Saturday, December14, 2019
Privacy Policy
L-36.com


Marine Weather and Tides
Alpena, MI

Version 3.4
NOTICE
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:59AMSunset 5:00PM Saturday December 14, 2019 11:37 PM EST (04:37 UTC) Moonrise 7:26PMMoonset 10:20AM Illumination 88% Phase: Waning Gibbous; Moon at 18 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
LHZ348 Presque Isle Light To Sturgeon Pt Mi Including Thunder Bay National Marine Sanctuary- 1008 Pm Est Sat Dec 14 2019
.small craft advisory in effect through Sunday afternoon...
Overnight..Northwest wind 15 to 25 knots with a few gales gusts to around 35 knots. Isolated snow showers after midnight. Waves 4 to 6 feet building to 4 to 7 feet after midnight. Waves occasionally around 9 feet.
Sunday..Northwest wind 15 to 25 knots with gusts to around 30 knots. Isolated snow showers. Waves 4 to 7 feet.
Sunday night..West wind 10 to 15 knots with gusts to around 20 knots. Mostly cloudy. Waves 2 feet or less.
Monday..Southwest wind 10 to 15 knots with gusts to around 20 knots. Partly Sunny. Waves 2 feet or less. SEe the open lakes forecast for days 3 through 5.
LHZ348 Expires:201912151115;;800653 FZUS53 KAPX 150308 NSHAPX Nearshore Marine Forecast National Weather Service Gaylord MI 1008 PM EST Sat Dec 14 2019 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. LHZ348-151115-


7 Day Forecast for Marine Location Near Alpena, MI
   Hourly   EDIT   Help
location: 45.07, -83.44     debug


Area Discussion for - Gaylord, MI
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS63 KAPX 150306 AFDAPX

Area Forecast Discussion National Weather Service Gaylord MI 1006 PM EST Sat Dec 14 2019

UPDATE. Issued at 956 PM EST Sat Dec 14 2019

Area of light mixed precipitation which resulted in some slick spots on area roads has generally exited the region late this evening as mid level wave pushes east. In its wake, increasingly colder air will turn on the lake effect machine overnight into the day on Sunday. Forecast soundings not very impressive for lake effect with sub 5k inversion heights and <40% RH in the H10-H8 layer. This will keep the lake effect in check, with a few localized 1-3" amounts possible in northwest flow favored areas. Lake effect snow showers will drift eastward on Sunday as low level winds back more westerly.

Other than the light lake effect, just cold temperatures and gusty winds. Wind chills likely in the single digits later tonight into Sunday morning. Winds gusting 20+ mph at times, especially closer to the coasts.

UPDATE Issued at 604 PM EST Sat Dec 14 2019

Upper/thermal trough beginning to swing into the area early this evening. Cold air advection will ramp up quickly over the next few hours and winds will becoming gusty from the northwest with tightening gradient. Area of light freezing drizzle/light snow helping to usher in the colder air causing some slick roads. Everything will transition to light snow this evening as temperatures aloft fall. More pure lake effect setting up late tonight into Sunday with the loss of synoptic moisture. Not looking like a big deal with minimal moisture, but a few areas could see an inch or two.

NEAR TERM. (Through Tonight) Issued at 355 PM EST Sat Dec 14 2019

Impactful weather: Areas of drizzle and freezing drizzle changing to light lake effect snow showers tonight, with minimal accumulations.

Pattern synopsis and forecast:

Forecast soundings continue to show moisture only reaching to around -6C through the afternoon, before an upper level trough moves through the forecast area and begins cooling the atmosphere. Three will be some chances of freezing drizzle due to no ice present, but have not seen any observations of such as of yet. Once the upper level trough begins CAA and cools the atmospheric column we introduce ice . any precipitation will then turn to all snow. With 850mb temperatures -8C around 00Z and lake temperatures on average 5C, lake effect snow will begin. 850mb temperatures will continue to cool . to around -15C and inversion heights raise to about 6kft overnight, this may increase intensity of the lake effect snow . but not looking at too much accumulations . maybe around 1-2 inches for the favored northwest flow regime snowbelt areas by Sunday morning due to the better synoptic moisture departing to the northeast. Winds will continue to pick up in intensity throughout the day today and become gusty, with some gusts of 20-25 mph (higher near the Great Lakes shorelines), as the pressure gradient continues to tighten behind a departing weak surface low pressure system. Temperatures will continue to drop throughout the rest of the afternoon as CAA continues . currently around 31-33F and will drop to the teens overnight.

