Drought Buster?

rainDo you have any outdoor plans this weekend? If so, then you may want to have a backup plan as a storm system will move into the state later tonight, and last through the day on Sunday. Temperatures will be above freezing tonight and Saturday, so all precipitation that does fall, will fall as rain. However, in the Northeast corner of the state, temperatures will start off below freezing, so any initial precipitation that does fall, may be in the form of freezing rain. This freezing rain period will be brief so no major impacts are expected. Conditions over the state are favorable to support thunderstorms, especially in Southern Iowa, which will increase rainfall amounts. Much of the state can expect rainfall totals over an inch, and some areas could see locally higher amounts.
This much needed moisture will be appreciated, but the concern is that with rapid snow melt, and soil temperatures still below freezing, is that significant ponding will occur. Current ground temperatures are averaging around 31 degrees statewide, so most of this precipitation will not be able to soak into the ground, and instead will run off into the streams. Due to the rapid snow melt, areas of dense fog are also possible late tonight, early Saturday morning, and Saturday night.
Cooler temperatures will start to filter in behind the low pressure on Sunday, which will transition any precipitation to snow. No major snow accumulations are expected in much of the state. The only area that could see snow accumulations is far Northwest Iowa, where 2”-4” is possible. After the storm system pushes out of the state by Sunday afternoon, we dry out for next week and temperatures return to normal for this time of year.

Zach Sharpe

My name is Zach Sharpe. I am the president and forecaster for the Iowa Storm Chasing Network. You can find me on Twitter @Stormchaserzach and on Facebook at: https://www.facebook.com/stormchaserzach/

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