Friday, August14, 2020
Privacy Policy
L-36.com


Marine Weather and Tides
Lawrence, MI

Version 3.4
NOTICE
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 6:47AMSunset 8:45PM Friday August 14, 2020 2:15 PM EDT (18:15 UTC) Moonrise 1:04AMMoonset 4:37PM Illumination 18% Phase: Waning Crescent; Moon at 25 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
LMZ844 St Joseph To South Haven Mi- 1105 Am Edt Fri Aug 14 2020
Rest of today..North winds around 10 knots. Sunny. Waves 1 foot or less.
Tonight..Northeast winds 5 to 10 knots veering southeast after midnight. Mostly clear. Waves around 1 foot.
Saturday..South winds around 5 knots veering northwest. Sunny with a slight chance of rain showers. Waves 1 foot or less.
Saturday night..North winds 10 to 15 knots. Partly cloudy with a slight chance of rain showers. Waves 1 to 2 feet.
Sunday..Northwest winds 10 to 15 knots. Sunny. Waves 1 to 3 feet.
Monday..Northwest winds 10 to 15 knots. Sunny. Waves 1 to 3 feet.
Tuesday..Northeast winds around 10 knots backing north. Sunny. Waves around 1 foot.
LMZ844 Expires:202008142100;;441575 FZUS53 KGRR 141505 NSHGRR Nearshore Marine Forecast National Weather Service Grand Rapids MI 1105 AM EDT Fri Aug 14 2020 For waters within five nautical miles of shore on Lake Michigan LMZ844-142100-


7 Day Forecast for Marine Location Near Lawrence, MI
   Hourly   EDIT   Help
location: 42.23, -86.09     debug


Area Discussion for - Grand Rapids, MI
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS63 KGRR 141707 AFDGRR

Area Forecast Discussion National Weather Service Grand Rapids MI 107 PM EDT Fri Aug 14 2020

LATEST UPDATE . Aviation

SYNOPSIS. Issued at 602 AM EDT Fri Aug 14 2020

- Hot with a chance of an afternoon showers/storms in the south and east

- Best chance for storms Saturday evening

- Cooler and drier trends next week

DISCUSSION. (This afternoon through next Thursday) Issued at 602 AM EDT Fri Aug 14 2020

-- Hot with a chance of an afternoon showers/storms in the south and east --

The upper ridge that has dominated the weather pattern this week will begin to break down this afternoon. This weakening ridge will be sandwiched between two upper level low pressure systems. One, is a weak wave will be moving through the Ohio valley and a stronger, deeper system that is making its way through the upper Midwest today.

As the weak system in Ohio moves northeastward, it will bring moist easterly flow across the Lower peninsula. This will increase the unstable CAPE to southern Michigan. Couple this CAPE with the hot daytime temperatures that are expected to be in the upper 80s to low 90s and you get a chance for showers and thunderstorms. The latest CAMS have storms sparking after 4 PM. However there remains several limiting factors. First, is the remaining stability of the region. That will stifle any convection from forming. The next is the lack of shear and upper level forcing. Any convection that does form, will be late in the afternoon, and will be in the east, near Jackson to Lansing, and south, perhaps on a very weak boundary south of Kalamazoo.

-- Best chance for storms Saturday evening --

The before-mentioned system that is currently moving through the upper midwest, will trek through Michigan, on Saturday. As the system moves into the Great Lakes region, it will weaken. The upper level pattern shows divergent flow early to mid Saturday. However between 21Z to 06Z a mid level trough will level trough, will move through the northern half of the Lower Peninsula. The best precipitation chances will be north of Grand Rapids, however the positively tilted trough will allow the front to linger Saturday evening across southwest Michigan. So expect a lack of convection through the first half of Saturday but scattered showers and thunderstorms possible Saturday evening into the overnight hours early Sunday.

- Cooler and drier trends next week --

The front could linger into early Sunday. However it will pass by mid Sunday. Behind this front we will become under the influence of general trough aloft for much of next week. This results in much cooler temperatures, and a mainly dry forecast.