SHORT TERM. (Sunday through Tuesday) Issued at 355 PM EST Sat Dec 14 2019

. Turning cooler with minor lake effect snow .

High Impact Weather Potential: Minimal. Minor accumulating snow in the snowbelts.

Pattern Synopsis/Forecast: Todays composite analysis reveals larger scale troughing across the CONUS with a strong southern stream jet from off the Pacific, crossing the central/southern states into a sharper short-wave trough over the SE CONUS and off the coast. Weaker northern stream jet energy is across central Canada with one short-wave swinging across Ontario. Second piece of short-wave energy is sliding down through Alberta and Saskatchewan. Strong coastal low pressure system is running up the east coast with broad cyclonic flow back through the western lakes, while high pressure is building through the northern Plains.

Weather through the short-term will be rather non-descript across the Plains and northern Great Lakes with the main storm track remaining to our south and east. Aforementioned northern stream short-wave energy will swing through the northern lakes tonight into Sunday bringing colder air back into the region and the redevelopment of minor lake effect snows for tonight through Sunday night. Another fairly strong storm system will emerge out of Texas and slide northeastward through the Tennessee/Ohio River Valleys and off the coast Monday into Tuesday. Guidance trends continue to suppress this system southward with with minimal impact to northern Michigan.

Primary Forecast Concerns/Challenges: None really. Light lake effect snow accumulations anticipated in some of the snowbelts through the short term.

Details: Strong coastal low is expected to be into Quebec by Sunday morning with high pressure building through the Midwest and western Great Lakes. In between these two systems, expect NW flow lake effect snow showers to be ongoing Sunday morning. Modest lake effect conditions anticipated with lake induced CAPE values running 300 to 400 J/KG through the morning . probably enough to produce around an inch of accumulation where snow showers are most persistent. Moving through the afternoon and Sunday night, surface high pressure is expected to stretch out through the lower lakes region. Backing low level flow, warming temps, subsidence and further drying will gradually diminish lake effect snow showers while becoming more focused through the tip of the mitt.

Monday into Tuesday . weather remains non-descript and more or less seasonable as the aforementioned stronger storm system rides eastward through the Ohio and Tennessee Valleys spreading some snow into far southern Lower Michigan. Weak northern stream wave runs through Ontario with a boundary eventually sagging back into the northern lakes. Nothing anticipated with the front. But, cooler air and veering low level flow will eventually push some light lake effect snow showers back into eastern Upper Michigan. Again with minor accumulations.

LONG TERM. (Tuesday night through Saturday) Issued at 355 PM EST Sat Dec 14 2019

High Impact Weather Potential: Minimal. Shot of fairly cold air mid week.

Stretch of generally low impact weather continues through the balance of the week and into next weekend. One more northern stream wave will be dropping out of Canada into the Great Lakes late Tuesday through Wednesday bringing one more core of cold air (-20C and colder) for midweek producing high temperatures largely in the teens and low wind chill readings. Some accumulating lake effect snow in the snowbelts of course. Decent instability over the lakes but it is a little to soon to talk about snow amounts.

After that, just like our last cold shot, it's short lived with larger scale ridging/warmer air expected to build eastward out of the Plains and into the Great Lakes for the rest of the week, along with no significant weather.

AVIATION. (For the 00Z TAFS through 00Z Sunday evening) Issued at 604 PM EST Sat Dec 14 2019

Colder air associated with an upper trough will sweep into northern Michigan tonight. Areas of light freezing drizzle/light snow will initially usher in the colder air, with everything transitioning to scattered light snow showers. Cigs generally MVFR, with a period of IFR cigs possible early this evening before the colder air sets in.

