textproduct: Aberdeen

KEY MESSAGES

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

- High temperatures briefly return to near normal values Monday, 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 around 10 to 20 degrees below normal.

UPDATE

Issued at 1123 PM CST Sun Jan 25 2026

Aviation discussion updated below for the 06Z TAFs.

UPDATE Issued at 832 PM CST Sun Jan 25 2026

Made some adjustments to the headlines earlier this evening to expand the Cold Weather Advisory westward, while also starting portions of the advisory a bit earlier. Temperatures are falling quickly into and through the teens below zero for most areas, under the surface high. Dropped lows a couple degrees in a few locations. Between 06Z and 12Z, southwest winds will increase as warm air advection kicks in as well. Still anticipating slowly rising temps during that time, but with bitterly cold wind chills from 20 below to nearly 40 below zero remaining in place.

DISCUSSION

Issued at 215 PM CST Sun Jan 25 2026

The current weather map shows a 1035mb surface high over northeastern SD and far southwestern ND. The surface high will reside over north central/central SD at 00Z Monday before quickly sinking across NE and into KS by late this evening.

The cold air and low wind chill readings will be the main concern over the next 24 hours. Wind chills of -20 to near -40 degrees will continue into Monday morning, with the lowest readings across the Leola Hills of north central and Prairie Coteau of northeastern South Dakota where the winds stay a little more elevated tonight with gusts of 15-25mph as the pressure gradient increases behind the exiting surface high. The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. A Cold Weather Advisory remains in effect tonight into mid-morning Monday, with McPherson County already in a Cold Weather Advisory due to the earlier onset of lower wind chills.

After lows in the -10 to -15 degree range, much warmer air briefly takes hold Monday afternoon behind a warm front extending south from a low across Hudson Bay/Canada. Temperatures will rise into the teens above to 20s above zero Monday. 30s are expected over south central South Dakota. Winds Monday, similar to today, have been increased from their original forecast. Winds out of the southwest at 12z Monday will shift out of the west by 18Z, and then out of the northwest through the rest of the afternoon with gusts of 30 to 40 mph. The strongest winds will be over the eastern slopes of the Prairie Coteau. These will be the strongest winds/gusts we experience through the work week.

The cold front will be sliding south across the forecast area Monday afternoon, with 850mb temperatures topping out between -2 and -8C at 18Z, falling -7 to -16C by 03Z Tuesday. Our brief return to seasonal normal temperatures will be just during the daytime hours Monday.

Cold Canadian high pressure will again build across the Northern Plains, and be overhead Tuesday afternoon into Tuesday night and stay over our far northeastern counties through at least Thursday evening as a weak lee trough tries to get better organized to our west.

Expect cold conditions, with highs around 10 to 20 degrees below normal for this time of year Tuesday through Friday. Mainly dry weather will continue through at least the first half of the work week, although it will be difficult to completely rule out flurries or a light dusting of snow over central SD.

AVIATION /06Z TAFS THROUGH 06Z TUESDAY/

Issued at 1123 PM CST Sun Jan 25 2026

Terminals KABR,KATY,KPIR,KMBG

VFR conditions are forecast through the TAF period. Low-level wind shear (LLWS) is expected at KMBG Monday morning.

ABR WATCHES/WARNINGS/ADVISORIES

SD...Cold Weather Advisory until 9 AM CST Monday for SDZ005>008-010- 011-017>023-036-037.

Cold Weather Advisory until 9 AM CST Monday for SDZ004-009-016- 034-035-045-048-051.

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