Highland Park, IL Marine Weather and Tide Forecast

Marine Weather and Tide Forecast for Highland Park, IL

April 14, 2024 9:22 PM CDT (02:22 UTC) Change Location
Sunrise 6:09 AM   Sunset 7:33 PM
Moonrise 10:15 AM   Moonset 1:49 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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LMZ740 Winthrop Harbor To Wilmette Harbor Il- Wilmette Harbor To Northerly Island Il- Northerly Island To Calumet Harbor Il- 734 Pm Cdt Sun Apr 14 2024

Tonight - South winds 10 to 15 kt becoming north 10 to 20 kt late this evening. Clear. Waves 1 to 3 ft.

Monday - Northeast winds 5 to 10 kt becoming east in the afternoon. Sunny. Waves 1 to 2 ft.

Monday night - Northeast winds 10 to 20 kt becoming east. Mostly clear in the evening, then becoming mostly cloudy. Waves 1 to 3 ft.

Tuesday - East winds 15 to 25 kt. Numerous showers in the morning, then showers and scattered Thunderstorms in the afternoon. Waves 3 to 5 ft building to 4 to 6 ft occasionally to 8 ft. A small craft advisory will likely be needed.

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7 Day Forecast for Marine Location Near Highland Park, IL
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Area Discussion for - Chicago, IL
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Area Forecast Discussion National Weather Service Chicago/Romeoville, IL 619 PM CDT Sun Apr 14 2024


- Waves of showers and scattered storms develop early Tuesday through Wednesday. Some may be severe Tuesday evening into Wednesday.

- Windy late Tuesday through Wednesday with peak gusts 40+ mph, highest on Wednesday.

Issued at 328 PM CDT Sun Apr 14 2024

Through Monday Night:

On what has been our warmest day of the year thus far (with both Chicago and Rockford officially logging their first 80 degree readings of this calendar year), a lake breeze/lake-enhanced cold front is now marching inland from Lake Michigan. The more notable temperature falloff is lagging behind this boundary a bit, but through the remainder of this afternoon into this evening, expect temperatures to drop into the 60s and eventually the 50s behind the boundary as it steadily continues to press inland. Light winds at the surface induced by nearby high pressure and skies remaining clear to mostly clear will also contribute to the nocturnal cooling efforts tonight, resulting in nighttime lows that should range from the mid 40s to the low 50s across the area.

With high pressure still in the region come tomorrow, it should be another uneventful day weather-wise here. High temperatures look to be a few degrees cooler than today's highs, but abundant sunshine and relatively low dew points will once again favor temperatures reaching the upper echelon of what forecast guidance is offering up, which would be widespread mid 70s to near 80 degree readings away from Lake Michigan. Closer to the lake, light onshore flow and eventually likely a true lake breeze should keep temperatures below 70 degrees, and possibly even below 60 degrees, along the immediate lakeshore.

Overnight, high-level cloud cover should start to spread over the area in increasing quantity while warm air advection will start to ramp up in advance of a deepening low pressure system over the central Plains. It is possible that a leading band of showers and storms reaches our southwestern CWA just before the night is over as richer theta-e air begins to push into the area, but most locations currently look like they will remain dry through daybreak. More information on this incoming system and the showers and storms that it will bring can be found below.


Tuesday through Sunday:

Confidence remains high in the potential for waves of showers and scattered thunderstorms developing early Tuesday and persisting into Wednesday across the area as an occluding surface low moves across the region. Additionally, there remains a signal for severe weather though with a trend toward later timing, now favoring Thursday evening/night into early Wednesday.

To start, early Tuesday the expectation is that elevated showers and embedded non-severe thunderstorms will steadily overspread the area during the day on Tuesday as warm advection lifts into the area in response to the strengthening surface low to our west. Surface winds will also steadily increase in response to the approaching system and resultant tightening pressure gradient, with gusts in the 30-40 mph range out of the east and southeast expected on Tuesday. The resultant lake cooled air will hold down temperatures across northeast Illinois with afternoon highs only in the mid 50s to lower 60s. The associated surface warm front will be slow to lift into the area with temperatures warming into the 70s south of the boundary, currently favoring locales south of I-80.

