Sunrise 5:59 AM   Sunset 7:42 PM Moonrise 4:39 PM   Moonset 4:48 AM

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LMZ646 Wind Point Wi To Winthrop Harbor Il- 105 Am Cdt Sat Apr 20 2024
Rest of tonight - West wind 15 to 20 knots. Mostly clear. Waves 1 to 2 feet. Saturday - West wind 15 to 20 knots easing to 10 to 15 knots late in the afternoon. Sunny in the morning then becoming partly Sunny. Waves 1 to 2 feet. Saturday night - West wind 10 to 15 knots easing to 5 to 10 knots late in the evening, then rising to 10 to 15 knots after midnight. Partly cloudy. Waves around 1 foot. Sunday - West wind 10 to 15 knots. Sunny. Waves around 1 foot.

LMZ600
No data

FXUS63 KMKX 200236 AFDMKX

Area Forecast Discussion National Weather Service Milwaukee/Sullivan WI 936 PM CDT Fri Apr 19 2024

KEY MESSAGES

- Freeze conditions for early Saturday morning over south central WI with frost and freeze expected for early Sunday morning over all of srn WI. More frost and freeze potential for several early mornings in the middle of next week.

- Dry through the weekend, with precip chances increasing again later Monday.

- Temperatures expected to rise above normal once again late next week.

UPDATE
Issued 936 PM CDT Fri Apr 19 2024

Low level cold advection is underway while a shortwave trough over nrn MN will track to east central WI by 12Z Sat. The main challenge is whether to expand the Freeze Warning farther east but decided against it. Although cold advection is dominant tnt, the sct-bkn cloud cover will continue and possibly keep temps a tad warmer over ern WI. In addition, the duration of at or below freezing temps over ern WI should be very brief if it occurs at all. With cold air aloft the sct-bkn cloud cover will continue on Sat with high temps in the middle to upper 40s.

Gehring

SHORT TERM
Issued 345 PM CDT Fri Apr 19 2024

Tonight through Saturday night:

Heading into the weekend with a running start, temperatures are expected to fall to the low 30s as winds/wind gusts gradually subside. With this, conditions for a freeze early Saturday morning exist across south-central Wisconsin. Going into tomorrow, temperatures will slightly lag behind those of today, and remain around the mid to upper 40s for much of the area.
Winds will remain out of the west, before gradually shifting out of the northwest throughout the day. Going into Saturday night, the threat for frost/freeze conditions exists once more, with temperatures dipping to around freezing once more with calmer westerly winds.

Gertonson

LONG TERM
Issued 345 PM CDT Fri Apr 19 2024

Sunday through Friday:

The start of the extended forecast will be the start of a warming trend that will continue into the beginning of the work week.
Highs on Sunday and Tuesday will be in the upper 50s to low 60s with light winds out of the west/southwest. Abundant sunshine will be present with a 1030mb high pressure swinging through the region allowing for a pleasant couple of days. Later on Monday, a shortwave coming out of the Canadian Prairies will give way to our next chance of precipitation. Clouds will increase Monday evening in approach a developing 1010mb low pressure moving to the SE. Ascent will slowly increase through the overnight period but no precipitation is expected. It won't be until early morning when adequate moisture advection from the south will be able to overcome a dry-layer in the lower-levels. On and off showers will be present through the day across the entire region. Rain chances decrease Tuesday night from west to east following a weak cold front that moves past the area. Total rainfall totals will be in the 0.1-0.4" range by the time it's all said and done.
Temperatures on Wednesday will be stuck in the lower 50s away from the lake and in the upper 40s closer to the lake with winds out of the N/NE. To close out the week, winds will shift more southeasterly/southerly from a developing trough across the Central Plains. This will in turn allow for a rebound in temperatures to above normal values for late April.

KP

AVIATION
Issued 936 PM CDT Fri Apr 19 2024

Sct-bkn060-070 tnt followed by sct-bkn040-050 for Saturday, then becoming mostly clear Sat nt.

Gehring

MARINE
Issued 345 PM CDT Fri Apr 19 2024

A high pressure of 30.3 over the central US and low pressure of 29.6 over western Ontario will keep winds blustery out of the west/northwest. Winds will calm overnight with the ridge's progression into the area by late Saturday, before ramping back up out of the southwest moving into the next week with an approaching low to the northwest. By mid-week, winds will shift out of the north on the back end of the retreating low pressure, and speed up in conjunction with a surface high over the northern Great Lakes.

Gertonson

MKX WATCHES/WARNINGS/ADVISORIES
WI
Freeze Warning
WIZ046-WIZ047-WIZ056-WIZ057-WIZ062-WIZ063- WIZ067-WIZ068...midnight Saturday to 8 AM Saturday.

LM
Small Craft Advisory
LMZ643-LMZ644-LMZ645-LMZ646 until 10 PM Friday.

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