|
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 7:23AM | Sunset 4:54PM | Sunday November 18, 2018 12:27 PM EST (17:27 UTC) | Moonrise 3:07PM | Moonset 2:06AM | Illumination 81% |  |
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- 915 Am Est Sun Nov 18 2018
Rest of today..Southwest winds 10 to 15 knots increasing to 15 to 20 knots in the afternoon. Waves 3 to 5 feet.
Tonight..West winds 15 to 20 knots decreasing to 10 to 15 knots after midnight. A chance of snow showers early in the morning. Waves 3 to 5 feet.
Monday..Southwest winds 5 to 10 knots increasing to 10 to 15 knots in the late morning and early afternoon...then backing to the east early in the afternoon. A chance of snow showers in the morning. Snow showers likely in the afternoon. Waves 1 to 3 feet building to 2 to 4 feet early in the afternoon.
Monday night..North winds 10 to 15 knots increasing to 15 to 20 knots in the late evening and overnight. Snow showers likely early in the evening...then a chance of snow showers in the late evening and overnight. Waves 3 to 5 feet building to 5 to 7 feet after midnight. Waves occasionally around 10 feet.
Tuesday..North winds 10 to 15 knots becoming northwest 5 to 10 knots late in the morning...then becoming southwest 15 to 20 knots late in the afternoon increasing to 20 to 25 knots with gusts to around 30 knots late in the evening. A chance of. A chance of snow showers. Waves 4 to 6 feet building to 6 to 9 feet late in the evening. Waves occasionally around 12 feet.
Wednesday..West winds 20 to 25 knots with gusts to around 30 knots becoming north 15 to 20 knots early in the evening... Then decreasing to 10 to 15 knots in the late evening and early morning. A chance of snow showers early in the morning. Waves 8 to 12 feet. Waves occasionally around 15 feet.
Thursday..Northeast winds 5 to 10 knots becoming southeast 10 to 15 knots in the late morning and early afternoon...then becoming south 15 to 20 knots until early morning. Waves 3 to 5 feet subsiding to 2 to 4 feet in the late morning and early afternoon...then building to 5 to 7 feet until early morning. Waves occasionally around 10 feet.
Rest of today..Southwest winds 10 to 15 knots increasing to 15 to 20 knots in the afternoon. Waves 3 to 5 feet.
Tonight..West winds 15 to 20 knots decreasing to 10 to 15 knots after midnight. A chance of snow showers early in the morning. Waves 3 to 5 feet.
Monday..Southwest winds 5 to 10 knots increasing to 10 to 15 knots in the late morning and early afternoon...then backing to the east early in the afternoon. A chance of snow showers in the morning. Snow showers likely in the afternoon. Waves 1 to 3 feet building to 2 to 4 feet early in the afternoon.
Monday night..North winds 10 to 15 knots increasing to 15 to 20 knots in the late evening and overnight. Snow showers likely early in the evening...then a chance of snow showers in the late evening and overnight. Waves 3 to 5 feet building to 5 to 7 feet after midnight. Waves occasionally around 10 feet.
Tuesday..North winds 10 to 15 knots becoming northwest 5 to 10 knots late in the morning...then becoming southwest 15 to 20 knots late in the afternoon increasing to 20 to 25 knots with gusts to around 30 knots late in the evening. A chance of. A chance of snow showers. Waves 4 to 6 feet building to 6 to 9 feet late in the evening. Waves occasionally around 12 feet.
Wednesday..West winds 20 to 25 knots with gusts to around 30 knots becoming north 15 to 20 knots early in the evening... Then decreasing to 10 to 15 knots in the late evening and early morning. A chance of snow showers early in the morning. Waves 8 to 12 feet. Waves occasionally around 15 feet.
Thursday..Northeast winds 5 to 10 knots becoming southeast 10 to 15 knots in the late morning and early afternoon...then becoming south 15 to 20 knots until early morning. Waves 3 to 5 feet subsiding to 2 to 4 feet in the late morning and early afternoon...then building to 5 to 7 feet until early morning. Waves occasionally around 10 feet.
LHZ362 Expires:201811182100;;492421
FZUS63 KDTX 181423
GLFLH
Open Lake Forecast for Lake Huron
National Weather Service Detroit/Pontiac MI
915 AM EST Sun Nov 18 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...High pressure averaging 30.20 inches will ridge across
the central Great Lakes today and tonight. Pressure will decrease
slightly to around 30.00 inches Monday into Monday night as a
cold front drops south across the region. Pressure will then
build back to around 30.20 inches Tuesday before another area of
low pressure dives southeast into the central Great Lakes for the
midweek period.
