Saturday, January16, 2021
Privacy Policy
L-36.com

Marine Weather and Tides
Harbor Springs, MI

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 8:14AMSunset 5:20PM Saturday January 16, 2021 3:35 AM EST (08:35 UTC) Moonrise 10:40AMMoonset 9:21PM Illumination 9% Phase: Waxing Crescent; Moon at 3 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
LMZ342 Norwood Mi To 5nm West Of Mackinac Bridge Including Little Traverse Bay- 956 Pm Est Fri Jan 15 2021
Overnight..Northeast wind 10 to 15 knots with gusts to around 20 knots. Patchy fog through the night. Drizzle after midnight. Snow and rain through the night. Waves 2 to 3 feet.
Saturday..North wind 10 to 15 knots with gusts to around 20 knots. Patchy fog. Chance of snow and drizzle. Waves 2 to 3 feet.
Saturday night..North wind 10 to 15 knots with gusts to around 20 knots. Chance of rain and snow showers. Waves 2 to 4 feet.
Sunday..North wind 10 to 15 knots. Mostly cloudy. Waves 2 to 3 feet. SEe the open lakes forecast for days 3 through 5.
LMZ342 Expires:202101161100;;983014 FZUS53 KAPX 160256 NSHAPX Nearshore Marine Forecast National Weather Service Gaylord MI 956 PM EST Fri Jan 15 2021 For waters within five nautical miles of shore on Lakes Huron... Michigan and Superior. 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. LMZ342-161100-


7 Day Forecast for Marine Location Near Harbor Springs, MI
   Hourly   EDIT   Help
location: 45.42, -84.99     debug


Area Discussion for - Gaylord, MI
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS63 KAPX 160445 AFDAPX

Area Forecast Discussion National Weather Service Gaylord MI 1145 PM EST Fri Jan 15 2021

UPDATE. Issued at 951 PM EST Fri Jan 15 2021

Main low pressure center has shifted east into Central Illinois late this evening . with a secondary low now poised over our SW CWA. Widespread precip continues across most of our CWA with some temporary breaks in the action occurring over NE Lower Michigan attm. A look at downstate radars shows a rather well-defined back edge of this precip shield just south of our CWA where the dry slot is encroaching across Southern Lower Michigan. This dry slot will pivot northward into SE sections of our CWA as we head into the overnight hours . resulting in diminishing POPs for areas near Saginaw Bay. Rest of our CWA will remain in likely to categorical POPs overnight as the deformation axis on the back side of the low center slides overhead as the low continues to slowly depart eastward.

Appears most precip has switched to mainly snow across our CWA . and any remaining rain will continue to transition to snow as low levels cool overnight Still. snow to liquid ratios will remain relatively low as low temps only cool to a degrees or two either side of 30. Expect another inch or two of new snow overnight . with highest amounts within the higher elevations of Northern Lower Michigan In coordination with GRR. will allow the ongoing Winter Wx Advisory expire on time at 11 pm . but will certainly continue to message the potential for slick road conditions thru the night and into Friday as light snow continues.

NEAR TERM. (Through Saturday) Issued at 345 PM EST Fri Jan 15 2021

. Light wintry mix of precipitation transitions to snow .

High impact weather potential: Pockets of slick travel expected with light snow accumulations.

Pattern synopsis and forecast:

Deep slow moving low pressure continues to pinwheel southeast into the western Ohio Valley region early this afternoon. Pockets of -divQ from DPVA and theta-e convergence continue to bow north into northern Michigan, resulting in periods of mostly light precipitation. Marginal temperatures through the boundary layer has resulted in a rain/snow mixture, with most of the snow confined to the higher elevations.

Mid/upper level low pressure will be a slow mover, gradually shifting east across the Ohio Valley tonight through Saturday. Surface reflection temporarily shifts north into northern Michigan tonight where better thermal gradient will reside . before shifting rapidly east later tonight into Saturday. Combination of the above will continue to bring periods of light snow and rain to the northwoods to start the weekend.

