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LMZ669 Expires:202312102230;;231360 Fzus63 Kmkx 101446 Glflm
open lake forecast for lake michigan national weather service milwaukee/sullivan wi 846 am cst Sun dec 10 2023
for waters beyond five nautical miles of shore on lake michigan.
waves are provided as a range of significant wave heights, which is the average of the highest 1/3 of the wave, along with the average height of the highest 10% of the waves which will occasionally be encountered.
Synopsis..
low pressure of 29.1 inches will move east across quebec today. Northwest winds will weaken later today as the low continues to move away. High pressure of 30.2 inches will move across the lower mississippi valley tonight and Monday bringing lighter northwest to west winds.
southwest winds will then grow gusty Monday night along with building waves ahead of an approaching cold front. Low pressure of 30.2 inches will move north of the lake Monday night and Tuesday. West to northwest winds will remain elevated behind the low into Wednesday morning when high pressure takes hold.
lmz080-669-671-673-675-777-779-870-872-874-876-878-102230- lake michigan from michigan city in to st. Joseph mi 5 nm offshore to mid lake- lake michigan from sheboygan to port washington wi 5 nm offshore to mid lake- lake michigan from port washington to north point light wi 5 nm offshore to mid lake- lake michigan from north point light to wind point wi 5 nm offshore to mid lake- lake michigan from wind point wi to winthrop harbor il 5 nm offshore to mid lake- lake michigan from winthrop harbor to wilmette harbor il 5 nm offshore to mid lake- lake michigan from wilmette harbor il to michigan city in 5 nm offshore to mid lake- lake michigan from whitehall to pentwater mi 5 nm offshore to mid lake- lake michigan from grand haven to whitehall mi 5 nm offshore to mid lake- lake michigan from holland to grand haven mi 5 nm offshore to mid lake- lake michigan from south haven to holland mi 5 nm offshore to mid lake- lake michigan from st. Joseph to south haven mi 5 nm offshore to mid lake- 846 am cst Sun dec 10 2023
sheboygan wi to pentwater mi south...
Rest of today..Northwest winds to 30 kt diminishing to 10 to 20 kt. Isolated rain and snow showers through mid morning, then slight chance of rain this afternoon. Waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to 6 ft occasionally to 8 ft.
Tonight..Northwest winds 10 to 20 kt diminishing to 10 to 15 kt. Waves 3 to 5 ft subsiding to 2 to 4 ft.
Monday..Northwest winds 10 to 15 kt becoming southwest 10 to 20 kt. Waves 1 to 3 ft.
Monday night..Southwest winds to 30 kt. Waves 4 to 7 ft occasionally to 9 ft building to 6 to 9 ft occasionally to 12 ft.
Tuesday..West winds to 30 kt. Waves 7 to 10 ft occasionally to 13 ft.
Tuesday night..Northwest winds to 30 kt. Waves 7 to 10 ft occasionally to 13 ft.
Wednesday..Northwest winds 15 to 25 kt becoming west 10 to 20 kt. Waves 5 to 8 ft occasionally to 10 ft subsiding to 3 to 5 ft.
Thursday..Southwest winds 15 to 25 kt increasing to 30 kt. Waves 4 to 6 ft occasionally to 8 ft.

LMZ600
No data

FXUS63 KMKX 101522 AFDMKX

Area Forecast Discussion National Weather Service Milwaukee/Sullivan WI 922 AM CST Sun Dec 10 2023

KEY MESSAGES
- No major impacts expected through the week.

UPDATE
(Issued 913 AM CST Sun Dec 10 2023)

There are some flurries across southeast Wisconsin. Northwest winds will diminish to around 10 mph today. Overcast skies will likely continue into the evening with clearing tonight.

Marquardt

SHORT TERM
(Issued 406 AM CST Sun Dec 10 2023)

Today through Wednesday:

Light snow, that looked a bit more robust over central WI, has decreased in coverage and intensity this morning as the band has moved closer to the Lake Michigan shoreline. Any remaining snow should dissipate heading toward dawn as favorable DPVA from the shortwave aloft should outpace the eastward advance of convergence from the sfc cold front that is currently working southeast over the area.

Otherwise, today should feature some gusty northwest winds from 25 to 30 mph this morning immediately along and behind the sfc cold front. These winds will remain northwesterly, but gradually ease throughout the day as high pressure works into the area by tonight. Clouds will linger for most of the day, but there may be some late day clearing for areas around Madison and westward.
Highs will be around freezing, but it may feel a bit more brisk when paired with the northwest winds.

High pressure should take hold on Monday with clearing skies and slightly warmer highs expected in the upper 30s. Monday night into Tuesday, a dry cold front should pass, pushing more cold air into the upper Great Lakes Region, with Tuesday and Wednesday remaining dry and sunny, but seasonable with highs right around freezing.

CMiller

LONG TERM
(Issued 328 AM CST Sun Dec 10 2023)

Wednesday through Saturday:

High pressure around 1040 mb will slowly move across srn WI and nrn IL on Wed, then settling over the Ohio River Valley for Thu- Fri. Aloft, a broad upper ridge over the Canadian Rockies and nrn USA Rockies Tue nt will move across the Great Lakes on Thu. An upper trough moving across central Canada will then flatten the ridge as it moves ewd. Temperatures near seasonal normals are expected Wed, but swly winds and warm advection will then prevail into Fri. Thus high temperatures will warm into the 40s for the remainder of the week. A weak shortwave trough, sfc low, and associated cold front may then affect srn WI late Fri into Sat, but there is uncertainty whether these features will be robust enough for precipitation. Slight chances (20%) for light rain and snow are forecast for now.

Gehring

AVIATION
(Issued 913 AM CST Sun Dec 10 2023)

Ceilings around 1400-2000 are expected to linger through the day.
There is some uncertainty when the the clearing line will move through southern Wisconsin, but latest trends are for it to occur later, sometime during the evening or later overnight. Northwest winds will diminish to around 10 knots today.

Marquardt

MARINE
(Issued 315 AM CST Sun Dec 10 2023)

Low pressure near James Bay will move farther northeast with time through today. Currently the low is dragging a cold front across Lake Michigan, causing gusty west to northwest winds from 25 to 30 knots over much of the lake. These gusts should continue through the morning hours, then gradually ease going into the overnight hours as surface high pressure/ridging moves into the upper Great Lakes region by Monday morning.

Light northwesterly winds will then persist into Monday afternoon, then come around to southwesterly following the passage of the surface high/ridge. Southwest winds will then grow gusty Tuesday night ahead of an approaching cold front.

CMiller

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

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