Duluth, Minnesota 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

800
FXUS63 KDLH 021504
AFDDLH

Area Forecast Discussion
National Weather Service Duluth MN
1004 AM CDT Wed Apr 2 2025

.KEY MESSAGES...

- Another round of heavy snow is expected this afternoon.
  Snowfall rates at or above an inch per hour are possible in
  the late afternoon across the Iron Range and along the North
  Shore.

- Mixed precipitation across the southern half of the CWA is
  expected today as temperatures warm. Light ice accumulations
  are expected in east central Minnesota and northwest
  Wisconsin.

- Quieter conditions after the storm, with a round of light snow
  possible this weekend.

&&

.DISCUSSION...
Issued at 303 AM CDT Wed Apr 2 2025

A snow band currently across the southern Iron Range to the
Twin Ports to along the South Shore is bringing moderate
snowfall to the area. This band will shift north and eventually
dissipate as forcing weakens. There will be a brief lull in
precipitation this morning as the main round of precipitation
approaches. Precipitation is expected to begin again later this
morning. Any precipitation in northeast Minnesota will mostly
remain as snow. Another area of enhanced lift in the TROWAL will
lead to heavy snow across portions of northeast Minnesota,
mainly the Brainerd Lakes and Iron Range. Snowfall rates as high
as an inch per hour are possible later this afternoon.
Widespread snow totals across northeast Minnesota ranging 5-8
inches and locally higher totals up to 10 inches might be seen
across north central Minnesota.

Similarly, enhanced snowfall is expected along the North
Shore throughout today. In addition to enhanced omega and some
frontogenesis, orographic lift and lake enhancement will also
lead to snowfall rates around an inch per hour, and brief rates
up to 2 inches per hour in the point of the Arrowhead. Strong
winds off Lake Superior combined with the heavy snowfall rates
will lead to near white out conditions at times. A Blizzard
Warning was considered for the North Shore, but uncertainty in
white out conditions remaining constant throughout the day due
to low snow ratios limiting the potential of snow remaining
lofted lead us to keeping the Winter Storm Warning. However, if
conditions are expected to worsen a Blizzard Warning may need to
be issued later today. Snowfall rates should decrease again this
evening as the low continues to move northeast. Totals along the
North Shore ranging from 8-12 inches are expected with locally
higher totals up to 15 inches in higher terrain.

Precipitation across east central Minnesota and northwest
Wisconsin will likely already be or transitioning over to mix
later this morning. Temperatures aloft will warm faster than
the surface, leading to a brief period of freezing rain and/or
ice pellets before transitioning over to rain. A light glaze of
ice is possible in localized areas during this period. In
addition, continued warm air advection into the afternoon will
be accompanied by a few hundred J/kg of MUCAPE into northwest
Wisconsin. A few rumbles of thunder and small hail are possible
in the afternoon. Mixed precipitation will switch back to snow
later this evening and overnight as temperatures decrease.

Quieter weather will follow for the rest of the work week. This
weekend, a large low in Canada could bring some light snow to
the Northland, but little to no impacts are currently expected
from that system.

&&

.AVIATION /12Z TAFS THROUGH 12Z THURSDAY/...
Issued at 635 AM CDT Wed Apr 2 2025

MVFR to LIFR conditions with isolated LIFR conditions continue
this morning. Light to moderate snow will continue throughout
the morning, but there could be a brief break from lowered
conditions as a precipitation lull moves north towards the
Northland. However, it seems synoptic forcing is increasing, as
precipitation is starting to fill in to the south. Moderate
snowfall is expected later this afternoon and evening with the
back side of the low, and will mainly affect BRD, HIB, and INL.
Conditions will slowly improve late tonight as snow ends from
south to north.

&&

.MARINE /FOR NEAR SHORE WATERS OF WESTERN LAKE SUPERIOR/...
Issued at 1004 AM CDT Wed Apr 2 2025

Strong east to northeast wind are expected today with gales for much
of western Lake Superior occurring today into this evening as low
pressure moves through. A Gale Warning remains in effect for all the
near shore waters in western Lake Superior except from Bayfield to
Saxon Harbor, who have a Small Craft Advisories in effect. With the
expected tight pressure gradient force developing this afternoon and
evening, Storm Force wind gusts up to 50 knots are expected along
the North Shore from Silver Bay to Grand Portage. A Storm Warning
has been issued for these nearshore waters. Expect very high waves
to occur across much of the western arm of Lake Superior with
highest waves of 8 to 13 feet along the North Shore above Silver
Bay. Winds and waves decrease tonight into Thursday morning as the
low pressure moves east and high pressure begins to build.

For the open water discussion, refer to the NWS Marquette Area
Forecast Discussion at weather.gov/mqt.

&&

.DLH WATCHES/WARNINGS/ADVISORIES...
MN...Winter Storm Warning until 7 PM CDT this evening for
     MNZ010>012-018>021-025-026-033>037.
     Winter Weather Advisory until 1 PM CDT this afternoon for
     MNZ038.
WI...Winter Weather Advisory until 1 PM CDT this afternoon for
     WIZ001>004-006>009.
MARINE...Small Craft Advisory until 10 AM CDT Thursday for LSZ121-147-
     148.
     Gale Warning until 4 PM CDT this afternoon for LSZ140>142.
     Storm Warning from 4 PM this afternoon to 10 PM CDT this
     evening for LSZ140>142.
     Gale Warning until 10 PM CDT this evening for LSZ143>146-150.

&&

$$

DISCUSSION...KML
AVIATION...KML
MARINE...Unruh