Key Points – Thursday, September 21, 2017:
Synopsis: Good Thursday morning! Tracking very heavy rainfall across southeast Iowa this morning. These storms will gradually diminish through the morning hours, but we cannot rule out additional spotty storms later today into tonight. The main focus in this forecast will be a near stationary front that sets up across the western Plains Friday through early next week with a heavy rain and strong storm risk. Areas further east remain drier as an upper-level ridge builds in. This front will finally get pushed east early next week as the upper-level ridge breaks down, with much cooler temperatures moving back in. Details in today’s video. Have a blessed day, and let us know if you have any questions!
Today’s video (6:55):
Rainfall has been very significant across southeast Iowa along a stalled frontal boundary. A swath of 3-6″+ rains has set-up.
These storms across Iowa will gradually weaken through the morning, then becoming mainly dry by this afternoon. We cannot rule out a few additional spotty storms sneaking in late today through tonight, but a lack of forcing should keep coverage more isolated.
A few severe storms possible from central Nebraska to western Kansas late Friday afternoon through Friday night, as a front sets up across this region.
The weekend will feature a heavy rain/flooding threat across the western Plains, while areas east remain dry and hot under a ridge of high pressure. This front will begin to work east early next week.
Rainfall through early next week is shown below. 2-4″ of rain possible from Nebraska into western Kansas, remaining much drier further east.
High temperatures over the next 4 days:
Low temperatures over the next 4 nights stay exceptionally warm in many areas through the coming weekend, becoming much cooler to the west as a front gradually moves in.
Dew points from normal:
Wind forecast over the next 4 days:
