Happy meteorological winter! December opens on a snowy note across southern Minnesota.
Our first storm of meteorological winter brings heavy snow to the I-90 corridor. The Twin Cities rides the northern fringe of the significant snow zone.
Here’s NOAA’s NAM 3 km resolution model sequence of events.
This system looks plowable from the Twin Cities south all the way into northern Iowa.
Here are some storm headlines:
- Winter weather advisory for the Twin Cities starting noon Saturday until noon Sunday.
- Winter storm warning up for southern Minnesota.
- Snow will begin in southern Minnesota Saturday morning and push north.
- Snow will push into the Twin Cities Saturday PM, most likely early to mid-afternoon hours.
- Snowfall intensity could pick up quickly Saturday PM, meaning roads will get greasy quickly. Snow should taper off around midday Sunday in the Twin Cities.
- I’m expecting a range of 2” to 5” for the Twin Cities. Heavier south metro, less north metro.
- Southern Minnesota will see widespread 5” to 10” totals.
- Northeast winds will gust to 30+ mph. Travel will be especially difficult Saturday night and Sunday morning.
The Canadian model map below is on the lighter end of snowfall range for the Twin Cities. A shift north increases totals for MSP. A shift south reduces.
NOAA’s GFS has trended way north over the last 48 hours and brings heavier snow into the southern Twin Cities.
Early afternoon start
Snowfall onset timing could still change a couple hours, but this still looks pretty good to me. Falkes will likely fly in the Twin Cities by mid-afternoon.
Here is the approximate time that precipitation is expected to start across the area on Saturday as it moves into the area from the south. Precipitation may start as a wintry mix in some locations, but should quickly transition to snow. #mnwx #wiwx pic.twitter.com/5AhPx9PZm5
— NWS Twin Cities (@NWSTwinCities) November 30, 2018
Snow is here to stay
What falls will stick around for a while. Temperatures drop next week.
It’s December. Let it snow!