Fall 2015 Starting off Wet (9/22)

Iowa Shelf Cloud September 2015

Good afternoon… while writing this forecast, we are tracking a cluster of storms across western Iowa that has surprised us all by holding together all afternoon. There is still enough instability out there for this cluster of storms to continue holding together through early evening. A few of these storms earlier this afternoon across western Iowa were severe with large hail up to golf ball size, and 60mph wind gusts. It is forecasted that these storms will then dissipate after the sun sets this evening. Even with the cloud cover today, highs were still able to climb into the mid to lower 80’s across the state, and these warm temperatures will continue into Wednesday.

3 Day Forecast:

Wednesday: The remnants of a tropical depression will split the state in half. The western half of the state will be mostly cloudy with chances of rain throughout the day, while to the east, the sun will be out. Highs will range from the upper 70’s to lower 80’s.

Thursday:  Not a lot of change is expected from Wednesday. A few more clouds will build into eastern Iowa, making for a partly cloudy day. Highs will once again range from the upper 70’s to lower 80’s.

Friday: A ridge of high pressure will begin to build into the area, which will clear out the rain and make for a beautiful Friday. Highs will be in the upper 70’s to lower 80’s.

Iowa Rainfall ForecastThe main concern over the next couple days, will be the heavy rain potential over northwest Iowa. Rainfall totals of 1″ to 2″ will be possible, which will pose a flooding risk. The best time frame for heavy rain will be Wednesday evening into Thursday morning. Rain then clears out of the state late Thursday evening, making way for a dry Friday and weekend.

(Featured Image from Denison Iowa, taken by Randy Schraeder)


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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