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Marine Weather and Tides
Version 3.4 |
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports. 6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen |
| Sunrise 6:53AM | Sunset 8:42PM | Monday August 19, 2019 10:45 PM EDT (02:45 UTC) | Moonrise 9:58PM | Moonset 9:42AM | Illumination 80% |  |
LMZ874 Expires:201908200915;;492595 Fzus63 Kmkx 200134 Glflm Open Lake Forecast For Lake Michigan National Weather Service Milwaukee/sullivan Wi 834 Pm Cdt Mon Aug 19 2019 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.. High pressure of 30.0 inches will continue to track slowly east across the western great lakes tonight into Tuesday. This will result in lighter winds lingering into early Tuesday. South to southwest winds will increase across the lake on Tuesday as the high pulls away and low pressure of 29.8 inches moves over minnesota. The low will move across the lake Tuesday night dragging a cold front through the area. Gusty north winds are expected on Wednesday behind the front. Canadian high pressure of 30.2 inches will then settle over the great lakes by Thursday. Lmz080-669-671-673-675-777-779-870-872-874-876-878-200915- 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- 834 pm cdt Mon aug 19 2019 sheboygan wi to pentwater mi south...
Rest of tonight..East winds 5 to 10 kt becoming southeast. Waves 1 to 2 ft.
Tuesday..Southeast winds 10 to 15 kt increasing to 10 to 20 kt. Slight chance of showers and Thunderstorms. Waves 1 to 3 ft.
Tuesday night..South winds 10 to 15 kt veering to west 10 to 20 kt. Waves 1 to 3 ft.
Wednesday..Northwest winds 10 to 20 kt becoming north. Waves 2 to 4 ft.
Wednesday night..North winds 10 to 20 kt becoming northeast 10 to 15 kt. Waves 2 to 4 ft.
Thursday..North winds 10 to 15 kt increasing to 10 to 20 kt. Waves 1 to 3 ft.
Thursday night..Northeast winds 10 to 20 kt diminishing to 10 to 15 kt. Waves 2 to 4 ft.
Friday..Northeast winds 10 to 20 kt. Waves 2 to 4 ft.
Saturday..East winds 10 to 15 kt increasing to 10 to 20 kt. Waves 1 to 3 ft.
Synopsis.. High pressure of 30.0 inches will continue to track slowly east across the western great lakes tonight into Tuesday. This will result in lighter winds lingering into early Tuesday. South to southwest winds will increase across the lake on Tuesday as the high pulls away and low pressure of 29.8 inches moves over minnesota. The low will move across the lake Tuesday night dragging a cold front through the area. Gusty north winds are expected on Wednesday behind the front. Canadian high pressure of 30.2 inches will then settle over the great lakes by Thursday. Lmz080-669-671-673-675-777-779-870-872-874-876-878-200915- 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- 834 pm cdt Mon aug 19 2019 sheboygan wi to pentwater mi south...
Rest of tonight..East winds 5 to 10 kt becoming southeast. Waves 1 to 2 ft.
Tuesday..Southeast winds 10 to 15 kt increasing to 10 to 20 kt. Slight chance of showers and Thunderstorms. Waves 1 to 3 ft.
Tuesday night..South winds 10 to 15 kt veering to west 10 to 20 kt. Waves 1 to 3 ft.
Wednesday..Northwest winds 10 to 20 kt becoming north. Waves 2 to 4 ft.
Wednesday night..North winds 10 to 20 kt becoming northeast 10 to 15 kt. Waves 2 to 4 ft.
Thursday..North winds 10 to 15 kt increasing to 10 to 20 kt. Waves 1 to 3 ft.
Thursday night..Northeast winds 10 to 20 kt diminishing to 10 to 15 kt. Waves 2 to 4 ft.
Friday..Northeast winds 10 to 20 kt. Waves 2 to 4 ft.
Saturday..East winds 10 to 15 kt increasing to 10 to 20 kt. Waves 1 to 3 ft.
LMZ874
7 Day Forecast for Marine Location Near Saugatuck, MI
Hourly EDIT Helplocation: 42.84, -86.63 debug
Area Discussion for - Grand Rapids, MI
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus63 kgrr 200001 afdgrr area forecast discussion national weather service grand rapids mi 801 pm edt Mon aug 19 2019 latest update... aviation Synopsis Issued at 330 pm edt Mon aug 19 2019 - best chance for showers storms the next 7 days is tues afternoon evening. - isolated shower or storm possible this evening and again late tonight. - mainly dry weather expected from Wednesday evening through the weekend. - cooler weather settling in for the end of the week. Discussion (this evening through next Monday) issued at 330 pm edt Mon aug 19 2019 instability continues to creep up this afternoon across the south, where goes-16 satellite imagery shows moderate to towering cumulus. We have maintained isolated (20 pct) chances for a shower or storm. Confidence is not high in this occurring, but the MAX reflectivity via the href ensemble does show the potential for a few showers or storms. Tonight, the main concern will be the reformation of some stratus and fog. Model data suggests that the south (south of i-96) is most prone to the fog stratus. Potential exists for some dense fog towards btl and jxn. Models show the chance for scattered showers and storms late tonight across the southern half of the forecast area in a zone of moisture transport. Not thinking this is a big threat and have opted to stay dry along with neighboring offices for now. The main show will be off to our west where a MCS is expected across the state of iowa. The best chance for precipitation in the next 7 days will come Tuesday afternoon and evening. The showers and storms tomorrow will be forced by a shortwave dropping into the area from the northwest that will be aided by the convective vort likely moving east out of iowa early in the day. We are expecting an uptick in convection during the afternoon. Wind fields and therefore shear is on the light weak side. This could change if the convective vort out of iowa pushes more east toward our area instead of southeast. Instability is greater tomorrow with MUCAPE values likely eclipsing |
