Friday, July28, 2017 L-36.com


Marine Weather and Tides
Woodstock, 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 5:42AMSunset 8:18PM Friday July 28, 2017 11:58 AM CDT (16:58 UTC) Moonrise 11:30AMMoonset 11:31PM Illumination 26% Phase: Waxing Crescent; Moon at 5 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
    EDIT      (on/off)   Help
LMZ740 Winthrop Harbor To Wilmette Harbor- Wilmette Harbor To Northerly Island- Northerly Island To Calumet Harbor- 913 Am Cdt Fri Jul 28 2017
.small craft advisory in effect through Saturday morning...
Rest of today..Northeast winds 15 to 25 kt. Mostly Sunny. Waves 4 to 7 ft occasionally to 9 ft.
Tonight..Northeast winds 15 to 25 kt becoming east after midnight. Clear. Waves 4 to 7 ft occasionally to 9 ft.
Saturday..Northeast winds 15 to 20 kt. Sunny. Waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to 5 ft.
Saturday night..Northeast winds 10 to 20 kt. Clear. Waves 3 to 5 ft subsiding to 2 to 4 ft after midnight.
LMZ740 Expires:201707282200;;961405 FZUS53 KLOT 281413 NSHLOT NEARSHORE MARINE FORECAST National Weather Service Chicago/Romeoville IL 913 AM CDT Fri Jul 28 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>742-282200-

7 Day Forecast for Marine Location Near Woodstock, IL
   Hourly   EDIT   Help
location: 42.32, -88.45     debug


Area Discussion for - Chicago, IL
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus63 klot 281512
afdlot
area forecast discussion
national weather service chicago romeoville, il
1012 am cdt Fri jul 28 2017

Update
1009 am cdt
stratus continues to advect inland off the lake under northeast
winds. The trajectory continues to suggest some erosion closer to
the lake in cook county and in lake county indiana, with the main
focus from lake county illinois to ord to the far western suburbs.

Rap analysis does depict this axis to continue for a few more
hours with a general scattering this afternoon.

Kmd

Short term
216 am cdt
through tonight...

weak secondary cold front will continue to move slowly south
across the area this morning, with some models hinting at some
isolated showers or sprinkles south of the kankakee river this
morning. Prospects for any precip falling, let alone measurable,
are meager at best and kept forecast dry with just 10-15% of any
given area picking up any measurable precip. Otherwise, modestly
brisk northerly winds are expected today with dewpoints a good
10f+ lower than yesterday with temps in the same ballpark or a
bit cooler. Anticipate enough of a gradient tonight to keep any
fog confined to the typical wind sheltered, low lying areas and
not anticipating fog to get out of hand.

- izzi

Long term
216 am cdt
Saturday through Thursday...

after a very active wx pattern in july, it looks like august will
come in more like a lamb with a far more tranquil weather pattern
expected. Generally expect fairly seasonable temps through the
period with the only real threat of precipitation coming with a
progressive trough and associated cold front moving across the
region in the late Wednesday early Thursday time frame.

- izzi

Aviation
For the 12z tafs...

high pressure will continue across the western great lakes over
the next 24-30 hours resulting in fairly steady state conditions
across northern illinois and northwest indiana. Expect a modest
diurnal uptick in wind speeds with some gusts into the mid to high
teens late this morning through the afternoon for the chicago
area terminals. Few to scattered afternoon cumulus is also
expected.VFR conditions will prevail throughout the taf
period.

Bmd

Marine
245 am cdt
broad area of high pressure is centered just north of lake
superior early this morning resulting in a moderate north to
northeast gradient across lake michigan. Northeast winds of 20 to
25 kt will back to north to 30 kt this afternoon. A small craft
advisory will remain in effect for the indiana and illinois
nearshore zones through Saturday morning. High pressure will
settle over lake michigan this weekend allowing winds and waves
to diminish over the north end of the lake Saturday then over the
south end Sunday. Low pressure moving across canada early through
the middle of next week will drive a cold front south across the
great lakes around midweek.

Bmd

Lot watches warnings advisories
Il... Beach hazards statement... Ilz006-ilz014 until 7 pm Saturday.

In... Beach hazards statement... Inz001-inz002 until 7 pm Saturday.

Lm... Small craft advisory... Nearshore waters
until 10 am Saturday.

Visit us at http: weather.Gov chicago (all lowercase)
follow us on facebook... Twitter... And youtube at:


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WHRI2 - Waukegan Harbor, IL 34 mi78 min NNE 13 G 17 69°F
KNSW3 - Kenosha, WI 39 mi58 min NNE 16 G 18 68°F 1016.6 hPa (+0.7)
45174 44 mi28 min NNE 12 G 16 70°F 71°F4 ft65°F
FSTI2 49 mi118 min ENE 8 71°F
CHII2 - Chicago, IL 54 mi38 min NNE 13 G 15 71°F 63°F

Wind History for Calumet Harbor, IL
(wind in knots)    EDIT      (on/off)   Help
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
Last
24hr
N14
G18
N13
G17
N15
G19
NW13
G18
NW11
G20
NW13
G18
N11
G15
N14
G20
N12
G17
NW9
G14
N10
G13
N8
G12
NW7
G10
N7
G10
N6
G11
N8
G12
N9
G12
N8
G13
N8
G12
N10
N10
G15
N9
G14
N10
G15
N11
G14
1 day
ago
S6
G10
SW5
G11
S6
G11
SW6
G10
SW5
G10
SW6
G9
S7
G10
SE6
SE5
SE6
SE7
SE4
S3
SE7
G11
S3
SW5
SW2
W1
NW6
NW4
G7
NW5
G8
NW8
G11
NW9
G12
N9
G14
2 days
ago
S5
G11
E7
E9
G13
NE10
NE8
G11
NE10
SE5
G10
SE8
G12
SE7
G10
SE4
G8
SE3
SE6
G9
SE6
G9
SE6
G9
S5
G9
S6
S5
S6
S6
S6
S7
S8
G11
S6
G11
S6

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Burlington Municipal Airport, WI27 mi63 minNE 910.00 miMostly Cloudy73°F64°F75%1017.3 hPa

Wind History from BUU (wind in knots)
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
Last 24hrN13
G16
N10
G16
NE8
G17
NE9
G20
NE11
G17
NE10
G19
NE5NE6NE7NE6N3N3N4CalmN4N3N5N4N6N8NE6N5NE10NE9
1 day agoSW6W6SW6S4CalmCalmCalmCalmNE4CalmCalmCalmCalmCalmCalmN4CalmN4CalmCalmNE5NE9NE11
G15
NE13
G16
2 days agoS7CalmSW6S4S5SE6S8SE6SE6CalmCalmS3CalmCalmCalmS4CalmS3SW4SW3S6S7SW6SW8

Tide / Current Tables for
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help
Tide / Current Tables for
   EDIT      (on/off)   Help
Weather Map and Satellite Images
       (on/off)   Help
Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Midwest    EDIT
Geos

Wind Forecast for Chicago, IL (12,3,4,5)
      (on/off)   Help

Ground Weather Radar Station Milwaukee, WI
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

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.