The slowed eastward progress of the surface low continues to support a later trend for our strong to severe storm potential with the best conditions for severe weather setting up across northern Missouri and southern Iowa during the afternoon. With even marginal to modest instability (MUCAPE of 500-1000 J/kg)
the clockwise curved low-level hodographs and strong dynamics in place (0-6km Bulk shear 50-60kts), severe storms to our west could very well continue east into the overnight hours across northern Illinois and into northwest Indiana. The degree of destabilization will likely factor into the coverage and upper bounds of the severe threat. Nevertheless all hazards will be in play (damaging winds, hail, and tornadoes).

As the upper low merges into the upper trough it takes on more of a negative tilt early Wednesday morning with the region still situated under the left exit of the southern stream upper jet.
While there are some questions as to how much instability there will be to work with into early Wednesday morning and the timing of the various waves as showers and storms wrap around the surface low. With the slightly slower timing, forecast soundings would support surface based convection persisting (or redeveloping)
Wednesday morning into early afternoon, especially east into northwest Indiana. Will hopefully get a better idea of how late the severe threat persists as high-res guidance becomes available. Winds turn westerly on Wednesday with the strong winds persisting and likely peaking during the afternoon on Wednesday with gusts up to 40+ mph possible.

Beyond Wednesday can't rule out some rain on the north side of a weakening surface late Thursday into Friday then before surface high pressure builds southeast into the Upper Midwest bringing a cooler airmass for the latter half of the week with high temperatures in the 50s to lower 60s and lows in the 30s and lower 40s.


Issued at 608 PM CDT Sun Apr 14 2024

No significant aviation weather concerns this TAF period.

Cold front which moved through the terminals earlier today continues to push south across central IL/IN early this evening, while an area of high pressure over the eastern Dakotas drifts southeast toward the region. The southern periphery of this surface high pressure ridge will shift across the terminals Monday morning and midday, maintaining quiet, VFR aviation weather across the area through Monday evening.

Wind wise, the lake breeze off of Lake Michigan had pushed through KORD/KMDW/KGYY earlier this afternoon, and was just moving through KDPA as of 2315Z/615 pm. Modest easterly winds will shift slightly southeast this evening at the Chicago metro sites, before becoming light and variable - though with a general trend toward NNE overnight into Monday morning. Wind directions may flop around a little from NNW to NNE during this time, but should become decidedly light northeast during the day Monday. Chicago terminals will then see a bit more of an easterly trend mid-late afternoon as a lake breeze develops once again. Easterly flow will persist beyond the current TAF period.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesinHgDewPt
WHRI2 - Waukegan Harbor, IL 13 mi82 min NNE 1.9
OKSI2 21 mi142 min E 1G2.9 70°F
CHII2 - Chicago, IL 22 mi32 min S 11G12 63°F 46°F
CNII2 25 mi22 min S 4.1G4.1 60°F 39°F
KNSW3 - Kenosha, WI 28 mi82 min 0G1 52°F 29.77
CMTI2 - 9087044 - Calumet, IL 34 mi52 min SSE 1.9G2.9 60°F 29.7445°F

Wind History for Calumet Harbor, IL
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Airport Reports
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AirportDistAgeWind ktVisSkyWeatherTempDewPtRHinHg
KPWK CHICAGO EXECUTIVE,IL 7 sm30 minE 0310 smClear64°F43°F45%29.78
KORD CHICAGO O'HARE INTL,IL 15 sm31 minSSE 0310 smClear66°F39°F37%29.76
KUGN WAUKEGAN NATIONAL,IL 17 sm31 minNE 0310 smClear52°F45°F76%29.77
Link to 5 minute data for KPWK

Wind History from PWK
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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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