IEM Daily Bulletin for Aug 3 2026

[daryl herzmann]

Iowa Environmental Mesonet Daily Bulletin for 03 August 2026

News

No news is good news

IEM Code Pushes <repo,branch> on Github

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Daily Feature

No feature posted

NWS Watch/Warning Summary for 12 AM 2 Aug 2026 - 12 AM 3 Aug 2026 CDT

	Summary		By WFO					Watches
Type	US	IA	ARX	DVN	DMX	OAX	FSD	US
Tornado	4	0	0	0	0	0	0	0
Svr Tstorm	30	0	0	0	0	0	0	0
Flash Flood	34	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:  34 Verified:  14 [41.2%]
Polygon Size Versus County Size            [19.5%]
Average Perimeter Ratio                    [27.7%]
Percentage of Warned Area Verified (15km)  [22.9%]
Average Storm Based Warning Size           [947 sq km]
Probability of Detection(higher is better) [0.58]
False Alarm Ratio (lower is better)        [0.59]
Critical Success Index (higher is better)  [0.32]

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): 2,361
• Mastodon / Fediverse: 12
• Slack: 1,753
• Twitter/X: 9,706
• HTTP Webhooks: 146
• Weather.IM Jabber Chatrooms: 13,244