Monday, March25, 2019 L-36.com


Marine Weather and Tides
Harrisville, 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 7:16AMSunset 7:43PM Monday March 25, 2019 2:24 AM EDT (06:24 UTC) Moonrise 12:00AMMoonset 9:18AM Illumination 81% Phase: Waning Gibbous; Moon at 19 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- 931 Pm Edt Sun Mar 24 2019
Rest of tonight..North winds 10 to 15 knots. Waves 3 to 5 feet.
Monday..North winds 10 to 15 knots backing to the northwest early in the afternoon...then increasing to 15 to 20 knots late in the afternoon. Waves 2 to 4 feet building to 5 to 7 feet late in the afternoon. Waves occasionally around 10 feet.
Monday night..Northwest winds 15 to 20 knots with gusts to around 30 knots decreasing to 10 to 15 knots after midnight. Waves 5 to 7 feet. Waves occasionally around 10 feet.
Tuesday..Northwest winds 5 to 10 knots early in the morning becoming light and variable. Waves 3 to 5 feet subsiding to 1 to 3 feet in the late morning and afternoon.
Tuesday night..South winds 5 to 10 knots increasing to 10 to 15 knots in the late evening and overnight. Waves 1 to 3 feet building to 2 to 4 feet after midnight.
Wednesday..South winds 10 to 15 knots increasing to 15 to 20 knots late in the afternoon. A chance of rain and snow late in the afternoon. Waves 3 to 5 feet building to 5 to 7 feet late in the evening. Waves occasionally around 10 feet.
Thursday..Southwest winds 15 to 20 knots decreasing to 10 to 15 knots until early evening...then veering to the northwest in the late evening and early morning. A chance of rain. Waves 4 to 6 feet. Waves occasionally around 8 feet.
Friday..North winds 5 to 10 knots until afternoon becoming light and variable...then becoming northeast 5 to 10 knots in the late evening and early morning. A chance of rain and snow in the late evening and early morning. Waves 2 to 4 feet subsiding to 1 to 3 feet.
LHZ362 Expires:201903250815;;872858 FZUS63 KDTX 250131 GLFLH Open Lake Forecast for Lake Huron National Weather Service Detroit/Pontiac MI 931 PM EDT Sun Mar 24 2019 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 will continue to move towards the western Great Lakes through Monday at 30.40 inches. This high will drive a cold front, 30.10 inches, across Lake Huron this afternoon on its way to the Ohio Valley tonight. The high pressure will remain over the Great Lakes region through Tuesday before departing to the east on Wednesday. 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 250526
afdapx
area forecast discussion
national weather service gaylord mi
126 am edt Mon mar 25 2019

Near term (tonight)
issued at 125 am edt Mon mar 25 2019
high impact weather: none.

Pattern synopsis and forecast:
all quiet out there early this morning. A shortwave was rounding
larger upper troughing that resided over eastern canada and the ne
conus, passing by a frontal boundary that has sunk well south of nrn
michigan. The last vestiges of lower level clouds have departed the
srn-most cwa, while much drier air (pwats lowering to less than
0.15") has swept into the region and brought about clear skies.

Temperatures were slow to fall despite the dry air clear skies, due
to northerly winds at generally 5-10 mph. Readings were still in the
upper teens to as warm as the upper 20s near saginaw bay.

Very quiet weather today and tonight. The dry air of generally less
than 0.15" pwat holds strong over all of NRN michigan, while strong
sfc high pressure settles into NRN michigan by late tonight. There
is an expectation of very little, if any, clouds around over this
time. Winds do go light and variable near calm by daybreak Tuesday,
after maybe a touch of gustiness out of the NW this afternoon and
evening. Can see low temperatures dropping into the single digits
and teens across most of the area. Highs today will be in the mid to
upper 30s most areas.

Short term (Tuesday through Wednesday)
issued at 125 am edt Mon mar 25 2019
high impact weather potential: none.

