Sunday, September24, 2017 L-36.com


Marine Weather and Tides
Mackinac Island, MI

Version 3.4
What's New / NOTES
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.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 7:26AMSunset 7:31PM Sunday September 24, 2017 4:46 AM EDT (08:46 UTC) Moonrise 10:54AMMoonset 9:10PM Illumination 14% Phase: Waxing Crescent; Moon at 4 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
    EDIT      (on/off)   Help
LHZ345 Straits Of Mackinac Within 5 Nm Of Mackinac Bridge Including Mackinac Island- 356 Am Edt Sun Sep 24 2017
Today..Southwest wind 5 to 10 knots. Patchy fog early in the morning. Waves 2 feet or less.
Tonight..Light winds. Mostly clear. Waves 2 feet or less.
Monday..Light winds. Sunny. Waves 2 feet or less.
Monday night..Light winds. Partly cloudy. Waves 2 feet or less. SEe the open lakes forecast for days 3 through 5.
LHZ345 Expires:201709241600;;848937 FZUS53 KAPX 240756 NSHAPX Nearshore Marine Forecast National Weather Service Gaylord MI 356 AM EDT Sun Sep 24 2017 For waters within five nautical miles of shore on Lakes Huron... Michigan and Superior LHZ345-241600-

7 Day Forecast for Marine Location Near Mackinac Island, MI
   Hourly   EDIT   Help
location: 45.86, -84.62     debug


Area Discussion for - Gaylord, MI
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus63 kapx 240648 cca
afdapx
area forecast discussion... Corrected
national weather service gaylord mi
248 am edt Sun sep 24 2017

Near term (today through tonight)
issued at 222 am edt Sun sep 24 2017

Another day of record-setting warmth...

high impact weather potential... None.

Pattern synopsis forecast... Large area of strong high pressure and
dry air remain over the great lakes region and the ohio valley
early this morning... With the pronounced upper level ridge axis
aligned within this same area. Extended period of unseasonably warm
temps and dry conditions continue across this entire region. Closest
convection remains well upstream along and just behind a persistent
inverted trough extending from texas thru the central plains to near
the arrowhead of minnesota. Dwpts depressions are shrinking...

resulting in the development of some patchy fog across our CWA early
this morning.

For today... Strong subsidence... Dry air thru the column and a rather
strong mid level cap will keep any chances of precip at bay today
and tonight. Latest SPC day 1 convective outlook agrees with this...

keeping general thunder west of our CWA closer to the inverted
trough.

Expect yet another hot lake september day... .With several locations
again matching or breaking MAX temp records today. Afternoon highs
will range from the upper 80s in eastern upper michigan to the lower
90s for most of northern lower michigan. Expect another muggy night
as temps drop into the low to mid 60s.

Records for today:
record (year)
glr 86 (2007)
tvc 89 (2007)
apn 89 (2007)
anj 88 (1892)
htl 86 (2007)
pln 87 (2007)

Short term (Monday through Tuesday)
issued at 222 am edt Sun sep 24 2017

Daily record high temperatures likely through Tuesday...

high impact weather potential: none.

Pattern forecast: little change in the large pattern is anticipated
through Monday as upper troughing remains anchored across the
intermountain west with ridging continuing to prevail over the
eastern two thirds of the country. However, large upper level closed
high pressure overhead late this weekend gradually shifts off to the
east throughout the day Monday... And more so Tuesday, allowing for
energy from the western trough to eject toward the great lakes. This
energy is expected to ultimately phase with another shortwave
sliding across southern canada Tuesday afternoon, bringing
substantial height falls into the great lakes region by midweek.

Primary forecast concerns challenges: remaining warm and somewhat
humid both Monday and Tuesday with several high temperatures records
expected to be broken once again. Tuesday would be the sixth
consecutive day of record highs in an impressive stretch of late
season warm weather that has consistently featured highs 20-30
degrees above normal.

Monday and Tuesday current records:
Monday Tuesday
anj: 83(1908) 84(1908)
glr: 76(1958) 80(1999)
htl: 91(1920) 89(1920)
tvc: 89(1908) 88(1908)
apn: 85(1935) 88(1920)
pln: 80(2007) 83(1973)
an increasing shower storm threat arrives midweek as an approaching
cold front is set to slide across northern michigan. As was alluded
to by the prior shift, question marks revolve around exact timing of
the front, increased cloud cover, and the period of greatest
potential for any precip. Current trends continue to suggest the
aforementioned cold front doesn't arrive to northern michigan until
Tuesday evening at the earliest; however, developing convection
across wisconsin and the western u.P. May reach eastern upper and
far northwest lower in isolated fashion by late Tuesday afternoon.

At the very least, increased cloud cover seems likely west of us-
131.

Long term (Tuesday night through Saturday)
issued at 222 am edt Sun sep 24 2017
high impact weather potential: minimal.

Late Tuesday's cold front mentioned above continues to progress
eastward across northern michigan right through Wednesday morning.

