It’s time for the first forecast for the month of April. Hopefully, we’ll be a little more active this month, and the weather will start to get a little bit warmer.
At 1052, MT, Rapid City was reporting a temperature of 33 degrees with clear skies. Most of south Dakota was clear this evening, but that was leading to temperatures that were increasingly below normal for the beginning of April. A small consolation was the south wind across the state, associated with a warm front tied to low pressure centered directly to the north of Rapid City, near Spearfish. This area of low pressure was associated with a broader field of low pressure centered over Yellowstone.
As the feature moves over the Rockies Mountains, it will deepen in the lee area of eastern Colorado, though Raid City will remain in the warm sector of the low, as the warm front will continue to be analyzed through central South Dakota for most of the day on Monday. Cold air will begin to invade Montana and Wyoming at the back end of this system, likely reaching Rapid City by late Monday evening, and snow is likely to fall heavily through the night into Tuesday morning. Fortunately, the upper level trough, as well as the surface reflection will mature and move quickly. The sun will be shining by Tuesday afternoon, ready to melt the quick, fresh several inches of snow in the region.
Tomorrow – Mostly cloudy with flurries, becoming heavy snow late, High 42, Low 25
Tuesday – Heavy snow early, quickly clearing in the afternoon. 2-5″ storm total, High 32, Low 17
TWC: Tomorrow – Partly cloudy skies during the morning hours will give way to cloudy skies with light rain and snow developing in the afternoon. High 41, Low 25
Tuesday – Cloudy skies early, then partly cloudy in the afternoon. (early snow)High 32, Low 17
AW: Tomorrow – Rather cloudy with a shower in the area in the afternoon High 46, Low 22
Tuesday – A flurry around in the morning; otherwise, times of clouds and sun High 32, Low 16
NWS: Tomorrow – A 30 percent chance of rain after 3pm. Mostly cloudy (late snow), High 43, Low 26
Tuesday – A 20 percent chance of snow before noon. Mostly cloudy, High 30, Low 17
WB: Tomorrow – Partly cloudy in the morning with a 40 percent chance of rain in the afternoon (late snow) High 41, Low 22
Tuesday – Breezy. Mostly cloudy. A 20 percent chance of snow in the morning, High 31, Low 18
WN: Tomorrow – Mostly cloudy with light wintry mix likely. High 43, Low 24
Tuesday – Windy with isolated snow showers, High 30, low 17
FIO: Tomorrow – Snow (1–3 in.) starting in the evening. High 39, Low 24
Tuesday – Snow (< 1 in.) overnight. High 32, Low 16
Looks like I am on the high side for snow, but I also know that the Rapid City area is also on the high side, abutting the Black Hills as it does. Higher terrain is bound to have more snow. A look at the radar shows a few wisps of light rain close to the North Dakota border. It’s snowing to beat the band in Billings right now, and all that is moving to the east.