IEM Daily Bulletin for Jan 9 2026

[daryl herzmann]

Iowa Environmental Mesonet Daily Bulletin for 09 January 2026

News

No news is good news

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Daily Feature

60°F During First Week
Date: 08 Jan 05:30 AM
Votes: Good: 14   Bad: 0 Abstain: 0

Yesterday's daily Feature bemoaned that the really warm temperatures had mostly kept just to the west of Iowa. On Wednesday, a decent portion of the state got to experience very warm air for the first week of January with Des Moines setting a record high of 60°F. The featured chart presents the warmest daily high temperature each year for Des Moines during the first week of each year. Only four other years have seen such a warm temperature during this period with plenty of years not even seeing an above freezing temperature during it. Much closer to average temperatures are expected over the upcoming days, but nothing much for seasonally cold values.

The featured media can be generated on-demand here

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NWS Watch/Warning Summary for 12 AM 8 Jan 2026 - 12 AM 9 Jan 2026 CST

	Summary		By WFO					Watches
Type	US	IA	ARX	DVN	DMX	OAX	FSD	US
Tornado	10	0	0	0	0	0	0	1
Svr Tstorm	49	1	0	1	0	0	0	0
Flash Flood	2	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:  58 Verified:  13 [22.4%]
Polygon Size Versus County Size            [37.2%]
Average Perimeter Ratio                    [31.6%]
Percentage of Warned Area Verified (15km)  [5.6%]
Average Storm Based Warning Size           [2608 sq km]
Probability of Detection(higher is better) [0.47]
False Alarm Ratio (lower is better)        [0.78]
Critical Success Index (higher is better)  [0.18]