Iowa Environmental Mesonet Daily Bulletin for 22 June 2026

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NWS Watch/Warning Summary for 12 AM 21 Jun 2026 - 12 AM 22 Jun 2026 CDT

Summary By WFO Watches
Type USIA ARXDVNDMXOAXFSD US
Tornado 100 0 0 0 0 0 0 3
Svr Tstorm 173 0 0 0 0 0 0 8
Flash Flood 48 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: 257 Verified:  88 [34.2%]
Polygon Size Versus County Size            [27.1%]
Average Perimeter Ratio                    [32.9%]
Percentage of Warned Area Verified (15km)  [17.8%]
Average Storm Based Warning Size           [1278 sq km]
Probability of Detection(higher is better) [0.81]
False Alarm Ratio (lower is better)        [0.66]
Critical Success Index (higher is better)  [0.32]

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