Monday, December11, 2017 L-36.com


Marine Weather and Tides
Constantine, 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 8:00AMSunset 5:15PM Monday December 11, 2017 12:50 AM EST (05:50 UTC) Moonrise 1:21AMMoonset 1:55PM Illumination 47% Phase: Third Quarter Moon; Moon at 22 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
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LMZ844 St Joseph To South Haven Mi- 904 Pm Est Sun Dec 10 2017
.small craft advisory in effect until 1 am est Monday...
.gale watch in effect from Monday evening through Tuesday afternoon...
Rest of tonight..North winds 20 to 25 knots backing northwest 10 to 20 knots late at night, then backing west toward daybreak. Cloudy. A slight chance of flurries. Waves 3 to 5 feet.
Monday..Southwest winds 10 to 20 knots. Snow until midday, then snow showers in the afternoon. Waves 2 to 4 feet.
Monday night..West winds 15 to 25 knots becoming northwest gales to 35 knots after midnight. Snow showers likely. Waves 2 to 3 feet building to 10 to 14 feet.
Tuesday..Northwest gales to 35 knots decreasing to 30 knots. Snow showers. Waves 10 to 14 feet.
LMZ844 Expires:201712111015;;706427 FZUS53 KGRR 110204 NSHGRR Nearshore Marine Forecast National Weather Service Grand Rapids MI 904 PM EST Sun Dec 10 2017 For waters within five nautical miles of shore on Lake Michigan LMZ844-111015-

7 Day Forecast for Marine Location Near Constantine, MI
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location: 41.84, -85.68     debug


Area Discussion for - Northern Indiana, IN
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Fxus63 kiwx 110353
afdiwx
area forecast discussion
national weather service northern indiana
1052 pm est Sun dec 10 2017

Synopsis
Issued at 1255 pm est Sun dec 10 2017
there will be just a chance of light snow showers north of the
toll road through tonight. Dry and mostly cloudy otherwise tonight
with lows into the lower to middle 20s. A fast moving clipper
system will bring renewed snow and lake effect snow chances Monday
through Tuesday night. Several inches of accumulation are
possible this week, especially in and near the lake effect snow
belt region.

Short term (this evening through Monday evening)
issued at 246 pm est Sun dec 10 2017
a minor low amplitude disturbance, embedded in northwest flow,
will force a weak sfc trough the area early this evening. Nothing
more than clouds and few flurries expected with this wave given
weak forcing and shallow moisture profile.

A more robust shortwave will drop southeast into the northern
plains tonight and into the lower great lakes by later Monday Monday
evening. Leading WAA isentropic ascent wing will focus an area of
light snow on the nose of this warm advection into wi mi Monday
morning through mid afternoon. The southern edge of this precip
shield will likely clip our far northern zones, with areas
along south of us 30 likely remaining mainly dry. Deeper ascent
with the main vort max... And tightening low level baroclinic
response... Should promote full top-down saturation and chances
for a healthier fgen band to set up across lower mi (and possibly
far NRN in NW oh) in the afternoon and evening, though where
exactly this sets up is still uncertain. Pacific origin with
850-700 mb layer specific humidities nearing 3 g kg enough to
support a quick 1-3" of snow and difficult travel where banding
materializes.

Long term (Tuesday through Sunday)
issued at 246 pm est Sun dec 10 2017
active cold pattern this week gives way to a milder weekend...

a larger scale vort lobe and 160 kt upper jet dropping south-
southeast from northern canada will phase with the above
mentioned clipper system into the eastern great lakes and
northeast us Tuesday into early Wednesday. Deep cold northwest
flow on the backside on this negative height anomaly will likely
lead to another significant les event locally... This time focused
a little farther east. Excellent lake-induced thermal troughing,
longer duration persistence of NW flow trajectories, and favorable
les parameters suggest significant impacts accums are likely in
favored NW flow lake belts. There could even be headline worthy
impacts well inland into NE in given upstream preconditioning and
strong boundary layer flow. This period will continue to monitored
for winter wx headlines... With cold breezy conditions the story
otherwise.

The parade of minor low amplitude shortwaves and reinforcing shots
of cold air will continue through the remainder of the week as upper
troughing remains in place across the eastern us. The result will be
a continuation of below normal temps and several chances for light
snow followed by les, though details at this forecast range remain
uncertain. Upper troughing does look to briefly relax next weekend
which should allow milder air (near normal for mid dec) to
overspread.

Aviation (for the 06z tafs through 06z Monday night)
issued at 1052 pm est Sun dec 10 2017
transient MVFR CIGS will persist through daybreak before abating
timed with well mixed warm sector advancing ewd ahead of stout upper
disturbance dropping rapidly sewd out of alberta.

Went ahead and introduced snow mention late in regard to
rapid intense lake band development overnight Monday and to also
highlight gusty northwest winds.

Iwx watches warnings advisories
In... None.

Mi... None.

Oh... None.

Lm... Gale watch from Monday evening through Tuesday morning for
lmz043-046.

Synopsis... Murphy
short term... Steinwedel
long term... Steinwedel
aviation... T
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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SJOM4 - St. Joseph, MI 47 mi51 min NNW 14 G 17 32°F 1018.6 hPa (+1.3)
MCYI3 - Michigan City, IN 66 mi51 min NNW 15 G 16 31°F 21°F
HLNM4 - 9087031 - Holland, MI 70 mi51 min NNW 14 G 19 1016 hPa (+0.3)

Wind History for Holland, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Haines Memorial Airport, MI9 mi56 minN 010.00 miOvercast30°F22°F73%1017.3 hPa
Sturgis, Kirsch Municipal Airport, MI13 mi56 minN 010.00 miOvercast27°F22°F82%1016.6 hPa
Goshen, Goshen Municipal Airport, IN22 mi58 minWNW 710.00 miOvercast30°F23°F75%1018.1 hPa

Wind History from HAI (wind in knots)
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Last 24hrW4W8W6W7SW7SW7SW7SW8SW9SW8SW8SW11
G14
SW10SW6SW8SW5W3W5W5W5CalmNE4CalmCalm
1 day agoSW6SW6S9S9S10S8S7S5S6S6S7S7CalmNE3N3N5N4N3NW4NW4W6W4W5W5
2 days agoSW6SW3SW5SW5SW7SW8SW9SW7SW9
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W8SW6SW5SW6SW6SW6S7SW9SW7

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map and Satellite Images
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Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of GreatLakes    EDIT
Geos

Wind Forecast for Northern Indiana, IN (0,6,7,8)
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Ground Weather Radar Station Northern Indiana, IN
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weather_mapweather_map weather_map

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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.