The pressure gradient will tighten tonight and winds will become gusty from the northwest at 15-25kts. These gusty winds will continue into Sunday morning before diminishing. Lingering snow shower activity Sunday morning as well. Cigs bouncing between VFR and MVFR on Sunday around the localized lake effect snow shower activity.

MARINE. Issued at 255 AM EST Sat Dec 14 2019

Weak low pressure and a cold front will cross the region today, resulting in some potential spotty drizzle, in weak winds. Cold advection sets in tonight, with the pressure gradient tightening, and NW winds ramping up into advisory speeds and continuing into Sunday. Winds back around more southerly later Sunday through Sunday night, and weaken, as higher pressure arrives.

APX WATCHES/WARNINGS/ADVISORIES. MI . NONE. LH . SMALL CRAFT ADVISORY until 3 PM EST Sunday for LHZ347>349. SMALL CRAFT ADVISORY until 5 AM EST Sunday for LHZ345-346. LM . SMALL CRAFT ADVISORY until 11 AM EST Sunday for LMZ323-342- 344>346. SMALL CRAFT ADVISORY until 5 AM EST Sunday for LMZ341. LS . SMALL CRAFT ADVISORY until 5 AM EST Sunday for LSZ322. SMALL CRAFT ADVISORY until 11 AM EST Sunday for LSZ321.

UPDATE . JK NEAR TERM . TL SHORT TERM . BA LONG TERM . BA AVIATION . JK MARINE . TL


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
APNM4 - Alpena Harbor Light, MI 1 mi28 min NW 8 G 12 29°F
LPNM4 - Alpena, MI - 9075065 1 mi56 min NNW 13 G 19 29°F 1001.5 hPa22°F
TBIM4 13 mi48 min WNW 8.9 G 16 30°F

Wind History for Alpena, MI
(wind in knots)    EDIT      (on/off)   Help
12
AM
1
AM
2
AM
3
AM
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
Last
24hr
S5
S3
SW1
N1
N1
N2
N3
N2
NW2
N3
N7
G10
N5
G9
N7
G11
N6
NW8
G13
N10
G16
N11
G15
NW8
G11
NW7
G13
NW8
G13
NW11
G15
NW10
G16
N10
G18
NW11
G15
1 day
ago
S4
G8
SW7
G10
SW4
G7
SW4
SW4
G7
SW3
SW3
SW3
S4
S3
S6
S4
S4
SE4
G7
S6
S6
S5
S9
S6
G9
S4
S4
SW1
S3
2 days
ago
W2
W3
W4
G7
W5
G8
W3
SW4
SW2
SW3
SW4
SW4
SW8
G11
SW8
G13
S9
G13
S14
G17
S17
G22
S23
S14
G20
S11
G15
S10
G14
S9
SW7
G17
SW7
G11
SW6
G12
SW5

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Alpena, Alpena County Regional Airport, MI7 mi44 minWNW 8 G 1610.00 miOvercast29°F21°F75%1002.8 hPa

Link to 5 minute data for KAPN

Wind History from APN (wind in knots)
12
AM
1
AM
2
AM
3
AM
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
Last 24hrCalmCalmCalmCalmCalmW4CalmCalmW3CalmNW5NW7NW9W7NW9
G17
NW9NW5W6NW8NW8
G15
NW7
G15
W7
G20
4
G18
NW8
G16
1 day agoS6S6S6S7S6S7S6S5S7S8S5S6S5SE3SE5E4SE3SE3SE4SE5S5S4S4Calm
2 days agoSW5SW6SW6SW6SW3S4SW3SW7SW4S4S7S8SE8SE7SE11SE13
G21
S13SE8SE6SE5S11S8S7S4

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
Wind Forecast for Gaylord, MI (23,6,7,8)
      (on/off)   Help

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

Ad by Google

Cookie Policy:
This webiste uses cookies to save your settings. No personal information is saved. 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. I do not keep site logs longer than I need to to keep bad actors off the site. Basically, I delete them after looking at them. If you are subject to CCPA, Google ads on this site will not be based on your past behavior so you will likely not see an ad for a lawn mower just because you looked for one at a big box website. I do not believe this site is subject to CCPA but I am doing what I can to follow the guidelines 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 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.