Tuesday, March28, 2017 L-36.com


Marine Weather and Tides
Whiting, IN

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 6:36AMSunset 7:13PM Tuesday March 28, 2017 8:28 PM CDT (01:28 UTC) Moonrise 7:12AMMoonset 8:02PM Illumination 2% Phase: Waxing Crescent; Moon at 2 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 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 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- 607 Pm Cdt Tue Mar 28 2017 Sheboygan Wi To Pentwater Mi South...
.dense fog advisory in effect until 9 am cdt Wednesday...
Tonight..North winds 10 to 20 kt becoming east 15 to 25 kt. Areas of dense fog. Waves 2 to 4 ft.
Wednesday..East winds 15 to 25 kt becoming northeast. Areas of dense fog in the morning. Waves 3 to 5 ft occasionally to 7 ft.
Wednesday night..Northeast winds 15 to 25 kt becoming east to 30 kt. Chance of rain in the evening...then rain and snow likely overnight. Waves 3 to 5 ft occasionally to 7 ft building to 5 to 8 ft occasionally to 10 ft.
Thursday..East winds to 30 kt increasing to gales to 35 kt. Rain. Waves 5 to 8 ft occasionally to 10 ft.
Thursday night..East winds to 30 kt becoming northeast 15 to 25 kt. Rain in the evening...then chance of rain and drizzle overnight. Waves 4 to 6 ft occasionally to 8 ft.
Friday..Northeast winds to 30 kt becoming north. Chance of rain. Waves 4 to 6 ft occasionally to 8 ft.
Friday night..North winds 15 to 25 kt becoming northeast 10 to 20 kt. Waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to 5 ft occasionally to 7 ft.
Saturday..North winds 10 to 15 kt diminishing to 5 to 10 kt. Waves 1 to 3 ft.
Sunday..East winds 5 to 10 kt increasing to 10 to 15 kt. Waves 1 ft or less.
LMZ779 Expires:201703290315;;232081 FZUS63 KLOT 282307 AAA GLFLM OPEN LAKE FORECAST FOR LAKE MICHIGAN...UPDATED NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 607 PM CDT TUE MAR 28 2017 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 AT 30.5 INCHES OVER NORTHERN MANITOBA AND AN ASSOCIATED RIDGE OF HIGH PRESSURE EXTENDING SOUTH ACROSS THE WESTERN GREAT LAKES TONIGHT WILL SLIDE OFF TO THE EAST WEDNESDAY. THIS WILL ALLOW LOW PRESSURE AT 29.6 INCHES OVER THE THE SOUTHERN PLAINS TO MOVE NORTHEAST TO THE MID MISSISSIPPI VALLEY THURSDAY NIGHT...THEN ACROSS THE LOWER GREAT LAKES FRIDAY. HIGH PRESSURE AT 30.2 INCHES WILL THEN BUILD INTO THE WESTERN GREAT LAKES SATURDAY AND BUILD EAST TO THE CENTRAL LAKES REGION SUNDAY. LMZ080-669-671-673-675-777-779-870-872-874-876-878-290315-

7 Day Forecast for Marine Location Near Whiting, IN
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location: 41.9, -87.31     debug


Area Discussion for - Chicago, IL
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Fxus63 klot 281956
afdlot
area forecast discussion
national weather service chicago/romeoville, il
256 pm cdt Tue mar 28 2017

Short term
157 pm cdt
through Wednesday...

main concern for the short term forecast period will be timing of
pcpn spreading from west to east across the region tomorrow.

Conditions will remain quiet through the remainder of the
afternoon and overnight as a ridge of high pressure builds
across the upper mississippi valley to the upper great lakes,
while low pressure begins to develop over the south high plains.

Prevailing enely-nly will keep wind flow off of lake michigan,
with lakefront locations remaining cooler than inland locations.

Highs today should range from around 40 f near the lake to around
50 f well inland. The only concern of note through the night will
be the amount of cloud cover across the region. Latest satellite
imagery shows some drier air moving swd through SRN wi as the
ridge builds ewd, far il could see at least some partial clearing
overnight, which, in turn, would allow for temps to drop off a
little faster than the remainder of the area. Lows tonight should
range from the middle 30s along the wi border to the upper 30s to
low 40s south of i-80. Any partial clearing of cloud cover should
be short lived as low pressure developing over the south high
plains deepens and tracks to the northeast as the parent upper low
lifts into the central plains through the day tomorrow. While sfc
flow should trend to more sely, mid level toughing should help
begin to draw some gulf moisture northward. Weak short wave energy
lifting out ahead of the upper trough will help to initial some
pcpn across the area, with pcpn chances generally spreading from
west to east through the day, possibly beginning over the rfd area
by early afternoon and spreading to the chicago area by late
afternoon or early evening. While the upper low begins to lift out
of the desert southwest tomorrow, upper ridging will build over
the upper midwest, allowing for temperatures a few degrees higher
Tuesday than were seen on Monday. While lakefront locations will
still remain relatively cool, with highs in the lower 40s, inland
locations should see highs in the lower to middle 50s.

Long term
221 pm cdt
Wednesday night through Tuesday...

the upper level split flow pattern will continue this forecast
period with series of upper level systems progressing west to east
across the conus. Hence main forecast concerns will be rain with
scattered thunder Wednesday night through Thursday night with the
next approaching upper low... Followed by rain chances returning
with the next upper low Monday-Tuesday.

