textproduct: Aberdeen

KEY MESSAGES

- Wind chills of -20 to near -40 degrees will continue through mid morning, with the lowest readings across the Leola Hills of north central and Prairie Coteau of northeastern South Dakota.

- Southwest winds increase today causing downslope gusts to 50 mph along the Prairie Coteau. A wind advisory is in effect from mid morning through mid afternoon. Drifting snow and blow ice may cause slippery roads especially along I-29.

- Temperatures briefly return to near normal values today, with highs in the upper teens and 20s. 30s are expected across Stanley, Jones, and Lyman Counties.

- Temperatures will return to below normal values Monday night through Friday, with highs 10 to 20 degrees below normal.

SHORT TERM /TODAY THROUGH TUESDAY AFTERNOON/

Issued at 248 AM CST Mon Jan 26 2026

Bitterly cold wind chills in the -25 to -40 degree range continue early this morning. As the upper trough slides southeast, southwest winds increase at the sfc and heights rise aloft. This will usher in some warmer temperatures this morning from the west. More seasonable highs in the upper teens to mid 30s are expected today as a result, though they will be short-lived. As winds increase with gusts generally in the 25 to 35 mph range, downslope winds will develop along the Coteau with gusts to 50 mph. With the very limited snow depth, drifting snow is more of a concern than blowing snow. Roads may be slippery from blow ice. Issued a wind advisory starting as the Cold Weather Advisory expires this morning for areas along the Coteau ridgeline.

Another upper trough slides into eastern ND/MN tonight. A 1030s high then builds in at the sfc on Tuesday. Both of these features will reintroduce below normal temps. Highs on Tuesday will range from the single digits east of the James Valley to the lower 20s in south central SD. Added in a little NBM 10th percentile again for temperatures through the short term.

LONG TERM /TUESDAY EVENING THROUGH SUNDAY/

Issued at 248 AM CST Mon Jan 26 2026

The long term starts Tuesday night with an upper low off to our north over eastern ND and northern MN. This low will move east and out of the region during the day Wednesday. Another low moves into the Great Lakes region late Thursday with the trough reaching back into the eastern Dakotas. Sunday, a shortwave moves south out of Canada. Down at the surface, Wednesday we will be under high pressure until a surface low moves through western SD on Thursday, bringing a chance for some light snow. We are once again under high pressure Friday before that shortwave moves through bringing a chance for some light snow again on Saturday.

Starting with the Thursday light snow chances, PoPs top out around 30%, mainly over central SD. The probability of more than an inch of snow is around or less than 20% with the highest chances over central SD. Some snow could continue into Friday morning. For the Saturday snow, chances of more than an inch are again around or less than 20% with highest chances mainly over the James River area. PoPs for this also top out around 30%.

Temperatures during the period will start out below average by 10-15 degrees, and then see a nice jump to 5-10 degrees above average for the weekend. Winds still aren't expected to be anything special during the period. Friday morning looks to be a little on the chilly side with widespread wind chills in the -20 to -25 degree range.

AVIATION /12Z TAFS THROUGH 12Z TUESDAY/

Issued at 525 AM CST Mon Jan 26 2026

Terminals KABR,KATY,KPIR,KMBG

VFR conditions are expected through the period. Southwest winds increase this morning with gusts to 30 kts. Winds shift to the northwest tonight.

ABR WATCHES/WARNINGS/ADVISORIES

SD...Cold Weather Advisory until 9 AM CST this morning for SDZ004>011- 016>023-034>037-045-048-051.

Wind Advisory from 9 AM this morning to 3 PM CST this afternoon for SDZ007-008-020-021-023.

MN...Cold Weather Advisory until 9 AM CST this morning for MNZ039-046.