Cub Impoundment, Minnesota Weather Forecast Discussion

970
FXUS63 KDLH 241109
AFDDLH
Area Forecast Discussion
National Weather Service Duluth MN
609 AM CDT Wed Sep 24 2025
.KEY MESSAGES...
- Areas of fog burn off this morning. Another round, not quite as
widespread, is possible Thursday morning.
- Mostly dry and warm through early to mid next week. A couple
  stray rain showers are possible along the border Saturday
  morning.
&&
.DISCUSSION...
Issued at 159 AM CDT Wed Sep 24 2025
Light winds, clear skies, and looming high pressure mixed with
lingering moisture have led to yet another morning with areas of
dense fog and Dense Fog Advisories remain in effect through mid
morning. That should burn off into a sunny day with high
temperatures in the high 60s to mid 70s. Higher precipitable water
continues to take its sweet time getting out of the area, so some
areas of dense fog could be possible again Thursday morning, most
likely for the Twin Ports and NW WI.
A dry cold front coming from a very weak upper level shortwave is
expected to saunter through Thursday into Friday. This should lead
to a very warm day with southwest winds Thursday ahead of the front -
temperatures are expected to rise into the mid to upper 70s, with
some spots seeing afternoon highs near 80F. Thursday may be one of
the only days Lake Superior doesn`t bring moderated temperatures to
coastal communities. As the front passes, winds should become
northeasterly and bring temperatures back into the 60s-low 70s range
(still above normal for this time of year). Another weak shortwave
Friday night into Saturday could bring some sprinkles or a light
rain shower to the Borderlands Saturday morning, but moisture is
limited and chances remain low (10-20%).
An omega blocking pattern sets up late this week into early next
week. Without a wavy upper level jet stream to brandish more
exciting low pressure systems our way, we`ll remain in a fairly
rinse and repeat forecast with little to no precipitation expected
and temperatures remaining slightly above normal. Global models are
in very good agreement through October 1 (next Wednesday) on this
high pressure sticking around, and then we start to see some
marginal PoPs return.
&&
.AVIATION /12Z TAFS THROUGH 12Z THURSDAY/...
Issued at 609 AM CDT Wed Sep 24 2025
MVFR to LIFR fog is expected to improve back to VFR conditions
through mid morning. VFR conditions with light winds should persist
through the day. Another round of fog may be possible Wednesday
evening into Thursday morning, most likely for DLH, HIB, and HYR.
&&
.MARINE /FOR NEAR SHORE WATERS OF WESTERN LAKE SUPERIOR/...
Issued at 159 AM CDT Wed Sep 24 2025
Light winds are expected today with an onshore lake breeze this
afternoon. Some dense fog could develop and persist in spots through
Thursday morning. Thursday, southwest winds pick up ahead of a dry
cold front and may gust around 15 knots, particularly along the
North Shore and in the Apostle Islands. Winds then turn to come out
of the northeast behind the front Friday, again with some gusts of
15-20 knots possible for the Outer Apostle Islands.
For the open water discussion, refer to the NWS Marquette Area
Forecast Discussion at weather.gov/mqt.
&&
.DLH WATCHES/WARNINGS/ADVISORIES...
MN...Dense Fog Advisory until 11 AM CDT this morning for MNZ010>012-
     018>020-025-026-033>038.
WI...Dense Fog Advisory until 11 AM CDT this morning for WIZ001>004-
     006>009.
MARINE...None.
&&
$$
DISCUSSION...Levens
AVIATION...Levens
MARINE...Levens

NWS DLH Office Area Forecast Discussion