Sunday, September24, 2017 L-36.com


Marine Weather and Tides
Harbor Beach, 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 7:18AMSunset 7:23PM Sunday September 24, 2017 4:45 AM EDT (08:45 UTC) Moonrise 10:41AMMoonset 9:06PM 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
LHZ441 Port Austin To Harbor Beach Mi- 355 Am Edt Sun Sep 24 2017
Today..South winds 5 to 10 knots. Sunny. Waves around 2 feet or less.
Tonight..South winds 5 to 10 knots. Clear. Waves around 2 feet or less.
Monday..South winds 5 to 10 knots early in the morning becoming light and variable...then becoming southeast 5 to 10 knots in the afternoon. Mostly Sunny. Waves around 2 feet or less.
Monday night..South winds 5 to 10 knots. Mostly clear. Waves around 2 feet or less. SEe lake huron open lake forecast for days 3 through 5.
LHZ441 Expires:201709241515;;848930 FZUS53 KDTX 240755 NSHDTX Nearshore Marine Forecast for Michigan National Weather Service Detroit/Pontiac MI 355 AM EDT Sun Sep 24 2017 For waters within five nautical miles of shore 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. LHZ441-241515-

7 Day Forecast for Marine Location Near Harbor Beach, MI
   Hourly   EDIT   Help
location: 43.84, -82.65     debug


Area Discussion for - Detroit/Pontiac, MI
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus63 kdtx 240745
afddtx
area forecast discussion
national weather service detroit pontiac mi
345 am edt Sun sep 24 2017

Discussion
Today will likely be the fourth consecutive day of record high
temperatures at flint and saginaw(mbs), and detroit also has a
chance to break the record of 89 set way back in 1891. The records
for flint and saginaw are 89 2007 and 90 2007 respectively.

The record early fall heat has been driven by a strongly amplified
and stable upper air pattern over north america that is producing a
591 dm ridge at 500 mb directly over lower michigan. Satellite
imagery and model analysis fields indicate the core of the ridge is
still in place during the early morning but simulations show with
good agreement that it will drift eastward through the day. This
will still result in widespread high temperatures in the lower 90s
but likely not as many mid 90s readings compared to the last couple
of days. A light southeast wind will also return to shoreline areas
and into the detroit metro area from lake erie as the surface high
follows the upper ridge slightly eastward. Mid afternoon onset of
this flow pattern was effective at preventing both dtw and det from
reaching 90 Thursday and Friday and adds some uncertainty there
today despite full sunshine across the region.

The persistent nature of this stretch of heat keeps advisory
headlines in consideration, however there has been several hours of
relief during each of the last few nights as low temperatures
dropped into the lower to mid 60s most locations. Surface dewpoint
showed some vulnerability to boundary layer mixing yesterday and
guidance today points to readings in the lower to mid 60s which will
only produce a degree or two of heat index enhancement. These
factors suggest advisory headlines are not needed while heat
precautions remain part of other messaging.

High temperatures Monday and Tuesday are expected to come off the
weekend peak by a degree or two each day. The record at flint is
only 86 1935 while readings will be near 91 1900 at saginaw but are
expected to be short of 93 1891 at detroit. This time period is the
beginning of the upper air pattern shift that has the rockies trough
lifting into the northern plains while eroding the ridge in the
east. This process and the added cloud cover will produce the slight
cooling trend before the associated cold front arrives. Usually
temperatures overachieve prior to a frontal passage but in this case
low level advective processes are very weak.

The latest global long range models are settling on Tuesday night
and Wednesday timing for the front and also depicting a rather
anemic moisture pattern along it while passing through the great
lakes. A chance of showers and thunderstorms does seem warranted as
the front continues to show enough temperature contrast to drop
highs back into the 70s by Wednesday and then into the 60s after a
reinforcing front by Thursday into Friday. Guidance then shows high
temps possibly not warmer than the 50s to start next weekend.

Marine
Extended stretch of very warm and humid conditions continues today
as the region remains under the influence of strong upper ridging.

This pattern will support light winds - under 15 knots - and low
waves during this time. These conditions will persist into early
next week. A cold front crossing the central great lakes Tuesday
night will bring a low chance of shower and thunderstorm activity,
along with winds shifting to the west and increasing to around 15
knots.

Prev discussion
Issued at 1202 am edt Sun sep 24 2017
aviation...

strong upper ridging anchored over the region will maintain
favorable aviation conditions through the period. This environment
may support patchy fog during the early morning period, particularly
at dtw yip. Otherwise, very dry column with stability will produce
clear skies through Sunday evening.

Dtw threshold probabilities...

* none.

Dtx watches warnings advisories
Mi... None.

Lake huron... None.

Lake st clair... None.

Michigan waters of lake erie... None.

Discussion... Bt
marine... ... .Sf
aviation... ..Sf
you can obtain your latest national weather service forecasts online
at

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
HRBM4 - 9075014 - Harbor Beach, MI 1 mi45 min WSW 7 G 8.9 73°F 1019.4 hPa (+0.3)65°F
KP58 15 mi54 min SW 5.1 73°F 1018.7 hPa64°F
PSCM4 30 mi45 min W 5.1 G 9.9 72°F 1020.3 hPa (+0.0)
45008 - S HURON 43NM East of Oscoda, MI 33 mi55 min SW 5.8 G 7.8 71°F 68°F1019.9 hPa (+0.0)
45149 - Southern Lake Huron 37 mi45 min SW 3.9 G 5.8 71°F 70°F1020 hPa (+0.4)
GSLM4 - Gravelly Shoals Light MI 49 mi45 min SW 7 G 18 74°F 1020.7 hPa (+0.7)
TAWM4 - Tawas City, MI 51 mi65 min SW 2.9 G 5.1 71°F 1020.3 hPa

Wind History for Harbor Beach, 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
G10
S5
SW6
SW7
G10
W7
W8
W7
G10
SE6
SE11
SE9
SE10
SE9
S11
S10
S5
S3
S2
SW5
SW8
SW8
SW5
SW6
W7
W7
1 day
ago
S6
S7
S5
S3
SE7
SE11
SE11
SE11
SE11
SE11
S12
SE11
S12
G15
S10
S6
S8
SW4
N10
G16
E8
G11
SE10
S12
G16
SW7
SW6
SW7
2 days
ago
S7
S10
G13
S11
G14
S12
G15
S6
G9
S15
SE13
SE15
SE12
S14
G17
S14
S11
S12
G15
S12
S11
S12
S6
S7
S7
G10
S6
S7
S7
S5
G8
S8

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Port Hope, MI15 mi54 minSW 5 mi73°F64°F74%1018.7 hPa
Huron County Memorial Airport, MI18 mi50 minN 07.00 miFair63°F60°F92%1021 hPa

Wind History from P58 (wind in knots)
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 24hrSW4SW6SW5CalmCalm4SW6W6CalmSE5SE3SE3E8SE3SE4S5S4S44SW3SW4SW5SW5SW5
1 day agoS53S4S4CalmS4SE5SE5E5E8SE7SE10SE6SE5CalmS4CalmN10SE6S6S5S435
2 days ago------------------SE10SE7SE7SE8SE10
G16
S8SE4S6S444S44CalmS5

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 Detroit/Pontiac, MI (4,6,7,8)
      (on/off)   Help

Ground Weather Radar Station Detroit, 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.