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Marine Weather and Tides
Version 3.4 |
10/9/2019 Updated the Marine Zones. 9/4/2019 Fixed the weather maps due to NOAA moving them. 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 7:48AM | Sunset 6:46PM | Saturday October 19, 2019 5:50 PM EDT (21:50 UTC) | Moonrise 9:49PM | Moonset 12:24PM | Illumination 63% |  |
LCZ423 627 Pm Edt Tue Oct 1 2019
.a strong Thunderstorm over the waters... The areas affected include... Detroit river... Michigan waters of lake erie... At 625 pm edt, doppler radar indicated a strong Thunderstorm, capable of producing winds to up 30 knots and small hail. This Thunderstorm was located over detroit river light, moving east at 20 knots. The strong Thunderstorm will be near, detroit river light around 630 pm edt. Other locations impacted by the strong Thunderstorm include stony point, estral beach and gibraltar. Precautionary/preparedness actions... Mariners can expect gusty winds up to 30 knots, locally higher waves, and lightning strikes. Boaters should seek safe harbor immediately until this storm passes. && lat...lon 4192 8327 4195 8327 4197 8326 4200 8322 4203 8321 4204 8322 4205 8321 4204 8320 4211 8320 4210 8313 4203 8315 4197 8311 4196 8311 4190 8319
.a strong Thunderstorm over the waters... The areas affected include... Detroit river... Michigan waters of lake erie... At 625 pm edt, doppler radar indicated a strong Thunderstorm, capable of producing winds to up 30 knots and small hail. This Thunderstorm was located over detroit river light, moving east at 20 knots. The strong Thunderstorm will be near, detroit river light around 630 pm edt. Other locations impacted by the strong Thunderstorm include stony point, estral beach and gibraltar. Precautionary/preparedness actions... Mariners can expect gusty winds up to 30 knots, locally higher waves, and lightning strikes. Boaters should seek safe harbor immediately until this storm passes. && lat...lon 4192 8327 4195 8327 4197 8326 4200 8322 4203 8321 4204 8322 4205 8321 4204 8320 4211 8320 4210 8313 4203 8315 4197 8311 4196 8311 4190 8319
LCZ423 Expires:201910012300;;066930
FZUS73 KDTX 012227
MWSDTX
Marine Weather Statement
National Weather Service Detroit/Pontiac MI
627 PM EDT Tue Oct 1 2019
LCZ423-LEZ444-012300-
7 Day Forecast for Marine Location Near Gibraltar, MI
Hourly EDIT Helplocation: 42.04, -83.12 debug
Area Discussion for - Detroit/Pontiac, MI
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus63 kdtx 191941 afddtx area forecast discussion national weather service detroit pontiac mi 341 pm edt Sat oct 19 2019 Discussion Expect quiet weather through the weekend and seasonably mild temperatures through Monday before a strong low pressure system lifts through the great lakes late Monday into Tuesday bringing showers and windy conditions across the region. Broad upper level trough will then hold over the great lakes through the week keeping cool air in place with a couple more chances of showers. First order of business is dealing with a weakening cold front currently to our west extending from western ontario southward through missouri. The parent low is well to the northwest of the area over northern manitoba and appears to be tracking farther north overnight. This will pull the best forcing northward while the front continues its push east through lower mi. Models keep a narrow ribbon of moisture and weakening fgen along the front tonight as the front passes but lack of moisture and dry low levels owning to the current ridge in place should result in mainly mid clouds advancing over the area tonight. There could be a few drops of rain mainly over the saginaw valley but a very low chance thus will leave out of the forecast. Current regional radar loop shows the southern extent of the front becoming fairly scattered which gives credit to the continued weakening trend. The clouds will keep min temps a bit higher tonight, 40s across the area, preventing the frost we've been seeing in recent days. High pressure builds back into the region Sunday as flow flips southerly and shortwave ridge slide over the region ahead of the deepening trough. This will lead to another pleasant fall day with temps rising into the mid 60s and plenty of sunshine. By Monday morning the strengthening trough will be over the central plains with lee cyclogenesis taking place on the nose of a potent 140+ knot jet max. A shortwave jet MAX exiting the trough will align north south Monday afternoon which will excite a short period of decent warm air advection with a narrow corridor of moisture lifting north of the cold front before it sweeps through Monday night. Pwats look to jump from around the current 0.75" to possibly over 1.25". The rapidly deepening surface low will track northeast through the northern great lakes Monday night and Tuesday. This track will pull the best forcing on the isentropic arm north of the region while the instability gradient focuses south of the region. We're left in an all too common position with a high shear low CAPE environment in the vicinity of an occluding front splitting the two favorable regions of forcing. Will advertise showers with embedded isolated thunderstorms for now Monday and Monday night. Temperatures will be mild Monday back into the mid 60s but gusty winds over 30 mph and cloudy skies will take some enjoyment out of that even before the rain starts in the afternoon. Troughing then encompasses the region Tuesday through the remainder of the week as the upper level low stalls over ontario quebec with reinforcing shortwaves entering the trough to keep it over the region. Highs will hover in the 50s with lows around 40. There is a chance of showers on Tuesday as the trailing trough and deformation region swings through lower mi. Boundary layer mixing and cold air advection will lead to strong low level lapse rates aiding in afternoon shower development. Westerly flow then looks to set up |
