Storm Center Update- Tuesday AM, April 9th


Good Morning!

We continue to monitor the latest develops on this major and perhaps historic storm in KELOLAND.  The track continues show an area of low pressure to our south Wednesday through Friday.  The latest developments show a slight shift to the north, which will likely imapct southeastern KELOLAND in terms of the precipitation type. 

First, the blizzard threat is high in the area shaded in bright white.  The second area shaded in white is for a blizzard with less snow on Thursday.  We’ll be dealing with more mixed precipitation in the southeast.

The ice threat is still on the table for the southeast.  This is very challenging to forecast as a slight shift in the temperature forecast and storm track will have significant implications on the results of this on powerlines and trees.  It’s not a guarantee that we’ll see big icing, but the chance is there and it’s certainly something to watch.

Here are the timeline issues to watch.  We are watching the heaviest snow threat in the dark blue area, where snowfall rates could exceed 2 inches per hour at times tomorrow.  Sioux Falls will have a mixed bag of precipitation, making snow predictions challenging at the start.  Thunderstorms could roll across far southern KELOLAND.

A major blizzard will move through much of the region west and north of Sioux Falls Thursday.  The southeast will switch to heavy wet snow as well and join the pack.  The total snowfall will be lower southeast of Sioux Falls due to the longer duration of mixed precipitation.

Left over snow will continue on Friday along with wind.  There will be a significant amount of drifting with this storm, so it will be a process to dig out.

Total snow predictions feature 1 to 2 feet in a wide area across western, central, into eastern KELOLAND.  Note Sioux Falls in on the southern edge of the heaviest snow band due to the freezing rain, sleet, and rain chances.  Also, there could still be dry air issues to battle along the North Dakota/South Dakota border.

Total water from this storm is very impressive.  There will be more river flooding after this storm, but hopefully not as bad as March levels.  It’s worth watching, however.

Scattered showers are ahead today with highs in the 50s and lower 60s, giving us good weather to prepare for the storm.

There is nothing warm in the 7 day forecast.  We’ll hope for 50 by Monday.  

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