Monday, June21, 2021
Privacy Policy
L-36.com

Marine Weather and Tides
Grand Beach, MI

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 5:11AMSunset 8:27PM Monday June 21, 2021 1:21 AM CDT (06:21 UTC) Moonrise 5:04PMMoonset 2:41AM Illumination 86% Phase: Waxing Gibbous; Moon at 11 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
LMZ080 Lake Michigan From Michigan City In To St. Joseph Mi 5 Nm Offshore To Mid Lake- Lake Michigan From Sheboygan To Port Washington Wi 5 Nm Offshore To Mid Lake- Lake Michigan From Port Washington To North Point Light Wi 5 Nm Offshore To Mid Lake- Lake Michigan From North Point Light To Wind Point Wi 5 Nm Offshore To Mid Lake- Lake Michigan From Wind Point Wi To Winthrop Harbor Il 5 Nm Offshore To Mid Lake- Lake Michigan From Winthrop Harbor To Wilmette Harbor Il 5 Nm Offshore To Mid Lake- Lake Michigan From Wilmette Harbor Il To Michigan City In 5 Nm Offshore To Mid Lake- Lake Michigan From Whitehall To Pentwater Mi 5 Nm Offshore To Mid Lake- Lake Michigan From Grand Haven To Whitehall Mi 5 Nm Offshore To Mid Lake- Lake Michigan From Holland To Grand Haven Mi 5 Nm Offshore To Mid Lake- Lake Michigan From South Haven To Holland Mi 5 Nm Offshore To Mid Lake- Lake Michigan From St. Joseph To South Haven Mi 5 Nm Offshore To Mid Lake- 831 Pm Cdt Sun Jun 20 2021 Sheboygan Wi To Pentwater Mi South...
Rest of tonight..Southeast winds 10 to 15 kt becoming south 10 to 20 kt late this evening, then becoming southwest 15 to 25 kt after midnight becoming west to 30 kt late. Showers and Thunderstorms. Waves 1 to 2 ft building to 3 to 5 ft.
Monday..Northwest winds to 30 kt becoming north 15 to 25 kt. Waves 4 to 7 ft occasionally to 9 ft building to 5 to 8 ft occasionally to 10 ft.
Monday night..North winds 10 to 20 kt diminishing to 10 to 15 kt after midnight, then backing to southwest 5 to 10 kt late. Waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to 5 ft.
Tuesday..Southwest winds 10 to 15 kt. Waves 1 to 3 ft.
Tuesday night..South winds 10 to 20 kt. Waves 2 to 4 ft.
Wednesday..South winds 10 to 20 kt increasing to 15 to 25 kt. Waves 3 to 5 ft.
Wednesday night..South winds 15 to 25 kt. Waves 4 to 6 ft occasionally to 8 ft.
Thursday..South winds 15 to 25 kt. Chance of showers and Thunderstorms. Waves 4 to 6 ft occasionally to 8 ft.
Friday..South winds 10 to 20 kt becoming southwest. Showers and Thunderstorms likely. Waves 2 to 4 ft.
LMZ080 Expires:202106210930;;595385 FZUS63 KMKX 210131 GLFLM OPEN LAKE FORECAST for Lake Michigan National Weather Service Milwaukee/Sullivan WI 831 PM CDT Sun Jun 20 2021 FOR WATERS BEYOND 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 wave, along with the average height of the highest 10% of the waves which will occasionally be encountered. .SYNOPSIS... Low pressure of 29.2 inches over central Wisconsin will continue to move northeast tonight, moving across northern Lake Michigan. Northwest winds will pickup behind the low and associated cold front tonight into Monday, with gale force winds likely across the northern third of the lake. Winds may approach gale force at times farther south. Lighter winds are then expected Monday night into Tuesday as high pressure of 30.0 inches moves through the region. && LMZ080-669-671-673-675-777-779-870-872-874-876-878-210930-


7 Day Forecast for Marine Location Near Grand Beach, MI
   Hourly   EDIT   Help
location: 42.03, -87     debug


Area Discussion for - Northern Indiana, IN
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS63 KIWX 210545 AFDIWX

Area Forecast Discussion National Weather Service Northern Indiana 145 AM EDT Mon Jun 21 2021

SYNOPSIS. Issued at 138 AM EDT Mon Jun 21 2021

Showers and thunderstorms are expected tonight. Strong to severe storms are possible through early Monday morning, with a line of storms moving from west to east through the area overnight. Damaging winds, large hail, and heavy rain are the main threats. Isolated tornadoes are possible. Otherwise, dangerous swimming conditions are expected on Lake Michigan through Tuesday morning. Cooler and drier air will settle in from Monday into the middle of the week.

