Storm Center Update- Friday PM, April 26th


Clouds have been increasing from west to east as an area of low pressure moves into western South Dakota. Temperatures have mostly been in the upper 50s, as winds turn to an easterly direction.

Tonight we will have a large area of rain moving west to east across KELOLAND. Winds will also increase, coming from the east and northeast. Low temperatures will fall into the 30s, so rainfall will mix with snow toward morning.

Tomorrow we will see rain and a rain/snow mix continue in the morning, and decrease from west to east during the midday period. The rest of tomorrow will be cloudy and breezy and cool, with highs only in the 40s East River to the low 50s West River. Sioux Falls and SE KELOLAND will feel even cooler, thanks to northeast winds 20-30 mph with higher gusts.

This will be a big, wet spring storm. A broad swath of KELOLAND will get a half-inch to an inch of rainfall – enough water to worsen areas where flooding conditions still exist. The potential for snowfall is a bit more problematic, because a difference of a degree or two at cloud level could have a huge impact on snowfall amounts. Currently we expect the heaviest swath of snow to be from Watertown and NE corner, south to Brookings, and across the Buffalo Ridge into SW Minnesota. But there will probably be significant melting of the initial snowfall due to warm and wet ground.

Sunday will be mostly cloudy and breezy and cool. The winds will be from a southerly direction, so highs will be a little warmer in the low to mid 50s East River, and the upper 50s West River. There could also be some light rain or a mix of light rain and light snow, mainly late in the day.

Rain showers will continue into Monday morning, as another shot of cold air comes our way. Monday’s highs will be in the mid to upper 40s – about fifteen degrees below normal.

Another system will come our way late Tuesday through Wednesday, with more rain than snow. Temperatures will continue to be cold, in the upper 40s to low 50s as we end April and begin May.

It does look like temperatures will be a little warmer – in the upper 50s to low 60s – for the end of next week through the following weekend (May 4-5).

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