Marine Weather and Tide Forecast for Shorewood-Tower Hills-Harbert, MI

DISCUSSION
Issued at 135 PM EDT Thu Oct 8 2026

Remaining quiet across the Nation's midsection this afternoon with mid-latitude flow focused across the far northern CONUS while a subtropical ridge is noted over Florida and the Carolinas. In the coming week, we'll see a variety of modest temperature swings with increasing chances for rain.

This afternoon, relative humidity values have tumbled toward 35-45% thanks to deep mixing from aloft. A few wind gusts near 20 to 25 mph are sprouting up on surface observations. In light of the recent dry spell, these ingredients amount to a nonzero risk of fire weather conditions.

A weak warm front along with increasing 850-mb flow will be the focus for isolated showers or sprinkles (20-30% chance) on Friday, primarily over the greater South Bend and Michiana area. Cross sections remain rather dry below 8,000 ft while the best low-level forcing is across Illinois. Dry conditions will prevail toward and east of the I-69 corridor. In the wake of the front, far southern areas will once again make a run for 80 degrees.

Our primary rain chance this forecast period continues to be from any remnants of Hurricane Isaias, yet not everyone sees rain. Rain chances are greatest along and east of I-69 with rain amounts generally less then 0.5" Saturday night through Sunday. Overall, no significant impacts expected from Isaias. It will be very warm Saturday (widespread low-80s) as a 582dm ridge builds over the Midwest. Not quite as warm to follow Sunday with clouds and cyclonic northerly flow in play.

A cold front is in the cards for the middle of next week, while the CONUS becomes dominated by a deep, cold trough descending over the northern Plains and a strong subtropical ridge to the southeast.

AVIATION /18Z TAFS THROUGH 18Z FRIDAY/
Issued at 1205 PM EDT Thu Oct 8 2026

High pressure continues to provide tranquil and dry conditions.
Expect VFR ceilings through the TAF period with mostly clear to partly cloudy skies. West winds around 10 kts will become calm late this evening and overnight.

IWX WATCHES/WARNINGS/ADVISORIES
IN...None.
OH...None.
MI...None.
MARINE...None.