IEM Daily Bulletin for Mar 9 2026

[daryl herzmann]

Iowa Environmental Mesonet Daily Bulletin for 09 March 2026

News

No news is good news

IEM Code Pushes <repo,branch> on Github

Timestamp	Repository	Message	Link
Mar 8 11:43 AM	iem,main	📝 Sundry updates per log review	Link
Mar 8 12:05 PM	iem,main	💚 Address test failures	Link

Daily Feature

No feature posted

NWS Watch/Warning Summary for 12 AM 8 Mar 2026 - 12 AM 9 Mar 2026 CDT

	Summary		By WFO					Watches
Type	US	IA	ARX	DVN	DMX	OAX	FSD	US
Tornado	0	0	0	0	0	0	0	0
Svr Tstorm	6	0	0	0	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:   6 Verified:   0 [0.0%]
Polygon Size Versus County Size            [6.4%]
Average Perimeter Ratio                    [7.2%]
Percentage of Warned Area Verified (15km)  [0.0%]
Average Storm Based Warning Size           [609 sq km]
Probability of Detection(higher is better) [0.00]
False Alarm Ratio (lower is better)        [1.00]
Critical Success Index (higher is better)  [0.00]

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): 1,631
• Mastodon / Fediverse: 11
• Slack: 996
• Twitter/X: 12,675
• HTTP Webhooks: 26
• Weather.IM Jabber Chatrooms: 10,251