The latest model trends keep the upper jet mainly north and northeast of the area, on the anti-cyclonic side of the jet. A few isolated showers can not be ruled out, especially on Monday with a short wave not far away. However, ridging in the lower levels being produced by the upper ridge to our west should keep most of the area dry most of the time. In addition, moisture will be quite limited once it gets swept out on Sunday. The CPC also reinforces this as the 6 to 10 outlook has SW Michigan a slightly below normal temperatures probability.

Temperatures will drop to the mid to upper 70s Monday into Tuesday and slowly rebound to the lower 80s by Thursday.

AVIATION. (For the 18Z TAFS through 18Z Saturday afternoon) Issued at 104 PM EDT Fri Aug 14 2020

We're seeing a developing cu field across far SE Lower. A few thunderstorms have developed within the past hour and these storms are moving northwest. We kept the VCTS in the eastern TAFS and VCSH in the west to account for dissipating storms as instability wanes late in the day. Some MVFR fog is possible for a few hours early Saturday morning as winds remain light and low level moisture increases.

MARINE. Issued at 157 AM EDT Fri Aug 14 2020

Winds will remain fairly light through the period. As such, headlines shouldn't be needed until the late Sunday- Monday time frame. Offshore winds will dominate the next couple of days, with winds becoming onshore for the late afternoon and evening hours due to the development of the lake breeze.

Winds will start to come up Saturday night ahead of the incoming cold front but the latest CAMS keep them below criteria. Stronger winds arrive behind the front and continue through Monday. Headlines will likely be needed with the lake waters near their annual peak warmth, and with a fairly cool air mass approaching.

GRR WATCHES/WARNINGS/ADVISORIES. MI . None. LM . None.

SYNOPSIS . Ceru DISCUSSION . Ceru AVIATION . 04 MARINE . Ceru


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
SVNM4 - South Haven, MI 16 mi16 min NW 15 G 17 77°F
45168 17 mi16 min NNW 12 G 14 76°F 76°F1 ft1015.8 hPa (-1.1)68°F
SJOM4 - St. Joseph, MI 23 mi16 min N 8 G 13 78°F 1016.9 hPa (-1.0)
45029 47 mi16 min WNW 5.8 G 7.8 76°F 74°F1016.1 hPa (-0.9)68°F

Wind History for Holland, MI
(wind in knots)    EDIT      (on/off)   Help
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
2
PM
Last
24hr
W6
W6
NW6
N12
N12
N14
N4
NE5
N5
NE5
E5
NE7
E5
NE7
E7
E8
G11
NE9
NE7
G11
E7
G11
NE8
NE6
G9
E7
G10
NE6
G11
NW9
1 day
ago
W8
NW10
NW8
NW8
NW12
N11
NW10
NE3
NE3
E4
E1
E6
E6
E7
E7
E8
E8
E7
E7
E3
E4
G7
E4
G7
W6
G9
W7
2 days
ago
W6
W7
NW7
W7
W8
NW7
NW4
NE1
E2
NE1
E3
E2
E3
E3
E4
E6
E7
E6
E6
E1
SW1
W5
W6
W6

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
South Haven, South Haven Area Regional Airport, MI12 mi21 minENE 510.00 miFair85°F61°F44%1016.3 hPa
Southwest Michigan Regional Airport, MI20 mi23 minVar 610.00 mi85°F64°F51%1015.6 hPa

Link to 5 minute data for KLWA

Wind History from LWA (wind in knots)
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
2
PM
Last 24hrSE5E7E5SE3NE7NE5CalmCalmCalmCalmCalmNE3E3CalmCalmCalmCalmCalmE4E5E5E6NE6E5
1 day agoE6E3N5N3N7NW3N3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmE3SE3E4E3E6SE5
2 days agoNW9
G16
NW7N8NW6N5NW6CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmE3SE5SE4E4

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 Grand Rapids, MI (14,3,4,5)
      (on/off)   Help

Ground Weather Radar Station Grand Rapids/Muskegon, MI
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

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. 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 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.