LHZ362-363-182100-
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 181516 afdapx area forecast discussion national weather service gaylord mi 1016 am est Sun nov 18 2018 Update Issued at 1015 am est Sun nov 18 2018 morning composite analysis reveals broad westerly flow and a fairly tight n-s thermal gradient in place across the great lakes, associated upper jet streak stretches from the midwest through new england. Elongated surface high pressure sits across lower michigan north of a stalled front through the ohio valley to the atlantic coast. Further north, low pressure is over hudson bay with an arctic boundary arcing down through ontario north of lake superior. Upper jet entrance region forcing along aforementioned thermal gradient north of the stalled front continues to produce a narrow corridor of snowfall across far southern lower michigan into ohio. Here at home, still dealing with the final remnants of wsw flow lake cloudiness and flurries across a good part of the cwa, especially the tip of the mitt straits region. But dry air subsidence does seem to be getting the best of the lingering lake effect with thinning cloud cover and diminishing returns on radar. Rest of today should be relatively quiet overall with thinning diminishing cloud cover for most and temperatures clawing their way to the upper 20s to lower 30s (still a good 10 degrees below normal). Meanwhile, arctic boundary to the north will be pressing down across lake superior to just north of the u.P. By evening and eventually sagging down into and stalling through the straits region by morning. Clear signal for a thin line of snow to develop along the front especially out across SE ontario where stronger synoptic forcing and steeper low level lapse rates will reside. Weaker signal further west. But combined with lake superior instability, there may be a thin line of enhanced snowfall pressing into northern chippewa county by late afternoon into the evening. Tonight, as mentioned, arctic boundary looking to sag into and stall through the straits region. There will be another northern stream short-wave dropping southeastward out of south-central canada and into the far western great lakes toward morning that will begin to spread some light snowfall into northern michigan. Bigger forecast concern is degree of enhancement we see through northern chippewa county and in the vicinity of the stalled boundary through the staits tip of the mitt due to enhanced low level convergence and over lake instability. Will need to consider whether or not there is enough there to warrant a headline heading into Monday morning. Near term (today through tonight) issued at 319 am est Sun nov 18 2018 high impact weather potential: minimal. Pattern synopsis and forecast: large broad scale upper level troughing was seen across all but the west coast early this morning, with one sheared out shortwave pressing into the central plains and southern rockies, and another one associated with a cold front pressing into ontario. At the sfc, high pressure in the heart of the country extended through the great lakes and into much of the atlantic coast. Satellite, RUC analysis and radar all showing the dry air associated with this high pressure. Radar returns in wsw low level flow was weak to say the least (dry near sfc air and inversion heights between 3.5-4.0kft), and skies were clearing outside this flow regime. Temperatures have plummeted where it has cleared, with many areas in the single digits to teens. The sfc high pressure and dry air will sag south today, while the ontario shortwave works it's way toward quebec. This shove it's cold front southward and into lake superior. The wsw low level flow will continue to provide some very light fluffy snows into at least this morning, but fcst soundings suggest that the dry air may end the white stuff (i'll believe it when I see it). Low level winds veer more west heading into this evening, with still not much in the way of weather. However, the cold front itself will be associated with a band of snow, which drops into chippewa county by late this evening. This could be an impressive "snow squall", as it does start to get enhanced by deepening moisture ahead of an incoming shortwave. Inversion heights climb to 6-6.5kft, and there is plenty of overlake instability. At the same time, hi-res data even suggesting that another area of low level convergence develops from far NRN lower michigan through far NRN lake huron. The les environment isn't as impressive as up in chippewa county, but another band of snow is certainly possible. The shortwave and weak sfc reflection themselves will bring system snow, driven by dpva and waa, but the total deep layer -divq does look to be weakening heading through the overnight hours. Minimal snowfall today, but starting late tonight (and through Monday), we may need a winter weather advisory for a handful of counties across far northern NW lower michigan. Can see 1-2 inches there, and around whitefish point in chippewa county. |
