Thursday, March21, 2019 L-36.com


Marine Weather and Tides
Beaverton, MI

Version 3.4
What's New / NOTES
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 7:36AMSunset 7:51PM Thursday March 21, 2019 8:02 AM EDT (12:02 UTC) Moonrise 7:47PMMoonset 7:21AM Illumination 100% Phase: Full Moon; Moon at 15 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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LHZ422 Inner Saginaw Bay Sw Of Point Au Gres To Bay Port Mi- 339 Am Edt Thu Mar 21 2019
Today..Light and variable winds becoming west 5 to 10 knots in the afternoon. Cloudy. Waves 2 feet or less.
Tonight..West winds 5 to 10 knots increasing to 10 to 15 knots in the late evening and overnight. Mostly cloudy. A slight chance of light rain after midnight. Waves 2 feet or less.
Friday..Northwest winds 15 to 20 knots. Gusts to 30 knots in the late morning and afternoon. Cloudy in the morning becoming partly cloudy. Waves 1 to 3 feet. A small craft advisory may be needed.
Friday night..Northwest winds 15 to 20 knots diminishing to 10 to 15 knots after midnight. Mostly clear. Waves 1 to 3 feet. Wave heights are for ice free areas. SEe lake huron open lake forecast for days 3 through 5.
LHZ422 Expires:201903212100;;687724 FZUS53 KDTX 210739 NSHDTX Nearshore Marine Forecast for Michigan National Weather Service Detroit/Pontiac MI 339 AM EDT Thu Mar 21 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. LHZ422-212100-


7 Day Forecast for Marine Location Near Beaverton, MI
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location: 43.88, -84.42     debug


Area Discussion for - Gaylord, MI
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Fxus63 kapx 211037
afdapx
area forecast discussion
national weather service gaylord mi
637 am edt Thu mar 21 2019

Near term (today and tonight)
issued at 345 am edt Thu mar 21 2019

Another round of light precip tonight...

high impact weather potential: none.

Pattern synopsis forecast: overnight composite analysis reveals
our closed mid level low sliding southward along the long axis of
lake michigan western lower michigan. Attending surface low is
across southern lower michigan. Deformation forcing and associated
light snow rain mix continues to fade across the CWA early this
morning. Weak low level flow remains and we've seen a fair amount
of fog mist through the overnight hours.

Meanwhile, larger scale troughing of course lingers across eastern
canada and even a large part of the eastern conus, downstream from
weakening omega blocking over the western-central conus. Yet
another short-wave attending surface low and developing cold front
is diving southeastward through manitoba into ontario. This next
system will be rolling down through the great lakes later this
afternoon through tonight.

Primary forecast concerns: precip chances type tonight with this
next wave.

Today: first off, light precip has pretty much come to an end
(still a few blips on radar as of this writing). But fog will
linger through a good part of the morning and i'll need to extend
fog out a bit longer than what we currently have in there.

Otherwise, sharp short-wave trough axis will slip on to our
south east as we go through the morning with brief short-wave
ridging nosing into northern michigan into the afternoon. Lots of
low level moisture cloud cover spans the region up into canada
which will lead to an overall cloudy day after the fog diminishes.

Perhaps some downwind downsloping areas in the E SE counties sees
a little bit of sunshine. But given the lingering cloud cover i
have kept our MAX temps on the lower side, colder that mos
guidance.

Tonight: aforementioned short-wave will dive down through northern
michigan late this afternoon through the evening hours. This will
drive the attending cold front down into eastern upper michigan by
early evening, and through northern lower michigan through the
course of the evening hours. Secondary cold front and push of
rather substantially colder air follows overnight into Friday.

System is moisture starved overall, particularly this evening with
passage of the initial front surface trough, with low level
saturated layers just getting into the neg 10c ice activation
temp regime. So, initial precip may end up more dz fzdz than
anything. Deeper moisture does rotate down into northern michigan
overnight ahead of the secondary front and will probably lead to
some light snow light accumulations overnight into Friday morning.

Short term (Friday through Saturday)
issued at 345 am edt Thu mar 21 2019
high impact weather potential: none.

Primary forecast concerns challenges: chances of lingering precip
early Friday.

