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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 6:05AM | Sunset 7:43PM | Sunday August 25, 2019 5:50 PM CDT (22:50 UTC) | Moonrise 12:31AM | Moonset 4:07PM | Illumination 22% |  |
LMZ542 Expires:201908260445;;200574 Fzus53 Kgrb 252016 Nshgrb Nearshore Marine Forecast National Weather Service Green Bay Wi 316 Pm Cdt Sun Aug 25 2019 For Waters Within Five Nautical Miles Of Shore On Lake Michigan Lmz541>543-260445- Rock Island Passage To Sturgeon Bay Wi- Sturgeon Bay To Two Rivers Wi-two Rivers To Sheboygan Wi- 316 Pm Cdt Sun Aug 25 2019
.small craft advisory in effect from Monday morning through Tuesday morning...
Tonight..SE wind 10 to 20 kts. Waves 2 ft or less building to 2 to 4 ft after midnight. A slight chance of showers after midnight.
Monday..SE wind 15 to 25 kts. Waves 3 to 5 ft building to 4 to 7 ft in the afternoon. A chance of showers in the morning, then showers likely and a slight chance of Thunderstorms in the afternoon.
Monday night..SE wind 15 to 25 kts veering sw after midnight. Waves 4 to 7 ft subsiding to 3 to 5 ft after midnight. Showers and a chance of Thunderstorms.
Tuesday..W wind 15 to 20 kts. Waves 2 to 4 ft subsiding to 1 to 3 ft in the afternoon. Partly cloudy in the morning then clearing.
.small craft advisory in effect from Monday morning through Tuesday morning...
Tonight..SE wind 10 to 20 kts. Waves 2 ft or less building to 2 to 4 ft after midnight. A slight chance of showers after midnight.
Monday..SE wind 15 to 25 kts. Waves 3 to 5 ft building to 4 to 7 ft in the afternoon. A chance of showers in the morning, then showers likely and a slight chance of Thunderstorms in the afternoon.
Monday night..SE wind 15 to 25 kts veering sw after midnight. Waves 4 to 7 ft subsiding to 3 to 5 ft after midnight. Showers and a chance of Thunderstorms.
Tuesday..W wind 15 to 20 kts. Waves 2 to 4 ft subsiding to 1 to 3 ft in the afternoon. Partly cloudy in the morning then clearing.
LMZ542
7 Day Forecast for Marine Location Near Forestville, WI
Hourly EDIT Helplocation: 44.71, -87.34 debug
Area Discussion for - Green Bay, WI
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus63 kgrb 251934 afdgrb area forecast discussion national weather service green bay wi 234 pm cdt Sun aug 25 2019 forecast discussion for routine afternoon forecast issuance Synopsis Issued at 234 pm cdt Sun aug 25 2019 scattered showers and thunderstorms at times through Monday night, blustery and mild on Tuesday, then windy and much cooler Wednesday. Slow progression of the large scale pattern is expected for the next few days as an upper trough pushing into the area from the west undergoes strong amplification. The trough will slow mid- week as it closes off into an upper low over western ontario. The bulk of the energy within the trough will lift toward northeast canada late in the week, leaving weakening cyclonic upper flow across the area. The main precipitation event will occur with the frontal system crossing the area early in the period with only a few rounds of scattered light showers are expected thereafter. The result will probably be near to slightly below normal amounts for most locations. Despite day-to-day temperature variations due to the passage of individual weather systems, readings will probably end up near of slightly below normal for the period as a whole. Short term Tonight and Monday issued at 234 pm cdt Sun aug 25 2019 the latest rap analysis and satellite radar imagery show a sprawling high pressure system departing over the northeast conus early this afternoon. Onshore southeast flow around this massive high and daytime heating has produced another day of widespread fair weather clouds across the region. Meanwhile, southerly flow aloft ahead of shortwave energy moving over southeast minnesota and an MCV over eastern kansas is pushing higher moisture into southwest wisconsin. A narrow band of showers is accompanying the leading edge of the more moist air, and its possible that some of these showers will reach into central wisconsin late this afternoon or early evening. Will add a slight chance. As shortwave energy moves into the region, followed by an approaching cold front late on Monday, forecast concerns revolve around timing precip chances and whether a severe threat will develop. Tonight... Weak moisture convergence on the leading edge of the more moist air will lead to a chance of light showers or sprinkles over central to north-central wi this evening. Not sure how far east to carry slight chances of precip, as the moisture convergence generally weakens through the night. After a brief lull in the precip chances, the higher resolution guidance indicates that showers will expand over northern illinois into southeast wisconsin overnight, which will then approach east- central wi by early Monday morning. No firm consensus on this scenario, but given the showers over illinois this afternoon, think this is a reasonable scenario. Lows will be warmer and mostly range from the low 50s near the u.P. Border to the low 60s over the southern fox valley. Monday... Details remain murky in general. Many of the higher |
