Friday, January19, 2018 L-36.com


Marine Weather and Tides
Lawrence, 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 8:04AMSunset 5:42PM Friday January 19, 2018 12:24 PM EST (17:24 UTC) Moonrise 9:39AMMoonset 8:21PM Illumination 9% Phase: Waxing Crescent; Moon at 3 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- 1107 Pm Est Mon Jan 15 2018
Rest of tonight..Southwest winds 15 to 25 knots. Snow. Waves 2 to 4 feet.
Tuesday..Southwest winds 5 to 15 knots veering northwest late in the day. Snow showers likely. Waves calm.
Tuesday night..North winds 5 to 15 knots backing west 10 to 20 knots toward daybreak. Snow showers likely in the evening, then a chance of snow showers overnight. Waves calm.
Wednesday..West winds to 30 knots backing southwest gales to 35 knots late in the day. Partly Sunny. A slight chance of snow showers until midday. Waves calm. Waves are for ice free areas. This is the last nearshore marine forecast (nshgrr) issuance for the season. The nshgrr will again be issued around april 1st 2018, or as conditions warrant.
LMZ844 Expires:201801161015;;514454 FZUS53 KGRR 160407 NSHGRR Nearshore Marine Forecast National Weather Service Grand Rapids MI 1107 PM EST Mon Jan 15 2018 For waters within five nautical miles of shore on Lake Michigan LMZ844-161015-

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 191147
afdgrr
area forecast discussion
national weather service grand rapids mi
647 am est Fri jan 19 2018
latest update...

aviation

Synopsis
Issued at 258 am est Fri jan 19 2018
fair weather with moderating temperatures will continue into
Saturday then rain will move in on Sunday and Monday. Colder air
with snow and snow showers will arrive Monday night into
Wednesday.

Short term (today through Sunday)
issued at 258 am est Fri jan 19 2018
forecast issues are for timing and p-type early Sunday as area of
isentropic ascent and deeper moisture advecting in from the south
brings the chance patchy freezing rain at the outset. Temps and
dew points are at or near freezing across the southern zones
around midnight when the precip is expected to begin so there
could be a brief period of fzra and this is mentioned in the
forecast.

Model soundings also show the potential for some snow across the
northern tier, especially the higher elevations into Sunday
afternoon before the column GOES above freezing with all liquid
expected by late afternoon and evening.

Long term (Sunday night through Thursday)
issued at 258 am est Fri jan 19 2018
strong isentropic upglide and increasing moisture north of the warm
front will result in widespread rain showers Sunday night. Rain will
continue Monday as the strong low pressure system moves northeast
into the great lakes region.

Patchy fog is also expected due to the high boundary layer moisture
and melting of any lingering snow cover. It is not completely out of
the question that a few thunderstorms may develop along and just
ahead of the sfc low cold front. We left it out of the fcst at this
time mainly due to weak instability.

Colder air will move in on the back side of the departing system and
in conjunction with wrap around moisture behind the departing low
will cause rain showers to change over to snow showers Monday night.

Snow showers will continue Tuesday with potential for light
accumulations of around 1 to 3 inches as suggested by a consensus of
latest medium range guidance.

A high pressure ridge will then build in from the west and bring
fair wx Wednesday and Thursday. Temperatures will average near
normal for this time of year Tuesday through Thursday.

Aviation (for the 12z tafs through 12z Saturday morning)
issued at 647 am est Fri jan 19 2018
patchy stratocu with ceilings 1500 to 2500 feet will be across
lower michigan early today. Otherwise...VFR conditions expected
to continue through tonight. Southwest winds will continue to gust
over 20 knots at times today.

Hydrology
Issued at 302 pm est Thu jan 18 2018
the latest update from the muskegon river ice jam in mecosta county
is that slow improvement continues. Chunks of ice remain in the
river, but are stable at this point with slowly falling river
levels. Minor flooding is ongoing immediately along the river bank
in low lying areas.

