Dune Acres, IN Marine Weather and Tide Forecast

Marine Weather and Tide Forecast for Dune Acres, IN

April 21, 2024 4:10 AM CDT (09:10 UTC) Change Location
Sunrise 5:55 AM   Sunset 7:36 PM
Moonrise 5:36 PM   Moonset 5:01 AM 
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NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.

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Marine Forecasts
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LMZ779 Expires:202404211515;;115073 Fzus63 Kmkx 210736 Glflm
open lake forecast for lake michigan national weather service milwaukee/sullivan wi 236 am cdt Sun apr 21 2024
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 -
relatively light winds are expected today and tonight as high pressure builds across the lake. Breezy south winds will then develop Monday into Tuesday as low pressure of 29.5 inches approaches the northern great lakes from saskatchewan and manitoba. Winds could approach gale force during this time. Winds shift to northerly Tuesday night as the low passes eastward and a cold front moves down the lake. Northerly gales will be possible behind the front.
lmz080-669-671-673-675-777-779-870-872-874-876-878-211515- 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- 236 am cdt Sun apr 21 2024
sheboygan wi to pentwater mi south - .

Today - West winds 10 to 20 kt becoming southwest. Waves 2 to 4 ft.

Tonight - Southwest winds 10 to 15 kt becoming west 5 to 10 kt. Waves 1 to 2 ft.

Monday - Southwest winds 5 to 10 kt becoming south 15 to 25 kt. Waves 1 to 3 ft building to 3 to 5 ft.

Monday night - South winds 15 to 25 kt becoming southwest gales to 35 kt overnight. Chance of showers in the evening, then showers overnight. Waves 4 to 6 ft occasionally to 8 ft building to 7 to 10 ft occasionally to 13 ft.

Tuesday - Southwest gales to 35 kt diminishing to 10 to 20 kt in the afternoon. Chance of showers in the morning, then showers in the afternoon. Waves 7 to 10 ft occasionally to 13 ft subsiding to 4 to 7 ft occasionally to 9 ft.

Tuesday night - Northwest gales to 35 kt becoming north. Chance of rain showers. Waves 6 to 9 ft occasionally to 12 ft building to 8 to 12 ft occasionally to 16 ft.

Wednesday - North winds to 30 kt diminishing to 10 to 20 kt. Waves 8 to 12 ft occasionally to 16 ft subsiding to 6 to 9 ft occasionally to 12 ft.

Thursday - Southeast winds 10 to 15 kt. Waves 1 to 3 ft.

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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Area Forecast Discussion National Weather Service Chicago/Romeoville, IL 200 AM CDT Sun Apr 21 2024


- Freeze for areas west/southwest of Chicago this morning with frost likely elsewhere outside of Chicago.

- Areas of frost likely late tonight away from Chicago.

- Elevated fire danger Monday.

- A period of inclement weather with periods of showers and storms likely towards the end of next week into the weekend.

Issued at 200 AM CDT Sun Apr 21 2024

Through Monday:

Clouds are slowly clearing from northwest to southeast early this morning. Where clouds have cleared across northwest IL, temps have dropped into the upper 20s to around 30 with light winds. The clouds are still expected to clear out across northwest IN by daybreak but the slower this process takes, the less time there will be for temps to drop and frost to form but not planning any changes to the current headlines, which expire at 13Z. Temps will steadily increase through the morning with highs in the upper 50s/around 60 for most locations today, with mostly sunny skies. A lake breeze will move into northwest IN and possible the far southern Cook County shore, keeping temps cooler for those areas.

Clear skies and light winds tonight should allow for a favorable frost potential and maintained areas of frost outside of Chicago. There is some weak warm air advection overnight and much of guidance keeps temps generally in the mid 30s, with the usual cool spots dipping into the lower 30s. Thus, confidence is only medium for how much frost will form tonight. Given the current headlines, opted to hold off on any potential headlines for tonight.

Monday will be warmer with highs back into the mid 60s, perhaps a few locations tagging upper 60s. Southwest winds will increase and gust into the 25-30 mph range, especially northwest of I-57.
Dewpoints may remain in the upper 20s/lower 30s with minimum relative humidity levels in the mid/upper 20 percent range, resulting in an elevated fire danger Monday. cms

Monday Night through Saturday:

An initial wave of primarily warm advection-driven showers will develop on Monday night into Tuesday morning. Instability continues to look pretty limited, so we'll continue to withhold thunder chances from the forecast during this period although can't entirely rule out a lightning strike or two. During the day on Tuesday, while some timing and placement differences remain, it looks like the greatest shower chances towards midday and early- afternoon may shift south and east of us as the main ribbon of low-level warm advection develops into central Illinois and Indiana. Once this period gets in range of more of the extended hires guidance, we may be able to refine and chop PoPs a bit during this time period.

