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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 5:58AM | Sunset 9:07PM | Monday May 27, 2019 8:24 AM EDT (12:24 UTC) | Moonrise 2:01AM | Moonset 1:02PM | Illumination 39% |  |
LHZ422 Inner Saginaw Bay Sw Of Point Au Gres To Bay Port Mi- 404 Am Edt Mon May 27 2019
Today..North winds 10 to 15 knots increasing to 15 to 20 knots in the late morning and afternoon. Sunny in the morning becoming partly cloudy. Waves 1 to 3 feet.
Tonight..Northeast winds 15 to 20 knots becoming east 10 to 15 knots in the late evening and early morning, then increasing to 15 to 20 knots after midnight. Light showers likely and a chance of Thunderstorms in the evening, then showers and a chance of Thunderstorms after midnight. Waves 1 to 3 feet building to 2 to 4 feet after midnight.
Tuesday..Northeast winds 15 to 20 knots. Cloudy. Light showers and a chance of Thunderstorms in the morning, then a chance of showers and Thunderstorms in the afternoon. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late morning and afternoon.
Tuesday night..Northeast winds 15 to 20 knots diminishing to 5 to 10 knots. Mostly cloudy with a chance of showers and Thunderstorms. Waves 2 feet or less. SEe lake huron open lake forecast for days 3 through 5.
Today..North winds 10 to 15 knots increasing to 15 to 20 knots in the late morning and afternoon. Sunny in the morning becoming partly cloudy. Waves 1 to 3 feet.
Tonight..Northeast winds 15 to 20 knots becoming east 10 to 15 knots in the late evening and early morning, then increasing to 15 to 20 knots after midnight. Light showers likely and a chance of Thunderstorms in the evening, then showers and a chance of Thunderstorms after midnight. Waves 1 to 3 feet building to 2 to 4 feet after midnight.
Tuesday..Northeast winds 15 to 20 knots. Cloudy. Light showers and a chance of Thunderstorms in the morning, then a chance of showers and Thunderstorms in the afternoon. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late morning and afternoon.
Tuesday night..Northeast winds 15 to 20 knots diminishing to 5 to 10 knots. Mostly cloudy with a chance of showers and Thunderstorms. Waves 2 feet or less. SEe lake huron open lake forecast for days 3 through 5.
LHZ422 Expires:201905271515;;532412
FZUS53 KDTX 270804
NSHDTX
Nearshore Marine Forecast for Michigan
National Weather Service Detroit/Pontiac MI
404 AM EDT Mon May 27 2019
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.
LHZ422-271515-
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 271005 afddtx area forecast discussion national weather service detroit pontiac mi 605 am edt Mon may 27 2019 Aviation Existing visibility restrictions in fog will steadily lift through late morning as diurnal mixing ensues. This will leave an extended period ofVFR conditions lasting into early evening as the area remains within a dry and stable east to southeast flow. A thickening and lowering high based cloud through the day, but with skies remaining clear across the lowest 5000 ft. Surge of mid level moisture as an elevated warm frontal zone lifts into the region will bring increasing potential for showers and elevated thunderstorms tonight after 00z . The greater coverage of thunderstorms will tend to focus within the higher instability residing across the ohio valley, casting some doubt yet in potential coverage locally. Outgoing forecast will maintain a defined mention across the detroit pontiac corridor, with greater uncertainty with northward extent. For dtw... Shallow fog W accompanying vsby restrictions in the vicinity of the terminal will lift over the next couple hours. Otherwise, no aviation concerns thru early evening, with prevailing east winds generally holding below 7 kts. Possible elevated tsra within expanding coverage of showers overnight - best potential centered 03z-08z. Dtw threshold probabilities * low in thunderstorms tonight. Prev discussion Issued at 402 am edt Mon may 27 2019 discussion... ridge of surface high pressure extending southward into central lower will gradually strengthen as it shifts east through the early morning, exiting the area within a couple hours of sunrise. Dewpoints across the lower peninsula are generally in the 40s and low 50s with the exception of a narrow within the southern extent of the surface ridge axis where upper 50s and low 60s are noted. It is within this corridor that dense fog has developed and persisted for several hours warranting a dense fog advisory through 8am. Resident thermal profile features 850mb temperatures in the upper single digits, not impressive by late may standards. Zonal flow within a background of suppressed heights will continue through today, suggesting highs in the mid 70s at best, though likely closer to 70 as convective debris limits insolation. Morning satellite and radar imagery reveals a developing MCV over northern ks and southern NE this morning. As the periphery of a trough transiting the mid and high latitudes of eastern canada strengthen the mid-level flow over the upper ms valley and great lakes regions, the modeled track of said MCV over north-central lower mi will have little wiggle room outside of what is currently depicted by the suite of 00 06z guidance. As such, confidence in the evolution of sensible wx for tonight has taken a step upward. The northern extent of the upstream instability reservoir will build north and east, orienting along a quad-cities-to-chicago line by this evening when developing mid-level forcing and diurnal destabilization will facilitate the expansion of severe convection while mostly stratiform precipitation develops within the deformation zone of the MCV itself. At this stage, there is a high likelihood that nocturnal convection propagating southeast along the instability gradient will either miss the area altogether or graze the southern tier of counties, particularly given that the current strength of the MCV is more in line with the weaker side of guidance suggesting instability may struggle to reach the cwa. Focus for most of the CWA will instead be on the rather routine scenario of convection bubbling within a poor lapse rate environment along the |
