Friday, October18, 2019 L-36.com


Marine Weather and Tides
Whiting, IN

Version 3.4
NOTICE
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:04AMSunset 6:06PM Friday October 18, 2019 6:54 PM CDT (23:54 UTC) Moonrise 9:16PMMoonset 11:41AM Illumination 72% Phase: Waning Gibbous; Moon at 20 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 Expires:201910190330;;907088 Fzus63 Kmkx 181953 Glflm Open Lake Forecast For Lake Michigan National Weather Service Milwaukee/sullivan Wi 253 Pm Cdt Fri Oct 18 2019 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.. Low pressure of 29.4 inches over eastern south dakota will lift into ontario tonight. The surface weakening surface trough will track across lake michigan Saturday afternoon and feature scattered rain showers. Steady southerly winds ahead of this system will weaken with the trough passage Saturday evening. Weak high pressure of 29.8 inches will then slide across the great lakes through Sunday night. A strong low pressure system of 29.3 inches will move from the central plains to north of lake superior early next week. This system may bring southerly gale force winds to lake michigan on Monday and southwesterly gales Monday night through Tuesday. && lmz080-669-671-673-675-777-779-870-872-874-876-878-190330- 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- 253 pm cdt Fri oct 18 2019 sheboygan wi to pentwater mi south...
Tonight..Southeast winds 15 to 25 kt becoming south. Waves 3 to 5 ft.
Saturday..South winds 15 to 25 kt diminishing to 10 to 20 kt. Waves 4 to 6 ft occasionally to 8 ft.
Saturday night..South winds 10 to 15 kt veering to northwest 5 to 10 kt. Waves 3 to 5 ft subsiding to 1 to 2 ft.
Sunday..North winds 5 to 10 kt becoming northeast. Waves 1 ft or less.
Sunday night..East winds 10 to 20 kt becoming southeast to 30 kt overnight. Waves 1 to 3 ft building to 4 to 6 ft occasionally to 8 ft.
Monday..Southeast gales to 35 kt becoming south. Chance of showers in the morning, then showers likely in the afternoon. Waves 6 to 9 ft occasionally to 12 ft.
Monday night..Southwest gales to 35 kt. Chance of showers. Waves 5 to 8 ft occasionally to 10 ft.
Tuesday..Southwest gales to 35 kt becoming west. Waves 7 to 10 ft occasionally to 13 ft.
Wednesday..West winds 15 to 25 kt. Waves 5 to 8 ft occasionally to 10 ft.
LMZ779


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 182341
afdlot
area forecast discussion
national weather service chicago romeoville, il
641 pm cdt Fri oct 18 2019

Short term
234 pm cdt
through Saturday night...

not much shaking on the weather front here this afternoon with
just some passing high level cirrus cloud cover occasionally
muddying up the sky. Just some occasional gusts to around 20 mph
as we're mixing some higher momentum aloft down to the ground, but
these will subside quickly with the loss of heating this morning.

Based on upstream satellite trends, it's looking like we may even
get rid of some of the ongoing cirrus cloud cover tonight
resulting in a period of mostly clear conditions with slackening
winds. As a result, dropped low temperatures a bit into the upper
30s and lower 40s in the typical "cool spots" outside of the
urbanized corridors. Not too worried about frost given these
temperatures, but suppose some very isolated pockets aren't out
the realm of possibility.

Tomorrow we'll be turning our attention to a lead shortwave which
will begin to press into the region during the afternoon and
evening hours. Until then, dry conditions are expected to prevail
with gradually increasing mid-level cloud cover into the
afternoon. This should allow temperatures to warm into mid and
possibly even upper 60s across the region. Rain chances will
gradually tick upwards into the mid-late afternoon hours, but
mainly for locales near and west of i-39. Overall, things not
looking overly impressive from a precipitation standpoint with
very dry mid-level air in place ahead of this system likely to
work against widespread precipitation. As a result, have pared
pops back mainly across our western locales into the early
evening, but will leave some slight chances for showers into the
chicago area during the early-mid evening hours.

Winds look to fall off notably Saturday night with the passage of
this initial wave, but low-level moisture will remain in great
supply. Forecast soundings depict a favorable environment for low
stratus formation into Sunday morning. Things may stay mixed up
just enough to keep this stratus deck from working down into a
dense area of fog and, as a result, no mention in the gridded
forecast at this time due to uncertainties, but something to keep
an eye on.

