We are enjoying a last warm spring day. Well, it’s the first day of “weather” spring anyway. Under partly to mostly sunny skies, temperatures are again more than 20 degrees above normal across KELOLAND, with only a slight breeze.
Tonight will be partly cloudy, with temperatures remaining mild in the low 20s to 30s, with a gentle southerly breeze.
Tomorrow will not be as warm, although still above normal under partly cloudy skies. A ribbon of light snow showers will once again cross the northeast corner of South Dakota into western Minnesota, where there will be a brisk northeast wind. Areas south of this snowfall strip will be in the 50s, with Rapid City around 60 degrees.
This band of flurries accompanied by cooler air will pass through Sioux Falls and southern KELOLAND on Thursday morning. Snow showers can be mixed with rain showers, mainly in the southern half of KELOLAND. Thursday morning snowfall amounts increased slightly, with indications now that we could see one inch amounts. Afternoon highs will only be in the upper 20s in the north through the mid 30s in Sioux Falls and the SE with 40s in western South Dakota.
With a storm system developing in our southwest, Friday will be cloudy. Temperatures will be between 30 and 40 degrees, the coolest in the north. There could also be some wind, as we watch the storm system develop in the southwestern United States, as it will come through here. We expect snowfall to begin Friday evening and overnight, spreading SW to NE across KELOLAND by Saturday morning.
Saturday looks like widespread snowfall across KELOLAND. Due to the orientation of this system, coming from a low pressure system to our south, this storm on Friday evening and Saturday has the potential to give us several inches of snowfall, as well as somewhat gusty winds. This system seems to be the first sign of a change in our climate regime. The track of the system will also determine if we will have precipitation in Sioux Falls and SE KELOLAND early Saturday morning before the colder air turns us into snowfall.
Snow could persist early Saturday morning, depending on how fast the storm system moves away to the northeast. One thing that is more certain is that temperatures will be colder on Sunday and Monday, with highs only in the high 20s. Even the temperatures we forecast may need to be adjusted based on the possibility of snowfall. more important.
After that, be prepared for a prolonged cold spell. Indications are that we will be well below normal for temperatures until mid-March.