textproduct: Aberdeen

KEY MESSAGES

- Hot and humid again today, even with a frontal boundary shifting south winds to northerly. Heat index values today in the mid to upper 90s, possibly 100F. A Heat Advisory is in effect for portions of central and northeast SD from 1 to 9 PM CDT

- Storm chances (20-40%) for Sunday with a wave that signals a change in the pattern to closer to average temperatures.

DISCUSSION

Issued at 106 AM CDT Fri Jul 17 2026

As of 1 AM CDT, temperatures around the area are in the mid to upper 70s with winds out of the southeast around 10 mph. Temperatures today are expected to rise once again into the 90s with heat index values in the upper 90s to around 100 degrees. The NBM has been a little overdone the last few days so dropped highs just a little over northern SD and east of the James Valley. A Heat Advisory has been issued for portions of central and northeast SD from 1 to 9 PM CDT.

A low and corresponding cold front will make its way across the area this afternoon bringing northerly winds to the area a slight cool down Saturday. Heat is expected to return Sunday and Monday. Following this, temperatures should moderate for the rest of the work week. A warm front will move across the area Sunday bringing a chance showers and thunderstorms. There is a 20-30% chance across north central SD during the morning hours and then across central and northeast SD during the evening to early overnight hours. No severe weather is expected at this time. The HRRR Smoke model is showing a plume of elevated smoke heading south out of Canada and into our area by mid afternoon. No surface smoke is expected at this time. The only impact looks to be a slight milky look to the sky. With this prolonged period of dry and warm weather, fuels have been drying out. Winds for the next few days don't look to be overly strong, gusts up to 25 mph, so fire concerns are low. However, Monday, with the Sunday low still over some of our east central counties, we are expecting some higher wind gusts which will elevated fire concerns, depending on how much precipitation, if any, we get with the possible storms Sunday.

AVIATION /06Z TAFS THROUGH 06Z SATURDAY/

Issued at 1225 AM CDT Fri Jul 17 2026

Terminals KABR,KATY,KPIR,KMBG

VFR conditions are expected through Friday.

ABR WATCHES/WARNINGS/ADVISORIES

SD...Heat Advisory from 1 PM CDT /noon MDT/ this afternoon to 9 PM CDT /8 PM MDT/ this evening for SDZ006>011-015>023- 033>037-045-048-051. MN...Heat Advisory from 1 PM this afternoon to 9 PM CDT this evening for MNZ039-046.