Friday, April20, 2018 L-36.com


Marine Weather and Tides
Glen Arbor, MI

Version 3.4
What's New / NOTES
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.

Sunrise 5:55AMSunset 7:42PM Friday April 20, 2018 3:26 PM CDT (20:26 UTC) Moonrise 9:25AMMoonset 12:00AM Illumination 29% Phase: Waxing Crescent; Moon at 5 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
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LMZ364 Lake Michigan From Seul Choix Point To Rock Island Passage 5 Nm Offshore To Mid Lake- Lake Michigan South Of A Line From Seul Choix Point To The Mackinac Bridge And North Of A Line From Charlevoix Mi To South Fox Island 5 Nm Offshore- Lake Michigan From Charlevoix To Point Betsie Mi 5 Nm Offshore To Mid Lake- Lake Michigan From Point Betsie To Manistee Mi 5 Nm Offshore To Mid Lake- Lake Michigan From Rock Island Passage To Sturgeon Bay Wi- Lake Michigan From Sturgeon Bay To Two Rivers Wi 5 Nm Offshore To Mid Lake- Lake Michigan From Two Rivers To Sheboygan Wi 5 Nm Offshore To Mid Lake- Lake Michigan From Pentwater To Manistee Mi 5 Nm Offshore To Mid Lake- 242 Pm Cdt Fri Apr 20 2018 Sheboygan Wi To Pentwater Mi North...
Tonight..Southwest winds 10 to 15 kt. Waves 1 to 2 ft.
Saturday..South winds 5 to 10 kt. Waves 1 to 2 ft.
Saturday night..South winds 5 to 10 kt becoming east. Waves 1 to 2 ft.
Sunday..East winds 5 to 10 kt becoming northeast. Waves 1 ft or less.
Sunday night..East winds 5 to 10 kt becoming southeast. Waves 1 to 2 ft.
Monday..South winds 5 to 10 kt becoming southwest. Waves 1 ft or less.
Monday night..South winds 5 to 10 kt becoming southwest. Waves 1 ft or less.
Tuesday..Southwest winds 5 to 10 kt increasing to 10 to 15 kt. Waves 1 to 3 ft.
Wednesday..North winds 15 to 25 kt. Waves 4 to 7 ft occasionally to 9 ft.
LMZ364 Expires:201804210330;;247210 FZUS63 KLOT 201942 GLFLM OPEN LAKE FORECAST for Lake Michigan National Weather Service Chicago/Romeoville IL 242 PM CDT Fri Apr 20 2018 FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON Lake Michigan. Waves are provided as a range of significant wave heights, which is the average of the highest 1/3 of the wave, along with the average height of the highest 10% of the waves which will occasionally be encountered. .SYNOPSIS...High pressure of 30.6 inches over the western Great Lakes will drift slowly east across southwestern Ontario and the eastern Lakes through the weekend, while weaker ridging of 30.4 inches lingers across the upper Mississippi Valley. Two areas of low pressure will pass well to the north and well to the south of the Lake, as this ridge axis remains in place across the western Lakes into Monday. The ridge will finally move east of the area Tuesday, allowing a cold front to push southeast across the lake Tuesday night. LMZ261-362-364-366-563-565-567-868-210330-

7 Day Forecast for Marine Location Near Glen Arbor, MI
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location: 45.02, -86.12     debug


Area Discussion for - Gaylord, MI
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Fxus63 kapx 201849
afdapx
area forecast discussion
national weather service gaylord mi
249 pm edt Fri apr 20 2018

Near term (tonight through Saturday)
issued at 247 pm edt Fri apr 20 2018

Temperatures continue to trend up...

high impact weather potential: none.

Pattern synopsis forecast: large area of slowly modifying high
pressure centered directly overhead this afternoon, and looks to
remain centered across the region right through the weekend. This
will bring a continuation of very quiet weather and slowly modifying
temperatures.

Primary forecast concerns challenges: not much for sure, with sole
focus on temperature and cloud trends.

Details: other than some increasing high clouds tonight into
Saturday morning, really not much to talk about to start the weekend
as that high pressure remains centered overhead. Biggest struggle,
if you want to call it that, remains temperature trends as airmass
continues to modify. With that said, and despite those increasing
high clouds, very dry low levels, calm winds, and snow cover
continues to favor another rapid nocturnal temperature response by
later this evening. Will continue to trend toward the colder end of
the statistical guidance spectrum, with widespread 20s expected by
sunrise Saturday. Of course, fully expect some of our traditional
colder locations to be even a few degrees colder. Late april sun
works its magic quickly Saturday morning. Lower level thermal
profiles continue to modify, and given expected great mixing to
about the h8 level, supports highs well into the 50s across interior
areas. Very weak pressure gradient definitely supports the
development of afternoon lake breezes, keeping shoreline communities
quite a bit cooler.

Short term (Saturday night through Monday)
issued at 247 pm edt Fri apr 20 2018

Clear to partly cloudy with warming daytime temperatures...

primary forecast concern... None.

Another straight forward forecast with surface and upper level high
pressure slowly pushing off to our east leading to clear to partly
cloudy skies through the period. Low mid level temperatures continue
to add a couple of degrees c each day so highs will continue to
warm. Looking at highs in the middle 50s to lower 60s Sunday and the
upper 50s to middle 60s Monday. Another chilly night Saturday night
with light winds, mostly clear skies and remaining snow pack
combining to lead to excellent radiational cooling conditions. Lows
ranging from the 20s to lower 30s. Lows Sunday night not a cold with
temperatures bottoming out in the upper 20s to middle 30s.

Long term (Monday night through Friday)
issued at 247 pm edt Fri apr 20 2018
models are consistent with upper level lows and weak surface low
pressure systems around the great lakes region through the extended.

Wednesday through Thursday morning appears to have the greatest
chances of precipitation... In the form of rain... Between 0.25 and
0.50 inches, with higher amounts over the southern forecast area.

Besides that, there appears to be slight chances of showers through
the end of the period, with highs in the mid 50s to low 60s and
nighttime lows in the mid 30s.

Aviation (for the 18z tafs through 18z Saturday afternoon)
issued at 126 pm edt Fri apr 20 2018
vfr conditions to continue under a few passing high clouds. Light
wind through the period.

Marine
Issued at 247 pm edt Fri apr 20 2018
light winds expected the next several days as high pressure
remains over the area. Expect the development of onshore winds
during the afternoon hours as lake breezes develop.

Apx watches warnings advisories
Mi... None.

Lh... None.

Lm... None.

Ls... None.

Near term... mb
short term... As
long term... Tl
aviation... mb
marine... mb


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
GTLM4 - Grand Traverse Light, MI 33 mi47 min W 6 G 7 44°F 1032.8 hPa
NPDW3 - Northport Pier at Death's Door WI 49 mi47 min 51°F 1030.8 hPa
FPTM4 - Fairport, MI 50 mi47 min ESE 8.9 G 9.9 39°F 1031.2 hPa

Wind History for Port Inland, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Frankfort, Frankfort Dow Memorial Field Airport, MI28 mi32 minW 610.00 miFair47°F16°F29%1032.5 hPa

Wind History from FKS (wind in knots)
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Last 24hrNW9NW9
G14
NW4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmNW3W4W6W6W5W4W6
1 day agoNE7
G16
NE5N5N3N4N6N8N5N7N7N6N6N7N7N6N5N10
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2 days agoNW8
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NW4N6NW6N4N3N5N6N4NE3CalmNE5N7N7N8N7N6N7N6

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map and Satellite Images
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wmap_A
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.
target = "new">Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Gaylord, MI (16,3,4,5)
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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.