IEM Daily Bulletin for Oct 13 2025

[daryl herzmann]

Iowa Environmental Mesonet Daily Bulletin for 13 October 2025

News

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Daily Feature

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NWS Watch/Warning Summary for 12 AM 12 Oct 2025 - 12 AM 13 Oct 2025 CDT

	Summary		By WFO					Watches
Type	US	IA	ARX	DVN	DMX	OAX	FSD	US
Tornado	1	0	0	0	0	0	0	0
Svr Tstorm	2	0	0	0	0	0	0	0
Flash Flood	33	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:   3 Verified:   1 [33.3%]
Polygon Size Versus County Size            [2.0%]
Average Perimeter Ratio                    [9.1%]
Percentage of Warned Area Verified (15km)  [24.5%]
Average Storm Based Warning Size           [837 sq km]
Probability of Detection(higher is better) [0.17]
False Alarm Ratio (lower is better)        [0.67]
Critical Success Index (higher is better)  [0.12]