IEM Daily Bulletin for Mar 2 2026

[daryl herzmann]

Iowa Environmental Mesonet Daily Bulletin for 02 March 2026

News

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Daily Feature

'25-'26 Winter Storm #18
Date: 01 Mar 11:29 AM
Votes: Good: 9   Bad: 0 Abstain: 0

Extreme northeastern Iowa got clipped by a rather intense band of snowfall on Saturday. A few reports of six inches or more were found within Iowa and amounts approaching 10 inches just across the border into Minnesota. NWS La Crosse has created a nice summary of this event and explains the meteorology behind why it happened. For today, it will be far southwestern Iowa's turn to get clipped by a winter storm that will mostly stay to the south of Iowa. With it now being the first of March, it is not clear if these two storms constitute March "coming in like a lion or lamb", but it could certainly be a lot worst and even a lot better than the weather for today.

NWS Watch/Warning Summary for 12 AM 1 Mar 2026 - 12 AM 2 Mar 2026 CST

	Summary		By WFO					Watches
Type	US	IA	ARX	DVN	DMX	OAX	FSD	US
Tornado	0	0	0	0	0	0	0	0
Svr Tstorm	14	0	0	0	0	0	0	0
Flash Flood	1	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:  14 Verified:   4 [28.6%]
Polygon Size Versus County Size            [15.0%]
Average Perimeter Ratio                    [11.2%]
Percentage of Warned Area Verified (15km)  [16.9%]
Average Storm Based Warning Size           [723 sq km]
Probability of Detection(higher is better) [0.30]
False Alarm Ratio (lower is better)        [0.71]
Critical Success Index (higher is better)  [0.17]

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