Monday, June21, 2021
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Marine Weather and Tides
Lake Bluff, IL

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 5:13AMSunset 8:33PM Monday June 21, 2021 1:52 AM CDT (06:52 UTC) Moonrise 5:08PMMoonset 2:44AM Illumination 86% Phase: Waxing Gibbous; Moon at 11 days in cycle
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.
Marine Forecasts
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LMZ740 Winthrop Harbor To Wilmette Harbor- Wilmette Harbor To Northerly Island- Northerly Island To Calumet Harbor- 127 Am Cdt Mon Jun 21 2021
.small craft advisory in effect through this afternoon...
Rest of tonight..Southwest 15 to 20 kt becoming northwest and increasing to 30 kt toward morning. Cloudy. Waves 1 to 3 ft building to 3 to 5 ft toward morning. Winds and waves higher in and near Thunderstorms.
Monday..Northwest winds to 30 kt in the morning, easing to 15 to 20 kt and becoming north in the afternoon. Partly Sunny. Waves 3 to 5 ft subsiding to 2 to 4 ft in the afternoon.
Monday night..North winds 10 to 20 kt. Partly cloudy. Waves 2 to 4 ft.
Tuesday..West winds 5 to 10 kt becoming southwest 10 to 15 kt in the afternoon. Sunny. Waves 1 to 3 ft subsiding to 1 ft or less in the afternoon.
LMZ740 Expires:202106210915;;606196 FZUS53 KLOT 210627 NSHLOT NEARSHORE MARINE FORECAST National Weather Service Chicago/Romeoville IL 127 AM CDT Mon Jun 21 2021 For waters within 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 waves, along with the average height of the highest 10 percent of the waves which will occasionally be encountered. LMZ740>742-210915-


7 Day Forecast for Marine Location Near Lake Bluff, IL
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location: 42.28, -87.83     debug


Area Discussion for - Chicago, IL
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FXUS63 KLOT 210555 AFDLOT

Area Forecast Discussion National Weather Service Chicago/Romeoville, IL 1255 AM CDT Mon Jun 21 2021

SHORT TERM. 344 PM CDT

Through Monday night .

Convection from this evening's expected activity should be clear of the area by morning with the passage of the frontal zone, but additional daytime showers could develop as the strong upper vort lobe swings through during the period of peak afternoon heating. Low levels will be well mixed and unstable given the breezy northwest winds, but any convection that manages to develop should be relatively shallow given a projected warm nose around the 700mb level. Thus thunderstorms appear to be less likely relative to isolated showers. In addition, with the cooler and drier airmass, afternoon heat indices should be 10 to 20 degrees below today's values. Actual highs will only reach the upper 60s to lower 70s.

Lenning

LONG TERM. 344 PM CDT

Tuesday through Sunday .

Northwest and westerly low level flow around a surface ridge passing to our south will support cooler and drier conditions continuing into Tuesday. A warmer and more humid airmass then returns for Wednesday as the ridge moves into the Ohio Valley and winds turn more southerly again. Weak disturbances in mid and upper level flow may support a small chance of precip Tuesday night into early Wednesday for northern portions of the area. By Thursday afternoon and especially into Friday, models are showing a more pronounced upper disturbance with a corresponding surface low and frontal zone. The peak period for associated shower and thunderstorm activity appears to be late Thursday through Friday . with the weekend showing typical summertime heat with slight chances of storms. The timing of these features through the area could of course change, which would also influence the weekend outlook.

Lenning

AVIATION. For the 06Z TAFs .

Aviation Forecast Concerns:

* Thunderstorms exiting the Chicago metro to the southeast at this time. Brief VCTS mention at MDW/GYY next hour or so.

* Wind shift to northwest during the pre-dawn hours with increasing winds and gusts 25+ kts. Winds remain breezy but gradually diminish. Likely turn northeast along the Lake Michigan shore and the Chicago metro terminals Monday afternoon.

* Period of MVFR ceilings behind cold front into Monday morning. Improving to VFR Monday afternoon.

Trailing edge of thunderstorm squall-line was roughly from KGYY southwest to KJOT and KPIA at 0530Z. Thunder lingering at KGYY will move out within the next hour or so. Farther northwest, a surface cold front was trailing across southwest WI and eastern IA from low pressure over northeast WI. Winds will shift westerly just ahead of the front 07-08Z, then northwest as the front itself moves through the terminals 09-11Z. Gusts in excess of 25 kts are possible for a time into early Monday morning, before slowly easing and eventually veering more northerly during the day. Winds will likely turn 010-020 degrees across the Chicago metro sites Monday afternoon.

Also behind the front, MVFR ceilings in the 1500-2000 foot range were noted, and a period of MVFR is likely for the terminals from the pre-dawn hours into Monday morning before improving to VFR.

Ratzer

LOT WATCHES/WARNINGS/ADVISORIES. IL . None. IN . Beach Hazards Statement . INZ001-INZ002 . 7 AM Monday to 10 PM Monday.

LM . Small Craft Advisory . IL nearshore waters until 3 PM Monday.

Small Craft Advisory . IN nearshore waters until 10 PM Monday.



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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
45186 6 mi42 min 68°F 66°F1 ft
WHRI2 - Waukegan Harbor, IL 6 mi112 min S 18 G 23 67°F
45174 14 mi42 min S 9.7 G 14 68°F1 ft997.8 hPa
45187 15 mi42 min 66°F 65°F1 ft
KNSW3 - Kenosha, WI 21 mi52 min SSW 5.1 G 6 68°F 998 hPa (-4.0)
OKSI2 28 mi112 min WSW 1.9 G 4.1 69°F
CHII2 - Chicago, IL 29 mi52 min S 21 G 24 68°F 68°F
CNII2 32 mi37 min S 11 G 25 68°F 66°F
JAKI2 37 mi112 min SSW 5.1 G 13 68°F
CMTI2 - 9087044 - Calumet, IL 41 mi58 min S 6 G 8.9 999.4 hPa

Wind History for Calumet Harbor, IL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Chicago/Waukegan Regional Airport, IL10 mi57 minSW 610.00 miFair67°F65°F93%997.1 hPa
Chicago / Wheeling, Pal-Waukee Airport, IL12 mi60 minSSW 910.00 miA Few Clouds69°F67°F93%999 hPa
Chicago, Chicago-O'Hare International Airport, IL21 mi61 minSSW 10 G 1910.00 miOvercast69°F67°F93%998.5 hPa
Kenosha, Kenosha Regional Airport, WI22 mi59 minWSW 710.00 miFair69°F66°F90%997.3 hPa

Link to 5 minute data for KUGN

Wind History from UGN (wind in knots)
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Last 24hrCalmCalmCalmCalmCalmN3CalmCalmSE5NE5S7E7SE9SE4NE5N5E9E5CalmE3NW4S12S10SW6
1 day agoCalmCalmS4CalmSW113N9NE85SW16SW6
G20
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4NE9
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N7NE10NE9NE7NE9NE7NE4CalmCalmNW3
2 days agoS8SE6N7NE9NW13
G24
SW115W334W7W445NW6533CalmCalmW3CalmCalmCalm

Tide / Current Tables for
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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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