IEM Daily Bulletin for Jul 7 2026

[daryl herzmann]

Iowa Environmental Mesonet Daily Bulletin for 07 July 2026

News

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Daily Feature

2-4 July 2026 Precipitation
Date: 06 Jul 05:30 AM
Votes: Good: 16   Bad: 1 Abstain: 0

Multiple rounds of slow moving thunderstorms from Thursday into Saturday created for some very large precipitation totals over mostly central Iowa. The previous IEM daily feature highlighted the overnight rainfall totals into Friday morning. Today's featured map presents MRMS precipitation estimates for the three day period including 2 through 4 July. A considerable portion of the state is shown over four inches for just these three days. Remarkably, even with all of these rounds of thunderstorms, there are a couple of small areas shown with zero precipitation over far southern Iowa.

The featured media can be generated on-demand here

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NWS Watch/Warning Summary for 12 AM 6 Jul 2026 - 12 AM 7 Jul 2026 CDT

	Summary		By WFO					Watches
Type	US	IA	ARX	DVN	DMX	OAX	FSD	US
Tornado	5	0	0	0	0	0	0	0
Svr Tstorm	165	0	0	0	0	0	1	3
Flash Flood	84	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: 169 Verified:  75 [44.4%]
Polygon Size Versus County Size            [23.4%]
Average Perimeter Ratio                    [24.4%]
Percentage of Warned Area Verified (15km)  [19.9%]
Average Storm Based Warning Size           [1562 sq km]
Probability of Detection(higher is better) [0.77]
False Alarm Ratio (lower is better)        [0.56]
Critical Success Index (higher is better)  [0.39]

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