Tuesday, December18, 2018 L-36.com


Marine Weather and Tides
Dune Acres, IN

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 7:08AMSunset 4:20PM Tuesday December 18, 2018 10:14 PM CST (04:14 UTC) Moonrise 2:49PMMoonset 3:20AM Illumination 88% Phase: Waxing Gibbous; Moon at 11 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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LMZ779 Lake Michigan From Michigan City In To St. Joseph Mi 5 Nm Offshore To Mid Lake- Lake Michigan From Two Rivers To Sheboygan Wi 5 Nm Offshore To Mid Lake- Lake Michigan From Sheboygan To Port Washington Wi 5 Nm Offshore To Mid Lake- Lake Michigan From Port Washington To North Point Light Wi 5 Nm Offshore To Mid Lake- Lake Michigan From North Point Light To Wind Point Wi 5 Nm Offshore To Mid Lake- Lake Michigan From Wind Point Wi To Winthrop Harbor Il 5 Nm Offshore To Mid Lake- Lake Michigan From Winthrop Harbor To Wilmette Harbor Il 5 Nm Offshore To Mid Lake- Lake Michigan From Wilmette Harbor Il To Michigan City In 5 Nm Offshore To Mid Lake- Lake Michigan From Pentwater To Manistee Mi 5 Nm Offshore To Mid Lake- Lake Michigan From Whitehall To Pentwater Mi 5 Nm Offshore To Mid Lake- Lake Michigan From Grand Haven To Whitehall Mi 5 Nm Offshore To Mid Lake- Lake Michigan From Holland To Grand Haven Mi 5 Nm Offshore To Mid Lake- Lake Michigan From South Haven To Holland Mi 5 Nm Offshore To Mid Lake- Lake Michigan From St. Joseph To South Haven Mi 5 Nm Offshore To Mid Lake- 828 Pm Cst Tue Dec 18 2018 Two Rivers Wi To Manistee Mi South...
Rest of tonight..South winds to 30 kt becoming southwest 15 to 25 kt. Waves 5 to 8 ft occasionally to 10 ft.
Wednesday..Southwest winds 15 to 25 kt becoming south to 30 kt. Waves 4 to 7 ft occasionally to 9 ft.
Wednesday night..South winds to 30 kt diminishing to 10 to 20 kt. Waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to 5 ft.
Thursday..Southwest winds 10 to 20 kt becoming northwest. Chance of drizzle in the morning, then chance of rain in the afternoon. Waves 3 to 5 ft subsiding to 2 to 4 ft.
Thursday night..North winds to 30 kt. Chance of rain in the evening. Waves 4 to 7 ft occasionally to 9 ft building to 6 to 9 ft occasionally to 12 ft.
Friday..North winds to 30 kt. Waves 6 to 9 ft occasionally to 12 ft.
Friday night..Northwest winds to 30 kt diminishing to 15 to 25 kt. Waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to 7 ft occasionally to 9 ft.
Saturday..West winds 10 to 20 kt increasing to 15 to 25 kt. Waves 3 to 5 ft.
Sunday..West winds 15 to 25 kt increasing to 30 kt. Chance of snow and rain showers. Waves 3 to 5 ft.
LMZ779 Expires:201812191030;;005831 FZUS63 KMKX 190228 GLFLM OPEN LAKE FORECAST for Lake Michigan National Weather Service Milwaukee/Sullivan WI 828 PM CST Tue Dec 18 2018 FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON Lake Michigan. Waves are provided as a range of significant wave heights, which is the average of the highest 1/3 of the wave, along with the average height of the highest 10% of the waves which will occasionally be encountered. .SYNOPSIS... High pressure of 30.2 inches centered over the Carolinas, stretches north through the eastern Great Lakes. It will drift out over the Atlantic through Wednesday. Meanwhile, weakening low pressure of 29.5 inches will slide to the north of Lake Superior Wednesday night, but a trailing trough of low pressure will drift through Wisconsin and across Lake Michigan into Thursday morning. South to southwest winds behind the departing high and ahead of the approaching low will be strong and gusty into the early morning hours of Wednesday. However, based on limited observations, it appears winds aren't as strong as forecast, though we can rule out gale force gusts through about midnight across the northern part of the lake. Winds will diminish on Wednesday as the trough approaches, then shift to the west on Thursday. Low pressure of 29.1 inches will lift from the Gulf states into upstate New York late by Friday. Strong northerly winds will develop across Lake Michigan as this low moves through the area. Gale force gusts will be possible later Thursday night into Friday night, particularly across the south half of Lake Michigan. Weak low pressure around 29.8 inches will cross the upper Great Lakes over the weekend. LMZ080-567-669-671-673-675-777-779-868-870-872-874-876-878-191030-


