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April 16, 2018 03:20 PM

Storm Center Update - Monday PM April 16

We are melting snow in eastern KELOLAND, but more because of the April sunshine than the temperatures. We will be near records for unusually cold afternoon highs. We have only been in the 30's to mid 50's across KELOLAND.

Sioux Falls

Tonight skies will be mostly clear, except for some mainly high clouds. It will be an unusually cool night, with lows in the teens to low 20's. It is not impossible we could sink to record lows on places where the snowpack is thickest, maybe even in Sioux Falls. A very light breeze will switch to a southeasterly direction.

Weather graphic

Tomorrow will be a clear to partly cloudy day East River, with a gentle easterly or southeasterly breeze. Highs will be in the mid 30's where there is thick snow cover, to the 40's where the ground is bare. A low pressure system will start to affect western and central South Dakota with light rain or snow that will move in from the west. It will be windy in the case of Rapid City and the west, with a brisk NE wind.

weather graphic

Wednesday will be snowy across the area, as a low pressure system parks in SE KELOLAND.  Temperatures will be in the mid 30's to low 40's in Eastern KELOLAND, and near 50 in the west. Winds will be strongest in SE KELOLAND, near the center of the low pressure system.

weather graphic

Much of KELOLAND will get some snow of 1-3”. But Sioux Falls and SE KELOLAND look like they’ll be getting heavier snowfall: 3”+. And the current forecast track puts the heaviest snowfall very close to the tri-state corner. A Winter Storm Watch is already posted for NW Iowa into southern Minnesota.

snowfall projections

After the snowfall ends Wednesday night, high pressure will bring sunny skies on Thursday and Friday, with slightly warmer temperatures in the upper 30's to low 40's where there’s snow cover, and the upper 40's where the ground is bare. There is another shot at rain showers or snowfall Friday into Saturday morning in western and central South Dakota – but it looks like that event will not impact eastern South Dakota.

storm watch

For the rest of the weekend, we expect a partly cloudy sky and temperatures that should slowly build back toward normal as the snow melts. Saturday’s highs will be in the 40's and 50's. Sunday we’ll be in the 50's across KELOLAND.

Monday will be partly to mostly sunny, and highs will actually be near our normal temperatures for late April – around 60 degrees.

Looking beyond the 7 day, long range models have consistently been bringing us a string of warm days for the final week of April – and that is still the way it looks! If you’ve been wondering where Spring is, it looks like it will be here just beyond the 7 day forecast starting next Tuesday.


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