Dune Acres, IN Marine Weather and Tide Forecast
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Marine Weather and Tide Forecast for Dune Acres, IN


December 9, 2023 8:31 AM CST (14:31 UTC)
Sunrise 7:01AM   Sunset 4:18PM   Moonrise  4:29AM   Moonset 3:00PM 

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Marine Forecasts
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LMZ779 Expires:202312091645;;158688 Fzus63 Kmkx 090920 Glflm
open lake forecast for lake michigan national weather service milwaukee/sullivan wi 320 am cst Sat dec 9 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..
southeast winds will quickly come around to southwest through the rest of the morning hours and become gusty as a surface low rapidly deepens to 29.4 inches as it races from the southern end of lake michigan this morning, to just south of james bay by this evening. The rapid strengthening of the low will drive gales from 35 to 40 knots, primarily over the eastern parts of lake michigan closer to the shoreline of the state of michigan. These gales will race northward through the day from the southeastern to northeastern quadrants of lake michigan. Thus, a gale warning has been issued over the southern half and northern half of lake michigan in two separate time segments to capture this evolution.
breezy southwest winds to 20 knots will then continue in the wake of the low, until a cold front passes Sunday morning and winds rise slightly and shift direction, with gusts between 20 to 25 knots out of the northwest expected.

lmz080-669-671-673-675-777-779-870-872-874-876-878-091645- 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- 320 am cst Sat dec 9 2023
sheboygan wi to pentwater mi south...
.gale warning in effect from 6 am this morning to noon cst today...
Today..South gales to 35 kt becoming west gales to 40 kt late this morning, then becoming southwest to 30 kt early this afternoon diminishing to 15 to 25 kt late. Chance of rain this morning, then slight chance of sprinkles this afternoon. Waves 6 to 9 ft occasionally to 12 ft subsiding to 4 to 7 ft occasionally to 9 ft.
Tonight..Southwest winds 15 to 25 kt becoming west. Slight chance of sprinkles in the evening, then slight chance of rain overnight. Waves 5 to 8 ft occasionally to 10 ft.
Sunday..Northwest winds to 30 kt diminishing to 15 to 25 kt. Chance of rain in the morning. Waves 6 to 9 ft occasionally to 12 ft.
Sunday night..Northwest winds 10 to 20 kt. Waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to 5 ft.
Monday..West winds 10 to 20 kt becoming southwest. Waves 3 to 5 ft.
Monday night..Southwest winds to 30 kt. Waves 5 to 8 ft occasionally to 10 ft building to 7 to 10 ft occasionally to 13 ft.
Tuesday..West winds to 30 kt. Waves 7 to 10 ft occasionally to 13 ft subsiding to 5 to 8 ft occasionally to 10 ft.
Wednesday..West winds 10 to 20 kt becoming southwest 15 to 25 kt. Waves 3 to 5 ft.

LMZ700
No data


7 Day Forecast for Marine Location Near Dune Acres, IN
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Area Discussion for - Chicago, IL
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FXUS63 KLOT 091206 AFDLOT

Area Forecast Discussion National Weather Service Chicago/Romeoville, IL 606 AM CST Sat Dec 9 2023

SHORT TERM
Issued at 250 AM CST Sat Dec 9 2023

Through tonight...

Key Messages:

* Showers gradually ending after daybreak this morning.

* Gusty SW winds (potentially up to 40 mph) develop ahead of cold front early this morning (mainly E of I-55).

* Spotty showers/flurries possible (15% chance) late this afternoon into the early evening.

A band of showers is currently progressing northeast across the area early this morning. A few embedded lightning strikes had been observed along the leading edge but have since dissipated.
Showers will continue to lift northeast through daybreak with any lightning remaining mainly south of the the area across portions of central Illinois. A trailing axis of rain behind the front extending from northwest Missouri into central Wisconsin will be slower to lift northeast, likely resulting in precipitation lingering into the daylight hours, especially across far northern Illinois.

