488
FXUS63 KBIS 290953
AFDBIS

Area Forecast Discussion
National Weather Service Bismarck ND
353 AM CST Sat Nov 29 2025

.KEY MESSAGES...

- Snow will continue over much of western and central North
  Dakota, before ending later this morning and afternoon. An
  additional 1 to 2 inches of snow will be possible.

- Well below average temperatures are favored this weekend into
  early next week. Wind chill temperatures as low as 25 below
  zero will be possible both tonight and Sunday night.

- An active northwest flow is forecast for next week, with
  periodic chances for snow and fluctuations in daily
  temperatures.

&&

.DISCUSSION...
Issued at 350 AM CST Sat Nov 29 2025

Currently, upper level S/WV trough developing east into the
Dakotas early this morning, with its associated 700mb low
pushing south into north central/northeastern South Dakota.
Light snow continues across most of western and central ND,
with the more moderate to heavier snow now mainly to our south
now as forcing aloft associated with an upper jet streak moves
east, enhanced forcing with the mid level low farther south, and
decreasing isentropic upglide. However, will see continued
forcing for ascent ahead of the 500mb S/WV across the local area
for most of this morning, with the potential of another 1-2
inches of snow yet before things wind down later today. Thus,
opted to extend the Winter Weather Advisory to 18Z (noon CST)
with this product issuance.

Mid level wave continues southeast today, with northwest flow in
its wake and cold surface high pressure building into the
western Dakotas late afternoon. This surface high only slowly
builds east-southeast into tonight, lingering across the Dakotas
through Sunday before exiting to the southeast Sun night. While
cloud cover will be tricky to forecast, the general trend is
expected to be decreasing cloud cover today-tonight-through
Sunday, setting the stage for some cold nights tonight and Sun
night thanks to our recent snowfall. Widespread subzero lows are
forecast for the next couple of nights, along with min wind
chills nearing 25 below zero some locations.

We remain in a northwest flow regime through next week, with
embedded waves periodically moving through aloft. One of these
waves and an associated cold front is favored to impact the
region Tuesday and Wednesday, bringing milder temperatures on
Tuesday, snow chances Tuesday night, and another cold period on
Wednesday. While NBM hasn`t caught on yet, would anticipate some
breezy winds with the cold FROPA as well.

&&

.AVIATION /06Z TAFS THROUGH 06Z SUNDAY/...
Issued at 114 AM CST Sat Nov 29 2025

MVFR to IFR conditions in snow are expected to continue overnight
across most of western and central ND, with visibility generally
in the 1-3SM range in snow. Snow will gradually end from west to
east late tonight and Saturday, ending in western ND from 09 to 15
UTC, and in central ND between 15 and 21 UTC. In the wake of the
snow, MVFR ceilings are expected to persist Saturday an into
Saturday night at most terminals. East winds at 10-15 kt tonight
will gradually turn to the north-northwest on Saturday at similar
speeds.

&&

.BIS WATCHES/WARNINGS/ADVISORIES...
Winter Weather Advisory until noon CST /11 AM MST/ today for
NDZ017>020-031>035-040>047-050-051.

&&

$$

DISCUSSION...NH
AVIATION...NH