Sunday, August20, 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 6:57AMSunset 8:36PM Sunday August 20, 2017 12:17 AM EDT (04:17 UTC) Moonrise 4:31AMMoonset 7:00PM Illumination 5% Phase: Waning Crescent; Moon at 27 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- 903 Pm Edt Sat Aug 19 2017
Rest of tonight..West winds 5 to 10 knots becoming southeast. Clear. Waves 1 to 2 feet.
Sunday..South winds 5 to 10 knots veering southwest. Sunny. Waves 1 foot or less.
Sunday night..South winds 5 to 15 knots. Partly cloudy. A slight chance of showers and Thunderstorms overnight. Waves 1 foot or less.
Monday..Southwest winds 10 to 15 knots. Partly Sunny. A slight chance of showers and Thunderstorms in the afternoon. Waves around 1 foot.
LMZ844 Expires:201708200930;;648976 FZUS53 KGRR 200103 NSHGRR Nearshore Marine Forecast National Weather Service Grand Rapids MI 903 PM EDT Sat Aug 19 2017 For waters within five nautical miles of shore on Lake Michigan LMZ844-200930-

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 200004
afdiwx
area forecast discussion
national weather service northern indiana
804 pm edt Sat aug 19 2017

Synopsis
Issued at 250 pm edt Sat aug 19 2017
high pressure will provide fair weather into tonight and Sunday,
with lows near 60 degrees tonight and highs in the 80s tomorrow.

More humid conditions are expected on Monday with low chances for
afternoon thunderstorms west of interstate 69. A cold front will
swing through later Monday night into Tuesday with chances for
several rounds of showers and thunderstorms. Cooler and drier air
then filters in behind this system Wednesday through next weekend.

Update
Issued at 753 pm edt Sat aug 19 2017
no major concerns for the evening update, with previous forecast
appearing to be on track. Only item that may need watching is
patchy fog potential late tonight early morning. Crossover temps
are highest for areas roughly along and south of us route 30, but
would expect that any patchy fog should be shallow in nature and
confidence in extent continues to preclude zfp mention at this
time.

Short term (this evening through Monday)
issued at 250 pm edt Sat aug 19 2017
subsident west-northwest flow will allow surface ridging to drift
through the region late this afternoon into tonight ensuring
dry mostly clear conditions. Sunday into Monday will feature a brief
transition to high latitude quasi-zonal flow. Low level flow will
veer more southwesterly during this time promoting gradual
moistening warming, especially by Monday when airmass becomes
moderately unstable. Will have to watch the slow eastward
progression of upstream convection on Monday as low
amplitude convectively aided shortwave energy emerges on southern
fringe of westerlies. Outflow from this feature could generate some
convection into NW in SW lower mi mainly into Monday afternoon,
though kept pops low as main frontal zone develops into the upper
midwest western great lakes.

Long term (Monday night through Saturday)
issued at 250 pm edt Sat aug 19 2017
chances for rain storms increase Monday night into Tuesday Tuesday
evening as another seasonably strong upper trough digs southeast
into the great lakes. Ample moisture transport near the associated
cold front and or pre-frontal trough outflow, combined with the
potential for lead convectively induced waves to translate through
in strengthening wsw flow, support going mid chance to likely pops
(several rounds of rain thunder). There remains some potential for
strong severe convection Tuesday afternoon given increasing
flow forcing aloft over moist unstable surface conditions, though
where when convection is more active (near possible composite
outflow or along main front?) remains uncertain at this fcst range.

Expansive high pressure then builds in post-frontal mid week through
next weekend on the subsident southwest periphery of an eastern noam
longwave trough.

Aviation (for the 00z tafs through 00z Sunday evening)
issued at 753 pm edt Sat aug 19 2017
vfr conditions expected to prevail this period with possible only
exception late tonight into early Sunday morning when some patchy
shallow fog may form. Confidence in patchy fog formation is low at
this time, and best chance appears as though it would be generally
along and south of route 30 where crossover temps are slightly
higher. Did include a tempo MVFR vsby restriction at kfwa in the
08z-12z period. Otherwise, sfc high pressure will provide light to
calm winds tonight, eventually favoring south 5 to 10 knots on
Sunday as the ridge of high pressure pushes off to the east.

Iwx watches warnings advisories
In... None.

Mi... None.

Oh... None.

Lm... None.

Update... Marsili
synopsis... Steinwedel
short term... Steinwedel
long term... Steinwedel
aviation... Marsili
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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SJOM4 - St. Joseph, MI 47 mi78 min ESE 1 G 2.9 67°F 1016.6 hPa (+1.0)
MCYI3 - Michigan City, IN 66 mi28 min ESE 4.1 G 5.1 68°F 56°F
HLNM4 - 9087031 - Holland, MI 70 mi48 min S 6 G 7 70°F 1015 hPa

Wind History for Holland, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Haines Memorial Airport, MI9 mi22 minN 010.00 miFair62°F58°F89%1016.6 hPa
Sturgis, Kirsch Municipal Airport, MI13 mi23 minN 010.00 miFair61°F58°F91%1016.3 hPa
Goshen, Goshen Municipal Airport, IN22 mi25 minN 010.00 miFair63°F59°F87%1016.1 hPa

Wind History from HAI (wind in knots)
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Last 24hrCalmCalmCalmCalmS3CalmCalmCalmNW4NW5NW6N6N3NW6NW9N5NW4W6NW5NW4NW3CalmCalmCalm
1 day agoSW7SW6W12
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2 days agoSE7SE9SE6S5S5S3S7S6S8SW10
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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.