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Marine Weather and Tides
Version 3.4 |
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported. 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 7:18AM | Sunset 5:53PM | Tuesday October 24, 2017 6:16 AM CDT (11:16 UTC) | Moonrise 11:43AM | Moonset 9:13PM | Illumination 18% |  |
Marine Forecasts
EDIT (on/off) Help| LMZ541 Rock Island Passage To Sturgeon Bay Wi- Sturgeon Bay To Two Rivers Wi-two Rivers To Sheboygan Wi- 329 Am Cdt Tue Oct 24 2017 .gale warning in effect through Wednesday morning... Today..NW wind to 30 kts increasing to gales to 35 kts in the late morning and afternoon. Gusts to 45 kts. Waves 4 to 7 ft. Rain. Tonight..NW gales to 35 kts decreasing to to 30 kts in the late evening and overnight. Gusts to 45 kts. Waves 4 to 7 ft. A chance of showers. Wednesday..NW wind 10 to 20 kts decreasing to 5 to 10 kts early in the afternoon. Waves 1 to 3 ft. Partly Sunny. Wednesday night..N wind 5 to 10 kts veering se after midnight. Waves 2 ft or less. Partly cloudy. | LMZ541 Expires:201710241645;;329243 FZUS53 KGRB 240829 NSHGRB Nearshore Marine Forecast National Weather Service Green Bay WI 329 AM CDT Tue Oct 24 2017 For waters within five nautical miles of shore on Lake Michigan LMZ541>543-241645- |
7 Day Forecast for Marine Location Near Ellison Bay, WI
Hourly EDIT Helplocation: 45.21, -87.02 debug
Area Discussion for - Green Bay, WI
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus63 kgrb 240959 afdgrb area forecast discussion national weather service green bay wi 459 am cdt Tue oct 24 2017 updated aviation portion for 12z TAF issuance Short term Today... Tonight... And Wednesday issued at 247 am cdt Tue oct 24 2017 active weather pattern this week with the development of a deep low pressure system just northeast of the forecast area today for starters. In addition to winds, colder air will provide the chance for a rain snow mix to north central wisconsin later today. Strong pressure gradient developing over northeast wisconsin will produce near or wind advisory criteria for much of the area with the peak of the wind gusts starting late morning or noon. In addition to the stronger pressure gradient for door county, winds mixing down with wrap around showers also provide the potential of near wind warning criteria. With the surface low progged to stall and intensify over the eastern upper michigan and far northern lake michigan with a 120 kt jet wrapping into the system, will head to a high wind warning for door county. Winds may reduce to advisory criteria this evening and later shifts can adjust as needed. Colder air will pour into the region on very gusty northwest winds. Temperatures across the north will turn cold enough for a snow or snow mix before the system departs to the northeast later today into early evening. The upper trough will continue to deepen over the region late tonight into Wednesday morning as a north to south 170 kt jet drops over the western two thirds of the state including parts of central and north central wisconsin. The air mass will be cold enough for snow or snow mix again, before warming to light rain later Wednesday morning. Upper ridge begins to build into the area later Wednesday with the upper trough shifting eastward. Quieter weather with lighter winds and decreasing clouds will return Wednesday afternoon. Long term Wednesday night through Monday issued at 247 am cdt Tue oct 24 2017 focus of this forecast revolves around precip chances and precip type during the Thursday night through Saturday period, when another low pressure system slowly moves across the region. The ECMWF and gfs are in reasonably good agreement, so a blend of these models should suffice. Wednesday night through Thursday night... Some low clouds may linger over east-central wi within a low level convergence zone behind a fast moving clipper. Though it appears these low clouds will depart relatively early in the evening, they look to return to eastern wi late Wednesday night into Thursday morning when low level flow becomes southeasterly off the lake. Wouldnt be surprised to see |