Not impressed with recent trends regarding shower coverage Tuesday
night Wednesday morning as northern michigan lies in poor
location relative to the upper level jet, the best support remains
focused across southern ontario and deep layer moisture axis
ahead of the front diminishes with time. The main story will
certainly revolve around much cooler temperatures prevailing
Wednesday right on through the weekend with the coolest days
expected to be Friday- Saturday as a reinforcing shot of cool air
aloft results in high temperatures struggling to reach the mid-
upper 50s. The combination of mid level waves passing through the
northern tier of the CONUS and lake processes beginning to ramp up
locally yields the possibility of showery periods late this week
into next weekend.

Aviation (for the 06z tafs through 06z Sunday night)
issued at 1152 pm edt Sat sep 23 2017
solidVFR conditions anticipated tonight through Sunday night. A
little bit of fog mist out there... Primarily at mbl and pln. Light
winds tonight... S SW under 10 knots on Sunday.

Marine
Issued at 222 am edt Sun sep 24 2017
winds and waves will remain below SCA criteria today thru Monday
night as high pressure holds overhead. Mainly dry wx and
unseasonably warm temps are expected across our entire region thru
Monday night.

Apx watches warnings advisories
Mi... None.

Lh... None.

Lm... None.

Ls... None.

Near term... Mr
short term... Mg
long term... Mg
aviation... Ba
marine... Mr


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
45175 8 mi27 min ESE 3.9 G 3.9 68°F 67°F1019 hPa
MACM4 - 9075080 - Mackinaw City, MI 8 mi47 min SSE 1.9 G 1.9 66°F 1018 hPa (+0.3)59°F
SRLM4 26 mi47 min SSE 6 72°F 69°F65°F
RCKM4 - 9076024 - Rock Cut, MI 36 mi47 min Calm G 0 1017.8 hPa (+0.6)
WNEM4 - 9076027 - West Neebish, MI 37 mi47 min Calm G 1.9 64°F 1018.6 hPa (+0.7)62°F
DTLM4 - 9075099 - De Tour Village, MI 39 mi47 min SSW 4.1 G 5.1 69°F 1017.9 hPa (+0.0)69°F
45022 40 mi27 min ESE 5.8 G 5.8 69°F 68°F1 ft1020.2 hPa69°F
PTIM4 - 9099004 - Point Iroquois, MI 43 mi47 min ESE 5.1 G 6 65°F 1018.1 hPa (+1.0)63°F
SWPM4 - 9076070 - S.W. Pier, MI 46 mi47 min E 2.9 G 2.9 65°F 1018.6 hPa (+0.7)
NABM4 - Naubinway, MI 46 mi44 min E 1 G 4.1 65°F 1017.9 hPa
LTRM4 - 9076032 - Little Rapids, MI 46 mi47 min Calm G 1.9 63°F 1018.6 hPa (+0.7)55°F

Wind History for Mackinaw City, MI
(wind in knots)    EDIT      (on/off)   Help
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
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
Last
24hr
SW7
SW11
SW10
G14
SW11
G15
SW10
W11
G15
W10
G15
W11
G15
W11
G14
W8
G14
W7
G12
SW11
SW11
G17
SW7
G11
SW6
SW4
--
SW4
S1
--
S1
SW1
S1
S2
1 day
ago
SE4
SE3
SE4
SE3
NE4
E6
NE4
NE6
NE4
NE4
NE3
N5
W20
G29
W8
G11
S6
SW10
E9
SE7
NE5
S8
NE5
E5
SE8
SE6
2 days
ago
N5
SE9
G13
S6
SW10
SW9
N3
NE3
E5
E3
E3
NE3
NE4
SE11
SE12
SE12
SE9
E6
SE4
SE2
E4
SE5
SE5
SE4
SE4

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Mackinac Island Airport, MI1 mi71 minS 77.00 miFair68°F66°F95%1019 hPa
Cheboygan, Cheboygan County Airport, MI15 mi53 minN 07.00 miFair61°F60°F98%1018.6 hPa
Pellston Regional Airport of Emmet County, MI22 mi53 minN 03.00 miFog/Mist59°F59°F100%1019 hPa

Wind History from MCD (wind in knots)
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
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
Last 24hrS7S11S10S11
G15
SW3SW5W5W11SW10
G16
SW9
G14
SW8SW7SW6W6SW5SW6S7SW5SW5W4W5W6S3S6
1 day agoSE7S7S9S8S6S5CalmCalmW4W4SW3W5NW13
G25
W3S10NE5SE7SE8SE12SE5E6SE7S10S9
G15
2 days agoE7SE9
G20
S7S6S6NE5NE4NE3NE3E4E5E5E8E7SE7SE6SE5E4E5E5E5E4SE4SE4

Tide / Current Tables for
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help
Tide / Current Tables for
   EDIT      (on/off)   Help
Weather Map and Satellite Images
       (on/off)   Help
Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of GreatLakes    EDIT
Geos

Wind Forecast for Gaylord, MI (4,6,7,8)
      (on/off)   Help

Ground Weather Radar Station Gaylord, MI
   (on/off)   Help
weather_mapweather_map weather_map

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.