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Marine Weather and Tides
Version 3.4 |
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues. 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. |
| Sunrise 5:51AM | Sunset 7:48PM | Monday April 23, 2018 9:59 PM CDT (02:59 UTC) | Moonrise 12:38PM | Moonset 2:41AM | Illumination 63% |  |
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- 901 Pm Cdt Mon Apr 23 2018 Rest of tonight..NE wind 5 to 10 kts backing N overnight. Waves 2 ft or less. Partly cloudy. Tuesday..NE wind 10 to 15 kts. Waves 1 to 3 ft. Partly Sunny. Tuesday night..N wind 15 to 25 kts. Waves 2 to 4 ft. Mostly cloudy in the evening then clearing. A small craft advisory may be needed. Wednesday..N wind 15 to 25 kts decreasing to 10 to 15 kts in the late morning and afternoon. Waves 2 to 4 ft. Sunny. | LMZ541 Expires:201804241030;;405195 FZUS53 KGRB 240201 NSHGRB Nearshore Marine Forecast National Weather Service Green Bay WI 901 PM CDT Mon Apr 23 2018 For waters within five nautical miles of shore on Lake Michigan LMZ541>543-241030- |
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 232302 afdgrb area forecast discussion national weather service green bay wi 602 pm cdt Mon apr 23 2018 updated aviation portion for 00z TAF issuance Short term Tonight and Tuesday issued at 206 pm cdt Mon apr 23 2018 the latest rap analysis and satellite radar imagery show a ridge of high pressure extending east from new england and into the northern mississippi valley early this afternoon. A cold front remains largely inactive across eastern north dakota, while a larger low pressure system is spinning over the central mississippi valley. The far northern edge of the cirrus associated with this southern system continues to reach northeast wi. However, any deeper moisture remains north and south of the region. With a dry airmass in place, forecast concerns revolve around clouds and temps tonight, and small precip chances on Tuesday afternoon as the front from the north moves into the region. Tonight... Low pressure will continue to spin over the southern ohio valley, while the surface ridge axis will weaken over northern wi. As minor height falls occur aloft, will see mid and high clouds push in from the south and across northeast wi. Low levels will remain dry though, so no threat of precip. Temps will continue their slow warming trend and will go with a range from the low 30s over the north to the upper 30s over the southern fox valley. Tuesday... Will continue to see some high clouds along the lake michigan shoreline during the morning, but those clouds should depart by midday. Then attention turns to the west where a digging shortwave trough will push a weak cold front across the northern and central parts of the state during the afternoon. The shortwave itself appears relatively robust and will bring a moderate amount of upper support. However, moisture as well as low level convergence are lacking, so coverage of showers appears isolated to scattered at best. Will keep a small chance of showers from the fox valley to north-central wi for the afternoon. Otherwise, clouds will be on the increase during the afternoon with highs ranging from the low to mid 60s in the east to the low to mid 50s over vilas county. Long term Tuesday night through Monday issued at 206 pm cdt Mon apr 23 2018 the effects of the cold front, arriving late Tuesday afternoon, will linger into the start of the long term for Tuesday night. |
Kept slight chance pops for Tuesday night due to possible post- frontal rain. This shortwave trough cold front will exit the region by early Wednesday morning. In addition, cooler air will funnel in behind this front, causing Wednesday high temperatures to rise slightly below normal with even cooler temperatures along the lakeshore. The next shortwave trough cold front will move into the region Thursday afternoon. Model guidance is in better agreement with timing and the evolution of this system compared to yesterday. However, the GFS and canadian present more mid-level frontogenetic forcing allowing for more lift and precipitation to occur. The forecast timeframe for precipitation would be Thursday evening and Thursday night. The precipitation would start as rain then transition to a mix or all snow before ending Friday morning. Then quiet weather returns for next weekend. Temps return above normal by Sunday. Aviation For 00z TAF issuance issued at 602 pm cdt Mon apr 23 2018 ridge of high pressure extending over the great lakes region will continue to produceVFR conditions and light winds through the period. A weak cold front will approach the area on Tuesday afternoon. A slight chance of showers will be possible along it during Tuesday afternoon and evening. However chances are too low to include in the tafs with this issuance. Will handle the front with increasing clouds and lower CIGS on Tuesday. Hydrology Issued at 206 pm cdt Mon apr 23 2018 river levels continue to rise from the snow melt runoff. A few rivers have already reached minor flood stage as of this afternoon, with many others forecast to reach or exceed bankfull this week. There are a few chances of rain this week, Tuesday afternoon and then again toward Thursday afternoon and Thursday night. Both systems are not expected to generated much rainfall, so runoff will occur from the warmer temperatures chipping away at the snowpack. The upcoming weekend looks dry as well. Grb watches warnings advisories None. Short term... ..Mpc long term... ... Hykin aviation... ... .Kurimski hydrology... ... Hykin |
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 | 79 min | 44°F | 1020.7 hPa | ||||
| MN4 - 9087088 - Menominee, MI | 31 mi | 41 min | SSE 4.1 G 4.1 | 46°F | 1020.4 hPa | 27°F | ||
| FPTM4 - Fairport, MI | 34 mi | 79 min | ENE 1.9 G 4.1 | 41°F | 1021 hPa |
Wind History for Menominee, 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 | 5 PM | 6 PM | 7 PM | 8 PM | 9 PM | |
| Last 24hr | -- | -- | NE | N | NW | NW | NW | NW | NW | NE | N | N | NE | E | SE | SE | SE | SE | S | SE | SE | S | W | SE |
| 1 day ago | S | S | SW | S | SW | S | S | SE | W | SE | E | SE | SE | SE | SE | SE | SE | SE | SE | SE | SE | SE | N | N |
| 2 days ago | S | S | S | S | S | S G9 | SW | SW | NW | SW G7 | S | SW | S | S | S | S G13 | S | S | S | S G12 | S G11 | S G11 | S G10 | S |
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 | 63 min | E 4 | 10.00 mi | Fair | 51°F | 27°F | 39% | 1023.7 hPa |
Wind History from SUE (wind in knots)
| 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 | 5 PM | 6 PM | 7 PM | 8 PM | 9 PM | |
| Last 24hr | E | E | E | Calm | Calm | S | Calm | S | N | N | E | E | ||||||||||||
| 1 day ago | S | S | S | SW | E | Calm | S | S | S | S | SW | Calm | Calm | S | S | S | S | S | SW | S | ||||
| 2 days ago | S | S | S | Calm | Calm | Calm | W | SW | Calm | S | SW | W | W | W | S | SW | SW | SW | S | S | S | S | S | S |
Tide / Current Tables for
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GOES 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.
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Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for Green Bay, WI (22,6,7,8)
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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. |