311
FXUS63 KABR 120211 AAB
AFDABR

Area Forecast Discussion...UPDATED
National Weather Service Aberdeen SD
911 PM CDT Thu Jun 11 2026

.KEY MESSAGES...

- Isolated to widely scattered showers tracking across the
  region this evening should continue to dissipate over the next
  couple of hours.

- After a brief warmup on Friday with highs in the 80s, cooler
  temperatures are expected this weekend, ranging in low to mid
  70s. This is about 5-10 degrees below normal for this time of
  year.

&&

.UPDATE...
Issued at 906 PM CDT Thu Jun 11 2026

The CWA will remain in the pressure gradient between high
pressure to the west and low pressure off to the northeast,
keeping a light west or southwest wind going overnight. The
rest of this evening through the overnight is trending dry, and
is well covered by the current forecast. Low temperatures
generally between 50F and 55F look good with a drier airmass in
place.

UPDATE Issued at 610 PM CDT Thu Jun 11 2026

See below for an aviation forecast discussion for the 00Z TAFs.

&&

.DISCUSSION...
Issued at 200 PM CDT Thu Jun 11 2026

Keeping a close eye on wind observations this afternoon, and
widespread 30-40 mile per hour gusts have been observed as of 18Z.
The highest winds so far have been located over Lyman County, which
remains in line with expectations from previous forecasts. There may
still be a stray gust or two that reaches Wind Advisory criteria (45
miles per hour), but mid-level support still appears to be lacking
for a widespread, long duration Wind Advisory event.

Light rain showers are also making their way across the forecast
area this afternoon, with two main areas of focus currently. Showers
over eastern South Dakota are expected to move out of the forecast
area within the next hour or two, while showers over north central
South Dakota will continue to progress eastward over the rest of the
afternoon. With some marginal MUCAPE (~500 J/kg) in the area, can`t
entirely rule out some isolated thunderstorm development as the
latter  group of storms tracks into the James River Valley this
afternoon. However, no lightning has been observed thus far with
these showers. Any storms that remain over the area this evening
will begin to dissipate, as MUCAPE will begin to diminish around 00Z
thereby shutting down the already weak convection. A front will
drift southward over the forecast area on Friday, potentially
bringing additional chances for some light rain showers, the highest
of those chances being over eastern South Dakota. Similar to today`s
rain showers, can`t entirely rule out some isolated weak
thunderstorms. However, no severe weather is anticipated at this
time.

After a brief warmup Friday, the colder airmass held in place by a
longwave trough aloft will bring the return of cooler temperatures
to the Northern Plains. Highs over the weekend and into the start of
next week will be in the low to mid 70s across the forecast area,
which is around 5-10 degrees below mid-June normals. Some light rain
showers may be possible early week, but at this point indications
are that conditions will not be favorable for severe weather. There
is some signal for a warmup and a return to near-normal to perhaps
slightly above normal temperatures by mid to late week next week.
However at this point in the forecast, ensemble clusters show low
confidence on the timing of when this warmup will take place.

&&

.AVIATION /00Z TAFS THROUGH 00Z SATURDAY/...
Issued at 610 PM CDT Thu Jun 11 2026

Terminals KABR,KATY,KPIR,KMBG

VFR conditions are forecast to prevail over the next 24 hours.
Isolated to widely scattered showers will persist across the
region for several more hours before tapering off later this
evening into the early overnight hours. For the time being,
KABR/KATY and KMBG have the greatest likelihood of
experiencing one of these showers (fairly low probability of
sub-VFR conditions with any of these showers). But, if it looks
like something might even get into KPIR, will make the necessary
adjustments as needed.

&&

.ABR WATCHES/WARNINGS/ADVISORIES...
SD...None.
MN...None.

&&

$$

UPDATE...10
DISCUSSION...BC
AVIATION...10