A warming trend through the weekend will result in snowmelt.

Existing snow depths generally contain 0.2" to 0.5" of liquid.

Precipitation amounts of 0.5" to 1.00" are possible through early
Tuesday. This will most certainly lead to some rising rivers with
minor flooding possible next week, especially on smaller streams.

Highs in the 40s and lows in the mid-20s to around 30 degrees may
not be quite warm enough to drastically weak ice on all rivers. This
may mitigate some of the impact. However, ice jams are nearly
unpredictable. Residents living near rivers in flood prone areas
should remain vigilant late this weekend and next week should ice
jams develop.

Grr watches warnings advisories
Mi... None.

Lm... None.

Synopsis... Ostuno
short term... Ostuno
long term... Laurens
aviation... Ostuno
hydrology... Jam


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 mi45 min SSW 19 G 22 31°F
SJOM4 - St. Joseph, MI 23 mi85 min SSW 12 G 17 30°F 1014.2 hPa (+1.0)
HLNM4 - 9087031 - Holland, MI 38 mi55 min S 20 G 25 1010.8 hPa
MCYI3 - Michigan City, IN 56 mi35 min S 15 G 17 33°F

Wind History for Holland, MI
(wind in knots)    EDIT      (on/off)   Help
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
8
AM
9
AM
10
AM
11
AM
12
PM
Last
24hr
S22
G28
S20
G26
S20
G25
S20
G26
S21
G29
S22
SW23
G29
S19
G28
S18
G24
SW20
G27
SW17
G24
SW16
G20
SW16
S17
SW17
G21
SW16
G20
SW13
G17
S15
G19
S16
G20
SW17
G22
S18
G24
S18
G24
S17
G22
S18
G25
1 day
ago
W19
G23
W24
SW22
G29
SW25
SW22
G30
SW22
G29
SW25
G31
SW27
G33
SW28
G35
SW25
G32
SW22
G30
SW25
G31
SW26
G32
SW25
SW25
SW21
G26
SW21
G27
SW21
G31
SW22
SW22
SW21
G27
SW20
G27
SW21
G26
SW19
G27
2 days
ago
S7
S8
S8
S9
S7
E3
G6
N7
G10
NE6
G9
NE7
G10
E4
E4
E3
E2
SE4
SE5
G8
S8
S11
G14
W11
G16
W16
W17
W18
W20
W20
W19

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
South Haven, South Haven Area Regional Airport, MI12 mi30 minSW 10 G 2010.00 miFair35°F19°F51%1012.2 hPa
Southwest Michigan Regional Airport, MI20 mi32 minSSW 1310.00 miFair35°F19°F52%1013.5 hPa

Wind History from LWA (wind in knots)
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
8
AM
9
AM
10
AM
11
AM
12
PM
Last 24hrSW13
G23
SW15
G21
SW10SW10
G17
SW17
G24
SW12
G22
SW16
G21
SW14
G23
SW13
G20
SW15
G22
SW17
G22
SW11
G21
SW14
G21
SW12
G20
SW12
G22
SW12
G21
SW11
G17
SW12
G16
SW8
G15
SW7S7SW10
G14
SW13
G21
SW13
G19
1 day agoW12
G19
W14
G19
W16
G23
W13
G18
W14
G22
W15
G25
SW15
G26
SW16
G24
SW14
G23
SW17
G23
SW16
G29
SW15
G24
SW13
G23
SW12
G22
W15
G25
W17
G28
W15
G23
W12
G23
W19
G26
W15
G23
SW10
G22
SW18
G27
SW12
G24
SW15
G25
2 days agoS4CalmCalmCalmSW3CalmS4S3CalmCalmCalmCalmCalmE3CalmCalmCalmCalmS3S3W7W10
G15
W12
G17
W11
G15

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 (12,3,4,5)
      (on/off)   Help

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

Ad by Google

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.