Marine Forecasts

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7 Day Forecast for Marine Location Near Princeton, WI

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Area Discussion for - Milwaukee/Sullivan, WI

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Fxus63 kmkx 210447 afdmkx area forecast discussion national weather service milwaukee sullivan wi 1147 pm cdt Tue aug 20 2019 Update The surface cold front looks to be extending near an eau claire to eagle river late this evening. It should reach a sheboygan to madison line by 12-13z wed. The forcing along the front remains very weak, so only a slight chance for showers expected for now. The forecast remains on track. The drier dewpoints will arrive Wednesday morning in the wake of the front. Aviation(06z tafs) We could still see a period of MVFR ifr CIGS vsbys between about 10-15z Wednesday. This is along and ahead of an approaching cold front that will slide south of wisconsin by mid morning on Wednesday. Light winds ahead of the front will contribute to the lower operating conditions overnight into early Wed morning. Drier air on increasing northerly winds will lift conditions to vfr levels by mid to late morning. Northeast winds are still expected to develop nearly lake michigan by 16-17z wed. This would mainly impact kmke kenw. Prev discussion (issued 908 pm cdt Tue aug 20 2019) update... the regional radar is quiet. It's tough to locate the surface front given the very weak pressure wind field across the upper midwest. From the dewpoint analysis, the front is likely still over northwest wisconsin. The h8 winds are essentially northwest all they way into southern wisconsin. So, we lack any decent convergence along the weak low level boundary. Moisture remains quite high and there is still some decent CAPE available, but given the lack of forcing, it should be difficult to get any showers to develop... Especially as CIN expands. The front should exit southeast wisconsin shortly after 12z Wednesday. Then look for the arrival of lower dewpoints through the day on Wednesday. The light winds and available moisture should help produce some fog again later tonight. But, those northwest winds just off the ground may keep enough mixing around to preclude it from getting too dense. Marine... light winds tonight will become northwest and increase to modest levels Wednesday morning as a weak cold front pushes across the lake overnight into early Wednesday morning. A large canadian high pressure system will build into the region Wednesday into Wednesday night. This will result in rather persistent northeast to east winds for Thursday into Saturday. Prev discussion... (issued 557 pm cdt Tue aug 20 2019) update... no meaningful changes are needed to the forecast tonight. Our focus is on the approaching cold front now located over central wisconsin. It may help spark off some isolated showers or a thunderstorms later this evening and overnight. It should be pushing southeast of wisconsin right around 12z Wednesday. Light winds, clear skies and the lingering high dewpoints could result in some fog and or stratus again later tonight, but will clear out quickly with the frontal passage Wednesday morning. The forecast has all this handled well. Aviation(00z tafs)... expectVFR conditions through the evening. A weak cold front is approaching southern wisconsin from the north. It may help trigger isolated showers and storms later this evening and overnight. Also, light winds, mostly clear skies and humid conditions ahead of the front may result in MVFR ifr CIGS vsbys developing between about 09-13z Wednesday. These lower conditions will improve to vfr levels quickly Wednesday morning as the front pushes off to the southeast and drier air arrives on northwest winds. Winds will turn northeast near lake michigan by late Wednesday morning. This will impact mainly kmke kenw airports.

Prev discussion... (issued 309 pm cdt Tue aug 20 2019) short term... tonight through Wednesday night... Forecast confidence is medium to high... the remnant MCV from the morning convective system that moved through il has been slow to kick east and is now south of kenosha co. Light rain on the northern side of this has been moving into the southern portions of milwaukee co. But as we go through the afternoon expect all of this precip to diminish as the circulation weakens and pushes east. Outflow from an earlier line of storms is moving into the madison area now and although there is an increase in surface convergence, satellite imagery, especially low-level water vapor imagery would suggest drier air is moving in behind the outflow boundary. This is resulted in a clearing of clouds over the western portions of the area. It's still possible that a few parcels could get lifted along the boundary to tap into some modest instability of 1,000-2,000 j kg. However, the dry air entrainment will likely keep storms from developing. Can't rule out an isolated storm but things are going to be hard pressed to develop. Overnight the cold front will be nearing the region and very isolated showers storms are possible along the front. With mostly clear skies the lingering low level moisture ahead of the boundary should allow for fog formation again tonight for a period. The winds picks up as the front moves through and this should help to mix the fog out closer to sunrise. Caa will be taking place for Wednesday and highs will stay in the 70s. The drier air and slight breezes behind the front will make for a nice day. Lows Wednesday night into Thursday bottom out in the lower 50s. Long term... Thursday through Sunday... Forecast confidence is high: high pressure will keep it dry across southern wisconsin through the remainder of the work week and into the weekend. There should be plenty of sunshine during this period, with temps a few degrees below normal Thu Fri warming back to around normal by Sunday. Monday and Tuesday... Forecast confidence is medium to high: southerly low level flow between departing high pressure and an approaching low will bring warmer and more moist conditions to southern wisconsin early next week. A chance for showers and storms is likely to return as well, with some uncertainty as to the timing of the better forcing and storm chances this far out. Aviation(21z tafs)... lingering light rain and isolated thunderstorms are possible until 00z for locations near the wi il border. Drier air in the low mid levels will clear any low level cloud cover still hanging around. Fog is expected to develop tonight after midnight but winds begin to shift to the N NW closer to 12z. Gusty northerly winds are expected for Wednesday behind the cold front. Marine... an isolated shower or storm is possible as a front moves across the area overnight. Ahead of the front though, lingering low level moisture could result in some fog in the nearshore waters tonight. Winds and waves increase behind the front on Wednesday with gusts to 20 knots at times and waves between 1 to 3 feet in the nearshore and 4 to 6 feet in the open waters. High pressure builds in on Thursday resulting in lighter winds and lower waves for the rest of the week. Mkx watches warnings advisories Wi... None. Lm... None. Update... Davis tonight Wednesday and aviation marine... Davis Wednesday night through Tuesday... Ddv

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Weather Reporting Stations

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Stations	Dist	Age	Wind	Air Temp	Water Temp	Waves	Pressure	DewPt
PWAW3 - Port Washington, WI	74 mi	70 min	S 5.1 G 6	71°F			1014.9 hPa
SGNW3 - Sheboygan, WI	75 mi	50 min	WSW 7 G 8.9	73°F			1013.5 hPa (+0.4)	69°F

Wind History for Kewaunee MET, WI

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Airport Reports

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Airport	Dist	Age	Wind kt	Visibility	Sky/Weather	Temp	DewPt	Humidity	Pressure
Wautoma, Wautoma Municipal Airport, WI	14 mi	54 min	N 0	10.00 mi	A Few Clouds	64°F	63°F	96%	1014.4 hPa

Link to 5 minute data for KY50

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Tide / Current Tables for

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Tide / Current Tables for

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Weather Map and Satellite Images

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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.
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Wind Forecast for Milwaukee/Sullivan, WI (1,6,7,8)

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Ground Weather Radar Station Green Bay, WI

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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 numerious 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.