Pattern synopsis forecast... A weak clipper system and upper level
trough along with synoptic moisture will be exiting east from
northern michigan while a large area of high pressure centered over
the northern great plains and associated dry air ridge all the way
to the gulf coast. Said high pressure will continue to build into
the great lakes through the remainder of the forecast period.

Behind said exiting clipper system, north-northwest winds filter in
cooler air... With highs only reaching into the upper 20s to low 30s.

Lingering moisture on the back side of this system and 850mb
temperatures of -12 to -14c will be enough to have some light lake
effect snow showers over portions of eastern upper and northwest
lower michigan... .As well as the lake huron shoreline of northeast
lower. Very light snow accumulations will occur under these snow
showers through the early part of Friday... Until the large area of
high pressure and much drier air takes hold of the great lakes
region and provides precipitation-free weather and mostly sunny
skies through at least Saturday. The tightening pressure gradient
between the exiting low pressure and building high pressure off to
our west will produce strong north-northwest winds Friday through
Friday evening... Before diminishing as the gradient relaxes as high
pressure becomes centered over the forecast area. Wind gusts of 25-
30 mph will be common across northern michigan... With the strongest
winds along the shorelines of lake michigan and lake huron. Winds
will become light and more westerly by Saturday morning. Light winds
and sunny skies will provide a much warmer day Saturday... With
temperatures moderating into the upper 30s to low 40s.

Long term (Saturday night through Wednesday)
issued at 345 am edt Thu mar 21 2019
high impact weather potential: none
widely varying temperatures with limited chances for precipitation
through the period. The great lakes and upper midwest will be
largely dominated by high pressure during the forecast period which
will limit pcpn chances into the beginning of next week. However,
there is a small chance for pcpn Sunday night, the result of a weak
boundary dropping south over the state. Mild temperatures are
expected through the weekend due to weak upper ridging, with a
return to colder temperatures early next week as mid lvl temps fall
back to -12c in a developing upper trough.

Aviation (for the 12z tafs through 12z Friday morning)
issued at 637 am edt Thu mar 21 2019
solid ifr cloud cover is draped across northern michigan along
with areas of locally dense fog. Vsbys will improve this morning
while CIGS increase to MVFR as we go through the day.

Another low pressure system will slide down through the region
tonight into Friday. This will bring another round of light
precipitation to the region and keep things on the MVFR side of
things through Friday morning.

Marine
Issued at 345 am edt Thu mar 21 2019
light winds waves in the early going of the forecast. Another area
of low pressure will drop down through northern michigan late this
afternoon and tonight. As the system departs, gusty northwesterly
winds develop later tonight and persist through the day Friday.

Plan to hoist a gale watch for parts of the lake michigan and lake
huron nearshore areas, with small craft advisories for the rest.

Apx watches warnings advisories
Mi... None.

Lh... Gale watch from late tonight through Friday evening for lhz348-
349.

Small craft advisory from 8 pm this evening to 4 am edt Saturday
for lhz345>347.

Lm... Small craft advisory from 8 pm this evening to 8 pm edt Friday
for lmz323-341-342.

Gale watch from late tonight through Friday evening for
lmz344>346.

Ls... None.

Near term... Ba
short term... Tl
long term... Tl
aviation... Ba
marine... Ba


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SBLM4 - Saginaw Bay Light #1, MI 37 mi63 min NNW 9.9 G 11 33°F 1012.2 hPa (-0.0)
GSLM4 - Gravelly Shoals Light MI 48 mi23 min NNW 6 G 7 33°F 1013.5 hPa
TAWM4 - Tawas City, MI 58 mi23 min N 2.9 G 5.1 34°F 1013.2 hPa

Wind History for Harbor Beach, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Jack Barstow Airport, MI17 mi67 minNNW 31.50 miFog/Mist35°F35°F100%1012.9 hPa

Wind History from IKW (wind in knots)
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Last 24hrS5S6S11SW9
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S8S6S5SE3SE5SE4CalmCalmCalmCalmCalmCalmNW3CalmNW3Calm
1 day agoCalmCalmSW4SW4SW3SW6
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SW6SW5SW5SW5SW3CalmCalmCalmS3S3S5CalmS3
2 days agoCalmCalmCalmCalmW4NW4W4W6SW4SW7W7W5SW6SW6W5CalmCalmCalmCalmCalmCalmCalmCalmCalm

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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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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Wind Forecast for Gaylord, MI (8,2,3,4)
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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.