Wednesday, March29, 2017 L-36.com


Marine Weather and Tides
Grand Ledge, MI

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 7:22AMSunset 8:03PM Wednesday March 29, 2017 7:07 AM EDT (11:07 UTC) Moonrise 7:37AMMoonset 9:04PM Illumination 4% Phase: Waxing Crescent; Moon at 2 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
LMZ846 Holland To Grand Haven Mi- 330 Am Edt Wed Mar 29 2017
Today..Northeast winds 5 to 15 knots. Partly Sunny. Areas of fog until midday. Waves around 1 foot.
Tonight..East winds 15 to 25 knots. Cloudy with a chance of light rain. Waves 1 to 2 feet.
Thursday..East winds to 30 knots. Rain. Waves 1 to 3 feet.
Thursday night..East winds 20 to 25 knots. Showers likely in the evening, then a chance of showers overnight. Waves 1 to 3 feet.
LMZ846 Expires:201703291515;;248461 FZUS53 KGRR 290730 NSHGRR NEARSHORE MARINE FORECAST NATIONAL WEATHER SERVICE GRAND RAPIDS MI 330 AM EDT WED MAR 29 2017 FOR WATERS WITHIN FIVE NAUTICAL MILES OF SHORE ON LAKE MICHIGAN LMZ846-291515-

7 Day Forecast for Marine Location Near Grand Ledge, MI
   Hourly   EDIT   Help
location: 42.75, -84.75     debug


Area Discussion for - Grand Rapids, MI
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus63 kgrr 290728
afdgrr
area forecast discussion
national weather service grand rapids mi
328 am edt Wed mar 29 2017
latest update...

synopsis/short term/long term/marine

Synopsis
Issued at 309 am edt Wed mar 29 2017
a ridge of high pressure will track eastward through michigan
today. This fair weather system will provide the region with dry
weather. Clouds will thicken up during the day as a low pressure
system approaches from the southwest. This system will spread a
mixture of precipitation types to the area late tonight... That
will transition to all rain during the day on Thursday. The wet
and cool weather will then persist into Friday.

Short term (today through Friday)
issued at 309 am edt Wed mar 29 2017
the main challenge in the short term deals with the potential
impacts for later tonight through Thursday. Overall it appears
parts of interior lower michigan could see some impacts mainly
from wet snow.

We are going to have to monitor this system carefully and may have
to make bigger adjustments to the forecast with time. The cooling
and drying airmass that we currently have in place is lowering the
wet bulb temperatures down ahead of the approaching storm system.

This will act to create more of a snow sounding when the steadier
precipitation moves in later tonight. Fgen strengthens
overhead... With favorable upper jet setup suggests the
precipitation could organize into a band... Especially after
midnight or Thursday morning. Up high... Weakness in the stability
could support a period of higher snow rates. Currently the
northern row or two of zones in my CWA look to be at the greatest
risk with the main window from 09z to 18z. This would include the
area along and north of a mount pleasant to big rapids line. Still
some uncertainty as mixed precipitation could occur and low level
temperatures may struggle to fall below freezing possibly
limiting impacts. We will continue to highlight the potential in
the hazardous weather outlook and social media.

Low level wet bulb temperatures are still not far from snow going
into Thu evening. If this system trends a little colder... Snow
could persist even into Thu afternoon and evening. Stay tuned.

Long term (Friday night through Tuesday)
issued at 309 am edt Wed mar 29 2017
there may be a few lingering showers Friday night as low pressure
moves east across northern ohio, otherwise the weekend looks dry with
highs in the 50s as high pressure builds in behind the departing low.

The next chance for measurable rain comes late Monday and Monday
night as low pressure moves from the plains east across the ohio
valley. Most of the precipitation associated with this system will
stay south of michigan. However, the southern CWA will see the
highest chances for light rain. Highs Monday and Tuesday will be in
the 50s.

Aviation (for the 06z tafs through 06z Wednesday night)
issued at 123 am edt Wed mar 29 2017
satellite imagery shows stratus/fog hugging the shore as it sinks
south over the lake. Mkg has scattered out and should remainVFR
through the night. Some MVFR fog is possible at azo through
sunrise, otherwiseVFR through the period.

Marine
Issued at 309 am edt Wed mar 29 2017
with a largely offshore wind... No marine headlines are expected
today to tonight.

Hydrology
Issued at 320 pm edt Mon mar 27 2017
most rivers have demonstrated within bank rises after rainfall over
the last 4 days. However, more elevated river levels at ionia,
hastings, eagle, and holt may be susceptible to additional rainfall
expected Thursday and Friday, possibly another 0.50"-1.00". This may
act to provide secondary river crests heading into the end of the
week and weekend, potentially higher than the current crests.

Grr watches/warnings/advisories
Mi... None.

Lm... None.

Synopsis... Mjs
short term... Mjs
long term... 04
aviation... 04
hydrology... Hoving
marine... Mjs


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
HLNM4 - 9087031 - Holland, MI 78 mi49 min E 5.1 G 5.1
MKGM4 - Muskegon, MI 90 mi37 min E 6 G 6 33°F 1026.3 hPa33°F
SBLM4 - Saginaw Bay Light #1, MI 91 mi67 min NW 5.1 G 5.1 36°F 1024 hPa (+0.3)

Wind History for Holland, MI
(wind in knots)    EDIT      (on/off)   Help
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
6
AM
7
AM
Last
24hr
N8
N6
NE6
G10
NW8
G11
N9
N8
NW11
N12
N11
G14
N14
NW16
N14
G17
N10
NW10
N11
N6
NW3
N6
NE2
E8
E7
E4
E4
E4
1 day
ago
W5
W3
SW3
SW4
SW3
NW6
W5
NW4
SW3
W3
NW5
N9
N14
N12
N10
N10
N9
N10
N10
N10
N8
NW9
N10
N10
2 days
ago
E17
G22
E11
G16
E14
G21
E15
G20
E12
G17
E12
G16
E12
E10
E6
E5
SE1
SE3
S4
S10
S6
S8
S11
S11
S6
SW5
SW5
SW7
W4
W2

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Lansing, Capital City Airport, MI8 mi15 minN 02.00 miFog/Mist30°F28°F92%1025.3 hPa
Charlotte, Fitch H Beach Airport, MI13 mi12 minN 04.00 miFog/Mist29°F28°F97%1024 hPa
Mason, Mason Jewett Field Airport, MI21 mi15 minN 07.00 miFair31°F30°F100%1024.7 hPa
Ionia County Airport, MI21 mi11 minN 03.00 miFog/Mist32°F31°F99%1024.7 hPa

Wind History from LAN (wind in knots)
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
6
AM
7
AM
Last 24hrN8N7NE8NE8N9NE9NE8NE9NE7N10NE10
G15
NE7E5CalmCalmNE4N3CalmCalmCalmCalmCalmCalmCalm
1 day agoW10W8W9W9W8W10W8SW7W11W8W6NW6NW8N4N7N7N3N5N7N6N8N7N8N6
2 days agoE5E6E7E5E11E10S6S7SE6S7S5SE7SE4SE5S7S7S6S6SW8SW6W9SW11W8W9

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 Grand Rapids, MI (7,2,3,4)
      (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.