Monday, August3, 2020
Privacy Policy
L-36.com


Marine Weather and Tides
Hammond, IN

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
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.

Sunrise 5:45AMSunset 8:06PM Monday August 3, 2020 12:05 PM CDT (17:05 UTC) Moonrise 8:34PMMoonset 5:27AM Illumination 100% Phase: Full Moon; Moon at 14 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
LMZ743 Calumet Harbor To Gary-gary To Burns Harbor- Burns Harbor To Michigan City- 928 Am Cdt Mon Aug 3 2020
.small craft advisory in effect through late Tuesday night...
Rest of today..North winds 15 to 25 kt. Chance of showers and Thunderstorms. Chance of waterspouts late this morning. Waves 5 to 8 ft occasionally to 10 ft.
Tonight..Northeast winds to 30 kt diminishing to 20 to 25 kt after midnight. Chance of showers. Waves 7 to 10 ft occasionally to 13 ft subsiding to 5 to 8 ft occasionally to 10 ft after midnight.
Tuesday..North winds 15 to 25 kt. Slight chance of showers in the morning. Waves 5 to 8 ft occasionally to 10 ft.
Tuesday night..North winds 10 to 20 kt becoming northwest 5 to 10 kt after midnight. Mostly clear. Waves 4 to 7 ft occasionally to 9 ft subsiding to 4 to 6 ft occasionally to 8 ft after midnight.
LMZ743 Expires:202008032000;;870198 FZUS53 KLOT 031428 NSHLOT NEARSHORE MARINE FORECAST National Weather Service Chicago/Romeoville IL 928 AM CDT Mon Aug 3 2020 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>745-032000-


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


Area Discussion for - Chicago, IL
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS63 KLOT 031119 AFDLOT

Area Forecast Discussion National Weather Service Chicago/Romeoville, IL 619 AM CDT Mon Aug 3 2020

SHORT TERM. 300 AM CDT

Through Tuesday .

The main weather focus today remains on building wave heights across the lake behind a fast-approaching cold front, and the potential for waterspouts mainly this morning and perhaps lingering into the early afternoon hours across the far southern tip of the lake.

Our latest much-advertised cold front is tough to discern in the surface fields early this morning, with a gradual theta-e gradient noted into portions of north-central and northwest Illinois. Eventually, this boundary will move through our entire region (by later this afternoon), injecting a much drier and cooler airmass across the CWA. Until then, near-surface moisture remains a bit elevated, especially across the southeastern half of the forecast area where dewpoint depressions have fallen to about a degree or less in spots. Clearing skies in the wake of yesterday afternoon's convection and also immediately ahead of the encroaching low- stratus deck north of I-80 should allow pockets of fog to develop through sunrise this morning. Have added some patchy fog wording to the gridded forecast roughly south of I-88 as a result with some locally dense pockets possible. This set up doesn't look like a Dense Fog Advisory situation, but we'll continue to keep an eye on trends this morning.

Watching our initial wind surge dropping down the lake, with buoy observations upstream indicating gusts increasing to 20 to 25 kts. Observations indicate what appears to be a mesovortex-like feature at the southwestern bowl of the lake--and this signal has been in hi-res guidance for the past few nights. Enhanced convergence associated with this feature, combined with an upstream approaching shortwave should continue to force convection near the land-lake interface the rest of this morning. While the coldest 850 mb temperatures are still north of our region, somewhat steep mid-level lapse rates combined with lake surface temperatures in the lower 70s are currently supporting lake- induced CAPE values approaching 1500 J/kg with equilibrium levels to almost 35,000 feet. In addition, area VWPs indicate about 30 kts of effective deep layer shear in place over the lake, which seems to be supporting transient supercellular structures with two recent impressive-looking cores tracking southeast across the lake (on the right-moving supercell vector). Conditions will remain favorable for the development of some stronger cells as well as an attendant waterspout threat this morning, especially for any showers/storms that are able to develop near the convergent axis associated with the aforementioned front-mesovortex intersection. Have greatly pared back PoPs inland today with crashing inversion heights and incoming subsidence likely to limit precipitation potential. In addition, have tried to limit the thunder wording to the immediate lake and lakeside locales today with instability really lacking elsewhere--save perhaps for our far southeast later this afternoon ahead of the cold front.

Hazardous swimming conditions and a threat for lakeshore flooding remain, and expected to ramp up today and late this afternoon and evening as the strongest winds surge down the lake. See the MARINE section below for further information.

Precipitation chances drop off tonight but low chances linger downwind of the lake into northwest Indiana. Lake parameters start to get a little less supportive by daybreak Tuesday, with things probably trending more towards just a broken-overcast lake-effect cloud deck during the day.

Carlaw

LONG TERM. 210 AM CDT

Tuesday night through Sunday .

With the upper-level jet stream well to our north and the trough responsible for our recent stretch of fall-like weather pivoting eastward by mid-week, the end of the workweek looks quiet and dry. Daily highs and lows will increase by a few degrees each day with ample sunshine and daily lake breezes. Longer-range forecasts call for a return to a more summer-like thunderstorm pattern from the weekend onward, with ensemble model guidance perhaps highlighting the Sunday through Tuesday timeframe for episodes of thunderstorms.

Borchardt

AVIATION. For the 12Z TAFs .