Ahead of the main cold front, which will still be located to our north Tuesday afternoon, temperatures look to surge into the mid and upper 60s--possibly near 70 in spots--in the wake of morning showers and cloud cover. Model guidance is coming into better agreement now depicting a region of rapidly-steepening low-level (0-3 km) lapse rates towards dry adiabatic, particularly north and west of I-55. At the same time, mid and upper-level temperatures will be cooling as the parent upper vort max/trough axis presses into northern Illinois. This combination looks like it will support some degree of destabilization with a few hundred J/kg of SBCAPE materializing as mid-level lapse rates steepen in response to cooling 500 mb temperatures. ELs nearing -20 C will support the chance for some electrification, and continue to advertise isolated thunder wording in the gridded forecast during the afternoon as a result, with the expectation that low-topped convection will materialize ahead of the incoming cold front.
While there's variability regarding EL heights (which will modulate effective bulk shear values), there may be enough shear within the convective cloud layer to support some more organized updrafts and a threat for hail, as well as gusty winds given the deeply-mixed nature of the boundary layer.

A strong cold front will arrive through Tuesday evening, shutting off precipitation chances except for possibly some lingering drizzle near the lake where enhanced convergence and deeper moisture (up through 800 mb) may hang on for a time. Cold advection will push a notably cooler airmass back into the region, with some near-freezing overnight lows possible across interior portions of northern Illinois. This doesn't look like much of a frost threat given the anticipated winds, but something we'll monitor given the threat for some sub-freezing temps.

Wednesday will feature highs which will struggle to make much headway through the 40s near the lake, with low to mid 50s farther inland. The threat for frost will build Wednesday night/Thursday morning as winds ease.

Thereafter, guidance is in general agreement of another active stretch of weather in the vicinity as a series of disturbances pinwheel across the central CONUS towards the end of the week and through next weekend. While significant timing and placement differences remain, a handful of model solutions suggest we'll need to keep a close eye on a threat for severe weather.


Issued at 1208 AM CDT Sun Apr 21 2024

The only aviation weather concerns are:

- Timing the cessation of VFR cigs - Potential lake breeze at GYY this afternoon

VFR cigs will gradually clear all of the Chicago-area terminals tonight with W-NW winds prevailing with intermittent gusts to 15-20 knots developing into the afternoon. A lake breeze looks like it may push through GYY, although confidence remains a bit too low to introduce a NE wind shift at this point. If this were to occur, main timing looks to be around 20z.


IL...Freeze Warning until 8 AM CDT this morning for ILZ003-ILZ004- ILZ005-ILZ008-ILZ010-ILZ011-ILZ012-ILZ019-ILZ020-ILZ021- ILZ032.

Frost Advisory until 8 AM CDT this morning for ILZ006-ILZ013- ILZ023-ILZ033-ILZ039-ILZ103-ILZ105-ILZ106-ILZ107-ILZ108.

IN...Frost Advisory until 8 AM CDT /9 AM EDT/ this morning for INZ001-INZ002-INZ010-INZ011-INZ019.


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesinHgDewPt
BHRI3 - Burns Harbor, IN 16 mi90 min NNW 8G12 40°F 30.18
MCYI3 - Michigan City, IN 18 mi50 min NW 11G12 39°F 30.1722°F
CHII2 - Chicago, IL 20 mi50 min WNW 11G16 41°F 25°F
CMTI2 - 9087044 - Calumet, IL 20 mi70 min W 5.1G8 39°F
CNII2 22 mi40 min WNW 7G11 40°F 21°F
OKSI2 23 mi130 min NNW 4.1G6 41°F
SJOM4 - St. Joseph, MI 41 mi70 min NNW 11G14 41°F 30.16
WHRI2 - Waukegan Harbor, IL 47 mi130 min 0

Wind History for Calumet Harbor, IL
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Airport Reports
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AirportDistAgeWind ktVisSkyWeatherTempDewPtRHinHg
KGYY GARY/CHICAGO INTL,IN 21 sm15 minWNW 0910 smOvercast39°F25°F56%30.18
KMGC MICHIGAN CITY MUNIPHILLIPS FIELD,IN 23 sm15 minno data10 smOvercast37°F25°F60%30.18
Link to 5 minute data for KGYY

Wind History from GYY
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Tide / Current for
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Weather Map
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GEOS Local Image of great lakes   

Chicago, IL,

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