/Issued 5:57 PM CST, Saturday, January 20, 2018/
Here’s my preliminary snowfall forecast for Monday
Goes-16 water vapor satellite loop from Saturday, January 20, 2018 — A strong storm system over the southwest U.S. today will move out into the central Plains on Sunday.
Note: So far the winter of 2017-2018 is running 3 to 5 degrees colder than average at Duluth, Minnesota.
Another warm day around here with highs ranging from around 30 to the lower 40s with even a few middle 40s along the North Shore of Lake Superior, so yes a little warmer than what was forecast today, but I don’t think anyone was complaining. Strong upper level winds of 130-150 knots were over the Northland late this afternoon while a vigorous upper level trough with 12-hour 500mb height falls of 120 meters heads into the southwest U.S.
Tonight: Partly to mostly cloudy. Patchy fog is possible in parts of the area, similar to what happened earlier this morning. Lows will be in the teens and 20s with single digits in a few locations.
Sunday: Mostly cloudy. Areas of fog with some patchy freezing drizzle also possible. Highs will be in the 20s and 30s with lows Sunday night in the teens and 20s with single digits in far northeast Minnesota.
Note: Low pressure over the southwest U.S. this afternoon will head out onto the south central Plains on Sunday, moving into southern Kansas by Sunday evening, this low will then lift northeast toward the Iowa-Missouri border Monday morning, to northern Illinois by Monday evening. This type of storm track will favor a band of heavy snowfall from south central Minnesota to north central Wisconsin, and this is expected to occur from Sunday night through Monday evening.
For the Northland:
Snow will impact portions of northwest Wisconsin with the higher snowfall amounts limited to southern portions of northwest Wisconsin the way it looks now – Most of the snow will fall on Monday, but some lighter snow or freezing drizzle is possible Sunday night.
Winds out of the east to northeast will strengthen Sunday night with wind gusts of 20 to 30 mph developing near Lake Superior, these gusty winds will persist through Monday. There could be some light lake effect snow showers or patchy freezing drizzle near Lake Superior mainly from late Sunday afternoon through Monday, but no more than a dusting of snow is expected the way it looks now as temperatures don’t look cold enough to produce heavier lake effect snow.
Forecast for Duluth and Superior
.Tonight… Partly to mostly cloudy. Patchy fog possible. Low 20 to 25. Wind west at 5 to 15 mph.
.Sunday… Mostly cloudy. Patchy fog or freezing drizzle possible. High 29 to 33. Wind north at 10 to 15 mph.
.Monday… Breezy. Mostly cloudy. Light snow showers, flurries and patchy freezing drizzle possible. High 20 to 25. Wind east to northeast at 15 to 25 mph with higher gusts possible.
Normal temperatures for Sunday
Sunrise Sunday: 7:45 AM CST
Sunset Sunday: 4:56 PM CST