%]
Average Storm Based Warning Size           [1428 sq km]
Probability of Detection(higher is better) [0.39]
False Alarm Ratio (lower is better)        [0.80]
Critical Success Index (higher is better)  [0.15]