IEM Daily Bulletin for Jan 11 2026

[daryl herzmann]

Iowa Environmental Mesonet Daily Bulletin for 11 January 2026

News

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Daily Feature

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NWS Watch/Warning Summary for 12 AM 10 Jan 2026 - 12 AM 11 Jan 2026 CST

	Summary		By WFO					Watches
Type	US	IA	ARX	DVN	DMX	OAX	FSD	US
Tornado	8	0	0	0	0	0	0	1
Svr Tstorm	16	0	0	0	0	0	0	0
Flash Flood	17	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:  24 Verified:  10 [41.7%]
Polygon Size Versus County Size            [38.8%]
Average Perimeter Ratio                    [29.8%]
Percentage of Warned Area Verified (15km)  [21.0%]
Average Storm Based Warning Size           [2359 sq km]
Probability of Detection(higher is better) [0.65]
False Alarm Ratio (lower is better)        [0.58]
Critical Success Index (higher is better)  [0.34]