Before I get to the rain lets look back on this day in history.
Here is the weather summary from the NWS Des Moines
The earliest Iowa snowfall on record affected most of the western half of the state during the morning hours. September of 1881 was a wet month generally across the upper Midwest, and on the 15th a low pressure system moved northward over Chicago then turned west and stalled over Iowa on the 16th drawing unseasonably cool air into the state. As a result rain fell all day on the 15th then began to mix with snow at times across about the northwestern two thirds of Iowa on the morning of September 16th. At Sibley and Sac City the snow did not accumulate but observers indicated that ‘snow fell all day’ and at Algona an estimated 4 inches of snow fell between about 8 and 11 am with another observer there noting that tree branches were broken by the weight of the snow, which all melted by noon. At Des Moines the Weather Bureau observer noted ‘few flakes of snow was observed 1.15 pm.’ Snow was also reported at Sibley and Smithland in northwestern Iowa, at McGregor in the northeast, and in the south and southwest was observed as ‘quite heavy’ at Creston while several inches of snowfall were noted between Des Moines and Atlantic and 4 to 6 inches were estimated between Stuart and Avoca in Pottawattamie County. This incredible storm marks the earliest date of the fall on which any snow has ever been reliably recorded in Iowa.
Ok, now about the rain chances ahead. We are still tracking the chance of showers/storms for Thursday and Friday. A cold front is forecast to push east across Iowa Thursday. A round of showers/storms are possible in the morning and then again as the front gets closer in the afternoon and evening. Because it the front going to move slow, it will allow low pressure to move northeast along the front. This will enhance the rain chances Friday. So we will see a few rounds of showers/storms during the next two days. It won’t rain the entire time, but you should be ready for rain at any time.
Here is the total rain potential for Thursday and Friday combined.
Posted under Update
This post was written by Schnack on September 16, 2015