Marine Weather and Tide Forecast for Wyoming, MN

DISCUSSION
Issued at 310 PM CDT Mon Jun 8 2026

Broad warm air advection today will continue provide for a similar environment to what we have seen over the past 24 hours as warm, moist air moves in Little shear is present and this has been an inhibiting factor in organized convection. We have and will continue to see precipitable water values in the 99th percentile. This air mass will present through the middle of the week. The large scale pattern seems fairly well established for this forecast with roughly distinct two parts of the week. The mid point will be Wednesday's severe storm chances. Before this warm and humid with daily thunderstorm chances. After this cooler, near to below normal temperatures are expected with much lower storm chances owing to the decrease in heat therefore instability.

Rest of Today through Wednesday... A building trough over the western CONUS will move into the Upper Midwest by the middle of the week. Ahead of this trough today we will see, as mentioned above, more of the same showers and non-severe thunderstorms with heavy rain as the main risk owing to our well above normal precipitable water values. Looking ahead to tomorrow, attention will be mainly well to our west near the cold front. It is here where CI will occur and these storms will grow upscale as they move across mainly ND, but also northern SD. With the upscale growth the main risk on Tuesday would be for strong winds. Over the Dakotas there is a significant risk, but for us it is much less certain. If a MCS can develop a strong cold pool the MCS will persist into Minnesota with strong winds throughout. The other concern is how far south will this line get? North Dakota is where is looks most likely with some ensemble members going into South Dakota. It will be dependent on the southern extent of this line to see if central Minnesota see impacts from this possible MCS. The same boundary from Tuesday will be over us on Wednesday and should fire up another round of convection somewhere between eastern Minnesota and western Wisconsin. How strong these initial storms could be will depend on how Tuesday plays out. If we see a large MCS move across Minnesota it will decrease severe chances on Wednesday with less "fuel" available for the next round of storms. If the MCS either doesn't come together or doesn't make it into much if any of Minnesota we will have a much better chance for severe storms on Wednesday.
For this second round we could see supercells and all modes of severe (wind, hail, and tornado) would be in play. The other story of this period beyond the storm chances will be heat. This is tied directly into the convective forecast as the more rain, clouds, and convection in general we see the more we will trend to the cooler side of the forecast. At the moment much of the global ensemble guidance still puts both days with temperatures in the low to mid 90s. There are a few outliers staying in the 80s tied to that more widespread rain solution.

Thursday into the Weekend... Behind the frontal passage colder and drier air will arrive on Thursday. The upper wave will be overhead on Thursday so still some rain chances, but less than the severe risks of Tuesday and Wednesday. Cooler air will continue to advect in through the weekend with highs generally in the lower to mid 70s, which is actually below normal now as normals are pushing into the upper 70s by this point in June.
After a busy early and mid week, the late week looks to be a nice break from more active weather.

AVIATION /06Z TAFS THROUGH 12Z WEDNESDAY/
Issued at 1216 AM CDT Tue Jun 9 2026

Most sites start with VFR conditions with the exception of W WI sites where fog has begun to develop. Winds will drop to light and variable overnight. Classic set up for fog development as light winds and ample low level moisture under the inversion should allow for fog formation, particularly in eastern MN thru western WI through daybreak. I have maintained the TEMPO groups and adjusted the prevailing for these sites. Current thoughts are for MVFR range with IFR or worse possible, most likely at RNH/EAU. Conditions will improve to VFR after daybreak and remain there through the end of the TAF period. Precipitation chances begin to increase for our western MN sites as convection appears likely after Tuesday night. Winds will generally be under 10kts with gusts into the low 20s. Winds should shift to the southeast and stay there through the evening hours.

KMSP... Maintained a TEMPO group for possible fog toward daybreak this morning. Conditions should improve quickly by mid morning with VFR likely through the remainder of the TAF.
Current thoughts on TS potential Wednesday morning. Hires guidance favors a line of thunderstorms approaching the terminal around daybreak Wednesday morning, but opted to leave it out until confidence increases. Guidance continues to vary on timing, coverage, and magnitude.

/OUTLOOK FOR KMSP/ WED...Early AM IFR/-TSRA likely. Chance Afternoon IFR/+TSRA Wind S 15-20G30 kts.
THU...VFR. Chance PM -TSRA. Wind W 10-15G25 kts.
FRI...VFR. Wind W 15G30kt.

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