Wednesday, April25, 2018 L-36.com


Marine Weather and Tides
Harrisville, 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 6:20AMSunset 8:23PM Wednesday April 25, 2018 2:42 AM EDT (06:42 UTC) Moonrise 2:40PMMoonset 3:37AM Illumination 75% Phase: Waxing Gibbous; Moon at 10 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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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- 1002 Pm Edt Tue Apr 24 2018
Rest of tonight..North winds 5 to 10 knots backing to the west after midnight...then becoming northwest 10 to 15 knots early in the morning. Showers likely. Waves 2 feet or less building to 3 to 5 feet after midnight.
Wednesday..North winds 15 to 20 knots. A chance of showers until late afternoon. Waves 5 to 7 feet. Waves occasionally around 10 feet.
Wednesday night..Northwest winds 10 to 15 knots. Waves 3 to 5 feet.
Thursday..Northwest winds 5 to 10 knots early in the morning becoming light and variable. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late morning and afternoon.
Thursday night..South winds 5 to 10 knots. Waves 2 feet or less.
Friday..South winds 5 to 10 knots veering to the northwest. A chance of showers early in the morning. Waves 2 feet or less.
Saturday..West winds 5 to 10 knots becoming northwest 10 to 15 knots. Waves 1 to 3 feet building to 3 to 5 feet until early morning.
Sunday..Northwest winds 10 to 15 knots becoming west 5 to 10 knots until early evening...then backing to the south in the late evening and early morning. Waves 2 to 4 feet subsiding to 1 to 3 feet until early morning.
LHZ362 Expires:201804250815;;454704 FZUS63 KDTX 250202 GLFLH Open Lake Forecast for Lake Huron National Weather Service Detroit/Pontiac MI 1002 PM EDT Tue Apr 24 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...Weak low pressure, 30.00 inches, will gradually exit the region this evening. High pressure, 30.10 inches, will build over the waters on Thursday. LHZ362-363-250815-

7 Day Forecast for Marine Location Near Harrisville, MI
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location: 44.99, -82.16     debug


Area Discussion for - Gaylord, MI
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Fxus63 kapx 250335
afdapx
area forecast discussion
national weather service gaylord mi
1135 pm edt Tue apr 24 2018

Update
Issued at 1000 pm edt Tue apr 24 2018
showers continue this evening, most widespread across northeast
lower michigan where moisture and low level convergence is
maximized. Expect this area of rain to rotate slowly east, with
additional much more scattered showers to rotate overhead via
arrival of secondary area of upper level support. Definitely not
much rain as best moisture axis rotates east. May even see some
clearing later tonight, although hi-res guidance and evening rains
both suggest growing area of lower clouds towards sunrise,
especially across north central and northeast lower michigan.

Near term (tonight through Wednesday)
issued at 321 pm edt Tue apr 24 2018

Rain chances end tonight...

high impact weather potential... None
pattern synopsis forecast... A narrow band of moisture starved air
directly behind a cold front associated with a weak area of low
pressure over the great lakes region will diminish cloud cover
from northwest to southeast throughout the rest of the evening and
into the early nighttime hours. Rain chances mainly south of a
line extending from alpena to cadillac continue, but will also end
throughout the evening hours as it continues it's march towards
the east. An associated upper level low with accompanying deeper
moisture behind said system will once again cloud the skies and
possibly produce some drizzle (according to forecast soundings)
over northern lower by sunrise and then dissipate throughout
Wednesday as high pressure ridges into the forecast area from the
upper midwest. High temperatures Wednesday afternoon will be in
the upper 40s.

Short term (Wednesday night through Friday)
issued at 321 pm edt Tue apr 24 2018

Wednesday night through Friday
Warmer then cooler...

primary forecast concern... Pops late Thursday night into early Friday.

It looks like a roller coaster ride as far as temperatures go over
the next several days which is fairly typical of this time of the
year. This is mostly good news as far as ridding ourselves of the
highly unusual late april snowpack in the higher terrain. As far
as the details go, high pressure will lead to precipitation free
conditions Wednesday night into Thursday so after a chilly night
daytime highs should be warmer once again. A short wave and
associated surface cold front then swing through later Thursday
night into early Friday bringing small chances for showers as well
as cooler temperatures. Lows Wednesday night in the 20s to lower
30s. Highs Thursday ranging from the middle 50s to lower 60s. Lows
Thursday night mainly in the 30s with highs Friday only in the
middle 40s to lower 50s.

Long term (Friday night through Tuesday)
issued at 321 pm edt Tue apr 24 2018
the extended period will begin with precip pulling out of the
area. Blended solutions bring dry air in pretty rapidly... But i'm
thinking some wrap around moisture... Along with a bit of a north
flow lake contribution might cause moisture to lag a bit into
Saturday... At least in the form of low level cloud cover. That
said... Transient high pressure will move across the region through
the second half of the weekend and into the new work week.

Temperatures will moderate rapidly from Saturday to Monday... With
the warmest air of the year on the schedule for Monday and
Tuesday.

Aviation (for the 06z tafs through 06z Wednesday night)
issued at 1132 pm edt Tue apr 24 2018
high based showers will come to a gradual end early this morning.

Secondary band of moisture will swing south, perhaps bringing a
round of MVFR CIGS by sunrise, especially across kapn. Clouds
expected to gradually mix out later this morning, with skies
becoming mostly sunny clear this afternoon and evening. North to
northwest winds expected, at times a bit gusty, through this
afternoon. Winds become light this evening.

Marine
Issued at 321 pm edt Tue apr 24 2018
as high pressure starts to work in from the northwest, north to
northeasterly winds will increase this into tonight. Advisory-
level winds waves are expected in some zones over lake michigan
tonight and then lake huron by morning Wednesday and last
throughout the day. Rain chances will remain over lake huron
through tonight.

Apx watches warnings advisories
Mi... None.

Lh... Small craft advisory from 6 am to 6 pm edt Wednesday for lhz348-
349.

Lm... Small craft advisory until noon edt Wednesday for lmz323-342-
344>346.

Ls... None.

Update... mb
near term... Tl
short term... As
long term... Kb
aviation... mb
marine... Tl


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LPNM4 - Alpena, MI - 9075065 67 mi42 min NNW 4.1 G 5.1 41°F 1016.1 hPa (+0.0)36°F
APNM4 - Alpena Harbor Light, MI 67 mi32 min NNW 8 G 9.9 41°F

Wind History for Alpena, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Oscoda, Oscoda-Wurtsmith Airport, MI75 mi47 minN 810.00 miLight Rain44°F41°F90%1015.9 hPa

Wind History from OSC (wind in knots)
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Last 24hrW4CalmCalmCalmCalmCalmCalmCalmCalmW5CalmNE4E4E4CalmCalmE3E3CalmCalmCalmCalmN4N5
1 day agoCalmCalmCalmNW3CalmCalmCalmE5E5E5E6E5E6E6NE5NE9NE6NE4NE4N3CalmCalmCalmCalm
2 days agoCalmCalmCalmCalmCalmCalmCalmE4E3E4SE5E7E5E4E5E4E3E3NE3CalmCalmCalmCalmCalm

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 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.
target = "new">Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Gaylord, MI (2,6,7,8)
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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.