Monday, January20, 2020
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Marine Weather and Tides
Pleasant Prairie, WI

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 7:14AMSunset 4:50PM Monday January 20, 2020 4:56 PM CST (22:56 UTC) Moonrise 4:25AMMoonset 2:16PM Illumination 19% Phase: Waning Crescent; Moon at 25 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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LMZ646 Wind Point Wi To Winthrop Harbor Il- 306 Pm Cst Mon Jan 20 2020
Through early evening..Northwest wind 5 to 10 knots. Mostly Sunny. Waves 1 to 2 feet.
Tonight..Northwest wind 5 to 10 knots becoming west 10 to 15 knots early in the morning. Mostly clear. Waves around 1 foot.
Tuesday..West wind 10 to 15 knots backing southwest with gusts to around 20 knots late in the afternoon. Sunny. Waves 1 to 2 feet.
Tuesday night..Southwest wind 15 to 20 knots. Gusts up to 25 knots. Partly cloudy. Waves 1 to 2 feet building to 2 to 4 feet in the late evening and overnight.
Wednesday..Southwest wind 15 to 20 knots backing south in the afternoon. Gusts up to 25 knots. Mostly cloudy. Waves 2 to 4 feet. Wave heights are for ice free areas.
LMZ646 Expires:202001211000;;257516 FZUS53 KMKX 202106 NSHMKX Nearshore Marine Forecast National Weather Service Milwaukee/Sullivan WI 306 PM CST Mon Jan 20 2020 For waters within five nautical miles of shore on Lake Michigan LMZ646-211000-


7 Day Forecast for Marine Location Near Pleasant Prairie, WI
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location: 42.52, -87.84     debug


Area Discussion for - Milwaukee/Sullivan, WI
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FXUS63 KMKX 202133 AFDMKX

Area Forecast Discussion National Weather Service Milwaukee/Sullivan WI 333 PM CST Mon Jan 20 2020

SHORT TERM.

Tonight through Tuesday Night . Forecast Confidence is High.

The last of the low clouds are finally scattering out this afternoon and skies should be clear tonight with high pressure nosing in from the northern Plains. The only uncertainty is the potential for some light fog to develop. Given low dewpoints and dry air in place, opted to leave this out of the forecast. Temperatures should fall into the single digits across southern WI tonight with an expected inversion. Many models are leaning toward a slightly warmer forecast, probably due to bias correction, so I undercut the guidance.

Sunny skies will give way to mid level clouds moving in by Tuesday evening. Highs tomorrow will be in the lower 20s, similar to today. Lows Tuesday night will be more mild than tonight, with a quick drop-off in the evening and then gradual warming overnight.

LONG TERM.

Wednesday and Wednesday Night . Forecast Confidence is Medium/High .

The next system is expected to start pushing in from the west Wednesday along a frontal boundary with some influence from an upper level shortwave. There remains some uncertainty with the timing as the low pressure system pulls northeast but generally the western half of the CWA should see some precipitation, likely snow. However, accumulations are expected to remain light at this point.

Thursday Through Saturday . Forecast Confidence is Medium .

As the Wednesday system pulls out there may be a lull in the precipitation as the next system pushes northeast Thursday into Friday. There still remains plenty of uncertainty in this period generally with the most of the uncertainty coming from inconsistency across models in the forcing aloft. Mostly snow is expected for this period but warmer temperatures may cause some mixed precip. The system initially expected Friday night looks to have drifted southeast in its track thus likely not impacting the CWA as much as initially expected. However, there is still uncertainty in the track of this system and we expected the track to continue to change so we will continue to monitor how this system changes.

Sunday Through Monday . Forecast Confidence is Low .

Given the uncertainties in the system track Friday night into Saturday, Sunday and Monday become very uncertain. Models show very different solutions in the upper levels with vast differences in forcing. Thus this period should become more clear as models begin to more closely align as we get a better idea of what will happen with the system Friday night into Saturday. However the period look likely to remain dry at this point.

