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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 7:39AM | Sunset 6:38PM | Tuesday October 16, 2018 3:15 PM EDT (19:15 UTC) | Moonrise 1:59PM | Moonset 11:21PM | Illumination 47% |  |
LHZ362 Lake Huron From Presque Isle Light To Sturgeon Point Mi Beyond 5nm Off Shore- Lake Huron From Sturgeon Point To Alabaster Mi Beyond 5nm Off Shore- 309 Pm Edt Tue Oct 16 2018
.gale warning in effect through Wednesday evening...
Tonight..Southwest winds 20 to 25 knots becoming west 15 to 20 knots after midnight...then becoming northwest 20 to 25 knots early in the morning. Gusts to 35 knot gales. A chance of showers early in the evening...then showers late in the evening. A chance of showers after midnight. Waves 8 to 12 feet. Waves occasionally around 15 feet.
Wednesday..Northwest winds 20 to 25 knots increasing to 30 knots in the afternoon. Gusts to 35 knot gales. Showers likely until late afternoon...then a chance of showers late in the afternoon. Waves 8 to 12 feet. Waves occasionally around 15 feet.
Wednesday night..Northwest winds to 30 knots decreasing to 20 to 25 knots in the late evening and overnight. Gusts to 35 knot gales. A chance of showers until early morning. Waves 8 to 12 feet. Waves occasionally around 15 feet.
Thursday..Northwest winds 15 to 20 knots becoming west 10 to 15 knots in the late morning and afternoon. Waves 4 to 6 feet.
Thursday night..Southwest winds 15 to 20 knots increasing to 20 to 25 knots in the late evening and overnight. Gusts to 30 knots. Waves 5 to 7 feet. Waves occasionally around 10 feet.
Friday..Southwest winds 20 to 25 knots with gusts to 35 knot gales. A chance of showers early in the afternoon. Rain showers likely early in the evening. Waves 8 to 12 feet. Waves occasionally around 15 feet.
Saturday..West winds 20 to 25 knots becoming northwest 15 to 20 knots in the late morning and early afternoon...then increasing to 20 to 25 knots until early morning. Gusts to 35 knot gales. Showers likely early in the morning...then a chance of showers. Waves 8 to 12 feet. Waves occasionally around 15 feet.
Sunday..Northwest winds 20 to 25 knots with gusts to 35 knot gales decreasing to 15 to 20 knots with gusts to 30 knots. A chance of showers after midnight. Waves 10 to 14 feet subsiding to 5 to 7 feet until early morning. Waves occasionally around 18 feet.
.gale warning in effect through Wednesday evening...
Tonight..Southwest winds 20 to 25 knots becoming west 15 to 20 knots after midnight...then becoming northwest 20 to 25 knots early in the morning. Gusts to 35 knot gales. A chance of showers early in the evening...then showers late in the evening. A chance of showers after midnight. Waves 8 to 12 feet. Waves occasionally around 15 feet.
Wednesday..Northwest winds 20 to 25 knots increasing to 30 knots in the afternoon. Gusts to 35 knot gales. Showers likely until late afternoon...then a chance of showers late in the afternoon. Waves 8 to 12 feet. Waves occasionally around 15 feet.
Wednesday night..Northwest winds to 30 knots decreasing to 20 to 25 knots in the late evening and overnight. Gusts to 35 knot gales. A chance of showers until early morning. Waves 8 to 12 feet. Waves occasionally around 15 feet.
Thursday..Northwest winds 15 to 20 knots becoming west 10 to 15 knots in the late morning and afternoon. Waves 4 to 6 feet.
Thursday night..Southwest winds 15 to 20 knots increasing to 20 to 25 knots in the late evening and overnight. Gusts to 30 knots. Waves 5 to 7 feet. Waves occasionally around 10 feet.
Friday..Southwest winds 20 to 25 knots with gusts to 35 knot gales. A chance of showers early in the afternoon. Rain showers likely early in the evening. Waves 8 to 12 feet. Waves occasionally around 15 feet.
