Marine Weather and Tides
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.
|Sunrise 5:14AM||Sunset 8:22PM||Monday May 29, 2017 12:12 PM CDT (17:12 UTC)||Moonrise 9:23AM||Moonset 12:00AM||Illumination 18%|
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|LMZ673 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- 859 Am Cdt Mon May 29 2017 Sheboygan Wi To Pentwater Mi South... |
Rest of today..Southwest winds 10 to 20 kt becoming west 15 to 25 kt. Slight chance of showers and Thunderstorms this afternoon. Waves 1 to 3 ft building to 2 to 4 ft late.
Tonight..West winds 10 to 20 kt. Waves 2 to 4 ft.
Tuesday..Southwest winds 10 to 20 kt. Chance of showers in the afternoon. Waves 1 to 3 ft.
Tuesday night..West winds 10 to 20 kt. Waves 1 to 3 ft.
Wednesday..West winds 10 to 20 kt. Waves 1 to 3 ft.
Wednesday night..Southwest winds 10 to 20 kt. Waves 1 to 3 ft.
Thursday..Southwest winds 10 to 20 kt. Waves 2 to 4 ft.
Friday..West winds 10 to 15 kt. Chance of showers. Waves 1 to 2 ft.
|LMZ673 Expires:201705292115;;398602 FZUS63 KLOT 291359 GLFLM OPEN LAKE FORECAST FOR LAKE MICHIGAN NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 859 AM CDT MON MAY 29 2017 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...BROAD LOW PRESSURE OF 29.5 INCHES OVER ONTARIO WILL REMAIN STATIONARY TODAY AND THEN SLOWLY DRIFT NORTH AND REACH JAMES BAY WEDNESDAY MORNING. HIGH PRESSURE OF 30.2 INCHES WILL BUILD OVER THE PLAINS TUESDAY NIGHT...SLIDE SOUTH OF THE LAKE WEDNESDAY NIGHT...AND THEN REACH THE MID ATLANTIC COAST THURSDAY AFTERNOON. A COLD FRONT WILL SHIFT SOUTH ACROSS LAKE MICHIGAN LATE FRIDAY. LMZ080-669-671-673-675-777-779-870-872-874-876-878-292115-|
7 Day Forecast for Marine Location Near Wind Point, WIHourly EDIT Help
Area Discussion for - Milwaukee/Sullivan, WI  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus63 kmkx 291452 aab|
area forecast discussion... Updated
national weather service milwaukee sullivan wi
952 am cdt Mon may 29 2017
The forecast is on track for the remainder of the day. Sunshine
this morning will give way to increasing clouds from the northwest
as a wave approaches. Still looks like a round of showers can be
expected this afternoon into early evening, with a rumble or two
of thunder possible. Temps will be warmest in the southeast where
the Sun will hang on the longest.
West winds will gust to 25 knots today and a small craft advisory
remains in effect into early evening. Could see gusts to near 25
knots on Tuesday as well. May need another advisory. Gusts to
around 20 knots are likely Wednesday, staying just under advisory
Prev discussion (issued 626 am cdt Mon may 29 2017)
scattered light rain showers from middle level clouds may affect
taf sites over the next few hours, before dissipating. Otherwise,
expect an increase in clouds by late morning into the afternoon,
with any ceilings around 6000 feet this afternoon.
Another chance for showers are forecast for this afternoon into
early this evening. A slight chance for thunderstorms exists, but
left mention out of tafs due to low confidence in thunder
occurring. Gusty west winds are expected by later this morning
into this afternoon, with gusts to 25 knots at times.
Clouds should gradually move out of the area tonight, with light
west southwest winds. Gusty west southwest winds are anticipated
for Tuesday, with gusts to 25 knots at times.
prev discussion... (issued 324 am cdt Mon may 29 2017)
today and tonight... Forecast confidence is medium.
Models are in pretty good agreement with showing a 500 mb low
sliding southeast across portions of lake superior and ontario
canada today. This feature then shifts to the east tonight.
Cyclonic flow across the region is expected at 500 mb, which will
bring an initial vorticity maximum through the area early this
morning. There may be a few showers with this feature in southern
portions of the area.
Another vorticity maximum should then slide southeast toward the
area later this afternoon, moving through in the evening. Area
forecast soundings, adjusted for the expected temperatures and dew
points, support chances for showers and slight chances for
thunderstorms this afternoon. Mesoscale models may be overdone
with areal coverage, as they tend to be in these situations.