7 Day Forecast for Marine Location Near Dune Acres, IN
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location: 41.87, -87.2     debug


Area Discussion for - Chicago, IL
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Fxus63 klot 182330
afdlot
area forecast discussion
national weather service chicago romeoville, il
530 pm cst Tue dec 18 2018

Short term
100 pm cst
through Wednesday night...

quiet weather will continue across the area through Wednesday before
precip begins to move into the region Wednesday night. Upper ridging
currently over the mid-mississippi and ohio valleys will shift
eastward through Wednesday as elongated N s-oriented troughing moves
into the great plains. This will support dry conditions through at
least Wednesday afternoon as mid upper-level clouds gradually spread
across the region.

The trough and associated surface cold front will near the western
cwa toward daybreak Thursday. With the region splitting the best mid-
level forcing to the north and the south, only pockets of light rain
or drizzle are expected overnight Wednesday night. Confidence on
coverage remains low, so will continue with slight chance pops
during this time.

Kluber

Long term
202 pm cst
Thursday through Tuesday...

a cold front is expected to move across area at the start of the
period on Thursday. Once this front passes, temperatures will
cool back to near seasonal averages for Friday and through the
holiday weekend. While there will also be some chances for
precipitation continuing on Thursday, it appears that it will be
light and likely remain in the form of rain.

A large upper trough will set up over the south central CONUS on
Thursday. This feature is forecast to drive a northward shifting
significant area of surface low pressure across the eastern conus
on Friday. While some light precipitation (possibly in the form
of light snow) could continue over my eastern CWA Thursday night
into early Friday morning, it does not appear to be a big
accumulating event for the area. Much of the heavier precipitation
will remain east of the area.

Aside from the precipitation chances through Thursday night, it
appears that the area will remain mainly dry, with seasonal
temperatures in the 30s through the upcoming weekend. Model spread
increases substantially christmas week, and this appears to be
due to the transition to a more active weather pattern as an upper
trough digs across the western conus. As we transition into this
more active period, some forecast guidance is hinting at a
disturbance shifting over the area on christmas day. This could
could produce a period of snow on christmas day for portions of
the area. This is still a week out, so confidence is not high with
this producing a white christmas, but at this time there is still
a chance for such.

Kjb

Aviation
For the 00z tafs...

no significant weather related aviation concerns expected at the
local terminals through tomorrow. Some models do show a lower end
MVFR ovc during the day tomorrow, however, satellite imagery and
upstream observations would suggest the upstream air mass is
fairly dry still. Chances of MVFR CIGS should begin to increase
toward the end of this TAF cycle Wednesday evening, however the
best chances look to be just beyond this TAF cycle, so opted to
just maintain the few020 deck Wednesday evening for now.

- izzi

Lot watches warnings advisories
Il... None.

In... None.

Lm... None.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BHRI3 - Burns Harbor, IN 16 mi34 min SSE 7 G 8.9 38°F 1016.9 hPa
MCYI3 - Michigan City, IN 18 mi44 min SE 16 G 18 37°F 25°F
CMTI2 - 9087044 - Calumet, IL 20 mi44 min S 7 G 8.9 37°F 1016.2 hPa29°F
CHII2 - Chicago, IL 20 mi44 min SSW 11 G 12 39°F 31°F
JAKI2 21 mi134 min WSW 7 G 11 38°F
CNII2 22 mi29 min S 5.1 G 12 37°F 28°F
FSTI2 25 mi134 min SSW 17 38°F
SJOM4 - St. Joseph, MI 41 mi74 min SSE 5.1 G 8.9 35°F 1018.3 hPa (-1.3)
WHRI2 - Waukegan Harbor, IL 47 mi34 min SSW 11 G 14 37°F

Wind History for Calumet Harbor, IL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Gary Regional Airport, IN21 mi29 minSSW 610.00 miClear36°F26°F70%1016.9 hPa
Michigan City Municipal Airport, IN23 mi19 minS 810.00 miFair34°F23°F65%1017.3 hPa

Wind History from GYY (wind in knots)
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Last 24hrCalmCalmCalmCalmCalmCalmCalmSE7SE4SE4SE6SE7S12SE5S9SE6S9S5SE3S4SE4S7SE4S6
1 day agoW3W6W5W4W6W7W6W9W6W9NW10NW10
G20
NW12N9N8N7444CalmCalmW4CalmCalm
2 days agoN5N4N5N5NE5N4CalmCalmCalmCalm43SW5W8W9W7W8W8W7W10W7SW4SW7SW7

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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wmap_A
GOES 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

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Wind Forecast for Chicago, IL (23,6,7,8)
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Ground Weather Radar Station Chicago, IL
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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.