Carlaw

Long term
234 pm cdt
Sunday through Friday...

next system of interest is a potent vort MAX and associated area
of low pressure which is expected to pinwheel into the region
Sunday night and into Monday. Developing gusty southeasterly
surface flow ahead of this system will encourage additional
poleward moisture transport. That said, the best upper-level
dynamics associated with this system from an upper-jet perspective
look to remain displaced both immediately south and north of the
region. This, combined with a lack of appreciable surface-based
instability should help greatly curtail the threat for strong-
severe storms with this system. Greatest precipitation chances
look to move in into Monday morning and early afternoon hours
(with a threat for some embedded thunder), but this will be a
quick hit as the warm conveyor rapidly peels east of the area
through Monday afternoon and evening. As a result, while there
will be a window for some locally more moderate to even heavier
rainfall at times, the quick-hitting nature of this system should
keep any associated flood threat to a minimum.

The main concern with this latest system will be from the wind,
with a potential for wind gusts Monday and into Tuesday to rise
into the 30-40 mph range for a period. At this time, gusts look to
remain perhaps just under wind advisory criteria, but either way
looks like a period of rather breezy conditions to start off next
week.

There could be some light wrap around precip, though this does
appear to just graze the northwest portion of our area. Given
the more amplified upper flow, brief colder air and generally
dry weather is expected in the wake of this system outside of
any NW flow shortwave activity that will drive another weaker
surface reflection front across the region mid week.

Another system looks to impact the area during the later part of
next week, but still a lot of uncertainty with regards to
track intensity and resultant impacts to our weather. It does
appear to bring another brief cool shot.

Carlaw kmd

Aviation
For the 00z tafs...

quietVFR aviation continues this evening, and will persist
through Saturday as well. Only forecast concern is the potential
for some light showers late Saturday Saturday evening, though
models continue to trend drier and less enthusiastic with
potential for any significant precip at that time.

In the near term, surface high pressure has moved east of the
forecast area, with breezy south-southeast winds across the
midwest in advance of a surface cold frontal trough slowly
advancing across the plains. Winds have already diminished with
sunset this evening, and will remain from the south-southeast
through the night under mainly clear skies. 30-40 kt low level jet
will remain focused into NW il overnight, limiting llws potential
largely to areas west of rfd and chicago terminals. Mid-clouds
will gradually spread into the region Saturday ahead of the cold
front, with south winds generally around 10 kts.VFR mid-deck will
thicken up by Saturday evening, with the potential for a few
showers or sprinkles into rfd toward 00z, and for the chicago
terminals after dark. As indicated above, dry air mass and
weakening forcing with a damping short wave disturbance do not
look to support a significant rain threat, especially for chicago
terminals, and at this distance have maintained dry tafs.

Surface cold front is expected to move through the terminals mid-
late Saturday evening, with a wind shift to the west, but with not
much push behind it.

Ratzer

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
CHII2 - Chicago, IL 14 mi35 min SE 12 G 13 55°F 49°F
CNII2 16 mi25 min SSE 4.1 G 8 53°F 44°F
CMTI2 - 9087044 - Calumet, IL 17 mi55 min SE 6 G 8 58°F 1013.2 hPa (-1.9)40°F
BHRI3 - Burns Harbor, IN 20 mi52 min S 4.1 G 8 58°F 1014.6 hPa
45170 21 mi25 min SE 5.8 G 7.8 55°F 53°F1 ft45°F
45174 24 mi25 min E 9.7 G 14 50°F2 ft1011.4 hPa
MCYI3 - Michigan City, IN 24 mi35 min ESE 4.1 G 6 56°F 40°F
45026 - St. Joseph, MI 37 mi55 min SE 5.8 G 9.7 56°F 57°F1 ft1015 hPa41°F
45186 41 mi35 min ESE 12 G 16 50°F 49°F2 ft
SJOM4 - St. Joseph, MI 45 mi55 min Calm G 1 55°F 1015.2 hPa (-1.7)

Wind History for Calumet Harbor, IL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Gary Regional Airport, IN20 mi2.2 hrsSE 810.00 miMostly Cloudy61°F35°F39%1014.9 hPa

Link to 5 minute data for KGYY

Wind History from GYY (wind in knots)
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Last 24hr4NE6SE5SE4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmS5SE7SE8W8S9SE5SE8SE4
1 day agoW8
G20
W7W9W7W5W4W6W8W7W5W5W8W8W7W10NW10NW9NW12N15NE14NE11NE6NE8E5
2 days agoSW9W22W13
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Tide / Current Tables for
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Tide / Current Tables for
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Weather Map
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GEOS Local Image of Midwest    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.
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Wind Forecast for Chicago, IL (19,4,5,8)
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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.