Saturday..West winds 20 to 25 knots becoming northwest 15 to 20 knots in the late morning and early afternoon...then increasing to 20 to 25 knots until early morning. Gusts to 35 knot gales. Showers likely early in the morning...then a chance of showers. Waves 8 to 12 feet. Waves occasionally around 15 feet.
Sunday..Northwest winds 20 to 25 knots with gusts to 35 knot gales decreasing to 15 to 20 knots with gusts to 30 knots. A chance of showers after midnight. Waves 10 to 14 feet subsiding to 5 to 7 feet until early morning. Waves occasionally around 18 feet.
LHZ362 Expires:201810170815;;284139
FZUS63 KDTX 161909
GLFLH
Open Lake Forecast for Lake Huron
National Weather Service Detroit/Pontiac MI
309 PM EDT Tue Oct 16 2018
For waters beyond five nautical miles off shore on Lake Huron
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.
.SYNOPSIS...Low pressure moving across northern Ontario, 29.50
inches, maintains strong wind across marine areas this afternoon
through Wednesday. The system pulls a cold front through the
region tonight that shifts the wind from southwest today to
northwest tonight and Wednesday. Gale Warnings and Small Craft
Advisories remain in effect through tonight with gusty northwest
wind lingering into Wednesday. High pressure, 30.50 inches, then
builds into the Ohio valley and southern Great Lakes Thursday but
moves quickly eastward as the next low pressure system and cold
front approach the northern Great Lakes Friday.
LHZ362-363-170815-
7 Day Forecast for Marine Location Near Harrisville, MI
Hourly EDIT Helplocation: 44.99, -82.16 debug
Area Discussion for - Gaylord, MI
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus63 kapx 161806 afdapx area forecast discussion national weather service gaylord mi 206 pm edt Tue oct 16 2018 Update Issued at 1110 am edt Tue oct 16 2018 A few showers today, lake effect returns tonight... morning composite analysis reveals another mid level short-wave dropping down through W SW ontario. Associated surface low pressure is located over central ontario with a cold front stretching down through far western wisconsin eastern minnesota. Narrow thermal moisture ridge stretches up ahead of the front leaning into the state and producing some weak-ish qg-forcing for ascent along with a band of mid and high cloud cover as well as a pocket of elevated showers streaming through northern lake michigan and the straits tip of the mitt. Otherwise, a decent amount of sunshine across the S E part of the cwa today along with gusty SW winds. Rest of today: band of warm advection qg-forcing for ascent slides through and east of the region ahead of front. Strongest forcing and main chances for rain showers still looking to occur through eastern upper mi, straits and tip of the mitt, and i've cut pops back to just those areas for the afternoon. Cold front leans over through eastern upper and northern lower michigan starting late this afternoon and through this evening, with another shot of colder air arriving tonight. Might be some additional shower activity that develops along the front and down into northern lower michigan at that point. But much better shower (and eventually snow shower) chances come tonight as -8c to -10c h8 air spreads into northern michigan. Near term (today through tonight) issued at 215 am edt Tue oct 16 2018 Breezy with lake enhanced showers increasing today and tonight... high impact weather potential... None. Pattern synopsis forecast... Surface ridge axis is aligned from se ontario thru the western great lakes into the central plains early this morning. Residual lake effect clouds are holding over much of our cwa... Further enhanced by shallow low level moisture spreading out below the subsidence inversion. Our next low pressure system is poised over far western ontario attm... With an associated warm front extending into minnesota and a cold front stretching back to the west thru western canada. An area of showers has developed ahead of the warm front... Currently moving thru the arrowhead of minnesota into NW wisconsin and far western upper michigan. Precip is currently a mix of rain and snow with temps holding mainly in the 30s in these locations. The warm front will slide thru our CWA today... With the cold front quickly following tonight as the parent low