Area Forecast Discussion
Issued by NWS Aberdeen, SD

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876 FXUS63 KABR 131941 AFDABR Area Forecast Discussion National Weather Service Aberdeen SD 241 PM CDT Tue Apr 13 2021 .SHORT TERM...(This Evening through Wednesday Night) Issued at 239 PM CDT Tue Apr 13 2021 Cold conditions to continue through the short term forecast. Meanwhile, the upper system over the upper Mississippi River valley that`s been responsible for all the cold air and pcpn will gradually start to shear off to the east over the next 12-36hrs. One more wave rotating around the upper low will move through the northeast CWA tonight, with more light snow expected. Again, some light accumulations appear possible over especially the Glacial Lakes region. As the low pulls away, mid-level ridging will bring mainly dry conditions to the forecast area for Wednesday and Thursday. As for temperatures, they`re gonna remain below average yet for a couple more days as the cold airmass gradually moderates across the Northern Plains. .LONG TERM...(Thursday through Tuesday) Issued at 239 PM CDT Tue Apr 13 2021 The period starts out with the region between two upper level lows with a trough off to the northwest over Saskatchewan. One low will be situated over the central Rockies and one over the Great Lakes region. The western low will gradually open up and weaken as it progresses eastward across the area Thursday through Thursday night. Light precipitation in the form of both light rain and snow will accompany this system Thursday night into Friday, although will be limited mostly to areas along and west of the Missouri River. Light snow accumulations are possible mainly west river. As the weakened upper low moves out of the area, the Saskatchewan trough will dig in behind it Friday night, although no additional precipitation is expected with this system. Beyond the precipitation chances Thursday night into Friday, the extended period looks mostly dry and cool. Highs will generally be in the 40s with Sunday being the main exception. Temperatures Sunday will be much closer to average with highs in the 50s across most of the area. && .AVIATION...(For the 18Z TAFS through 18Z Wednesday Afternoon) Issued at 1219 PM CDT Tue Apr 13 2021 Terminals KABR,KATY,KPIR,KMBG Snow showers will continue across the region through the afternoon and into the evening. Visibility could occasionally be lowered with the stronger snow showers, especially at KABR and maybe KATY. Otherwise, winds will be strong and gusty into the evening hours before subsiding some. A mix of MVFR/VFR cigs is expected most areas through the taf valid period. && .ABR WATCHES/WARNINGS/ADVISORIES... SD...None. MN...None. && $$ SHORT TERM...TDK LONG TERM...Telken AVIATION...TDK is the U.S. government's official web portal to all federal, state and local government web resources and services.