Winds remain gusty ahead of the line of showers early this morning but observations have yet to reach 35 mph. The potential remains for gusts to gradually increase up to 40 mph out of the southwest in advance of the surface cold front over the next few hours as it progresses across the area in response to slight pressure falls. Winds then turn westerly behind the front after daybreak, remaining gusty through the day across the area around 20-30 mph.

Only change to the short term forecast was to introduce slight chances (20%) for spotty showers late this afternoon and evening when cloud depths becomes deep enough to support precipitation coincident with a mid-level vort max pivoting overhead as it rounds the upper low. Cloud temperatures may become just cold enough to squeeze out a few flurries as well early in the evening (6-8pm).

Temperatures remain fairly steady through the daylight hours as weak cold advection matches the diurnal warming of the day.
Temperatures then steadily decrease after sunset with overnight lows in the upper 20s to lower 30s.

Petr

LONG TERM
Issued at 245 AM CST Sat Dec 9 2023

Sunday through Friday...

Key Messages:

* Turning cooler though still seasonable the first half of next week then moderating midweek.

* Mainly dry conditions are forecast for much of next week.

Amplified upper troughing will be translating across the area on Sunday as the associated surface low races northeast across eastern Canada. Another trailing vort max will bring the potential for a few flurries and spotty snow showers during the day on Sunday (currently 10% chance) with lake effect rain/snow showers grazing northern Porter County. This may need to be added to the official forecast with later updates if confidence in more widespread snow showers/flurries increases.

Cooler (albeit seasonable) and dry weather then prevails through the majority of the week as high pressure sets up over the region and upper troughing remains northeast of the region. Temperatures begin to moderate mid-late week with highs in the 40s as mid- level ridging expands overhead. Precipitation chances (30%) return later in the week heading into the weekend as a Central Plains closed upper low approaches the region.

Petr

AVIATION
For the 12Z TAFs...

* Rain should be tapering off shortly after sunrise, or by mid- morning at the latest.

* South winds switch to west after 13Z and remain gusty through early Sunday morning.

A cold front which brought rainfall to the area overnight will push through the region early this morning, bringing an end to the showers and turning winds westerly through the remainder of the forecast period. Gusts into the mid to upper 20s appear likely, but so far the upstream observations have not been showing much above that. IFR ceilings should yield to MVFR for most of the period, but with a broad area of VFR presently observed behind the front, elected to carry several hours of better conditions despite the concern that some of the lower level cloudiness will start filling back in.

Lenning

LOT WATCHES/WARNINGS/ADVISORIES
IL...None.
IN...None.
LM
Small Craft Advisory
Winthrop Harbor IL to Gary IN until 10 PM Saturday.

Small Craft Advisory...Gary to Michigan City IN until 4 AM Monday.


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesinHgDewPt
BHRI3 - Burns Harbor, IN 16 mi52 min SSW 13G15 57°F 29.63
MCYI3 - Michigan City, IN 18 mi32 min S 19G24 58°F 29.6053°F
CHII2 - Chicago, IL 20 mi32 min W 27G34 51°F 50°F
CMTI2 - 9087044 - Calumet, IL 20 mi44 min WSW 8G20
CNII2 22 mi17 min WSW 16G23 49°F 43°F
OKSI2 23 mi92 min WNW 2.9G7 51°F
SJOM4 - St. Joseph, MI 41 mi32 min SSW 8.9G16 56°F 29.65
WHRI2 - Waukegan Harbor, IL 47 mi92 min SW 7G9.9

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Wind History for Calumet Harbor, IL
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Airport Reports
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AirportDistAgeWind ktVisSkyWeatherTempDewPtRHinHg
KGYY GARY/CHICAGO INTL,IN 21 sm46 minWSW 1010 smMostly Cloudy57°F57°F100%29.65
KMGC MICHIGAN CITY MUNIPHILLIPS FIELD,IN 23 sm16 minSSW 20G2610 smOvercast55°F52°F88%29.66

Wind History from GYY
(wind in knots)



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Chicago, IL,



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