resolution models indicate the MCV over eastern kansas will lift northeast across eastern wisconsin during the day. If this occurs, marginal severe weather chances would become even lower. Otherwise, much of central and northern wisconsin stand a decent bet of remaining dry during the morning. With 400 to 600 j kg of cape moving in from the west during the afternoon ahead of a cold front, chances for thunderstorms will gradually increase across central and north-central wi. Deep layer shear will also be increasing into the 30-35 kt for thunderstorms to work with if any can develop. But with the cloud cover and potential for rain with the mcv, it is possible that thunderstorms will hold off into the evening with the approaching front. Temps will be similar to todays readings, though could be cooler over eastern wi if rain moves in during the morning. Long term Monday night through Sunday issued at 234 pm cdt Sun aug 25 2019 the primary change in the guidance since yesterday has been to pull back significantly on the precipitation amounts during the next 36 hours. Timing has slowed a little as well. The decrease in QPF seems to primarily be related to the speed with which the primary forcing with the frontal system pushes through the area, and the fact it is now arriving well after dark. Pwats are still forecast to rise to AOA 1.5" for a time, so brief heavy rain is possible with the stronger convection. Although storm motion may be nearly parallel to the front, the front is expected to remain progressive. The main hydro issue will probably be ponding of water if the heavy rain occurs in urban areas. Gusty winds will be possible with the storms, with the potential for severe being limited at best. The default forecast initialization grids based on a broad-based blend of guidance products seemed reasonable for temperatures. In addition to QPF adjustments toward the latest guidance, also adjusted pops up some as the upper trough settles into the area mid-week. Aviation For 18z TAF issuance issued at 1203 pm cdt Sun aug 25 2019 another day with widespread fair weather clouds across the region. A period of broken clouds looks likely away from lake michigan until mid-afternoon. Then a storm system remains on track to impact the region from late tonight into Monday, but details remain murky. It appears that the system will impact the area in pieces. The first piece may pass over the fox valley and lakeshore areas in the morning, with rain and isolated storms, and MVFR CIGS vsbys. More showers and storms then look possible across much of the area from late afternoon into Monday night. Grb watches warnings advisories None. Synopsis... ... .Skowronski short term... ..Mpc long term... ... Skowronski aviation... ... .Mpc |
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 | 19 mi | 57 min | S 5.1 G 7 | 69°F | 1018.3 hPa | |||
| 45014 | 23 mi | 51 min | SSE 9.7 G 14 | 76°F | 70°F | 1018.5 hPa | ||
| MN4 - 9087088 - Menominee, MI | 30 mi | 57 min | SE 9.9 G 11 | 69°F | 71°F | 1018.5 hPa | ||
| NPDW3 - Northport Pier at Death's Door WI | 45 mi | 71 min | E 2.9 G 4.1 | 69°F | 1019.3 hPa |
Wind History for Kewaunee MET, WI
(wind in knots) EDIT (on/off) Help| 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 | -- | NE G5 | NE G7 | NE G7 | E G11 | E G13 | E G15 | E G14 | SE G15 | SE G16 | SE G16 | SE G16 | S | S | SE G13 | SE G16 | SE G15 | SE G14 | SE | SE G13 | SE | SE G12 | S | S G8 |
| 1 day ago | NE G10 | NE G7 | NE G8 | NW | NW G4 | -- | -- | E G10 | E G11 | E | E G11 | E G15 | E G11 | SE G9 | SE | SE G10 | SE G11 | SE | SE | SE G11 | SE G10 | SE G7 | E G8 | E |
| 2 days ago | NE G9 | E | E G5 | NE G5 | NW | NW G4 | NW | N G5 | N G8 | N G9 | N G7 | N G5 | -- | NW G6 | N G7 | NE G10 | NE G10 | NE G8 | NE G9 | NE G8 | E G10 | NE G9 | NE G9 | NE G6 |
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 |
| Door County Cherryland Airport, WI | 9 mi | 55 min | SE 7 | 10.00 mi | Fair | 70°F | 57°F | 66% | 1018.9 hPa |
Link to 5 minute data for KSUE
Wind History from SUE (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 | E | E | E | E | E | SE | SE | SE | SE | SE | SE | SE | SE | SE | SE G16 | SE G14 | S | SE | ||||||
| 1 day ago | E | Calm | Calm | Calm | Calm | N | Calm | Calm | Calm | NE | SE | SE | SE | SE | SE | E | E | SE | E | SE | ||||
| 2 days ago | E | NE | Calm | Calm | NE | NE | NE | NE | NE | N | N | N | N | N | N | NE | NE | E |
Tide / Current Tables for
EDIT Weekend mode (on/off) (on/off) HelpTide / Current Tables for
EDIT (on/off) HelpWeather Map and Satellite Images
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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. |