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Marine Weather and Tides
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7/21/2018 Trying to make page Mobile Friendly |
| Sunrise 6:45AM | Sunset 8:32PM | Monday August 20, 2018 3:01 AM EDT (07:01 UTC) | Moonrise 3:46PM | Moonset 12:36AM | Illumination 64% |  |
LHZ422 Inner Saginaw Bay Sw Of Point Au Gres To Bay Port Mi- 1003 Pm Edt Sun Aug 19 2018
Rest of tonight..Southeast winds 5 to 10 knots. Mostly clear. Waves around 2 feet or less.
Monday..East winds 5 to 10 knots. Partly cloudy becoming mostly Sunny late in the morning becoming partly cloudy. Waves around 2 feet or less.
Monday night..Southeast winds 10 to 15 knots. A chance of showers and Thunderstorms in the evening...then light showers and a chance of Thunderstorms after midnight. Waves around 2 feet or less.
Tuesday..Southeast winds 10 to 15 knots diminishing to 5 to 10 knots late in the morning...then becoming north 10 to 15 knots early in the afternoon becoming northwest 15 to 20 knots late in the afternoon. Showers and a chance of Thunderstorms. Waves 1 to 3 feet. SEe lake huron open lake forecast for days 3 through 5.
Rest of tonight..Southeast winds 5 to 10 knots. Mostly clear. Waves around 2 feet or less.
Monday..East winds 5 to 10 knots. Partly cloudy becoming mostly Sunny late in the morning becoming partly cloudy. Waves around 2 feet or less.
Monday night..Southeast winds 10 to 15 knots. A chance of showers and Thunderstorms in the evening...then light showers and a chance of Thunderstorms after midnight. Waves around 2 feet or less.
Tuesday..Southeast winds 10 to 15 knots diminishing to 5 to 10 knots late in the morning...then becoming north 10 to 15 knots early in the afternoon becoming northwest 15 to 20 knots late in the afternoon. Showers and a chance of Thunderstorms. Waves 1 to 3 feet. SEe lake huron open lake forecast for days 3 through 5.
LHZ422 Expires:201808200930;;923118
FZUS53 KDTX 200203
NSHDTX
Nearshore Marine Forecast for Michigan
National Weather Service Detroit/Pontiac MI
1003 PM EDT Sun Aug 19 2018
For waters within five nautical miles of shore
Waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. Occasional wave height is the average of
the highest 1/10 of the wave spectrum.
LHZ422-200930-
7 Day Forecast for Marine Location Near Bay City, MI
Hourly EDIT Helplocation: 43.58, -83.88 debug
Area Discussion for - Detroit/Pontiac, MI
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus63 kdtx 200358 afddtx area forecast discussion national weather service detroit pontiac mi 1158 pm edt Sun aug 19 2018 Aviation There are a lot of moving parts in the aviation forecast tonight that are benign individually but together can prevent fog from being as dense compared to the last few nights, or not. Satellite imagery still indicates pockets of mid clouds developing and dissipating over southern lower michigan associated with a pocket of higher moisture content in the 5-10 kft level. There is also some thin cirrus arriving from the west that is expected to thicken during the night. This leads to a delicate balance between the mid and high clouds and light surface wind in the determination of fog potential through mid morning. Late evening surface observations do hint at wind speed holding around 5 mph which is usually sufficient to prevent ifr restriction. A few hours of MVFR fog through about mid morning then gives way to a further increasing cloud trend through the day while the chance of rain holds off until later Monday evening. Dtw threshold probabilities * moderate for ceiling 5000 ft or less Monday night. Prev discussion Issued at 322 pm edt Sun aug 19 2018 discussion... similar pattern to yesterdays across the area with moist stagnant low level. Weak surface pressure pattern has allowed several weak differential heating and lake boundaries to develop. Capes values pushing around 1k joules from daytime heating with weak capping have lead to isolated showers so far that have briefly popped up then quickly dissipated along the different boundaries. Low level shortwave that was modeled to move more east across the area has been drifting more southeast and will clip the southwestern portion of the cwa. This may help a few showers thunderstorms develop more across western side of the cwa. Though pwats are lower then yesterday, heavy downpours are still possible with any more intense cell that develops but should not see inch plus amounts like yesterday. Any convection or convection chances will quickly dissipate around sunset. For tonight into Monday, upper level short wave ridging will slide through the great lakes. Subsidence will lead to clear skies tonight and first part of Monday. Low level will remain moist as dewpoints remain in the low to mid 60s. Expect patchy fog development again tonight with some locally dense fog in spots. For Monday, plenty of sunshine the first part of the day will help highs into the low 80s before mid and high level clouds begin advecting in from the southwest ahead of the next system. This system is a closed upper low currently centered over nebraska. This system will |
