IEM Daily Bulletin for Oct 5 2025

[daryl herzmann]

Iowa Environmental Mesonet Daily Bulletin for 05 October 2025

News

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Daily Feature

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NWS Watch/Warning Summary for 12 AM 4 Oct 2025 - 12 AM 5 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	8	0	0	0	0	0	0	0
Flash Flood	3	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:   8 Verified:   3 [37.5%]
Polygon Size Versus County Size            [24.4%]
Average Perimeter Ratio                    [28.9%]
Percentage of Warned Area Verified (15km)  [9.2%]
Average Storm Based Warning Size           [2915 sq km]
Probability of Detection(higher is better) [0.31]
False Alarm Ratio (lower is better)        [0.62]
Critical Success Index (higher is better)  [0.20]