lead edge of a strengthening nocturnal llj. Elevated thunder and some heavy downpours within 1.5" pwat environment will characterize the threat for most of the night over most or all of the cwa. A marginal severe hail risk may exist after about 09z Tuesday morning as the tail end of the MCV sweeps through the area coincident with the lead edge of steeper lapse rates advecting northeast out of the central plains. Severe potential remains the focus for Tuesday and will be largely conditional on the state of the instability gradient int he wake of tonight's activity. Most, but not all, 00z guidance has made a strong move toward a southward-displaced gradient that would support a nil threat and temps in the 60s and 70s beneath diurnal stratocu on Tuesday. Steep lapse rate environment will nonetheless warrant monitoring as sufficient destabilization south of the front will likely exist to capitalize on a robust unidirectional wind field and moderate CAPE density supportive of both a wind and hail threat potentially near the ohio border. Confidence increased on just chc thunder on Wednesday north of the front as renewed height falls emanating out of southern canada force instability well to the south. Marine... a generally modest northeasterly wind will prevail across the region today. This flow may favor some localized enhancement of wind across the longer fetch of saginaw bay, resulting in wind speeds up 20 knots at times. Elsewhere, winds generally at 10 to 15 knots through the duration of the holiday. Dry conditions expected to hold through the daylight period. An elevated frontal boundary will lift across lower michigan tonight. This front will bring the potential for thunderstorms overnight into Tuesday. A period of moderate easterly winds will develop north of the boundary across lake huron overnight into Tuesday morning, reaching 20 to 25 knots at times. Wind potential along the nearshore waters will remain more limited, precluding issuance of a small craft advisory at this time. To the south, moderate southwest to west winds will exist over lake st clair and lake erie on Tuesday. An unsettled pattern will maintain the potential for thunderstorms Wednesday and Thursday. Hydrology... an elevated warm frontal boundary lifting across lower michigan will result in scattered to numerous showers and thunderstorms tonight through Tuesday morning. While greater potential for heavy rainfall is currently forecast to remain south of the area, the possibility for localized areas of heavier rain will exist. Basin average rainfall totals between one quarter and one half inch can be expected, but with locally higher totals in excess of an inch possible. This may result in some flooding concerns for urbanized and poor drainage areas. Renewed shower and thunderstorm development may occur again Tuesday afternoon and evening as a frontal boundry settles southward across the region. Once again, greater focus for heavier rainfall will tend to exist to the south, but some localized higher rainfall amounts are possible within any thunderstorm activity. An unsettled pattern will maintain the potential for thunderstorms, with an accompanying localized heavy rainfall threat, both Wednesday and Thursday. Dtx watches warnings advisories Mi... Dense fog advisory until 8 am edt this morning for miz068-075-082- 083. Lake huron... None. Lake st clair... None. Michigan waters of lake erie... None. Aviation... ..Mr discussion... Jvc marine... ... .Mr hydrology... .Mr 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 | 25 min | NE 11 G 13 | 56°F | 1019 hPa (+0.4) | |||
| 45163 | 32 mi | 45 min | NE 5.8 G 7.8 | 59°F | 55°F | |||
| TAWM4 - Tawas City, MI | 52 mi | 45 min | NNE 2.9 G 8 | 55°F | 1020 hPa |
Wind History for Harbor Beach, MI
(wind in knots) EDIT (on/off) Help| 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 | 4 AM | 5 AM | 6 AM | 7 AM | |
| Last 24hr | NW G10 | N | N | N | N G12 | N | N | NE | NE | E | NE | NE | SE | SE | NE | SW | W | W | NW | NW | NW | NW | N G18 | N |
| 1 day ago | SE | S | S | S G17 | S G16 | SW G12 | W G15 | SW G9 | W G18 | W G17 | W G20 | W G23 | W G21 | SW G16 | SW G15 | SW G17 | SW G14 | W G15 | N G22 | N G14 | N | N | N G9 | NW |
| 2 days ago | N | N | N | N | N | NE G8 | N | N | NE | SE | E | SE | SE | SE | S | SE | S | SE | SE | S G14 | S G10 | S G20 | S | S G15 |
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 | 30 min | NE 4 | 10.00 mi | Fair | 59°F | 53°F | 82% | 1019.3 hPa |
| MBS International Airport, MI | 11 mi | 32 min | ENE 5 | 10.00 mi | Fair | 59°F | 53°F | 81% | 1019.5 hPa |
| Jack Barstow Airport, MI | 21 mi | 49 min | N 0 | 10.00 mi | Overcast | 53°F | 51°F | 93% | 1019.3 hPa |
Wind History from HYX (wind in knots)
| 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 | 4 AM | 5 AM | 6 AM | 7 AM | 8 AM | |
| Last 24hr | Calm | NE | NE | E | NE | Calm | NE | N | NE | NE | E | E | E | E | E | E | E | E | SE | SW | SW | Calm | Calm | Calm |
| 1 day ago | S | S | SW G21 | SW G19 | SW G23 | SW G20 | SW G21 | W G27 | W G22 | SW G20 | W | SW G22 | SW G16 | SW | SW | SW | SW | SW | SW | W | NW | NE | Calm | Calm |
| 2 days ago | NW | N | Calm | E | E | Calm | Calm | Calm | S | SE | S | Calm | S | SE | E | E | SE | SE | SE | E | SE | S G23 | SE | SE |
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 Detroit/Pontiac, MI (8,2,3,4)
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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. |