Regional Weather Summary
Issued by NWS Des Moines, IA

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AWUS83 KDMX 202218

Weather Summary for Iowa
National Weather Service Des Moines IA
518 PM CDT Tue Jun 20 2017

Quiet conditions were seen across much of the region this afternoon. A
weak low pressure system brought a boundary slowly through the state
of Iowa, with cooler temperatures in the 70s and low 80s to the north
of the boundary, and into the low 90s to the south. A few showers and
storms developed along this boundary as it approached Interstate 80
late in the afternoon, but the activity remained isolated and below
severe limits.

The local weather pattern will become more active beginning late
tonight and continuing through Thursday. A few showers and storms are
possible late tonight and early tomorrow in western Iowa. Attention
will then turn to the potential development of more widespread
showers and storms Wednesday evening and night. The best chances will
be in western and northern Iowa with a few severe storms possible. A
cold front will slowly sag south into central and southern Iowa on
Thursday, which will serve as the focus for additional thunderstorms.
In addition to a few more severe storms, locally heavy rainfall will
also be a potential hazard.

Much cooler conditions are expected Friday and through the weekend as
northwest winds deliver a shot of Canadian air. Below normal
temperatures are likely with highs in the 70s and lows in the 50s. A
few showers and storms are possible during this period, however
widespread precipitation is not likely and the threat for severe
weather should be low.

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