textproduct: Aberdeen

KEY MESSAGES

- A dangerous and prolonged heat wave will continue through this week with near record to record temperatures expected and heat index values warming into the triple digits each afternoon.

- An Extreme Heat Warning for north central SD and a Heat Advisory for parts of central and northeast SD and west central MN have been extended through Thursday.

- The combination of humidity dropping below 20%, wind gusts of 20- 35 mph, and drying fuels will lead to elevated fire danger concerns across portions of north central SD each afternoon through Tuesday. A Fire Weather Watch has been issued for portions of north central SD for Monday afternoon.

UPDATE

Issued at 550 PM CDT Sun Jul 12 2026

The ongoing forecast remains on track, with few changes need at this time.

DISCUSSION

Issued at 1235 PM CDT Sun Jul 12 2026

The persistent, strong heat dome will remain over the region through this week. Extended the heat headlines through Thursday evening for now, even though Wednesday's HI values may be a little lower due to more widespread breezy conditions. The wind and drier air with slightly lower dewpoints moving into central SD will result in both higher actual temperatures and slightly lower "feels-like" temperatures. However, southerly winds gusting 25 to 35 mph Monday will also bring high fire danger to areas along the Missouri River as grasses cure. Issued a Fire Weather Watch for portions of north central SD for Monday afternoon with RH falling into the upper teens. Tuesday is actually the day with more widespread low RH, but winds are more marginal so will need to evaluate fire concerns on a daily basis going forward.

The core of the upper ridge finally begins to migrate south and east Friday into Saturday. A cold front trails through early Saturday but doesn't seem to have any significant precip/moisture with it. Global models keep any showers to the north or southwest. Could potentially see a break to highs in the 90s/100s the latter half of next weekend behind the sfc cold front.

AVIATION /00Z TAFS THROUGH 00Z TUESDAY/

Issued at 550 PM CDT Sun Jul 12 2026

Terminals KABR,KATY,KPIR,KMBG

VFR conditions will continue through the next 24 hours.

ABR WATCHES/WARNINGS/ADVISORIES

SD...Heat Advisory until 10 PM CDT /9 PM MDT/ Thursday for SDZ005>008-010-011-017-018-021-033>037-045-048-051. Extreme Heat Warning until 10 PM CDT /9 PM MDT/ Thursday for SDZ003-004-009-015-016. Fire Weather Watch from Monday afternoon through Monday evening for SDZ003-004-015. MN...Heat Advisory until 10 PM CDT Thursday for MNZ039-046.