674
FXUS63 KMPX 301824
AFDMPX

Area Forecast Discussion
National Weather Service Twin Cities/Chanhassen MN
124 PM CDT Sun Aug 30 2026

.KEY MESSAGES...

- Hot and humid today and tomorrow with heat index values into
  the low-mid 90s, highest in southern MN.

- Above normal temperatures with highs in the 80s to continue
  for the first week of September.

- Isolated showers/storms today with the next chance coming late
  Tuesday into early Wednesday.

&&

.DISCUSSION...
Issued at 219 AM CDT Sun Aug 30 2026

Today and Tonight... Today`s weather will be driven by warm air
advection. First and most obvious warm and moist air is moving
in brining us higher temperatures and dew points. This will
bring heat index values into the 90s with the higher values
south (southern MN/west central WI) and lower north (central
MN/northwest WI). This warm air advection will also occur along
a warm front and the lift from this front will provide some
chances for storm development. The challenge for CI will be
overcoming the cap we have in place this morning. So far this
cap has held and no development has been noted. For anything
that does occur this morning CI will need to occur over the
Dakotas and survive into Minnesota. We do have strong elevated
instability, so elevated storms could maintain themselves if
they have a deep enough updraft. This afternoon and evening
daytime heating should help to break this cap, but the front
will lift north such that chances will be mainly in central and
northern Minnesota. The main severe chance will be tied more to
the cold front moving across the Dakotas. So severe will be tied
to storms that initiate to the west and track into Minnesota
overnight. How linear this storms go will play a big part in
determining the risk type. More linear being more wind and more
discrete favoring hail. SPC has also noted a low tornado chance
tied to the area along the warm front.

Monday and Tuesday... The cold front will pass through Minnesota on
Monday providing some relief from the moisture. This will keep
the higher dew points and therefore the heat index values above
90 in western Wisconsin. With clearer skies temperatures won`t
be much cooler, if at all, in Minnesota but the lower dew points
will be noticeable. These lower dew points should spread into
Wisconsin on Tuesday expanding the relief.

Tuesday night into Wednesday... Another shortwave trough moving
across the plains will provide our next chance for rain Tuesday
night into Wednesday. Thankfully this looks more like what we
saw on Saturday morning with a more widespread light rain rather
than the more isolated nature of what is forecast for today.
Looking at forecast soundings the greatest challenge will be
low level dry air. This means it will take a while before rain
starts to reach the surface. This will also be a limiting factor
in strong storms, as it will greatly limit instability. Looking
towards ensemble systems there is actually good agreement for
this far out, which is why we are already seeing higher PoPs in
the NBM. Just more of a timing displacement right now with the
GEFS/GEPS earlier than the ENS.

Rest of the Week... Ensembles get much more dispersive after
Wednesday, but continue to show activity. This remains the same
long term forecast we have had for much of the past week with a
more active and warm pattern. This keep highs in the 80s with a
low confidence of which days will see rain until at least the
mid range forecast (about 3 days out).

&&

.AVIATION /18Z TAFS THROUGH 00Z TUESDAY/...
Issued at 1241 PM CDT Sun Aug 30 2026

Aside from a diminishing number of pockets of MVFR ceilings at
initialization, VFR conditions will prevail throughout this TAF
duration with passing high clouds. Few sprinkles are possible in
the next 1-2 hrs at the WI TAF sites but nothing of any
significance. Winds will run SE through this evening, a little
breezy/gusty until sunset then settling to near 5 kts this
evening through overnight, with winds shifting to SW the NW by
late tomorrow morning.

KMSP...No additional concerns.

/OUTLOOK FOR KMSP/
TUE...VFR. Wind SW to W 5 kts.
WED...Early AM TSRA/MVFR then VFR. Wind E 5 kts.
THU...VFR. Wind SE 5-10 kts.

&&

.MPX WATCHES/WARNINGS/ADVISORIES...
MN...None.
WI...None.

&&

$$

DISCUSSION...NDC
AVIATION...JPC