tracks eastward thru ontario into quebec over the next 24 hours. Not a great deal of moisture to work with in associated with either front... With deeper moisture holding further north in the vcnty of the surface low center. Do expect increasing chances of showers today into tonight... But primary mechanism for precip production will be lake influences. Initially... This lake enhanced precip will be driven by sw low level flow ahead of the warm front. Low level wind trajectories will then shift to the west and eventually later today and tonight as the cold front sweeps thru the region. SW low level flow will initial focus highest pops across eastern upper michigan and the tip of the mitt today... With focus gradually spreading southward into the typical NW flow regions of northern lower michigan tonight. A mix of rain and snow is expected across eastern upper michigan early this morning... Transitioning to all rain thru the day and into early evening as WAA continues ahead of the warm front. Rain will again mix with change to snow later this evening and overnight as caa commences behind the cold front. Any snow accumulations tonight will be light... I.E. Well under an inch across northern lower michigan and an inch or less for eastern upper michigan. Winds will strengthen as this system impacts our region today. Temps will moderate a bit today thanks to the arrival of the warm front. Afternoon highs will be mainly in the upper 40s and lower 50s. CAA tonight will drop overnight lows into the low to mid 30s across our entire cwa. Short term (Wednesday through Thursday night) issued at 215 am edt Tue oct 16 2018 high impact weather potential: minor snow accumulations Wednesday, primarily across eastern upper and interior northern lower. Pattern synopsis: upper-level troughing will be firmly anchored overhead during the day Wednesday with low-level cold air advection continuing to spill unseasonably chilly air into the northern great lakes. Troughing gradually shifts east Wednesday night with rising heights aloft and surface high pressure marching into the heart of the country from the west will become the rule through the day |
Thursday. Primary forecast concerns challenges: pops and snow amounts Wednesday. Cold air is expected to be locked overhead at the start of the forecast period Wednesday with ongoing lake effect rain snow showers most widespread across northwest flow lake belts of eastern upper and northwest lower mi. Trends continue to support precipitation falling as mostly snow, primarily across eastern upper and along and east of us-131 in north-central and northeast lower, given model soundings suggesting freezing levels sub 1,000 ft (with a mix of rain snow closer to the lake mi coast in NW lower). Boundary layer inversion heights extending upwards of 7-8 kft and plenty of low level moisture extending through -10 c aids to support an additional minor accumulation of snow... Up to an inch or so possible under the steadiest most persistent snow bands across interior north-central lower and eastern upper, although there's the possibility of a narrow corridor of 1-3 inches extending from near whitefish point southeastward toward rudyard kinross given the low fetch over lake superior and upstream connection to lake nipigon. Lake effect shower coverage and intensity is expected to gradually wane Wednesday afternoon into Wednesday night given drier air intruding in association with aforementioned rising heights aloft and surface high pressure nosing in from the west. Will continue to slowly trend pops downward through the afternoon... Although do expected isolated activity to continue in a few northwest flow areas right on through sunset before ending completely. Quiet weather anticipated through the remainder of the forecast period Thursday-Thursday night as low-level winds back more southwesterly aiding to boost high temperatures into the low 50s for most (some 10-15 degrees warmer than the mid-upper 30 degree highs expected on Wednesday). Low temperatures Wednesday night into the chilly 20s for many... Rebounding to the upper 30s-low 40s Thursday night. Long term (Friday through Monday) issued at 215 am edt Tue oct 16 2018 another well-defined trough and associated area of surface low pressure clipper system will dive south out