A stratus deck rooted between 800 and 1200 feet remains locked in place at all terminals with (lo and behold) prevailing IFR at DPA/MDW/ORD. As the daylight hours progress, would think cloud bases should respond to even modest low-level heating (via solar irradiance) and accordingly have offered a return to MVFR everywhere by 15Z. Should the IFR overstay its welcome, a secondary cold front this afternoon will afford a stronger push of wind that will mix cloud bases upward. Winds should also adopt a subtle easterly component behind the secondary front, as well.

A convergent band of showers over Lake Michigan may meander west and east at times this morning leading to showers impinging on the 10 mile vicinity radius at ORD/MDW/GYY. Otherwise, current thinking is most if not all hours will be dry at the terminals.

After sunset, sufficient lake instability and low-level northeasterly flow will enable lake effect stratus to stream over all but RFD.

Borchardt

LOT WATCHES/WARNINGS/ADVISORIES. IL . Beach Hazards Statement . ILZ006-ILZ103-ILZ104 until 7 AM Wednesday.

Lakeshore Flood Advisory . ILZ006-ILZ103-ILZ104 until 4 PM Tuesday.

IN . Beach Hazards Statement . INZ001-INZ002 until 7 AM Wednesday.

Lakeshore Flood Advisory . INZ001-INZ002 . 1 PM Monday to 10 PM Tuesday.

LM . Small Craft Advisory . IL nearshore waters until 4 AM Wednesday.

Small Craft Advisory . IN nearshore waters until 4 AM Wednesday.



Visit us at weather.gov/chicago

Follow us on Facebook, Twitter, and YouTube at: www.facebook.com/NWSChicago www.twitter.com/NWSChicago www.youtube.com/NWSChicago


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
CMTI2 - 9087044 - Calumet, IL 8 mi47 min NNW 11 G 17 69°F 1016.3 hPa65°F
JAKI2 12 mi125 min N 8.9 G 18 69°F
CNII2 17 mi35 min NNW 12 G 14 70°F 62°F
CHII2 - Chicago, IL 21 mi35 min NNW 18 G 20 67°F 65°F
OKSI2 21 mi125 min N 6 G 8 67°F
45170 29 mi25 min 9.7 G 14 70°F 72°F5 ft64°F
MCYI3 - Michigan City, IN 32 mi35 min N 14 G 15 70°F 63°F
45174 37 mi55 min NNW 14 G 19 66°F 73°F6 ft1017.2 hPa63°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
SW4
G9
S9
N4
SE4
G7
SE4
G9
W7
G18
NE7
G11
NW5
G11
E8
G12
SE6
G10
S2
S3
W3
SW2
W2
W3
G6
W2
NW6
G11
W3
G8
NW5
W5
G9
NW8
G15
NW8
G12
NW10
G15
1 day
ago
NE4
G7
N3
G7
N5
G8
N6
G9
N5
G9
N7
G11
N6
N7
G11
N7
G12
NE8
G11
SE3
SW2
G5
SW3
W1
W1
SW3
SW5
SW4
SW7
G10
SW4
G8
SW4
G8
SW4
SW6
SW4
G7
2 days
ago
N8
G11
NE10
NE10
G13
N9
G14
N9
G14
N9
G17
N10
G13
N9
G14
N8
G11
N7
G10
N8
G11
N5
G9
N8
G11
N6
G10
N7
N8
G11
NE6
G9
NE6
NE4
G7
NE5
E5
SE4
G7
SE4
NE4

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Gary Regional Airport, IN4 mi80 minNNW 14 G 1810.00 miMostly Cloudy72°F0°F%1016.9 hPa
Lansing Municipal Airport, IL7 mi70 minNNW 810.00 miOvercast70°F63°F82%1016.9 hPa
Chicago, Chicago Midway Airport, IL18 mi72 minN 810.00 miOvercast69°F60°F73%1016.3 hPa

Link to 5 minute data for KGYY

Wind History from GYY (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 24hrS4SW4W12
G19
CalmCalmN7N7N4E6W5SW4S3NW4W3W3W3W4NW10NW10NW8NW10NW10NW14
G18
NW15
G18
1 day agoN5N6N7N6N7N6N6N64CalmW4W3W4W3CalmW3W7SW5SW4W5SW4SW4W4S4
2 days agoN8N10N10N10N10N10N8N7N7N8NE9N7N8N6NE7NE5NE4NE3CalmE3CalmCalmCalmN6

Tide / Current Tables for
   EDIT   Weekend mode (on/off)   (on/off)   Help
Tide / Current Tables for
   EDIT      (on/off)   Help
Weather Map
       (on/off)   Help Weather Map
wmap_A
GEOS 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 (13,3,4,5)
      (on/off)   Help

Ground Weather Radar Station Chicago, IL
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

Cookie Policy:
This website uses cookies to save your settings. No personal information is saved. I do not collect statistics on your visit. You can disable cookies in your browser if you like but it is not recommended for this site. I do not sell cookies. Go to a bakery for that. In fact I do not sell anything. To disable cookies from L-36.com, please refer to the Help button in your browser.
Privacy Policy:
I do not sell or share any user data or anything else for that matter. The only personal information I save is in the site log which has a line for each page view which includes the IP address your browser sends in the header as well as which page you requested. I use this to block hackers and other bad actors. I do not use this raw data to create profiles on users. I periodically delete the log files. If you are subject to CCPA, Google ads on this site will not be based on your past behavior so you will likely not see an ad for a lawn mower just because you looked for one at a big box website. I do not believe this site is subject to CCPA but I am doing what I can to follow the guidelines anyway.
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 numerous 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.