Monday, September25, 2017 L-36.com


Marine Weather and Tides
Lake Fenton, 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 7:25AMSunset 7:26PM Monday September 25, 2017 1:11 PM EDT (17:11 UTC) Moonrise 11:42AMMoonset 9:49PM Illumination 25% Phase: Waxing Crescent; Moon at 5 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
LCZ460 Lake St Clair- 1001 Am Edt Mon Sep 25 2017
Rest of today..Light and variable winds. Mostly Sunny. Waves 2 feet or less.
Tonight..Southeast winds 5 to 10 knots this evening becoming light and variable. Mostly clear. Waves 2 feet or less.
Tuesday..Light and variable winds becoming southeast 5 to 10 knots late in the afternoon. Mostly Sunny. Waves 2 feet or less.
Tuesday night..South winds 5 to 10 knots in the evening becoming light and variable. Mostly clear. Waves 2 feet or less.
Wednesday..Northwest winds 5 to 10 knots becoming north 10 to 15 knots in the evening. Partly cloudy then clearing. Waves 2 feet or less.
Thursday..Northeast winds 10 to 15 knots. Mostly clear. Waves 2 feet or less.
Friday..Northwest winds 10 to 15 knots. Partly cloudy. A chance of showers. Waves 2 feet or less.
LCZ460 Expires:201709252000;;910820 FZUS63 KDTX 251405 RRA GLFSC Lake St Clair Forecast National Weather Service Detroit/Pontiac MI 1001 AM EDT MON SEP 25 2017 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, 30.10 inches, will hold across the central and eastern Great Lakes today through Tuesday. The next low pressure system and cold front, 29.80 inches, is then due to cross the region Tuesday night and Wednesday. Cooler high pressure will follow the front Thursday also followed quickly by another cold front during Friday. LCZ460-252000-

7 Day Forecast for Marine Location Near Lake Fenton, MI
   Hourly   EDIT   Help
location: 42.85, -83.72     debug


Area Discussion for - Detroit/Pontiac, MI
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus63 kdtx 251107
afddtx
area forecast discussion
national weather service detroit pontiac mi
707 am edt Mon sep 25 2017

Aviation
Surface high pressure centered over the eastern great lakes will
remain in control of aviation weather today and tonight. A light
southeast wind around the west flank of the high and into se
michigan will maintain enough humidity for scattered cumulus to form
during the afternoon under patches of higher clouds. This will
constituteVFR that will last through tonight until light fog
redevelops toward sunrise Tuesday.

Dtw threshold probabilities...

* none.

Prev discussion
Issued at 315 am edt Mon sep 25 2017
discussion...

record setting upper level ridge (00z dtx sounding revealed a 500 mb
height of 591 dam) is finally beginning to slowly weaken break down,
as upper level trough energy over the rockies heads off to the
northeast. 500 mb heights progged to fall to 585 dam on Tuesday, with
what looks to be a dry cold front tracking through Tuesday
evening night, as there is barely any instability, and mid level
lapse rates are pathetic as upper level support tracks off into
ontario.

High clouds and increase in moisture coming up from the south today
should help level off the high temperatures around 90 degrees, as
925 mb temps reach 25 c or slightly better. There is even
suggestions by hires models that moisture advection and instability
building up during the day will be sufficient to generate a few
showers and thunderstorms across the north half of the cwa, which is
not totally out of the question with the noted weak surface
trough convergence. Ultimately, the skinny CAPE with the dry mid
levels will probably be too much to overcome.

Another reasonable shot at 90 degrees on Tuesday, as light level
southwest flow developing ahead of the cold front should allow for
more uniform highs, with 925 temps still advertised to reach 25 c
and potentially slightly exceed.

Healthy low level cold advection on Wednesday, as 925 mb temps fall
into the mid teens by day's end, which should hold maxes mostly down
in the 70s. Continued cold advection Wednesday night, with 850 mb
temps also lowering into the 2-5 c range as surface ridge arrives
Thursday morning. Late september insolation should be able to boost
temps into the upper 60s to near 70 degrees, or near normal values.

Temperatures then look to drop below normal as we head into the
weekend with upper level trough sliding through during the Friday-
Saturday time period, with 850 mb temps falling to around zero per
00z euro.

Marine...

record early fall warmth will continue today through Tuesday. The
warm air and light southerly wind will produce ideal marine
conditions during this time. A cold front crossing the central great
lakes Tuesday night and Wednesday will then bring temperatures back
down toward normal along with a low chance of showers and
thunderstorms. Winds behind the front will become northwest at light
to moderate speed, although a few gusts near 30 knots will be
possible over the open waters of central lake huron. The part of the
forecast to monitor will be the associated higher wave pattern
remaining far enough offshore to avoid the need for small craft
advisories over southern lake huron. Another low pressure system and
cold front due Friday will bring a reinforcement of colder air and
unstable marine conditions for the weekend.

Dtx watches warnings advisories
Mi... None.

Lake huron... None.

Lake st clair... None.

Michigan waters of lake erie... None.

Aviation... ..Bt
discussion... Sf
marine... ... .Bt
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
CLSM4 - St. Clair Shores, MI 52 mi71 min NE 2.9 G 4.1 74°F 1018.3 hPa (-0.3)
SBLM4 - Saginaw Bay Light #1, MI 66 mi71 min ESE 4.1 G 5.1 74°F 1017.3 hPa (-0.6)

Wind History for Fort Gratiot, MI
(wind in knots)    EDIT      (on/off)   Help
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
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
Last
24hr
NE3
NE3
NE4
E5
NE3
NE3
NE4
NE2
NE1
S2
SE2
S2
S4
S4
SW2
--
--
SE1
E2
E1
SE1
S2
NE3
NE3
1 day
ago
E3
NE6
E8
E5
E7
NE4
SW3
SW1
SW3
SW4
SW4
SW2
SW4
SW3
SW4
SW3
W1
SW3
SW1
S1
NE3
--
S3
NE2
2 days
ago
NE5
NE5
E6
E3
NE3
--
SW4
S4
S5
S2
G5
SW3
NE1
G4
S4
SW4
SW4
SW2
W2
SW4
S4
SW3
SW3
SW2
SW2
SE2

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Flint, Bishop International Airport, MI9 mi19 minSSW 610.00 miFair88°F62°F42%1017.1 hPa
Pontiac, Oakland County International Airport, MI20 mi19 minSE 410.00 miMostly Cloudy86°F64°F48%1016.9 hPa
Howell, Livingston County Airport, MI21 mi17 minS 510.00 miFair88°F61°F40%1017.9 hPa
Owosso, Owosso Community Airport, MI24 mi17 minN 010.00 miFair90°F56°F33%1017.6 hPa

Wind History from FNT (wind in knots)
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
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
Last 24hrS9S8S8S9S8
G24
S6E4SE7SE5S4S4S3S3S4S4CalmCalmCalmCalmCalmS3CalmCalmSW6
1 day agoCalmNW4CalmCalmS4SE6S5S5S5S5S4CalmCalmS3CalmCalmCalmCalmSE3CalmS5S5SE6SE6
2 days agoCalmCalm5W4W5W3S4S6S5CalmCalmS5N3S4CalmCalmCalmCalmSE3S3SW4W4CalmW3

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 (13,3,4,5)
      (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.