Milder but breezy conditions are expected on Halloween (during the day) but this will be replaced with colder temperatures and strong winds for Halloween night all thanks to a strong area of low pressure which passes by to our north on Saturday. Note: Gale and Storm Watches have been issued for portions of Lake Superior for Saturday into Sunday with a west to northwest gale event possible. This will be an offshore wind direction so the largest waves will be east of the Twin Ports and North Shore this weekend.
A shot of warmer air on southwesterly winds will occur ahead of this system on Saturday, and then will see winds shift to the northwest which will usher in a colder air mass Saturday night.
Highs on Saturday are expected to be in 40s, but a few locations may get into the lower 50s! Winds will be out of the southwest at 10 to 20 mph with gusts >30 mph.
Lows Saturday night will be in the 10s and 20s with winds shifting to the northwest at 15 to 30 mph with gusts >40 mph.
Note: Not looking at a whole lot of rain on Saturday, just a few passing showers. As for snowfall totals, not much, maybe up to an inch of snow Saturday night across northern Minnesota, but higher totals of 1 to 4 inches are possible late Saturday night into Sunday morning due to some lake effect snow along the South Shore of Lake Superior mainly around the Gile, Upson and Hurley areas west toward Mellen.
18z NAM 3km radar forecast valid 7 AM Saturday to 7 AM Sunday.
Our system for Saturday is a strong one, a lot of energy with it, but not much moisture so precipitation should remain light and spotty as this system moves across the Northland.
Goes-16 water vapor loop from Friday, October 30, 2020.
Note: Loop time ends 4:20 PM Friday.
A brief surge of warmer air currently over the Northern Rockies and the Northern Plains this Friday afternoon will move quickly east and over the Northland Saturday morning, and then will see another brief surge of cold air move in Saturday night into Sunday.
|Halloween Climate Stats for Duluth, Minnesota|
Period: 1874 to 2019
Warmest: 74 degrees in 1950
Coldest: 8 degrees in 1878
Wettest: 1.09″ in 1929
Snowiest: 4.2″ in 1991
Greatest snow depth: 4″ in 2017 and 1951
Halloween Climate Stats from 2000-2019
Warmest: 60 degrees in 2000
Coldest: 18 degrees in 2002
Wettest: 0.13″ in 2013
Snowiest: Trace in multiple years including 2019, 2009, 2007, 2006 and 2003
Although temperatures are still below normal this afternoon, it really wasn’t too bad today as highs topped out in the mid 30s to low 40s (roughly 5 to 10 degrees below normal on October 30th)
The Northland saw quite a bit of sunshine today, but an area of clouds has been moving NNE across parts of north-central and eastern Minnesota today.
Goes-16 visible satellite image from Friday, October 30, 2020.
Note: Loop time ends ~4:30 PM.
Everything remains on track for a big time warm up across the Northland next week, with a few days likely having highs in the 50s and possibly even a few 60s!
Next week is also looking mainly dry at this time.
Note: There are signs showing up in model guidance for a colder/wetter pattern developing after November 7th.
Thanks for reading!