Saturday, September23, 2017 L-36.com


Marine Weather and Tides
Hammond, IN

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 6:38AMSunset 6:45PM Saturday September 23, 2017 6:00 AM CDT (11:00 UTC) Moonrise 9:59AMMoonset 8:57PM Illumination 8% Phase: Waxing Crescent; Moon at 3 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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LMZ743 Calumet Harbor To Gary-gary To Burns Harbor- Burns Harbor To Michigan City- 300 Am Cdt Sat Sep 23 2017
Today..South winds 5 to 10 kt becoming northeast 10 to 15 kt in the early afternoon. Sunny. Waves 1 to 2 ft.
Tonight..East winds around 10 kt becoming southeast by late evening. Clear. Waves 1 to 2 ft.
Sunday..Southeast winds 5 to 10 kt becoming northeast 10 to 15 kt in the early afternoon. Sunny. Waves 1 to 2 ft.
Sunday night..East winds around 10 kt becoming southeast by late evening. Clear. Waves around 1 ft.
LMZ743 Expires:201709231530;;799841 FZUS53 KLOT 230800 NSHLOT NEARSHORE MARINE FORECAST National Weather Service Chicago/Romeoville IL 300 AM CDT Sat Sep 23 2017 For waters within 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 waves, along with the average height of the highest 10 percent of the waves which will occasionally be encountered. LMZ743>745-231530-

7 Day Forecast for Marine Location Near Hammond, IN
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location: 41.62, -87.49     debug


Area Discussion for - Chicago, IL
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Fxus63 klot 230939
afdlot
area forecast discussion
national weather service chicago romeoville, il
439 am cdt Sat sep 23 2017

Short term
328 am cdt
through tonight...

main forecast concerns challenges are with continued warmth and
near to record breaking heat, and low potential for an isolated
shower this afternoon across north central il.

Pattern still supportive of mainly dry quiet conditions across
the region today, as large upper level ridge remains in place.

With this in place, focus for precip development will stay tied to
the stronger and more energetic westerlies across the central and
northern conus. However, similar to yesterday, there remains a
possibility for isolated convection later this afternoon. Very low
chance, but still a possibility as there will be some weak upper
level support in place. This coinciding with some possible low
level convergence and steepening low level lapse rates across
northern illinois, can't rule out an isolated shower or an isolate
storm. With low confidence, have excluded at this time though. In
this location, scattered CU will support partly cloudy skies in
the afternoon. However, don't think either will limit expected
warmth today. Latest trends and guidance now supporting another
hot day today, with temps likely getting well into the 90s across
much of northern illinois and northwest indiana. Did raise high
temps today to reflect latest trends, and think record high temps
at both rockford and chicago may be reached today. Locations near
the lake will stay slightly cooler though, as lake breeze
development is likely by around midday. These temps and
anticipated dew points will support heat index values in the mid
to upper 90s.

Rodriguez

Long term
328 am cdt
Sunday through Friday...

large upper level ridge and surface high will remain in place
late in the weekend, with similar conditions expected to persist.

As some slight moderation to the air mass is expected, temps will
not be as warm Sunday. Still think many locations will have a
chance at reaching the 90 degree mark though. By early next week,
upper level ridge shifts to the east while a trough moves through
the central conus. As this trough and surface low push east
through the region, will see precip chances returning Tuesday into
Wednesday. This will also be an end to the warmth, as a much
cooler air mass will move in behind this system.

Rodriguez

Aviation
For the 06z tafs...

expect generallyVFR conditions, outside of some patchy MVFR fog
early this morning, and light southerly winds this morning. Expect
these conditions to persist through midday or early afternoon,
but then expect lake breeze development to impact the terminals
today. Some possible slight time differences with the wind shift
today, however, an earlier wind shift still appears reasonable.

Dry conditions should continue but am monitoring for possible
isolated showers with a very low chance of a thunderstorm across
northern illinois this afternoon. Very low confidence and not
worthy of including in the tafs at this time, but will monitor
this potential later today.

Rodriguez

Marine
438 am cdt
southerly winds in place across the lake as high pressure is
still situated to the east, and while low pressure is over
ontario. This low will continue to the northeast, with this high
not really making much movement to the east through the weekend
into early next week. As this high remains in place, additional
trough of low pressure will be in place to the west, helping to
maintain a southerly direction for much of the period.

Rodriguez

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
CMTI2 - 9087044 - Calumet, IL 8 mi42 min S 1.9 G 2.9 74°F 1016.9 hPa69°F
JAKI2 12 mi120 min WSW 1.9 77°F
CNII2 17 mi30 min 79°F
BHRI3 - Burns Harbor, IN 18 mi56 min S 5.1 G 7 74°F 1017.9 hPa
OKSI2 21 mi180 min N 1 84°F
CHII2 - Chicago, IL 21 mi40 min S 8.9 G 9.9 80°F 66°F
FSTI2 26 mi120 min SW 8.9 80°F
45170 29 mi20 min SSE 1.9 G 3.9 72°F 71°F69°F
MCYI3 - Michigan City, IN 32 mi40 min SE 7 G 8 75°F 67°F
45174 37 mi20 min SSW 3.9 G 3.9 74°F 72°F69°F

Wind History for Calumet Harbor, IL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Gary Regional Airport, IN4 mi75 minSSE 310.00 miClear66°F66°F100%1017.6 hPa
Lansing Municipal Airport, IL7 mi65 minN 07.00 miFair67°F67°F100%1017.6 hPa
Chicago, Chicago Midway Airport, IL18 mi67 minS 410.00 miFair76°F66°F74%1015.8 hPa

Wind History from GYY (wind in knots)
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Last 24hrCalmS3S345SW7SE7SE8SE6S5SE5E6E5E4E4CalmCalmCalmCalmCalmCalmCalmCalmCalm
1 day agoCalmCalmSW3SW5S344S7SW44SW5S5S5CalmCalm4CalmSE3SE3CalmCalmCalmCalmS3
2 days ago4SE7SE8SE12S12SE6S4SW11S6S10S7
G19
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G17
S7SE5S6S7S4CalmS4S3S3S3CalmS4

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 Midwest    EDIT
Geos

Wind Forecast for Chicago, IL (7,2,3,4)
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Ground Weather Radar Station Chicago, IL
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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.