some drizzle or a few light showers develop on Thursday along the lakeshore. At the same time, a potent low pressure system will be moving across the northern mississippi valley on Thursday and wisconsin on Thursday night. Forcing will increase ahead of the low on Thu afternoon into Thu night, with upper divergence and mid-level fgen focusing the heaviest precip over northern wi. Though temps look too warm for any accumulations in the evening, the column may cool enough for an inch of snow on grassy surfaces late Thu night over n-c wi. No significant changes to temps. Rest of the forecast... As the low lifts northeast over northeast wi and the upper peninsula, colder air will be wrapping in behind the low on Fri and Fri night. The air looks to be cold enough for a rain snow mix over north-central wi on fri, and possibly changing back to all snow north and west of the fox valley on Fri night. Perhaps a dusting to a half inch to an inch of accumulations will be possible. Rain and snow showers look to continue for much of sat before ending on Sat night as the low finally moves away. Quieter weather then returns on Sunday. Aviation For 12z TAF issuance issued at 424 am cdt Tue oct 24 2017 northwest winds will ramp up this morning and continue into this evening as a low pressure system stalls and intensifies over eastern upper michigan. The winds could produce crosswind restrictions at some airports. The winds will subside from west to east early this evening as the low pressure system nudges eastward. Rain showers and MVFR conditions will accompany this storm system today. Periods of ifr conditions with the heavier rain showers can be expected. Rain will end from west to east later today along with improving conditions toVFR levels from west to east this evening. Marine Issued at 247 am cdt Tue oct 24 2017 a strong storm is forecast to deepen and remain nearly stationary over eastern upper michigan and northern lake michigan today before shifting to the east tonight. Gale warnings are already in effect for both the bay of green bay and the nearshore waters of lake michigan. Storm warnings have been posted for the open waters of lake michigan. Grb watches warnings advisories Wind advisory until 7 pm cdt this evening for wiz005-010>013- 018>021-030-031-035>040-045-048>050-073-074. High wind warning until midnight cdt tonight for wiz022. Short term... ..Tdh long term... ... Mpc aviation... ... .Tdh marine... ... ... Tdh |
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 |
| NPDW3 - Northport Pier at Death's Door WI | 6 mi | 36 min | NNW 24 G 33 | 50°F | 993.2 hPa | |||
| MN4 - 9087088 - Menominee, MI | 31 mi | 46 min | W 8 G 14 | 50°F | 994.7 hPa | 44°F | ||
| FPTM4 - Fairport, MI | 34 mi | 35 min | NW 17 | 44°F | 991.2 hPa | |||
| 45002 - N MICHIGAN- Halfway between North Manitou and Washington Islands. | 34 mi | 86 min | NW 29 G 37 | 48°F | 56°F | 7 ft | 991.6 hPa (-2.9) | |
| 45014 | 48 mi | 46 min | W 16 G 21 | 52°F | 58°F | 996 hPa |
Wind History for Menominee, MI
(wind in knots) EDIT (on/off) Help| 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 | 11 PM | 12 AM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | |
| Last 24hr | W | -- | W | NW | NE | N | S | E | SE | N | N | NW | N | NW | N | NW | W G9 | W G8 | NW | NW G16 | W G8 | W G11 | W G12 | W G12 |
| 1 day ago | S G14 | S G11 | S | S G10 | SW | NW G22 | NW G10 | W | SW | SW | SW | S G7 | SW G9 | SW G7 | SW G9 | SW | SW | SW | SW | W G7 | W | SW | -- | SW |
| 2 days ago | S G14 | S G14 | S G13 | S G17 | SE G14 | SE G17 | SE G15 | SE | SE | SE G19 | S G20 | S G16 | SE G21 | S G15 | S G14 | S G17 | SE G17 | S G14 | S G12 | S G13 | S G16 | SE G16 | S G16 | S G17 |
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| Door County Cherryland Airport, WI | 32 mi | 20 min | WNW 13 G 21 | 10.00 mi | Light Rain | 49°F | 46°F | 90% | 997.4 hPa |
Wind History from SUE (wind in knots)
| 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 | 11 PM | 12 AM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | |
| Last 24hr | Calm | Calm | Calm | Calm | E | W | NE | E | NW | NE | N | N | N | Calm | Calm | NW | NW | NW | N G18 | NW | W | W G21 | ||
| 1 day ago | S G23 | S G20 | S G21 | S | S | W | NW | W | NW | Calm | W | SW | SW | SW | SW | SW | SW | SW | S | S | Calm | Calm | Calm | Calm |
| 2 days ago | S | S | S | S G23 | S G22 | S G27 | S G22 | S G25 | S G24 | S G30 | S G24 | S G25 | S G23 | S G25 | S G25 | S G25 | S G26 | S G24 | S G24 | S G23 | S G20 | S G20 | S G20 | S G21 |
Tide / Current Tables for
EDIT RT Ports Option Weekend mode (on/off) (on/off) HelpTide / Current Tables for
EDIT (on/off) HelpWeather Map and Satellite Images
(on/off) HelpWeather Map | IR Satellite Image from GEOS GOES Local Image of GreatLakes EDIT  |
Wind Forecast for Green Bay, WI (7,2,3,4)
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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. |