Sunrise 5:23 AM   Sunset 8:11 PM Moonrise 2:26 PM   Moonset 2:51 AM

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LMZ645 North Point Light To Wind Point Wi- 105 Pm Cdt Fri May 17 2024
.dense fog advisory in effect until 4 pm cdt this afternoon - .
Rest of today - Northeast wind 5 to 10 knots veering east late in the afternoon. Mostly Sunny. Waves around 1 foot. Tonight - East wind 5 to 10 knots becoming southeast late in the evening, then veering south after midnight. Patchy fog through the night. Waves around 1 foot. Saturday - Southeast wind 5 to 10 knots rising to 10 to 15 knots in the afternoon. Patchy fog in the morning. Waves around 1 foot.Saturday night - South wind 10 to 15 knots becoming southwest 5 to 10 knots after midnight, then veering west early in the morning. Partly cloudy. Waves around 1 foot.

LMZ600
No data

FXUS63 KMKX 171524 AFDMKX

Area Forecast Discussion National Weather Service Milwaukee/Sullivan WI 1024 AM CDT Fri May 17 2024

KEY MESSAGES

- Marine dense fog may linger through tonight.

- Warmer and more humid today through Sunday.

- Wet and a chance of thunderstorms Monday and Tuesday.



UPDATE
Issued 1016 AM CDT Fri May 17 2024

Light winds and scattered clouds today as high pressure moves across Lake Michigan. Highs will be around 75 to 80 inland of Lake Michigan.

Marquardt

SHORT TERM
Issued 413 AM CDT Fri May 17 2024

Today through Saturday:

High pressure settled in overnight. Southwest winds descending toward the lakeshore in far southeast WI helped temps remain elevated overnight when compared to other areas of south central and southeast WI. With dewpoints in the lower to mid 50s and temps dropping to those values, along with clear skies and calm winds, patchy fog is developing. Most susceptible areas for dense fog are river valleys, marshy areas, and east central WI.
The Fox River Valley is fogged in and the fog is expanding southward into Sheboygan and Fond du Lac Counties between I-45 and I-43. We will continue to monitor satellite and obs trends and issue a Dense Fog Advisory for additional counties as necessary. With an early sunrise, the dense fog threat would only last until around 8 AM.

High pressure, plenty of sunshine, and light winds will allow for a lake breeze to develop early today, but the light flow should prevent it from making it too far inland until dusk. The dry air in place should also allow for dewpoints to drop toward the lower end of guidance, in the upper 40s for inland areas.
This, and also subtle warm air advection tonight, will make it difficult for fog development tonight. Lakeshore areas would still be a little susceptible.

Saturday will be our warmest day of the weekend with highs in the lower-mid 80s inland. A modest southerly breeze for inland areas will still allow that lake breeze to develop, but will not allow for progress inland. Lakeshore highs will be in the 70s.

Cronce

LONG TERM
Issued 413 AM CDT Fri May 17 2024

Saturday night through Thursday:

A weak trough will cross southern WI Saturday night. Showers and a few rumbles of thunder are possible along that trough in western WI Sat afternoon, but precip chances should dwindle with loss of daytime heating. In addition, the main source of the forcing is from a closed upper low over Manitoba. Sunday looks dry and warm, but not quite as warm as Saturday.

The upper level pattern will transition into a western trough- eastern ridge early next week, and then become more zonal as the week goes on. This puts southern WI in the unsettled, active weather zone. Showers and thunderstorms are possible Monday morning as one shortwave moves through, and timing/daytime heating will drive how widespread those storms become. The next shortwave will arrive Tuesday and the associated surface low is expected to be stronger, crossing WI Tuesday afternoon/evening.
There would be a greater potential for stronger storms with this Tuesday system.

The wave train should continue through the latter half of the week and bring additional shower and thunderstorm chances to southern WI. Temps for much of the week should be in the lower 70s inland and mid/upper 60s lake counties.

Cronce

AVIATION
Issued 1016 AM CDT Fri May 17 2024

VFR conditions are expected through the evening. Expect scattered clouds around 3000 ft. There is a chance for some fog tonight, but confidence is low. South winds tonight around 5 knots may limit fog development.

Marquardt

MARINE
Issued 1016 AM CDT Fri May 17 2024

A Marine Dense Fog Advisory is in effect. Satellite imagery shows the fog mainly in the far northern and southern half of the lake. It may redevelop or expand across the remainder of the lake. The conditions will remain favorable through tonight due to high pressure and warmer air flowing over the cooler lake water, but there is uncertainty in the timing/area of how long the dense fog will stick around.

No wind/gale concerns through Monday.

Marquardt

MKX WATCHES/WARNINGS/ADVISORIES
WI...None.
LM
Dense Fog Advisory
LMZ080-LMZ261-LMZ362-LMZ364-LMZ366-LMZ563- LMZ565-LMZ567-LMZ669-LMZ671-LMZ673-LMZ675-LMZ777-LMZ779- LMZ868-LMZ870-LMZ872-LMZ874-LMZ876-LMZ878 until 4 AM Saturday.

Dense Fog Advisory...LMZ644-LMZ645-LMZ646 until 4 PM Friday.

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