IEM Daily Bulletin for Jul 6 2026

[daryl herzmann]

Iowa Environmental Mesonet Daily Bulletin for 06 July 2026

News

No news is good news

IEM Code Pushes <repo,branch> on Github

Timestamp	Repository	Message	Link
Jul 5 9:20 PM	iem,main	⬆️ Update eslint precommit	Link
Jul 5 9:20 PM	iem,main	📝 Use higher percentile value for dyn range cbar	Link

Daily Feature

No feature posted

NWS Watch/Warning Summary for 12 AM 5 Jul 2026 - 12 AM 6 Jul 2026 CDT

	Summary		By WFO					Watches
Type	US	IA	ARX	DVN	DMX	OAX	FSD	US
Tornado	8	0	0	0	0	0	0	0
Svr Tstorm	248	0	0	0	0	0	0	3
Flash Flood	69	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: 255 Verified: 113 [44.3%]
Polygon Size Versus County Size            [26.9%]
Average Perimeter Ratio                    [29.0%]
Percentage of Warned Area Verified (15km)  [18.3%]
Average Storm Based Warning Size           [1463 sq km]
Probability of Detection(higher is better) [0.76]
False Alarm Ratio (lower is better)        [0.56]
Critical Success Index (higher is better)  [0.39]

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): 3,173
• Mastodon / Fediverse: 32
• Slack: 144
• Twitter/X: 13,429
• HTTP Webhooks: 148
• Weather.IM Jabber Chatrooms: 18,468