IEM Daily Bulletin for Jun 8 2026

[daryl herzmann]

Iowa Environmental Mesonet Daily Bulletin for 08 June 2026

News

No news is good news

IEM Code Pushes <repo,branch> on Github

Timestamp	Repository	Message	Link
Jun 7 11:05 PM	iem,main	🎨 Sundry cleanups	Link

Daily Feature

No feature posted

NWS Watch/Warning Summary for 12 AM 7 Jun 2026 - 12 AM 8 Jun 2026 CDT

	Summary		By WFO					Watches
Type	US	IA	ARX	DVN	DMX	OAX	FSD	US
Tornado	20	0	0	1	0	0	0	1
Svr Tstorm	98	0	0	0	0	0	0	1
Flash Flood	37	2	0	4	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: 115 Verified:  41 [35.7%]
Polygon Size Versus County Size            [29.3%]
Average Perimeter Ratio                    [24.6%]
Percentage of Warned Area Verified (15km)  [12.8%]
Average Storm Based Warning Size           [3149 sq km]
Probability of Detection(higher is better) [0.70]
False Alarm Ratio (lower is better)        [0.64]
Critical Success Index (higher is better)  [0.31]

IEMBot Social Media Posts

IEMBot can be configured to post messages to a number of social media services. More details: IEMBot Homepage.

Posts yesterday per supported service:

• ATMosphere (bluesky only attm): 2,333
• Mastodon / Fediverse: 41
• Slack: 115
• Twitter/X: 10,051
• HTTP Webhooks: 323
• Weather.IM Jabber Chatrooms: 13,739