UPDATE. Issued at 905 PM EDT Sun Jun 20 2021

MCV responsible for numerous severe reports will continue to depart to the east over next few hours. Greatest severe threat across far northeast locations is shifting off the east, but isolated strong/severe storm has developed just east of Marion, IN over past hour with still some MLCAPE on the order of 3000 J/kg feeding in from central Indiana. Severe threat still in place with any isolated/scattered storms along and east of the I-69 corridor over next few hours. Primary threats still appear to be large hail and isolated damaging winds but cannot completely discount isolated tornado threat given combination of aforementioned instability and effective bulk shear on Attention will then turn back across northern Illinois as cold frontal forcing increases from the northwest. Best upper support shifts across the western Great Lakes, and feel that greatest additional wind threat during the overnight hours will be across northern half of the area. Hodographs derived from regional VWPs have enlarged this evening, but shear profile should become slightly more unidirectional in nature overnight as low level flow veers slightly in advance of the cold front. Isolated/scattered damaging wind gusts and localized heavier downpours still appear to be primary threats during the overnight hours with the cold frontal forcing. With good combination of shear/instability in place across the area, will maintain severe thunderstorm watch at this time despite lull in many locations immediate behind the MCV.

SHORT TERM. (This Afternoon through Monday) Issued at 240 PM EDT Sun Jun 20 2021

The main focus remains on the severe weather threat late this afternoon into this evening. A MCV and associated cluster of convection, located across ne MO, will be the main feature of interest as it tracks into the local area by this time, with convection growing upscale in the vicinity of a lingering sfc boundary oriented w-e just north of US 30. An increasingly moist/unstable boundary layer under strengthening southwest flow/shear support SPC's higher probs for severe storms. Initial storm evolution by 21-23z may favor discrete storms (with HP supercell structures), likely transitioning to broken line segments or an organized bowing segment. All hazards (hail/wind/tornado) remain on the table as hodographs enlarge and wind fields strengthen. Large hail and isolated tornadoes will likely be the primary threats to start, then trending toward damaging winds with any linear segments. Overall confidence in this severe storm threat has increased, especially along/north of US 24 . so be weather alert and stay tuned for updates.

A second line of convection is still expected to develop along a cold front in eastern IA/WI this evening, with the bulk of CAMs bringing this east in the 5-9z Monday AM time window. Wind appears the be the primary threat by this time, conditional on how convection evolves late this afternoon and evening. Expectations at this time are for this higher end gusts within the weakening MCS/QLCS to be more isolated and confined to areas mainly west of Interstate 69.

A few showers may linger into Monday morning before the cold front exits to the east, especially along/east of I-69. Gusty northwest winds and cooler otherwise into the afternoon.

LONG TERM. (Monday Night through Sunday) Issued at 240 PM EDT Sun Jun 20 2021

A quick shot of cool air will be the wx story post-frontal Monday night through Tuesday night with lows mid 40s to low 50s. Skies will trend mainly clear otherwise as low level ridging translates through on the backside of an exiting upper trough.

Wednesday into Thursday will feature a warming trend on the backside of high pressure with any convection to focus off to the northwest on the nose of a LLJ. Fold over of this moisture channel and front will then bring the next decent chance for showers and storms into Thursday night and Friday. Troughing then lingers over the region into next weekend with additional rain chances and cooler temps.

AVIATION. (For the 06Z TAFS through 06Z Monday Night) Issued at 138 AM EDT Mon Jun 21 2021

A line of strong to severe storms ahead of a cold front, just west of the KSBN terminal as of 540Z, will progress eastward to KFWA over the next few hours. So far, wind gusts to 30 to 50 mph have been reported with this line, in addition to low end MVFR ceilings and IFR visibilities, so have a tempo group at KSBN/KFWA to account for the line passage. Behind the cold front, winds shift to the northwest at 15 to 25 knots or so and ceiling heights linger around MVFR. Some of the guidance suggests that we could even see a period of IFR ceiling heights (both sites), but confidence wasn't high enough to include in the TAF at this time. Conditions improve to VFR by Monday afternoon.

