Iowa Environmental Mesonet Daily Bulletin for 23 April 2019

News

No news is good news

IEM Code Pushes <to branch> on Github



Daily Feature

April Temps + Dew Points
Date: 22 Apr 05:34 AM
Votes: Good: 8   Bad: 0 Abstain: 0

Temperatures on Easter Sunday soared into the 80s for much of Iowa. Dew point temperatures remained comfortable around 50 degrees of less. That combination is typical for this time of year which makes the 80 degree temperatures feel so amazing (low humidity). The featured chart shows the combination of average dew point by air temperature during April for Des Moines. Yesterday's weather was above average as shown by the chart. Of course, such combinations during summer months in Iowa are very rare as elevated humidity comes to visit for the summer and generally refuses to leave.

NWS Watch/Warning Summary for 12 AM 22 Apr 2019 - 12 AM 23 Apr 2019 CDT

Summary By WFO Watches
Type USIA ARXDVNDMXOAXFSD US
Tornado 1 0 0 0 0 0 0 0
Svr Tstorm 30 4 0 12 0 0 1 1
Flash Flood 1 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: 26 Verified: 8  [30.8 %]
Reduction of Size Versus County Based     [73.6 %]
Average Perimeter Ratio                   [25.2 %]
Percentage of Warned Area Verified (15km) [10.5 %]
Average Storm Based Warning Size          [1976 sq km]
Probability of Detection(higher is better)[0.67]
False Alarm Ratio (lower is better)       [0.69]
Critical Success Index (higher is better) [0.27]