2000 j kg. Any severe weather would be isolated and confined to core collapses. Again, if the MCV (mesoscale convective vort) moves more into our area the severe chances will increase. Some small chances for precipitation will linger into Tuesday night and Wednesday along and ahead of the cold front. Otherwise, dry weather is expected Wednesday night through Sunday and potentially Monday. Temperatures cool behind the cold front with highs back into the 70s for Thursday through Saturday. Aviation (for the 00z tafs through 00z Tuesday evening) issued at 800 pm edt Mon aug 19 2019 a few isolated showers will be in the vicinity of btl lan jxn through sunset, but the main concern (again) is the late night fog and stratus potential - where and how dense widespread. The old sfc frontal boundary is stalled near the mi in border and the highest sfc dew pts are near the i-94 corridor. Best chance of fog therefore seems to be at the azo btl jxn terminals again and will have ifr or lower conditions for a few hours late tonight and early Tuesday. Farther north at grr and lan went with a few hours of MVFR. After fog stratus lifts on Tuesday morning,VFR returns but a few showers may develop after 18z. Can't rule out a TSTM either, especially south and east of grr, but was not confident enough to put that in the tafs yet. Marine Issued at 330 pm edt Mon aug 19 2019 a light wind regime will bring quiet conditions out on the big lake from the current time through Tuesday night. A weak pressure gradient will be in place during this time frame. The next time frame of concern will be on Wednesday when we will likely have north winds increasing behind a cold front. This is the typical scenario (advancing high from the northern plains) where our waves over perform. The namnest normally does the best in these situations and the glerl model ran off these winds is indicating the potential for 3-5 footers during the afternoon and evening (working south with time down the shore). No headlines at this point. We will be monitoring. Grr watches warnings advisories Mi... None. Lm... None. Synopsis... Duke discussion... Duke aviation... Meade marine... Duke |
Weather Reporting Stations
EDIT (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 |
| 45029 | 19 mi | 35 min | NNE 3.9 G 5.8 | 73°F | 73°F | 1 ft | 1016.2 hPa | 68°F |
| HLNM4 - 9087031 - Holland, MI | 23 mi | 63 min | N 2.9 G 4.1 | 74°F | 1016 hPa | 68°F | ||
| 45007 - S MICHIGAN 43NM East Southeast of Milwaukee, WI | 24 mi | 35 min | ENE 5.8 G 7.8 | 74°F | 75°F | 1016.5 hPa | 69°F | |
| 45161 | 28 mi | 45 min | E 1.9 G 1.9 | 72°F | 72°F | 1016.4 hPa (-0.2) | ||
| MKGM4 - Muskegon, MI | 31 mi | 35 min | E 4.1 G 4.1 | 71°F | 1016 hPa | 67°F | ||
| 45168 | 34 mi | 35 min | NNE 3.9 G 3.9 | 76°F | 75°F | 1 ft | 1016.1 hPa | 68°F |
| SVNM4 - South Haven, MI | 35 mi | 45 min | ENE 6 G 6 | 77°F | ||||
| SJOM4 - St. Joseph, MI | 52 mi | 45 min | E 1 G 4.1 | 77°F | 1016.9 hPa (-0.0) |
Wind History for Holland, MI
(wind in knots) EDIT (on/off) Help| 10 PM | 11 PM | 12 AM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | 7 AM | 8 AM | 9 AM | 10 AM | 11 AM | 12 PM | 1 PM | 2 PM | 3 PM | 4 PM | -12 PM | 6 PM | 7 PM | 8 PM | 9 PM | |
| Last 24hr | NW | W | W | W | NW | NW | SW | S | SW | S | NW | N | E | S | SW | SW | SW | W | W | NW | N | N | N | |
| 1 day ago | E | SE | E | E | E | S | SE | S | SE G9 | SE | SE G9 | SE G13 | SE G14 | S G35 | S G9 | SE G13 | SE G21 | S G22 | W | SW | SW | SW | SW | W |
| 2 days ago | SE G15 | S | S G15 | S | S | S | S | S | S | S | S | S | S | SW | SW | S | S | S | NW | NW | NW | N | N | N |
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports. Follow links for more data.| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| Holland - West Michigan Regional Airport, MI | 29 mi | 1.9 hrs | N 0 | 10.00 mi | Overcast | 77°F | 69°F | 77% | 1016 hPa |
Link to 5 minute data for KBIV
Wind History from BIV (wind in knots)
| 11 PM | 12 AM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | 7 AM | 8 AM | 9 AM | 10 AM | 11 AM | 12 PM | 1 PM | 2 PM | 3 PM | 4 PM | 5 PM | 6 PM | 7 PM | 8 PM | 9 PM | 10 PM | |
| Last 24hr | Calm | S | Calm | Calm | Calm | SE | Calm | Calm | S | Calm | Calm | SE | SE | Calm | W | SW | W | W | W | NW | Calm | Calm | ||
| 1 day ago | S | SE | Calm | S | Calm | SE | S | S | SE | SE | S | S G18 | SW | W | S | S | S G23 | SW | W G24 | W G16 | W | W | NW | NW |
| 2 days ago | S G17 | Calm | W | SW | Calm | Calm | Calm | S | SE | W | W | W | W | W | SW | Calm | W | NW | Calm | Calm | E |
Tide / Current Tables for
EDIT Weekend mode (on/off) (on/off) HelpTide / Current Tables for
EDIT (on/off) HelpWeather Map and Satellite Images
(on/off) HelpWeather Map
GOES Local Image of 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 Grand Rapids, MI (22,6,7,8)
(on/off) Help
Ground Weather Radar Station Grand Rapids/Muskegon, MI
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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. |