Highs today will be in the upper 20s in eastern upper, to the lower half of the 30s in NRN lower. Lows tonight will probably occur in the evening, as the skies thicken in clouds through the night, stabilizing the temperature drop. Readings will generally be in the teens to lower 20s. Short term (Monday through Tuesday) issued at 319 am est Sun nov 18 2018 high impact weather potential: accumulating snow Monday. Cyclonic flow within low amplitude troughing persists over the great lakes region with ridging continuing in the west. A clipper system drops through the northern plains Sunday night and head towards the upper great lakes on Monday. This system drags a cold front through nrn michigan on Monday, with a band of higher moisture and large scale life near the front supporting synoptic scale snow. Overlake instability with delta-t's of 19 c will contribute to lake enhancement through the day. Could see accumulations of 2-4" across far NW NRN lower michigan, and when combined with Sunday night's snowfall (see near term discussion), we could be seeing the need for a winter weather advisory. Low level winds veer through the day, focusing the snow bands from the straits region southward through the day. By Monday evening the boundary should be south of the cwa, ushering cold dry air out of canada on northerly winds. This will focus the best snowfall near and south of traverse bay overnight. Tuesday will bring high pressure sliding through the ohio valley and another clipper system lurking through the southeastern canadian plains into ontario. Between these two, winds back to westerly then southwesterly through the day Tuesday, focusing lake bands back northward with time, ahead of the next fast moving clipper Tuesday night into Wednesday. Long term (Tuesday night through Saturday) issued at 319 am est Sun nov 18 2018 forecast concerns: minimal. Wednesday remains in cold cyclonic flow with more snow showers possible. Heights start to rise early Thursday morning as the western ridge starts to push eastward. 850 temperatures rise above freezing for thanksgiving day, as a warm front moves northward over the area. Friday and Saturday could bring high temperatures in the low and possibly mid 40s across most of the area. Another system lifting out of the central plains has the potential to bring some snow-melting rain on Saturday. Aviation (for the 12z tafs through 12z Monday morning) issued at 631 am est Sun nov 18 2018 lake effect clouds showers diminishing today. Strong high pressure in the northern plains is extending ridging into lower mi. Lake effect clouds and very light lake snows continue into NW and N central lower mi. The high pressure will gradually work south through the day, allowing winds to increase and become slightly gusty out of the W sw, while ushering in somewhat less cold air. That will erode lake effect from south to north. Pln may be able to see a brief period of MVFR CIGS vsbys this morning. Otherwise,VFR conditions for most of the period. It's late this evening and overnight when system snow and lake effect press into pln with MVFR CIGS and ifr MVFR vsbys. 1-2" possible. Snowfall rates generally under an inch per hour. Snow ratios around 17:1. Marine Issued at 319 am est Sun nov 18 2018 winds are starting to increase over the great lakes, as an axis of high pressure is sinking southward, and the pressure gradient t is tightening ahead of a cold front in canada. Advisory speeds expected most all areas today into this evening. Winds subside with the passing of low pressure later Sunday night through Monday, but advisory level gusts are once again possible Monday night when this low pressure departs. Apx watches warnings advisories Mi... None. Lh... Small craft advisory until 7 pm est this evening for lhz345-346. Small craft advisory until midnight est tonight for lhz347-348. Lm... Small craft advisory until 7 pm est this evening for lmz341. Small craft advisory until midnight est tonight for lmz323-342- 344>346. Ls... Small craft advisory until 7 pm est this evening for lsz321-322. Update... Ba near term... Smd short term... Stj long term... Stj aviation... Smd marine... Smd |
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 |
| LPNM4 - Alpena, MI - 9075065 | 67 mi | 40 min | WSW 8 G 14 | 33°F | 48°F | 1021.7 hPa | 16°F | |
| APNM4 - Alpena Harbor Light, MI | 67 mi | 28 min | WSW 15 G 19 | 33°F |
Wind History for Alpena, MI
(wind in knots) EDIT (on/off) Help| 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 | 9 AM | 10 AM | 11 AM | 12 PM | |
| Last 24hr | N G13 | N G11 | N G13 | NW G12 | N G7 | NW G12 | N G10 | N G7 | NW | N G6 | NW | N | NW | N | N | N | NW | NW | SW | SW G10 | SW G9 | SW G10 | W G15 | W G13 |
| 1 day ago | NW G12 | NW G10 | NW | NW G13 | NW G10 | NW G12 | NW G12 | NW G11 | NW | NW G16 | NW G17 | NW G16 | NW G17 | NW G15 | NW G12 | N G8 | N G13 | NW G13 | NW G9 | NW G8 | NW | NW G9 | N G11 | N G16 |
| 2 days ago | SW | S G11 | SW | S G13 | S G17 | S G14 | SW G15 | SW G5 | SW G11 | SW | W G4 | SW | N | N | N | NW | W | W G5 | W | W | NW G6 | NW | W G8 | W |
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 | 33 min | WSW 13 | 10.00 mi | Overcast | 32°F | 22°F | 68% | 1022.3 hPa |
Wind History from OSC (wind in knots)
| 1 PM | 2 PM | 3 PM | 4 PM | 5 PM | 6 PM | 7 PM | 8 PM | 9 PM | 10 PM | 11 PM | -12 PM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | 7 AM | 8 AM | 9 AM | 10 AM | 11 AM | 12 PM | |
| Last 24hr | NW | W | N | N | NW | NW | N | W | NW | Calm | Calm | Calm | N | Calm | Calm | Calm | Calm | NW | Calm | Calm | Calm | SW | SW | W |
| 1 day ago | SW | SW | SW | SW | SW | W | SW | W | SW | W | NW | NW | NW | W G15 | W | W | W | W | W | W | W | NW | NW | NW |
| 2 days ago | SE | SE | SE | SE | S | S | SE | SE | SE | Calm | Calm | SW | SW | W | W | SW | SW | SW | SW | SW | SW | SW | SW | SW |
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
(on/off) HelpWeather Map
GOES Local Image of GreatLakes 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 (12,3,4,5)
(on/off) Help
Ground Weather Radar Station Gaylord, MI
(on/off) Help
Ad by Google
|
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. |