Wednesday, November22, 2017 L-36.com


Marine Weather and Tides
North Riverside, IL

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 6:48AMSunset 4:26PM Wednesday November 22, 2017 2:25 PM CST (20:25 UTC) Moonrise 11:09AMMoonset 8:57PM Illumination 17% Phase: Waxing Crescent; Moon at 4 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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LMZ741 Winthrop Harbor To Wilmette Harbor- Wilmette Harbor To Northerly Island- Northerly Island To Calumet Harbor- 923 Am Cst Wed Nov 22 2017
Rest of today..West winds 10 to 15 kt. Mostly Sunny. Waves 2 to 4 ft subsiding to 1 to 3 ft.
Tonight..Southwest winds 10 to 20 kt. Mostly cloudy. Waves 1 to 3 ft.
Thursday..Southwest winds 10 to 20 kt. Partly Sunny in the morning then clearing. Waves 1 to 3 ft.
Thursday night..Southwest winds 10 to 20 kt. Mostly clear. Waves 1 to 3 ft.
LMZ741 Expires:201711222300;;798512 FZUS53 KLOT 221523 NSHLOT NEARSHORE MARINE FORECAST National Weather Service Chicago/Romeoville IL 923 AM CST Wed Nov 22 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. LMZ740>742-222300-

7 Day Forecast for Marine Location Near North Riverside, IL
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location: 41.84, -87.82     debug


Area Discussion for - Chicago, IL
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Fxus63 klot 221842
afdlot
area forecast discussion
national weather service chicago romeoville, il
1242 pm cst Wed nov 22 2017

Short term
1242 pm cst
through Friday...

high pressure will move east of the area tonight with light
southerly winds developing. The combination of the light south
winds and more so mid-high level overcast should help keep temps
much milder tonight vs last night. Skies should clear out
thanksgiving day with temps milder than today.

Thursday night into Friday, strong low pressure will track east
across southern canada leading to increasingly strong southerly
winds Thursday night and especially Friday. Gulf of mexico is shut
down for business with respect to moisture return, so with the
southerly winds only advecting recycled continental air north,
stratus seems unlikely. Given the expected sunshine and strong
low level winds encouraging mechanical mixing of the warmer air
aloft to the surface, strongly suspect guidance temps aren't warm
enough Friday. The forecast 925mb temps Friday afternoon in the
ecmwf, gfs, and NAM all support highs reaching the lower 60s.

While i'm not comfortable going that warm yet, did adjust highs up
considerably from the blended initialization.

- izzi

Long term
1242 pm cst
Friday night through Wednesday...

main storm track through the long term period will remain well
north of our area, which should result in little if any precip
through the period and a temperature roller coaster. Cold front
will knock temps down some over the weekend, generally in the ball
park of seasonal norms, before the next powerful cyclone develops
and results in more strong southerly winds and unseasonable warmth
early next week. Once again, forecast 925mb temps from the GFS and
ecmwf would support highs well into the 50s to near 60 Monday.

Nudged temps upward in that direction, but still likely far too
cool if current progs verify. Some differences arise between the
ecmwf and GFS heading into the middle of next week, but generally
near to above normal temps and dry conditions look to be the rule
at this point.

- izzi

Aviation
For the 18z tafs...

no weather concerns through the TAF cycle withVFR conditions and
winds less than 10kt expected.

- izzi

Marine
1242 pm cst
active pattern expected on the lake the next week. First, as high
pressure moves east tonight, southerly winds will develop and
freshen up over night into Thursday. Gales look unlikely, but
winds could push 30kt for a time thurs morning over northern
portions of the lake. Southerly winds will really ramp up later
Thursday night into Friday as deep cyclone tracks east toward the
upper great lakes region. Guidance continues to support gale force
winds and will be hoisting a gale watch for the open lake for this
southerly wind event. Cold front will move across the lake Friday
night, but with only a modest push of cold air in the wake of the
front, the northwest winds will probably top out just below gales
Saturday. Another period of strong southerly winds and possible
gales look to be on tap for Sunday night into Monday.

- 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
CNII2 11 mi25 min WNW 7 G 11 35°F 12°F
OKSI2 12 mi85 min NW 1.9 35°F
FSTI2 13 mi85 min SW 9.9 33°F
CHII2 - Chicago, IL 14 mi35 min W 8.9 G 9.9 33°F 11°F
JAKI2 14 mi85 min WNW 6 35°F
CMTI2 - 9087044 - Calumet, IL 17 mi37 min WSW 4.1 G 8 34°F 1024.5 hPa12°F
WHRI2 - Waukegan Harbor, IL 36 mi45 min WSW 8 G 11 32°F
BHRI3 - Burns Harbor, IN 38 mi24 min WNW 6 G 11 33°F 1025.7 hPa
MCYI3 - Michigan City, IN 49 mi35 min W 5.1 G 7 32°F 21°F

Wind History for Calumet Harbor, IL
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W6
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W7
G14
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NW12
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G11
W9
G13
NW10
G17
NW11
G17
NW9
G16
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G15
W7
G13
NW6
G10
W6
G11
W7
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W5
G8
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G11
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1 day
ago
S17
G23
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G23
S14
G22
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G23
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G27
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G26
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G22
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G29
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G25
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G27
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G21
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G16
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G12
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2 days
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SW7
G15
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G13
W8
G15
SW8
G13
SW7
G10
SW6
G11
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G11
SW4
G7
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G13
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G15
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G18
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G18
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G23
S13
G19
S17
G22
S19
G25

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Chicago, Chicago Midway Airport, IL5 mi92 minWNW 4 G 1410.00 miA Few Clouds33°F14°F45%1027.7 hPa
Chicago, Chicago-O'Hare International Airport, IL11 mi34 minWSW 710.00 miA Few Clouds34°F15°F46%1025.6 hPa
Chicago / Wheeling, Pal-Waukee Airport, IL19 mi33 minW 710.00 miFair34°F12°F42%1026.2 hPa
Lewis University Airport, IL22 mi50 minW 410.00 miFair33°F17°F53%1025.7 hPa
Chicago / West Chicago, Dupage Airport, IL24 mi33 minW 810.00 miFair33°F17°F52%1025.8 hPa

Wind History from MDW (wind in knots)
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Last 24hrNW17
G22
NW13NW12NW6NW8N13NW13NW9NW11
G18
NW11N12NW10NW8N8NW9NW8W7NW5NW6NW5W6W7W4
G14
SW6
1 day agoSW18
G26
S17
G27
S17
G25
S16
G27
S16
G26
SW18
G31
S15
G26
S20
G28
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G28
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G25
SW15SW15S11SW12SW11SW10SW13SW12W12
G21
W12W10W13
G21
W12NW12
2 days agoW11
G16
W9W9SW8SW8W8SW9SW7SW7SW9SW10SW8SW8SW10SW8SW10SW10SW12SW13
G22
SW14
G19
SW19
G24
SW15
G23
SW16
G23
SW16
G23

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 (15,3,4,5)
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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.