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Marine Weather and Tides
Version 3.4 |
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome. 10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name. |
| Sunrise 6:43AM | Sunset 5:29PM | Wednesday February 20, 2019 5:30 PM CST (23:30 UTC) | Moonrise 7:58PM | Moonset 8:38AM | Illumination 98% |  |
LMZ522 Expires:201901240615;;818154 Fzus53 Kgrb 232128 Nshgrb Nearshore Marine Forecast National Weather Service Green Bay Wi 328 Pm Cst Wed Jan 23 2019 For Waters Within Five Nautical Miles Of Shore On Lake Michigan Lmz521-522-240615- Green Bay South Of Line From Cedar River To Rock Island Passage And North Of A Line From Oconto Wi To Little Sturgeon Bay Wi- Green Bay South Of Line From Oconto Wi To Little Sturgeon Bay Wi- 328 Pm Cst Wed Jan 23 2019
Tonight..W wind 5 to 10 kts. Mostly cloudy.
Thursday..W wind 10 to 15 kts veering nw 15 to 25 kts early in the afternoon. Snow showers likely in the morning. A chance of snow showers in the afternoon.
Thursday night..NW wind 15 to 25 kts. Mostly cloudy in the evening then becoming partly cloudy.
Friday..W wind 10 to 15 kts. Partly cloudy. Waves omitted due to ice coverage. This is the last issuance of the nearshore for the bay of green bay for the season. The forecast for the bay will again be issued on or around april 1 2019.
Tonight..W wind 5 to 10 kts. Mostly cloudy.
Thursday..W wind 10 to 15 kts veering nw 15 to 25 kts early in the afternoon. Snow showers likely in the morning. A chance of snow showers in the afternoon.
Thursday night..NW wind 15 to 25 kts. Mostly cloudy in the evening then becoming partly cloudy.
Friday..W wind 10 to 15 kts. Partly cloudy. Waves omitted due to ice coverage. This is the last issuance of the nearshore for the bay of green bay for the season. The forecast for the bay will again be issued on or around april 1 2019.
LMZ522
7 Day Forecast for Marine Location Near Howard, WI
Hourly EDIT Helplocation: 44.56, -88.1 debug
Area Discussion for - Green Bay, WI
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus63 kgrb 202055 afdgrb area forecast discussion national weather service green bay wi 255 pm cst Wed feb 20 2019 forecast discussion for routine afternoon forecast issuance Short term Tonight and Thursday issued at 254 pm cst Wed feb 20 2019 main concern in the short-term will be the continued freezing drizzle and and snow into the early evening hours. Have continued the winter weather advisory to account for the slippery travel, impacting the evening commute, along with the additional light accumulations expected. Water vapor imagery shows the well defined shortwave sliding across northern ia southern mn this afternoon. Visible satellite imagery shows a very widespread cloud deck across much of the upper great lakes region, stretching all the way down into the mid-mississippi valley. Radar trends continue to show heavier returns across much of the north half of wi, with addition lighter returns sliding form southwest to northeast across northeast ia and eastern mn. The south half of wi shows even lighter returns and surface obs continue to show drizzle freezing drizzle lifting northward. Tonight: the surface low will be directly overhead this evening as an associated shortwave slides through the area. These features will keep enough moisture and forcing in place to allow snow to continue through early to mid evening. Deep layer 1000-500mb rh continues to indicate that the dry slot may pivot into east-central and possibly northeastern wisconsin during this time period. That would be the time period with the greatest precipitation type issues as the moisture becomes more shallow and generally below the -10c isotherm. This would diminish the chances for ice crystals in the cloud layer, allowing for at least a chance of some light freezing drizzle. The rest of the area, will likely keep enough deep moisture in place to keep the precipitation in the form of snow. The snow will diminish from southwest to northeast by mid evening as the better forcing lifts to the north and east of the area and drier air advects into the area. Storm total snowfall should range in the 3 to 6 inch range with a couple higher totals possible over the north half. Locations over the central and east-central wi may end up seeing snow totals closer to the 1 to 3 inch range as more freezing drizzle graupel has mixed in this afternoon. Additionally, with the dry slot moving through this evening, that trend will continue over the east. Otherwise, cloudy skies will linger with overnight lows dropping into the upper teens to low 20s. Thursday: the aforementioned surface low and shortwave will slide across ontario and into quebec as a surface ridge builds in from the mid-mississippi valley. This will allow most of the area to see a break in the precipitation through this time period. The exception may be across north-central locations, where a surface trough is expected to linger. Not expecting much in the way of precipitation, but there could be some light snow showers up that way during the day. The most likely outcome will be increased cloud cover as moisture forcing does not look deep enough to allow for much in the way of precipitation. The remainder of the area will likely see decreasing clouds with mostly cloudy skies to start the day and partly cloudy skies in the afternoon. Long term Thursday night through Wednesday issued at 254 pm cst Wed feb 20 2019 forecast concerns mainly revolve around the next winter storm which is expected to impact the area in two parts this weekend. The medium range models appear to be in good agreement with this system, |