AVIATION(21Z TAF Update).

The MVFR clouds are diminishing this afternoon as drier air and high pressure work their way into southern WI. Expect clear skies tonight. There is a chance for patchy fog, but will keep it out of the forecast for now due to low confidence. VFR conditions through Tuesday evening.

MARINE.

High pressure spreading into the Great Lakes from the Northern Plains will bring light winds to the region through Tuesday morning. Expect increasing southwest winds Tuesday afternoon into Tuesday night with the departing high. Gale force gusts are possible over the north third of Lake Michigan Tuesday night through Wednesday.

MKX WATCHES/WARNINGS/ADVISORIES. WI . None. LM . None.

Tonight/Tuesday and Aviation/Marine . Cronce Tuesday Night through Monday . ARK


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
KNSW3 - Kenosha, WI 5 mi56 min NNE 8.9 G 11 26°F 1035.6 hPa (+0.0)
MLWW3 - Milwaukee, WI 34 mi46 min NNW 9.9 G 11 25°F
CHII2 - Chicago, IL 44 mi36 min N 8.9 G 8.9 28°F 21°F
CNII2 47 mi41 min N 6 G 11 27°F 19°F

Wind History for Calumet Harbor, IL
(wind in knots)    EDIT      (on/off)   Help
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Last
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W6
G13
W5
G10
W6
G11
W5
G10
W5
G10
W6
G12
W5
G9
W4
G11
W5
G9
W4
G7
SW4
SW4
S6
S4
SW6
SW4
SW3
SW4
SW3
S4
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NW7
G12
N8
G11
1 day
ago
SW14
G25
SW20
G30
SW10
G20
SW16
G23
SW13
G22
SW17
G26
SW13
G27
SW9
G19
SW11
G20
W12
G25
SW12
G18
W11
G17
W6
G18
W5
G13
W7
G14
SW8
G15
SW9
G13
SW7
G13
SW9
G16
W4
G12
W6
G11
W9
G15
W7
G12
W7
G13
2 days
ago
E11
G16
E9
G16
SE12
G18
E16
G22
SE21
G27
SE17
G23
SE13
G20
SE16
G22
SE13
G23
SE10
G18
SE7
G10
SE6
G9
SE6
G9
SE7
G13
S10
G16
S9
G12
S11
G15
SW11
G17
SW11
G17
SW9
G15
SW13
G20
W11
G26
SW19
G27
SW15
G23

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Kenosha, Kenosha Regional Airport, WI7 mi63 minNW 610.00 miFair28°F16°F60%1036.8 hPa
Chicago/Waukegan Regional Airport, IL7 mi61 minNW 410.00 miPartly Cloudy28°F14°F56%1037.3 hPa
Racine, Batten International Airport, WI17 mi63 minN 710.00 miMostly Cloudy25°F16°F69%1037.4 hPa

Link to 5 minute data for KENW

Wind History from ENW (wind in knots)
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Last 24hrW11NW11
G18
NW13NW10NW10NW8NW6
G16
NW10NW11NW8NW9NW5NW7NW8NW4NW4NW4N8N7N5N6NW5NW6NW6
1 day agoW22
G35
--W20
G32
W22
G32
W17
G26
W19
G32
W21
G32
W21
G32
W22
G33
W23
G31
W14
G23
W13W15W15
G22
W11W15W14W14
G24
W14NW11
G20
NW10NW12
G19
NW13NW12
2 days agoSE12SE10SE18
G26
SE17
G27
SE16
G30
SE16
G32
SE21
G28
SE18
G25
SE17
G26
SE13SE12
G23
SE13
G21
S16
G21
SE11S8S7SW6W13W15
G25
W16
G25
W19
G28
W17
G26
W18
G30
W23
G33

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map
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wmap_A
GEOS Local Image of GreatLakes    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Milwaukee/Sullivan, WI (17,4,5,8)
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Ground Weather Radar Station Milwaukee, WI
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weather_mapweather_map weather_map

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Disclaimer:
The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerous of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.