heading into the latter part of the week before hints of the next trough start taking shape heading into the weekend. Marine Fresh southerly flow of 10 to 15 knots with gusts of 20 to 25 knots will diminish this evening and remain light and variable into Sunday as a surface ridge builds east into the region. Southeast winds will begin to increase by Monday morning as a low pressure system deepens and lifts northward into the upper mississippi river valley and far western basin of lake superior. Winds will increase further late Monday into Monday night as this system approaches. A gale watch has been issued as gusts over portions of lake huron may very well push 40 knots by Monday evening. Winds will then shift to the southwest overnight Monday night with any remaining gale force gust potential focusing from saginaw bay into central lake huron as the wind funnels up the bay. Winds will then shift to the west and gradually weaken from Tuesday night into Wednesday as the low pressure system lifts north to the southern shores of hudson bay. Hydrology Strong low pressure will track into the northern great lakes on Monday with a trailing cold front then pivoting east northeast through the region Monday night. Widespread rainfall is expected from Monday afternoon into Monday night as this system encroaches on and then passes through the area. At this time, it appears that rainfall amounts of three quarters of an inch will be quite possible in many locations with local amounts of around an inch not out of the question. Such rainfall totals should not cause any significant flooding risks although ponding of water on area roadways and other prone areas can be expected. Prev discussion Issued at 1255 pm edt Sat oct 19 2019 aviation... vfr conditions are expected this forecast with cirrus thickening and lowering, especially tonight into Sunday. Some lower clouds may work into kmbs kfnt on Sunday (5-10kft) as southwest flow begins to take shape on the back side of passing surface ridge. A period of patchy fog will be possible again early Sunday morning as calm conditions will exist within this ridge. Dtw threshold probabilities... * none. Dtx watches warnings advisories Mi... None. Lake huron... Gale watch from Monday afternoon through late Monday night for lhz361>363-421-422-441>443-462>464. Lake st clair... None. Michigan waters of lake erie... None. Discussion... Drk marine... ... .Dg hydrology... .Dg aviation... ..Dg you can obtain your latest national weather service forecasts online at |
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 |
| THLO1 - Toledo Light No. 2 OH | 15 mi | 51 min | E 13 G 15 | 56°F | ||||
| TWCO1 | 25 mi | 31 min | ESE 15 G 17 | |||||
| THRO1 - 9063085 - Toledo, OH | 30 mi | 51 min | SE 7 G 12 | 60°F | 1011.1 hPa (-2.8) | 38°F | ||
| CLSM4 - St. Clair Shores, MI | 32 mi | 51 min | SSE 8.9 G 11 | 58°F | 1012.2 hPa (-2.4) | |||
| SBIO1 - South Bass Island, OH | 32 mi | 51 min | E 6 G 8.9 | 58°F | 1012 hPa (-2.1) | |||
| CMPO1 | 35 mi | 81 min | ENE 6 G 8 | 58°F | ||||
| 45147 - Lake St Clair | 36 mi | 51 min | 56°F | 53°F | 1 ft | 1012 hPa (-2.3) | ||
| MRHO1 - 9063079 - Marblehead, OH | 40 mi | 51 min | ENE 7 G 11 | 57°F | 56°F | 1011.8 hPa (-1.8) | 46°F | |
| 45005 - W ERIE 28NM Northwest of Cleveland, OH | 46 mi | 31 min | ENE 9.7 G 12 | 58°F | 1012.7 hPa | 46°F |
Wind History for Toledo, OH
(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 | E | E | E | SE | -- | SE | SE | SE | SE | SE | SE | SW | SE | SE | S | S G6 | SW G6 | S | S | S G11 | SE G10 | S G9 | SE | SE G12 |
| 1 day ago | NW G15 | NW G9 | NW | W G10 | NW G11 | NW G11 | NW | NW | NW | NW G7 | NW | NW | NW G8 | NW | N G6 | NW | NW | E | E | E | NE G8 | NE G8 | E | |
| 2 days ago | W G18 | NW G14 | NW G21 | NW G19 | NW G19 | NW G18 | NW G17 | NW G20 | NW G17 | NW G14 | NW G17 | NW G17 | NW G12 | NW G15 | NW G14 | NW G16 | NW G16 | NW G23 | NW G22 | NW G24 | NW G22 | NW G14 | NW G17 | NW G11 |
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 |
| Detroit/Grosse Ile, Grosse Ile Airport, MI | 5 mi | 75 min | SSE 5 | 10.00 mi | Mostly Cloudy | 56°F | 43°F | 62% | 1011.8 hPa |
| Detroit, Detroit Metropolitan Wayne County Airport, MI | 17 mi | 58 min | SE 7 | 10.00 mi | Mostly Cloudy | 58°F | 41°F | 53% | 1011.9 hPa |
| Monroe, Custer Airport, MI | 18 mi | 55 min | ESE 8 | 10.00 mi | Fair | 58°F | 40°F | 51% | 1011.5 hPa |
Link to 5 minute data for KONZ
Wind History from ONZ (wind in knots)
| 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 | 6 PM | |
| Last 24hr | S | S | S | Calm | E | E | E | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | S | S | S | S | SE | SE | SE | SE |
| 1 day ago | NW G14 | NW | NW | W | NW | NW | N | NW | NW | NW | NW | NW | NW | N | NW | N | NW | N | NE | SW | W | S | S | S |
| 2 days ago | NW G25 | NW G19 | NW G20 | NW G20 | NW G22 | NW G25 | NW G22 | NW G19 | NW G18 | NW G20 | NW G17 | NW G17 | NW G18 | NW G18 | NW G17 | NW G14 | NW G16 | NW G17 | NW G21 | NW G22 | NW G20 | W G19 | NW G15 | NW G9 |
Tide / Current Tables for
EDIT Weekend mode (on/off) (on/off) HelpTide / Current Tables for
EDIT (on/off) HelpWeather Map
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GEOS 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 Detroit/Pontiac, MI (17,4,5,8)
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Ground Weather Radar Station Detroit, 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. |