of canada late in the week, dragging a cold front through northern michigan late Friday Friday night. Precipitation chances will be aplenty through the forecast period as another shot of cold air aloft is ushered in behind the system leading to more lake effect rain snow showers continuing at times through the upcoming weekend. Aviation (for the 18z tafs through 18z Wednesday afternoon) issued at 206 pm edt Tue oct 16 2018 low pressure is across ontario with a cold front slicing down through western upper michigan into wisconsin. Ahead of the front, narrow corridor of mid and high cloud cover stretches through northern lower michigan, along with some lower (MVFR) cloud cover coming off northern lake michigan into the tip of the mitt. But outside of that,VFR conditions dominate lower michigan. Cold front will fold down through the region tonight with another shot of cold air arriving. This will set the stage for lake effect rain and snow showers to become widespread across northern michigan later tonight and persisting through Wednesday. Very gusty winds once again this afternoon with gusts running 25 to 35 knots. Winds diminish some tonight but ramp up again Wednesday, although gusts will not be as high as today. Marine Issued at 215 am edt Tue oct 16 2018 winds and waves will reach gale warning criteria today within our nearshore areas of northern lake michigan... The straits and along the far northern shore of lake huron as winds strengthen ahead of an approaching warm front. Conditions will reach SCA criteria within the rest of our nearshore areas today. Lake enhanced shower activity will increase today in SW flow ahead of a warm front... And will further increase tonight as a cold front passes thru our area. Apx watches warnings advisories Mi... None. Lh... Small craft advisory until 6 am edt Wednesday for lhz347>349. Gale warning until 8 pm edt this evening for lhz345-346. Lm... Gale warning until 8 pm edt this evening for lmz323-341-342- 344>346. Ls... Small craft advisory until 6 am edt Wednesday for lsz321-322. Update... Ba near term... Mr short term... Mg long term... Mg aviation... Ba marine... Mr |
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 |
| 45003 - N HURON 37NM Northeast of Alpena, MI | 44 mi | 25 min | WSW 16 G 19 | 51°F | 51°F | 6 ft | 1008.8 hPa (-2.7) | |
| LPNM4 - Alpena, MI - 9075065 | 67 mi | 27 min | W 9.9 G 15 | 54°F | 56°F | 1009 hPa | 31°F | |
| APNM4 - Alpena Harbor Light, MI | 67 mi | 15 min | W 20 G 25 | 54°F |
Wind History for Alpena, MI
(wind in knots) EDIT (on/off) Help| 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 | 9 AM | 10 AM | 11 AM | 12 PM | 1 PM | 2 PM | 3 PM | |
| Last 24hr | NW G22 | NW G23 | NW G15 | NW G14 | W G15 | NW G13 | W G12 | W G9 | W | W | W | W G10 | SW G6 | SW G8 | SW G12 | SW G11 | SW G11 | SW G10 | SW G14 | W G17 | W G21 | W G17 | W G15 | W G14 |
| 1 day ago | SW G11 | S G9 | SE G6 | S | SW | NW | SW | NW | N | NE | -- | N | -- | NW | NW | W | N G20 | NW G14 | NW G14 | NW G14 | NW G12 | NW G19 | W G17 | NW G21 |
| 2 days ago | W G10 | W G9 | W G6 | W | SW | SW | W | W G7 | W | W | SW G6 | SW G5 | SW G7 | SW G7 | W | SW G7 | W | SW G5 | W G10 | NW G9 | SW G8 | SW G10 | S | S |
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| Oscoda, Oscoda-Wurtsmith Airport, MI | 75 mi | 20 min | WSW 24 G 29 | 10.00 mi | Fair and Windy | 56°F | 31°F | 38% | 1010.5 hPa |
Wind History from OSC (wind in knots)
| 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 | 9 AM | 10 AM | 11 AM | 12 PM | 1 PM | 2 PM | 3 PM | |
| Last 24hr | W G29 | W G33 | W G22 | W G23 | W | W G15 | W G20 | W | SW | SW | SW | SW | SW | SW | Calm | SW | SW | SW G18 | SW | SW G17 | SW G25 | SW G30 | SW G31 | SW G28 |
| 1 day ago | S G18 | S | S G15 | S | S | S | Calm | Calm | S | SW | SW | SW | Calm | SW | SW | SW | SW | W | W | NW G16 | NW G16 | W G19 | W G23 | W G24 |
| 2 days ago | W G17 | W G14 | W | SW | S | SW | SW | SW | SW | SW | S | SW | SW | W | SW | SW | SW | SW | SW | SW | W | SW G18 | SW | W |
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.
Link to Loop
Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for Gaylord, MI (15,3,4,5)
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Ground Weather Radar Station Gaylord, 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. |