IWX WATCHES/WARNINGS/ADVISORIES. IN . Beach Hazards Statement through late tonight for INZ003.

MI . Beach Hazards Statement through late tonight for MIZ077.

OH . NONE. LM . Small Craft Advisory until 11 PM EDT this evening for LMZ043-046.



UPDATE . Marsili SYNOPSIS . MCD SHORT TERM . Steinwedel LONG TERM . Steinwedel AVIATION . MCD

Visit us at www.weather.gov/iwx

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


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
45026 - St. Joseph, MI 20 mi31 min W 12 G 19 65°F 69°F2 ft1001.6 hPa62°F
MCYI3 - Michigan City, IN 21 mi31 min 66°F 1000.4 hPa65°F
SJOM4 - St. Joseph, MI 27 mi81 min WSW 7 G 14 71°F 1001.4 hPa
BHRI3 - Burns Harbor, IN 28 mi41 min N 38 G 56 66°F 1001 hPa
CHII2 - Chicago, IL 31 mi31 min S 21 G 23 67°F 67°F
CNII2 34 mi21 min S 8 G 25 67°F 65°F
OKSI2 34 mi141 min Calm G 1.9 67°F
45174 35 mi21 min S 9.7 G 16 68°F1 ft997.7 hPa (-1.5)
CMTI2 - 9087044 - Calumet, IL 35 mi51 min SE 8.9 G 9.9 999 hPa
JAKI2 35 mi141 min N 5.1 G 11 67°F
45168 44 mi21 min S 9.7 G 14 67°F 66°F999.6 hPa62°F
SVNM4 - South Haven, MI 46 mi41 min 8.9 G 9.9 67°F
45186 48 mi31 min 68°F 66°F1 ft
WHRI2 - Waukegan Harbor, IL 49 mi81 min S 18 G 23 67°F

Wind History for Calumet Harbor, IL
(wind in knots)    EDIT      (on/off)   Help
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
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
Last
24hr
NW4
N7
N2
N2
NE3
N3
E2
N2
N3
NE3
NE6
NE7
NE2
E5
NE5
NE4
E2
SW8
G12
SW8
G13
SW6
G15
NE7
G10
E8
G11
E5
NW8
G22
1 day
ago
S2
S1
S4
SW5
G8
SW6
G10
SW10
G15
S7
G11
SW8
G13
SW13
G18
SW13
G19
S13
G20
SW12
G19
SW8
G14
SW6
G16
SW10
G16
SW9
G17
SW10
G17
NW8
G14
NW7
G11
NW6
G10
N8
G11
N5
G9
N3
G6
NW2
2 days
ago
SW6
G10
NE11
G17
SE9
G19
SE10
G19
S9
G12
SW7
G13
SW7
G12
W5
G12
N7
G10
NE6
NE5
NE3
E4
SE3
SE4
E3
SW1
S2
SW4
SW1

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Michigan City Municipal Airport, IN25 mi26 minNE 610.00 miHeavy Rain64°F63°F94%1001.4 hPa

Link to 5 minute data for KMGC

Wind History from MGC (wind in knots)
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
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
Last 24hrCalmCalmCalmCalmCalmCalmCalmCalmCalmS4SW4CalmCalmS4S4CalmCalmW4
G21
CalmCalmCalmSE4CalmSW4
1 day agoCalmCalmCalmSW7S10
G16
SW9
G15
SW9SW8SW4S10S12
G15
SW14
G19
SW12
G20
SW9
G16
SW12
G17
SW8SW6
G16
SW13W3N3CalmS3CalmCalm
2 days agoS11
G19
S8SE4S4CalmE5SE4S3S8
G14
S8SW8SW9N9NE3N6N6N5CalmCalmCalmCalmCalmCalmCalm

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: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
Link to Loop

Other links: GEOS-West     Contential US     Full GOES-East
Ground Weather Radar Station




Please read website Cookie, Privacy, and Disclamers by clicking HERE.