Pattern synopsis forecast: surface high pressure will gradually
become situated squarely overhead Monday through early Tuesday
before slowly sliding east into Tuesday night. Broad upper-level
ridging will be evident upstream by early Tuesday, which is progged
to gradually shift eastward through Wednesday before breaking down
as several pieces of mid-level energy trek through the plains
midwest great lakes Wednesday night through the end of the week...

ultimately renewing precipitation chances locally.

Primary forecast concerns challenges: moderating temperatures. Low
pops Wednesday afternoon.

Little in the way of sensible weather is expected Tuesday through
much of Wednesday as aforementioned high pressure remains the
dominant weather feature. Lots of sunshine, light winds and
gradually moderating temperatures are expected to be the rule. High
temperatures Tuesday expected to range from the upper 30s to low 40s
across all of northern michigan.

High pressure slowly drifts off to the east Tuesday night allowing
southerly return flow to ramp up during the day Wednesday. This will
only aid in amplifying the warming trend as high temps surge to the
mid 40s across the eastern upper and to the upper 40s-low 50s
elsewhere. Initial piece of shortwave energy will approach the
northern half of the forecast area from the northwest Wednesday
afternoon, perhaps aiding to bring a few scattered showers across
eastern upper, but the majority of the area will see little more
than a bit of increased cloud cover from this wave.

Long term (Wednesday night through Sunday)
issued at 125 am edt Mon mar 25 2019
high impact weather potential: minimal.

Moisture will continue to be on the increase late in the week ahead
of a front draped from the upper great lakes southwestward into the
plains. A few weak disorganized areas of low pressure expected to
trek along this front through the end of the week with primarily
scattered rain showers anticipated for Thursday, perhaps
transitioning to scattered snow showers Friday Saturday as
temperatures cool behind the passing frontal boundary late in the
week.

Aviation (for the 06z tafs through 06z Monday night)
issued at 125 am edt Mon mar 25 2019
very dry air continues to sink into NRN michigan, which will hold
through Monday night, as strong sfc high pressure settles in by
daybreak Tuesday. There is an expectation for very little, if any,
clouds around this TAF period. Maybe a touch of gustiness out of the
nw this afternoon early this evening, otherwise winds going near
calm late Monday night.

Marine
Issued at 125 am edt Mon mar 25 2019
very dry air has been sinking into NRN michigan, which will hold
through Tuesday night. Strong sfc high pressure settles into the
region by daybreak Tuesday, then departs to the atlantic coast by
Tuesday night. There is an expectation for very little, if any,
clouds around over this time period, until Tuesday night when some
higher clouds arrive. No precipitation expected. Gusty NW winds this
afternoon evening will bring some low end advisory speeds to nrn
lake huron, whitefish bay, and the st. Mary's. Winds weaken
overnight Monday night, then switch around out of the SW Tuesday,
increasing Tuesday night in a tightening pressure gradient. However,
not expecting any advisory speeds attm.

Apx watches warnings advisories
Mi... None.

Lh... Small craft advisory from noon today to 1 am edt Tuesday for
lhz346>348.

Lm... Small craft advisory until 6 am edt early this morning for
lmz344>346.

Ls... Small craft advisory from noon today to 1 am edt Tuesday for
lsz321-322.

Near term... Smd
short term... Mg
long term... Mg
aviation... Smd
marine... Smd


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
APNM4 - Alpena Harbor Light, MI 67 mi25 min NNW 8 G 9.9 26°F
LPNM4 - Alpena, MI - 9075065 67 mi37 min N 8 G 11 1024.1 hPa

Wind History for Alpena, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Oscoda, Oscoda-Wurtsmith Airport, MI75 mi29 minN 510.00 miFair26°F19°F77%1023.4 hPa

Wind History from OSC (wind in knots)
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Last 24hrSW9SW8SW7SW6SW5SW6SW7SW5W4NW4NE16
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1 day agoNW4NW5NW4NW3CalmCalmNW3NW4W5W7SW9W9W12W9W11
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2 days agoW5NW9NW11
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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.
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.