IEM Daily Bulletin for Jul 26 2024

[daryl herzmann]

Iowa Environmental Mesonet Daily Bulletin for 26 July 2024

News

No news is good news

IEM Code Pushes <to branch> on Github

• Jul 25 10:55 AM <main> mnt: improve coverage
• Jul 25 11:11 AM <main> doc: add example
• Jul 25 11:20 AM <main> fix: handle nodata
• Jul 25 11:38 AM <main> mnt: use sqlalchemy
• Jul 25 11:50 AM <main> fix: account for empty dataframe
• Jul 25 12:02 PM <main> ci: ensure setup data works
• Jul 25 12:12 PM <main> ci: pass psql location to store_test_data
• Jul 25 12:44 PM <main> fix: account for missing data
• Jul 25 12:58 PM <main> fix: check for netcdf existing
• Jul 25 1:00 PM <main> ci: consolidate set -e
• Jul 25 1:11 PM <main> Merge pull request #859 from akrherz/240724-5
  mnt: improve coverage
• Jul 25 2:40 PM <main> refactor autoplot ARG_STATION
• Jul 25 10:08 PM <main> feat: combine season+all in vtec timing
  https://mesonet.agron.iastate.edu/plotting/auto/?q=72
• Jul 25 10:09 PM <main> chore: bump ruff
• Jul 25 10:25 PM <main> fix: edge cases found in tests
• Jul 25 10:40 PM <main> fix: check that GFS/NDFD exists before use
• Jul 25 11:00 PM <main> Merge pull request #860 from akrherz/240725
  Omnibus

Daily Feature

Ames Heat Headlines
Date: 25 Jul 05:30 AM
Votes: Good: 6   Bad: 0 Abstain: 0

Heat and humidity continues to build this week with a return to hot conditions forecast for next week. To warn for dangerous levels of heat, the NWS has event headline types known as a Heat Advisory and Excessive Heat Warning. These products are generally guided by heat index values with some time duration requirements. The featured chart presents a simple frequency of these headline types by observed heat index at the Ames Airport weather station. While these point in time observations don't account for the duration requirements, the chart is still informative as values exceeding 105 degrees are more often than not covered by a headline and values above 110 are rarely not coincident with a headline.

The featured media can be generated on-demand here

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NWS Watch/Warning Summary for 12 AM 25 Jul 2024 - 12 AM 26 Jul 2024 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	68	0	0	0	0	0	0	1
Flash Flood	39	1	0	1	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:  68 Verified:  12 [17.6%]
Polygon Size Versus County Size            [6.8%]
Average Perimeter Ratio                    [12.9%]
Percentage of Warned Area Verified (15km)  [5.9%]
Average Storm Based Warning Size           [1611 sq km]
Probability of Detection(higher is better) [0.25]
False Alarm Ratio (lower is better)        [0.82]
Critical Success Index (higher is better)  [0.11]