Marine Weather and Tide Forecast for Princeton, WI

SHORT TERM
Issued 245 PM CDT Mon Jul 14 2025

Tonight through Tuesday night:

High pressure over the nrn Ohio Valley will slowly move to the lower Great Lakes and Mid Atlantic States into Tue, while a sfc trough and cold front over the nrn Great Plains slowly advances east and south toward the Upper MS River Valley and wrn Great Lakes. Lgt swly winds and warm, moist advection will boost temps and dewpoints during this period. High temps in the mid to upper 80s for Tue-Wed with maximum heat index values in the lower 90s. Lake breezes will occur each day but not penetrate too far inland. Nights will becoming milder and muggy especially Tue nt.

Gehring

LONG TERM
Issued 245 PM CDT Mon Jul 14 2025

Wednesday through Monday:

A shortwave trough will approach from the west for Wed afternoon and evening with a wave of low pressure at the surface. Mid level lapse rates will be rather poor at 5.5-6.0 C/KM, but middle 80s temps and dewpoints around 70F should still yield MLCAPE of 1500 J/KG or more. Deep layer shear of 30-40 kts is forecast while low level shear will be weak. A strong to severe MCS will certainly be possible with damaging winds as the main hazard. There are differences among the models on the passage of the low and cold front so a slower version could result in a few lingering showers or isolated storms on Thu. Otherwise nly winds and cold advection will prevail on Thu with high pressure building into WI and the wrn Great Lakes for late on Thu and into Fri. Pleasant high temps in the 70s will return for this period.

Slight upper ridging will then set up over the nrn USA Rockies for the weekend into early next week yielding wnwly flow aloft from the nrn Great Plains into the Great Lakes. At the sfc a stationary front will mainly set up along the Mid MO River Valley but it could shift farther north and east at times. A few MCS's could occur along and just north of the front during this period which includes 30-40 percent chances each day or night for srn WI.

Gehring

AVIATION
Issued 245 PM CDT Mon Jul 14 2025

VFR conditions this afternoon through Tue. Few-sct035-040 fair wx cumulus over srn WI this afternoon. Areas of fog will be possible in the WI River Valley early Tue AM along the Sauk and Iowa County border. Sct030-040 fair wx cumulus may occur again late Tue AM into the afternoon over srn WI.

Gehring

MARINE
Issued 245 PM CDT Mon Jul 14 2025

Light to modest southerly winds will continue tonight into Tuesday night as high pressure over the northern Ohio Valley slides east to the Mid Atlantic States. A wave of low pressure around 29.8 inches will then move east across central or southern Wisconsin Wednesday afternoon or evening and cross Lake Michigan into lower Michigan Wednesday night. Numerous showers and storms will likely occur with the passage of the low and its cold front.

Modest northerly winds will take hold after the passage of the low and cold front Wednesday night and continue into Thursday and possibly Friday.

Gehring

MKX WATCHES/WARNINGS/ADVISORIES
WI...None.
LM...None.