lift towards lower michigan as it gets drawn up by large upper trough over canada. Models develop a surface low with this system and track it northeast through SW lower to northern lake huron by Tuesday evening. Showers and thunderstorms along and ahead of associated warm front will begin effecting the area near the ohio border late Monday evening and spread through the area Monday night and continue through Tuesday. Coverage of activity will become more scattered behind the warm front and should end early Tuesday night with passage of cold front. Quiet and dry weather returns to the forecast Wednesday as heights aloft rebound and high pressure builds in at the surface. Breezy northwest winds Wednesday will taper off by the evening, becoming light and gradually backing to southerly by Friday as the center of the anticyclone moves eastward through the ohio valley. Cool air, 850mb temps around 8 to 9c, will linger over the area Wednesday in the wake of Tuesday's cold front. High temps on Wednesday in the low to mid 70s will moderate back into the low 80s by the weekend. The next chance for precipitation comes late Friday into Saturday as a shortwave lifts through the region. Marine... light winds and low waves will persist into Monday. A strengthening system will affect the region Tuesday bringing unsettled weather conditions. As the system passes, moderate northwest winds will setup with gust approaching gales - mainly on lake huron - expected Tuesday night into Wednesday. Hydrology... a seasonably strong storm system will sweep across the region Monday night and Tuesday. Widespread rainfall is expected with totals approaching an inch in many locations - with locally higher amounts with any thunderstorm activity. While ponding of water will be prevalent, a widespread flood threat is not anticipated with this activity as local watersheds will have the capacity to absorb and disperse. Dtx watches warnings advisories Mi... None. Lake huron... None. Lake st clair... None. Michigan waters of lake erie... None. Aviation... ..Bt discussion... Drc tf marine... ... .Mann hydrology... .Mann 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 |
| SBLM4 - Saginaw Bay Light #1, MI | 18 mi | 61 min | S 14 G 16 | 72°F | 1016.6 hPa (+0.7) | |||
| 45163 | 32 mi | 21 min | S 12 G 14 | 73°F | 74°F | 1 ft | ||
| GSLM4 - Gravelly Shoals Light MI | 35 mi | 21 min | SSE 13 G 17 | 72°F | 1017.6 hPa | |||
| TAWM4 - Tawas City, MI | 52 mi | 21 min | S 7 G 11 | 71°F | 1017.9 hPa |
Wind History for Harbor Beach, MI
(wind in knots) EDIT (on/off) Help| 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 | 10 PM | 11 PM | 12 AM | 1 AM | 2 AM | |
| Last 24hr | SE | SE | SE | SW | SW | SW | SW | SE | SE | SE | SE | SE | SE | SE | SE | SE | SE | S | SE | SE | SE | S | S G9 | SW |
| 1 day ago | NW | NW | W | W | W | -- | E G11 | E | SE | SE | SE | SE | E | E | NE | NE | NE | NE | NE | NE | NE | E | E | SE |
| 2 days ago | W | SW | NW | N | N | N G11 | N | N G13 | N G15 | N G15 | N | N | N G13 | N | N G15 | N | N G12 | N | N | NW | NW | NW G9 |
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| Saginaw County H W Browne Airport, MI | 10 mi | 66 min | SE 3 | 10.00 mi | Mostly Cloudy | 64°F | 62°F | 94% | 1017.6 hPa |
| MBS International Airport, MI | 11 mi | 68 min | S 5 | 9.00 mi | Overcast | 70°F | 66°F | 90% | 1017.3 hPa |
| Jack Barstow Airport, MI | 21 mi | 66 min | N 0 | 10.00 mi | Overcast | 69°F | 66°F | 92% | 1017.3 hPa |
Wind History from HYX (wind in knots)
| 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 | 10 PM | 11 PM | 12 AM | 1 AM | 2 AM | 3 AM | |
| Last 24hr | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | W | N | E | E | E | W | SW | Calm | E | E | E | SE | S | S | SE |
| 1 day ago | W | NW | Calm | NW | NW | W | NW | N | N | N G14 | N | N | N | N | NE | N | N | N | N | NE | E | Calm | Calm | NW |
| 2 days ago | Calm | Calm | Calm | SW | W | W | NW | NW | NE | N | E | N | NW | NW | NW | NW | NW | NW | NW | NW | W | Calm | W | NW |
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
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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.
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Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for Detroit/Pontiac, MI (3,6,7,8)
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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. |