Area of clouds should slide southeast into the area later this
afternoon into this evening, before retreating to the north
tonight. Gusty west winds are expected today as well. Highs today
should reach the upper 60s, with lower 70s across far southeast
wisconsin. Lows tonight should be in the upper 40s to lower 50s.
Tuesday... Forecast confidence is medium
the mid level and surface lows will lift north across of ontario.
Several waves of vorticity will move through the region and weak
frontogenesis and some instability results in shower and thunder
chances. It will be a tad cooler. 850 winds will be 25-30 knots and
steep low level lapse rates will promote mixing and breezy west
Wednesday and Thursday... Forecast confidence is high.
Surface high pressure will slide south of the state bringing mainly
dry weather and sunny skies on Wednesday. Temperatures will rebound
slightly as the upper low loses its grip. Behind the high, southwest
flow will bring a push of warmer and more moist air. Precip and
thunder chances return Thursday night.
Friday and Saturday... Forecast confidence is medium.
A frontal boundary looks to be over the region on Friday bringing
precip and thunder chances. As high pressure moves north of the
state a cold front will push south across the region. Precip chances
linger through Friday evening with convergence along the front. High
pressure will continue slides south across the great lakes on
Saturday. Another surge of cooler air looks possible with the cool,
Sunday and Monday... Forecast confidence is low.
Models have been flip flopping for this period showing either high
pressure of or a surface low and precip. As a result, a lot of
uncertainty with temperatures too. Easterly flow will keep
temperatures cooler near the lake.
sct mid level clouds will move across SRN wi early Mon am while
sct-bkn040-050 is expected from late Mon am into Mon eve. Small
chances of showers and a slight chance of a tstorm from late mon
am and through the afternoon. Gusty wly winds expected for mon.
a small craft advisory is in effect from 15z today to 00z Tuesday
across the nearshore waters of lake michigan. A tight pressure
gradient will develop during this period, along with robust low
level mixing. This will result in gusty westerly winds. Frequent
gusts to 25 knots are expected. Any high waves will be over the
open waters, given the offshore flow.
Gusty west southwest winds are possible on Tuesday, as the
pressure gradient remains tight, and low level mixing continues.
The gusts may not be as high as today, so there is some
uncertainty. A small craft advisory may be needed for Tuesday. Any
high waves will remain over the open waters once again.
Mkx watches warnings advisories
Lm... Small craft advisory until 7 pm cdt this evening for lmz643>646.
today tonight and aviation marine... Wood
Tuesday through Sunday... Marquardt
Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
|Stations||Dist||Age||Wind||Air Temp||Water Temp||Waves||Pressure||DewPt|
|45007 - S MICHIGAN 43NM East Southeast of Milwaukee, WI||13 mi||82 min||SW 9.7 G 9.7||52°F||47°F||1 ft||1008.6 hPa (+0.9)||47°F|
|KNSW3 - Kenosha, WI||42 mi||72 min||W 19 G 30||70°F||1008.1 hPa (+0.3)|
|45029||43 mi||22 min||S 7.8 G 12||56°F||55°F||2 ft||1009.2 hPa||49°F|
|MLWW3 - Milwaukee, WI||44 mi||22 min||W 16 G 22||67°F|
|45013||44 mi||33 min||W 14 G 19||63°F||1007.9 hPa|
|45161||45 mi||32 min||SSW 5.8 G 7.8||56°F||54°F||2 ft||1008.7 hPa|
|HLNM4 - 9087031 - Holland, MI||47 mi||42 min||S 8.9 G 9.9||58°F|
|MKGM4 - Muskegon, MI||47 mi||22 min||SSW 4.1 G 5.1||59°F||1008.9 hPa||50°F|
Wind History for Holland, MI(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|Racine, Batten International Airport, WI||39 mi||79 min||W 17 G 23||10.00 mi||Fair||71°F||44°F||38%||1008.1 hPa|
Wind History from RAC (wind in knots)
|1 day ago||SE||SE||SE||SE||SE||S||S||S||S||S||SW||SE||S||S||S||S||Calm||Calm||SW||N||NW||N||N||N|
|2 days ago||E||SE||E||SE||E||Calm||S||E||Calm||Calm||N||Calm||Calm||Calm||Calm||Calm||Calm||Calm||NW||Calm||E||SE||S|
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Weather Map and Satellite Images(on/off)  Help
|Weather Map ||IR Satellite Image from GEOS|
GOES Local Image of GreatLakes EDIT
Wind Forecast for Milwaukee/Sullivan, WI (13,3,4,5)(on/off)  Help
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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.