so a blend of the GFS and ECMWF should work. Thursday night through Friday night... Generally quiet conditions will be present on Thursday night and Friday thanks to high pressure at the surface. Broken low clouds could linger into Thursday evening over northern wi. Otherwise should see partial clearing take place as low clouds retreat to the north over the course of the evening. An area of mid-clouds will likely return some cloud cover Thursday overnight into Friday morning, but dry air from the surface high should prevent any precip. The dry conditions should continue into Friday evening with only scattered to broken clouds overhead. Then as a low level jet strengthens ahead of troughing moving into the northern plains, increasing isentropic ascent and mid-level moisture transport will lead to precip spreading in from the west late Friday evening through Friday overnight. Forecast soundings suggest mainly snow will be possible across the region, though freezing drizzle will be also be possible at times since mid-level moisture is thins out occasionally. Perhaps up to an inch will be possible by Saturday morning, highest north and west of the fox valley, with a some spotty ice thrown in there as well. Rest of the forecast... Light precip is expected to continue into Saturday morning but should generally be diminishing as the low level jet veers and weakens at the same time. Think concerns will increasingly center around freezing drizzle over north-central wi as most areas lose mid-level moisture for significant amounts of time, and temps warm above freezing by mid-morning over east-central wi. With the lull in the precip expected during the afternoon, the main surge of precip is anticipated to arrive Saturday evening ahead of a potent shortwave trough and intensifying low pressure system. With the arrival of the precip, a wintry mix looks possible across much of the area, with more rain likely over eastern wi, and more snow over far northern wi. A swath of freezing rain also appears possible, though too early to determine where the highest potential for that will occur quite yet. The column is expected to gradually cool through the evening thereby changing precip to all snow at most locations. Heavy snow is then expected to continue into Sunday morning. Strong and gusty north to northwest winds will lead to blowing and drifting of the new snow on Sunday, which will make for extremely hazardous travel. In terms of potential snowfall, 6 to 10 inches, with locally higher amounts remains possible north and west of the fox valley. The snow and wind diminish on Sunday evening as colder arctic air filters in a the same time. High pressure will then bring quiet weather for Monday. Models indicate another system could impact the region in the Monday night and Tuesday time period, but large spread in the model solutions makes confidence low by this time. Aviation For 18z TAF issuance issued at 1142 am cst Wed feb 20 2019 continued ifr to occasional lifr conditions can be expected into this evening as heavier snow and lower ceilings slide through the area. There may be some breaks to MVFR at times for the eastern taf sites. The best chance for seeing lifr conditions will be at auw, CWA and rhi. Improving conditions can then be expected overnight and especially during the day Thursday. Grb watches warnings advisories Winter weather advisory until 9 pm cst this evening for wiz005- 010>013-018>022-030-031-035>040-045-048>050-073-074. Short term... ..Cooley long term... ... Mpc aviation... ... .Cooley |
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 |
| KWNW3 - 9087069- Kewaunee, WI | 33 mi | 37 min | SSE 13 G 16 | 32°F | 1002.7 hPa | |||
| MN4 - 9087088 - Menominee, MI | 46 mi | 37 min | ENE 9.9 G 12 | 27°F | 35°F | 1003.8 hPa | 15°F |
Wind History for Kewaunee MET, WI
(wind in knots) EDIT (on/off) Help| 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 | 7 AM | 8 AM | 9 AM | 10 AM | 11 AM | 12 PM | 1 PM | -12 PM | 3 PM | 4 PM | |
| Last 24hr | S | SW G10 | SW G9 | W G6 | NW | W | NW | NW G5 | NW | NW | -- | SE | SE G17 | SE | SE | E G21 | E G23 | E | E G25 | E | E G29 | SE G17 | S | |
| 1 day ago | -- | W | NW | NW | W G6 | NW G5 | W | NW G6 | NW | NW | NW | NW | NW | NW | NW | W G7 | W G10 | W | SW G10 | SW G9 | S G9 | S | SW G9 | |
| 2 days ago | NE G23 | N G17 | N G16 | N G14 | NE G28 | NE G23 | NE G24 | N G15 | N G13 | N G14 | N | NW G14 | N G15 | NW G16 | NW G12 | NW G13 | N G9 | N G14 | N G13 | N G11 | N G11 | N | N G8 | NW G6 |
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| Green Bay, Austin Straubel International Airport, WI | 6 mi | 38 min | ESE 4 | 0.75 mi | Light Snow Fog/Mist | 33°F | 30°F | 89% | 1003.7 hPa |
Wind History from GRB (wind in knots)
| 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 | 7 AM | 8 AM | 9 AM | 10 AM | 11 AM | 12 PM | 1 PM | 2 PM | 3 PM | 4 PM | 5 PM | |
| Last 24hr | S | SE | Calm | Calm | Calm | Calm | Calm | Calm | NE | NE | NE | NE | NE | NE | NE | E | E G20 | E | E G24 | E G21 | E | E | E | SE |
| 1 day ago | Calm | S | S | SW | SW | SW | SW | SW | Calm | Calm | SW | SW | Calm | Calm | SW | SE | Calm | S | SW | S | S | S | ||
| 2 days ago | N | NE G23 | NE | NE | N G24 | NE G28 | N | N | N | N | N | N | N | N | N | N | N | N | NW | E | NE | NW | Calm | SW |
Tide / Current Tables for
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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 Green Bay, WI (18,4,5,8)
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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. |