Snow yesterday, melting today. Temperatures are only in the30s to low 40s, but the April sunshine has been strong enough to punch through the cloud cover to start reducing our recent snowpack. Winds are light, generally less than ten miles per hour.
Tonight we'll have partly cloudy skies, but there may be enough breaks to allow some fog to form due to today's snowmelt. Overnight lows will be in the low 20s East River to the upper 20s West River.
Tomorrow we begin a very strong but very short warmup. Skies will be partly to mostly sunny. Highs will be in the mid 40s in northern South Dakota to the 50s in the south. Rapid City should get into the low 60s. A west or southwest breeze will help with the warming process.
Wednesday we'll have partly cloudy skies, with clouds more numerous in northern South Dakota (and there could be some light showers in the northeast corner of the state). We'll have a gentle southerly breeze, but we expect temperatures will soar into the low 50s in the north, while April sunshine pushes the rest of KELOLAND into the upper 50s to low 60s.
Thursday will be partly to mostly sunny, with highs in the 50s to low 60s in all but NE South Dakota. We could see some rain showers late in the day in western South Dakota, the leading edge of a big weather system coming our way for the end of the week.
The likelihood of a powerful and large spring storm system on Friday and Saturday is increasing. We expect it to be windy both days, with rain mixing with or changing to snow. Thunderstorms will be possible in NW Iowa on Friday, and freezing rain will also be possible in eastern South Dakota and western Minnesota on the leading edge of the storm system that will probably affect most of the upper Midwest. We expect the effects of that storm system will continue into Sunday morning in eastern KELOLAND as the storm pulls away.
Temperatures will also be cooling back down. Highs will generally be in the 30s with those strong winds Saturday and Sunday. Behind the system we'll warm back into the 40s starting Monday.
But – unfortunately - looking at the long range models gives us a hint that temperatures will probably remain below normal for the following ten days.
Storm Center Update
Storm Center Update