Primary forecast concerns/challenges:

Main focus on snow amounts through Saturday.

Details:

Bands of precipitation will continue to expand north tonight as surface low repositions itself across northern Michigan. Precipitation should transition to primarily snow as the boundary layer cools, although may see some drizzle at times, especially across our southeast counties as dry slot pivots north late. Deformation snows continue Saturday morning before steadily decaying during the afternoon, with perhaps just enough post-system cold air advection to kick off some lake snows in north-northwest flow areas later in the day. All told, given relatively transient pockets of already weak forcing and given what should be marginal snowfall rates and boundary temperatures, not expecting much more than one to three inches tonight through Saturday, with those highest totals centered in the elevated regions. Temperatures will remain mild, with lows tonight ranging from the upper 20s to lower 30s, and highs Saturday ranging through the 30s.

SHORT TERM. (Saturday night through Monday) Issued at 345 PM EST Fri Jan 15 2021

. Lingering Snow Showers then Light Lake Effect .

High impact weather: None is expected.

Primary forecast concerns/challenges: Pops through the period.

Troughing/associated moisture hangs back across northern Michigan to start the period as our low pressure system continues to crawl away to the east. This will likely lead to additional light snow showers Saturday night. Activity should then diminish on Sunday with perhaps some light northerly flow lake effect snow showers left in its wake. The light northerly flow lake effect then looks like it will hang on through the remainder of the short term forecast. Wind fields are rather light (mean 1000/850 mb winds <10 knots) so activity will likely hug the Lake Michigan shoreline including the Traverse City area. Accumulations should remain under an inch. Temperatures will cool off by a few degrees over what we have seen here recently but still remain a little above normal for mid-January.

LONG TERM. (Monday night through Friday) Issued at 345 PM EST Fri Jan 15 2021

. Some Snow Shower Chances .

High impact weather: Possible Accumulating Lake Effect Snow Mid-Week.

Moderately colder air looks like it will finally seep into the region during the early and middle parts of next week. Meanwhile, at least a pair of northern stream short waves will track by just to our north. Could still see some decent lake effect toward mid-week but there is uncertainty over how long we'll be able to sustain any specific wind flow regime (which could limit the time banding remains across one area). Temperatures through the period are expected to generally slip down toward normal to slightly above but likely pop up to a few degrees above normal on Thursday.

AVIATION. (For the 06Z TAFS through 06Z Saturday night) Issued at 1145 PM EST Fri Jan 15 2021

Low pressure centered over central Illinois will track eastward thru Indiana and Ohio overnight thru Saturday . reaching New England by late Saturday night. Widespread light snow will continue to impact much of Northern Lower Michigan overnight into Saturday thanks to deep moisture wrapping around the northern side of this strong system. Overall conditions will remain IFR for the next 24 hours. Widespread light snow will slowly diminish to scattered snow showers Saturday afternoon into Saturday night as deep moisture and lift begin to pull away from our area. Light and variable winds overnight will become NW by Saturday afternoon in the wake of the departing low.

MARINE. Issued at 345 PM EST Fri Jan 15 2021

Winds will gradually subside overnight as the low pressure drifts over northern Michigan. The low pressure drifts eastward Saturday and Saturday night, with winds looking to remain under advisory levels, while also turning more out of the north, then NW. Periods of light rain and snow expected to persist through Saturday.

APX WATCHES/WARNINGS/ADVISORIES. MI . WINTER WEATHER ADVISORY until 11 PM EST this evening for MIZ026>028-032>035. LH . NONE. LM . NONE. LS . NONE.

