Friday, September25, 2020
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L-36.com

Marine Weather and Tides
La Porte, IN

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
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 6:36AMSunset 6:39PM Friday September 25, 2020 8:20 AM CDT (13:20 UTC) Moonrise 3:49PMMoonset 12:06AM Illumination 58% Phase: Waxing Gibbous; Moon at 8 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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LMZ046 Michigan City In To New Buffalo Mi- 348 Am Edt Fri Sep 25 2020
Today..South wind 10 knots. Sunny. Waves 1 foot or less.
Tonight..South wind 5 to 15 knots. Clear. Waves 1 to 2 feet.
Saturday..South wind 10 to 20 knots. Mostly Sunny. Waves 1 to 3 feet.
Saturday night..South wind 15 to 20 knots. Gusts up to 25 knots. Mostly clear through midnight then becoming partly cloudy. Waves 2 to 4 feet subsiding to 1 to 3 feet. The water temperature at st. Joseph is 59 degrees.
LMZ046 Expires:202009251630;;328924 FZUS53 KIWX 250748 NSHIWX Nearshore Marine Forecast National Weather Service Northern Indiana 348 AM EDT Fri Sep 25 2020 For waters within five nautical miles of shore on Lake Michigan LMZ046-251630-


7 Day Forecast for Marine Location Near La Porte, IN
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location: 41.59, -86.71     debug


Area Discussion for - Northern Indiana, IN
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FXUS63 KIWX 251033 AFDIWX

Area Forecast Discussion National Weather Service Northern Indiana 633 AM EDT Fri Sep 25 2020

SYNOPSIS. Issued at 355 AM EDT Fri Sep 25 2020

Expect warm conditions these next few days with high temperatures near 80 degrees for most locations. It will turn notably colder early next week, paired with periodic rain chances.

SHORT TERM. (Today and Saturday) Issued at 355 AM EDT Fri Sep 25 2020

A trough will work its way eastward through our area over the next 24 hours. As it does so, warm air advection at 850-mb ramps up. This will allow temperatures to warm to near 80 degrees for much of the CWA. The Gulf of Mexico remains off-limits to our area, thus keeping things dry, due to a surface low tracking through the Southeast U.S.

WAA continues through Saturday, pushing high temperatures a few degrees warmer than Friday. From 12z Friday to 00z Sunday, 850-mb temperatures will warm from about 12C to 22C; pretty impressive for late September. Winds will pick up a bit through the day Saturday, with wind gusts near 20-25 mph as a surface low approaches the western Great Lakes.

LONG TERM. (Saturday night through Thursday) Issued at 355 AM EDT Fri Sep 25 2020

We'll remain in the warm sector of a surface low forecast to lift northeast toward the Hudson Bay on Sunday, which means we'll be on track for another day with highs near 80. Since last week, the forecast for this whole system has really slowed down. A glimmer of forecast confidence this morning is that the 00z GFS and 00z ECMWF are in agreement for the overall 500-mb height pattern. However, the ECMWF has a more portent surface low.

As this low wraps-up over the Hudson Bay, a cold front moves through our area and huge trough takes shape over the Central US. This pattern opens up our access to some Gulf Moisture, and thus the best chance for rain we've seen in nearly two weeks. This of course will erase highs in this 80s; say hello to highs in the 60s on Monday (NW Ohio could sneak into the 70s, especially if this system continues to slow down).

The mid-and late-week forecast is rather murky with either a surface low tracking through the mid-Mississippi River Valley (GFS) or a cut- off low swirling over Louisiana, then lifting north (ECMWF). Therefore, broadly speaking, the forecast will consist of cooler- than-normal temperatures, periodic chances for rain showers (especially toward the lake, and in the northern counties), and even gusty winds and high waves on Lake Michigan.

AVIATION. (For the 12Z TAFS through 12Z Saturday Morning) Issued at 628 AM EDT Fri Sep 25 2020

VFR conditions are expected to persist throughout this forecast valid period. Sfc anticyclone will gradually lose its influence across northern Indiana into tonight. Calm winds this morning will become light south-southeasterly with speeds to around 10 knots this afternoon. Some light southerly flow to persist tonight as low level gradient begins to strengthen. Higher res guidance does indicate some northward advance of stratus across the Ohio Valley late in the period, but would suspect greater chances of patchy MVFR cigs will remain south of the terminals into southern Indiana/southern Ohio Saturday morning.

IWX WATCHES/WARNINGS/ADVISORIES. IN . NONE. MI . NONE. OH . NONE. LM . NONE.

SYNOPSIS . Brown SHORT TERM . Brown LONG TERM . Brown AVIATION . Marsili

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MCYI3 - Michigan City, IN 14 mi30 min S 5.1 G 5.1 62°F 53°F
SJOM4 - St. Joseph, MI 37 mi20 min S 1 G 5.1 62°F 1016.6 hPa (+0.3)
CMTI2 - 9087044 - Calumet, IL 45 mi50 min SSW 2.9 G 4.1 62°F 1015.5 hPa56°F

Wind History for Calumet Harbor, IL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Michigan City Municipal Airport, IN10 mi45 minN 010.00 miFair52°F51°F100%1016.9 hPa
Starke County Airport, IN18 mi25 minN 010.00 miFair54°F51°F94%1016.9 hPa
Valparaiso Porter County Municipal Airport, IN19 mi24 minN 08.00 miFair55°F53°F93%1016.7 hPa
South Bend International Airport, IN22 mi26 minESE 310.00 miFair58°F53°F84%1017.1 hPa

Link to 5 minute data for KMGC

Wind History from MGC (wind in knots)
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Last 24hrSW4SW4SW3SW3SW5SW8CalmSW8N5N4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm
1 day agoSW5SW5CalmNW4CalmW4NW4NW3W3SW7CalmCalmCalmCalmCalmCalmCalmS3SW5CalmCalmS3CalmS3
2 days agoS3SW5SW5S3W6NW3W5NW6CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmSW3

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map
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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
Ground Weather Radar Station Northern Indiana, IN
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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.