Upper level low currently near the 4 corners area will work slowly
east into the southern plans Wednesday. Both rising heights aloft
ahead of the low combined with relatively dry anticyclonic boundary
layer flow around slowly departing hudson bay surface high may
help to slow increase of precip coverage/intensity into northern
il initially. Weak upper shortwave riding a top the shortwave
riding combined with modest isentropic ascent may help squeeze out
sprinkles/patchy light rain as early as afternoon over the
rfd/i-39 corridor and toward the evening rush across the chicago
metro.

Better rain to get going overnight Wednesday into Thursday as the
column saturates and given broader ascent ahead of the northward
moving warm front. 12z gfs/nam QPF amounts trending upward from
previous runs with 48 hr rains of 1.0 to 1.25 inches wed-fri
seeming reasonable now. While mid level lapse rates remain more
impressive to our south, can't rule out some rumbles of thunder,
particularly southern sections of the forecast area late Wed night
and Thursday... And the entire area by Thursday afternoon/evening
as lapse rates steepen slightly as the surface low reaches to
just south of kankakee by Thursday evening per gfs/canadian gem
solutions.

Given such synoptic set up by Thursday afternoon/evening also would
expect fairly tight nne gradient across northern il and hence a
brisk nne flow with gusts 25-30 mph... Perhaps as high 35 mph at
the lakefront.

Low slides slowly off to the east Friday. Weak surface ridging
allows for residual low level moisture to persist much of the day
Friday however before rising heights aloft and associated
subsidence helps scour out low level moisture Friday night into
Saturday. Weekend shaping up generally dry with next chance of
rain arriving later Monday as next in the series of upper troughs
tracks well south across the southern plains but then lifts
northeast across the ohio valley into Tuesday.

Ed f

Aviation
For the 18z tafs...

ceilings remain the primary forecast challenge and even the short
range guidance continues to have a poor handle on the details of
the trends. The observed trends this morning have been for a very
slow lifting/improvement of cigs, and anticipate that this should
be the trend for the remainder of the afternoon and through the
night. Looking at sounding information, an inversion should remain
in place through the period, which would inhibit vertical mixing
down of drier air aloft, so have maintained the MVFR CIGS through
the night for the chicago area terminals. With high pressure
building across the upper mississippi valley and upper great
lakes, winds should generally remain nely, so flow will remain off
the lake for the chicago area terminals, helping to keep the lower
cigs in place. Latest satellite trends indicate some upstream
scattering of cloud cover over SRN wi which coincides with the
drier air. So, have improved CIGS at rfd toVFR, given the drier
advection. The greatest uncertainty to the forecast will be for
cigs tomorrow morning. With an inversion becoming stronger
overnight, and winds remaining off of the lake, there is a chance
that CIGS will not have an opportunity to improve toVFR tomorrow
morning, but confidence is relatively low at this time to keep the
MVFR CIGS through the morning hours tomorrow. So, have maintained
an improving trend for CIGS for tomorrow, but there is a chance
that CIGS will need to be lowered in later updates. Otherwise,
have relatively high confidence in wind trends given the
persistence of the ridge of high pressure moving across the upper
mississippi valley and upper great lakes while low pressure
deepens over the central plains tomorrow. This pattern would
suggest a trend to more ely winds tomorrow.

Marine
256 pm cdt
a north-south oriented ridge of high pressure across the western
great lakes will slowly move off to the east tonight and
Wednesday. This will allow for low pressure over the southern
plains to lift northeast into the mid mississippi valley
Wednesday night into Thursday. This low will then slowly move
northeast across the eastern great lakes Friday while a ridge of
high pressure builds back into the lake michigan basin Saturday...

moving over the lake Saturday night into Sunday.

Strongest winds of the period will be felt late Wednesday night
through Friday (northeast winds to 30 kts) as the low passes to
the south of lake michigan.

Ed f

Lot watches/warnings/advisories
Il... None.

In... None.

Lm... Small craft advisory... In nearshore waters until 9 pm Tuesday.

Small craft advisory... Il nearshore waters until 3 am Wednesday.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CHII2 - Chicago, IL 14 mi39 min N 8 G 8.9 37°F 37°F
CNII2 16 mi29 min N 6 G 9.9 38°F
JAKI2 16 mi149 min NNE 9.9 39°F
OKSI2 17 mi89 min N 2.9 38°F
CMTI2 - 9087044 - Calumet, IL 17 mi41 min NNW 9.9 G 12 38°F 1021.7 hPa38°F
FSTI2 19 mi89 min N 18 37°F
BHRI3 - Burns Harbor, IN 20 mi49 min NE 6 G 8 39°F 1022.7 hPa
MCYI3 - Michigan City, IN 24 mi39 min NNE 8 G 8.9 38°F 38°F
WHRI2 - Waukegan Harbor, IL 42 mi49 min NNE 12 G 13 34°F
SJOM4 - St. Joseph, MI 45 mi29 min NNE 5.1 G 8 38°F 1022.7 hPa

Wind History for Calumet Harbor, IL
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G8

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Gary Regional Airport, IN20 mi44 minN 910.00 miOvercast41°F37°F87%1022.7 hPa

Wind History from GYY (wind in knots)
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Last 24hrN5N6N6N7N7NW11N6N10N12N14N7N14N15N15N15N12N10N10
G20
N12N10N12N10N8N9
1 day ago--SW10SW7SW4SW4SW4SW5W4W8W5SW5CalmCalmCalmNE6NE8NE6NE6CalmN6N6N6N7NE6
2 days agoCalmCalmE7SE8SE7E7SE6SE7SE9SE10SE12SE9SE12SE8SE7S6SW9SW12SW12W10
G20
W10
G20
SW12W12SW12

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
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IR Satellite Image from GEOS
east_satellite

GOES Local Image of Midwest    EDIT
Geos

Wind Forecast for Chicago, IL (21,6,7,8)
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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.