UPDATE . MR NEAR TERM . mb SHORT TERM . AS LONG TERM . AS AVIATION . MR MARINE . mb


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
MACM4 - 9075080 - Mackinaw City, MI 28 mi47 min NE 9.9 G 12 33°F 36°F999.3 hPa33°F
WSLM4 30 mi35 min N 15 32°F 33°F1000.9 hPa (-0.5)32°F
GTLM4 - Grand Traverse Light, MI 33 mi55 min E 4.1 G 6 39°F 1000.7 hPa

Wind History for Mackinaw City, MI
(wind in knots)    EDIT      (on/off)   Help
4
AM
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
Last
24hr
E17
E22
SE20
E17
E20
E20
G25
E20
E21
G26
E22
E19
G23
E20
E20
E19
G24
E17
G22
E15
G21
E15
G21
E14
G19
E13
G18
NE14
G17
NE15
NE14
G17
NE16
NE14
G17
NE8
1 day
ago
E3
E4
E6
S5
SE4
SE6
SE12
SE13
E14
E15
SE15
E15
E16
E16
E14
SE14
SE15
SE15
SE16
G20
E17
E21
SE19
G23
SE20
SE18
2 days
ago
SW5
G11
SW9
SW10
G15
SW10
SW9
G16
SW8
G15
W11
G15
W10
G15
W8
G16
NW9
G14
NW11
W5
G8
W4
G8
SW3
W1
SW2
SW7
SW7
G10
SW4
S2
--
S2
S1

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Harbor Springs, Harbor Springs Airport, MI4 mi40 minNNE 35.00 miUnknown Precip32°F32°F100%999.7 hPa
Pellston Regional Airport of Emmet County, MI15 mi41 minNNE 52.50 miLight Snow Fog/Mist34°F33°F97%1000.7 hPa
Charlevoix, Charlevoix Municipal Airport, MI17 mi40 minN 04.00 miLight Rain34°F34°F98%1000 hPa

Link to 5 minute data for KMGN

Wind History from MGN (wind in knots)
4
AM
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
PM
1
AM
2
AM
3
AM
Last 24hrE12
G17
E11
G17
E15E17
G23
E15E13
G20
E11
G15
E11
G16
E10
G17
E10NE12NE12NE12
G16
E12
G16
E12
G17
E10
G15
E7
G15
NE4NE5NE5CalmN4N4Calm
1 day agoCalmCalmNE4CalmNE3E4E7E9
G15
E10
G16
E9
G15
SE5SE7E9
G14
E8E9
G14
E8E10
G16
E12
G16
E10
G19
E12
G17
E10
G14
E9
G17
E9
G14
E8
2 days agoSW11
G17
SW10
G16
SW11
G16
SW10
G16
SW13
G18
SW9SW9
G14
SW10SW10
G16
W9
G16
W10
G14
W7W4W3N5N4CalmCalmCalmN3CalmCalmCalmNE3

Tide / Current Tables for
   EDIT   Weekend mode (on/off)   (on/off)   Help
Tide / Current Tables for
   EDIT      (on/off)   Help
Weather Map
       (on/off)   Help Weather Map
wmap_A
GEOS 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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Ground Weather Radar Station




Cookie Policy:
This website uses cookies to save your settings. No personal information is saved. I do not collect statistics on your visit. You can disable cookies in your browser if you like but it is not recommended for this site. I do not sell cookies. Go to a bakery for that. In fact I do not sell anything. To disable cookies from L-36.com, please refer to the Help button in your browser.
Privacy Policy:
I do not sell or share any user data or anything else for that matter. The only personal information I save is in the site log which has a line for each page view which includes the IP address your browser sends in the header as well as which page you requested. I use this to block hackers and other bad actors. I do not use this raw data to create profiles on users. I periodically delete the log files. Google supplies the ads on this site. Because I do not track who you are, I cannot customize how these ads are served. They may be personalized to improve the ad experience. If you do not want personalized ads, please adjust the settings on the Google site HERE. NOTE: The best I can determine, this site is not subject to CCPA but I am doing my best to comply anyway.
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 numerous 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.