Marine Weather and Tide Forecast for Algoma, WI

DISCUSSION
Issued at 102 PM CST Wed Feb 11 2026

Ridging over the upper-Midwest will bring low impact weather to the region through this weekend. Most noteworthy impact is a 15-20% chance for fog to develop across northern WI tonight, however, with drier air arriving with the high pressure any fog that does develop should remain patchy. Additional periods of fog will be possible this weekend as warmer air moves over the melting snowpack.
Otherwise, chances for precip this weekend have trended downward over the last 24 hours with ensembles coming into better agreement in a more southerly track for a low across the southern CONUS.

Expect a more active pattern to develop early next week as troughing moves over the central CONUS. Ensemble and deterministic guidance are in generally agreement that a seasonally warm moist (PWATS up to 0.8") air mass will move over the region. This may lead to a more impactful precipitation event Tuesday into Wednesday. However, there is still a large degree of uncertainty with vertical temperature profiles. This makes determining a dominate p-type difficult for this period.

Temperatures will begin to trend warmer than normal Thursday with a 50-80% chance of highs above 40 degrees as soon as Friday and a 50- 90% chance by Sunday. There is a 30-50% chance that areas south of HWY 29 reach 50 degrees by early next week. The warming trend will lead to a quickly melting snowpack and deteriorating ice conditions, which does raise the concern for ice jams next week.

AVIATION
for 00Z TAF Issuance Issued at 519 PM CST Wed Feb 11 2026

Stratocumulus clouds were exiting far northeast WI early this evening, as mid/high level clouds approached central WI.
Otherwise, clear skies and light NW winds were reported across the forecast area.

High pressure will cover the area tonight, leading to potential for patchy fog development over the favored areas of north central WI late tonight into early Thursday morning. Have added a TEMPO group for IFR fog at RHI between 09z-13z, but left any mention of fog out of the remaining TAF sites. Aside from SCT-BKN mid/high clouds (mainly over the southwest part of the forecast area), there is potential for scattered stratocumulus clouds late in the afternoon. Light and variable winds will become southerly Thursday afternoon.

GRB WATCHES/WARNINGS/ADVISORIES
None.