Marine Weather and Tide Forecast for Dennison, MN

DISCUSSION
Issued at 1113 AM CDT Mon Mar 16 2026

Today and tonight, early afternoon satellite imagery with surface obs showed clearing skies across the region and a bright fresh snowpack from across the entire upper Midwest. A surface high pressure was located across the Dakotas, with a low pressure over the Great Lakes, resulting in northwest winds of 15 to 25 mph. As we head towards evening, high pressure will build in and winds will diminish. This will set the stage for cold temperatures across the region, with overnight lows falling below zero. Winds will be light, so wind chills will not be much cooler than the ambient air temperature.

Tuesday, confidence remains high in a quick moving band of snow to slide southeast across the region Tuesday afternoon through Tuesday evening. Moisture will be limited, so expect snowfall rates around a quarter to a half inch per hour for several hours. The end result will be widespread totals around 2 inches of snow. Some locations will pick up 3, with a maximum of about 4 inches. Winds will be south/southeast around 15 to 25 mph as the snow falls, so could have some drifting snow as well. The snow will end Tuesday night.

Wednesday through Monday, lingering impacts from snow-covered roads will lead to slow travel Wednesday morning. However, temperatures will warm to near 40, which will lead to a quick recovery on roads. Looking ahead, the main story is this warming trend continuing into the weekend. As mentioned in the previous forecast, warm air will spread across the region, which should lead to highs in the lower 50s by Saturday. There is a small chance (10 to 20 percent) for a rain/snow mix as a weak system passes through on Sunday.

AVIATION /18Z TAFS THROUGH 18Z TUESDAY/
Issued at 1230 PM CDT Mon Mar 16 2026

Northwesterly winds remain elevated with gusts of 20-30kts behind the departing winter storm system that is now centered over the Great Lakes. Skies west of the MN/WI line are generally clear, with just a few areas of Cu around 3-4k feet. East of the state border, a widespread cloud deck remains visible on satellite. Will keep the chance of a high MVFR cig in the forecast at RNH/EAU this afternoon, but should see improvements to VFR over time. Winds diminish this evening and then turn southerly after daybreak Tuesday. A round of light snow is forecast to produce MVFR (chc IFR) visibility and 1-3" of accumulation at all terminals Tuesday afternoon and evening.
This will be addressed in the 00z TAF package.

KMSP...Northwesterly winds diminish after sunset. Winds will turn southerly by midday Tuesday, ahead of an incoming round of light snow. Have introduced 6SM -SN starting at 21z Tuesday.
It's likely that we'll need to introduce much more degraded visibility beyond 00z in upcoming TAFs. Latest forecast calls for 1-3" of snow at MSP Tuesday evening.

/OUTLOOK FOR KMSP/ WED...VFR. Wind SW 5kts.
THU...VFR. Wind NW to SW 5kts.
FRI...VFR. Wind SW to NW 5-10kts.

MPX WATCHES/WARNINGS/ADVISORIES
MN...None.
WI...None.