It’s been a generally hot and sunny day across KELOLAND. But, despite that, we’ve still got plenty of variety. Strong to severe storms are coming into far NW SD this afternoon, originating in Wyoming and Montana. The air out west is MUCH drier than we’re feeling in the east, although temps are about the same. That string of hazy, humid air goes from Omaha to the North Dakota border, hugging the I-29 corridor. Winds are also breezy East River, as a strong cold front sits right along the Missouri River.
That cold front will be the big weather story over the next few days. The air behind it is exceptionally dry, as we already mentioned. This system will cool everyone off tomorrow, as many of us drop 10-15°.
You’ll see storms popping up on radar this afternoon but many of these will struggle to reach the ground. That drier air undercutting everything could lead to gusty winds and plenty of dry lightning. Hail is also a possibility over the Black Hills. There’s still a large part of South Dakota that’s inside an elevated risk area for severe weather. Storms will form well behind the actual cold front. We could see a string of very spotty storms along the Missouri this afternoon, but nothing has formed thus far. The most likely scenario is that storms will favor the northern half of SD, pushing individual storms east towards Aberdeen by the overnight hours. Many of us keep a chance of morning showers in the forecast tomorrow morning. NW winds will stay breezy through the day, with clearing skies in the west.
Friday will be sunny but sharply cooler. Highs stay in the upper 60s to lower 70s. The weekend looks slightly warmer AND sunny, with a slim shot of rain arriving to Rapid City on Sunday. Our next best chance of rain is on Monday and again on Wednesday.