Thursday, October18, 2018 L-36.com


Marine Weather and Tides
Highland Park, IL

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 7:07AMSunset 6:05PM Thursday October 18, 2018 1:26 PM CDT (18:26 UTC) Moonrise 3:30PMMoonset 12:48AM Illumination 68% Phase: Waxing Gibbous; Moon at 9 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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LMZ740 Winthrop Harbor To Wilmette Harbor- Wilmette Harbor To Northerly Island- Northerly Island To Calumet Harbor- 953 Am Cdt Thu Oct 18 2018
Rest of today..Southwest winds 10 to 15 kt increasing to 10 to 20 kt. Sunny. Waves 1 to 3 ft.
Tonight..Southwest winds 15 to 25 kt. Clear. Waves 1 to 3 ft.
Friday..Southwest winds 20 to 25 kt increasing to 30 kt. Slight chance of showers. Waves 2 to 4 ft. A small craft advisory will likely be needed.
Friday night..Southwest winds to 30 kt becoming northwest 20 to 25 kt after midnight. Slight chance of showers. Waves 2 to 4 ft. A small craft advisory will likely be needed.
LMZ740 Expires:201810182115;;372989 FZUS53 KLOT 181453 NSHLOT NEARSHORE MARINE FORECAST National Weather Service Chicago/Romeoville IL 953 AM CDT Thu Oct 18 2018 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>742-182115-


7 Day Forecast for Marine Location Near Highland Park, IL
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location: 42.18, -87.81     debug


Area Discussion for - Chicago, IL
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Fxus63 klot 181719
afdlot
area forecast discussion
national weather service chicago romeoville, il
1219 pm cdt Thu oct 18 2018

Short term
1217 pm cdt
through Friday...

mainly quiet dry conditions continue into tonight, as high
pressure remains situated across the region. Expect upstream mid
level energy ahead of larger upper level trough to begin to usher
in mid high clouds later tonight into Friday. The arrival of this
energy, and approaching surface trough boundary, will support
increasing chances for scattered rain showers during the day on
Friday. Confidence on coverage is slightly lower at this time, but
do think most locations will see at least periodic sprinkles or
light rain showers.

Rodriguez

Long term
244 am cdt
Friday through Wednesday...

for the longer term forecast period, general weather trends are
expected to be persistent below normal temperatures. Very windy
conditions with scattered showers are expected for Friday and
Saturday.

A strong shortwave is expected to over-top a broad upper ridge,
decreasing the amplitude of the upper level pattern as it drops
across the upper midwest on Friday while pushing a cold front across
the area. In advance of the approaching sfc cold front, as
strengthening swly pressure gradient and daytime mixing will help
tap into 35-40 kt winds at the top of the mixed layer. Expect that
Friday will be a rather windy day, however, increasing cloud cover
in the broad isentropic lift of the warm sector may help limit the
max potential mixing, with gusts to arnd 30-35 mph possible through
the day. There is a chance for some scattered showers, mainly
diurnally driven, during the daytime hours. However, forecast
soundings indicate quiet a bit of dry air in the lower levels, so
any pcpn will likely be light and patchy.

Strong cold air advection will set up across the region Friday night
into Saturday following the passage of the cold front. Strong cold
advection and strong pressure rises between the exiting frontal
trough and high pressure building into the central plains will
result in another windy day. Forecast soundings continue to show
winds at the top of the mixed layer of around 40kt and suggest
another day with the potential for wind gusts in excess of 30 mph,
but from the northwest. Meanwhile, a second and weaker shortwave is
expected to digs across the area on Saturday and may produce another
wave of scattered diurnally-driven showers as the region sits under
cyclonic flow aloft. High pressure should build over the region
Sunday through Monday, ending the pcpn chances. Another cold front
is expected to pass over the area Monday night into Tuesday, but the
latest long range guidance suggests that this will be a dry FROPA as
sfc ridging extending from the mid-atlantic region through the lower
mississippi valley should keep the local area shut off from any
significant moisture influx.

Aviation
For the 18z tafs...

dryVFR conditions expected today into tonight, while southwest
winds persist. Expect these southwest winds to steadily increase
later tonight into Friday, becoming more west southwest late in
the period.VFR ceilings return on Friday along with the potential
for scattered light rain showers. The potential for MVFR ceilings
also return late in the period, mainly Friday afternoon.

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
45174 9 mi27 min SW 9.7 G 14 53°F 57°F2 ft28°F
45186 13 mi27 min W 9.7 53°F 54°F1 ft
WHRI2 - Waukegan Harbor, IL 13 mi47 min WSW 8.9 G 17 52°F
FSTI2 17 mi87 min SSW 13 54°F
CHII2 - Chicago, IL 22 mi37 min SW 8.9 G 12 53°F 25°F
45187 22 mi27 min 53°F 53°F1 ft
CNII2 25 mi27 min S 8.9 G 13 54°F 22°F
KNSW3 - Kenosha, WI 28 mi27 min W 12 G 17 52°F 1030.8 hPa (-2.0)
JAKI2 30 mi87 min W 5.1 G 7 55°F
CMTI2 - 9087044 - Calumet, IL 34 mi39 min SSW 6 G 11 53°F 1031.6 hPa26°F

Wind History for Calumet Harbor, IL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Chicago / Wheeling, Pal-Waukee Airport, IL7 mi35 minW 7 G 1610.00 miFair55°F24°F30%1032.7 hPa
Chicago, Chicago-O'Hare International Airport, IL15 mi36 minWSW 810.00 miFair54°F26°F34%1032.2 hPa
Chicago/Waukegan Regional Airport, IL17 mi32 minSW 11 G 1610.00 miFair54°F25°F33%1031.7 hPa

Wind History from PWK (wind in knots)
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Last 24hrNW13
G19
NW11NW11NW10NW7W3W3CalmW4CalmCalmNW3CalmCalmCalmCalmCalmCalmCalmCalmSW6S8SW10W7
G16
1 day agoSW17
G26
SW15
G26
W10
G22
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W11
G18
W6SW5SW5SW6SW7--W5W5W5W7W7NW6NW7NW12NW16
G21
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2 days agoW13
G19
W9
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NW11W12
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W9W5W3SW3SW3CalmW3S4SW4CalmS6SW5SW6SW6SW8SW11
G17
SW18
G23
SW15
G26
SW16
G25
SW14
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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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

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Chicago, IL (14,3,4,5)
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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.