Thursday, July29, 2021
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Marine Weather and Tides
Grand Haven, 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 6:31AMSunset 9:11PM Thursday July 29, 2021 7:58 PM EDT (23:58 UTC) Moonrise 11:22PMMoonset 11:29AM Illumination 69% Phase: Waning Gibbous; Moon at 20 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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LMZ846 Holland To Grand Haven Mi- 405 Pm Edt Thu Jul 29 2021
.small craft advisory in effect through Friday morning...
Through early evening..North winds 15 to 25 knots. Sunny. Waves 3 to 5 feet.
Tonight..North winds 15 to 25 knots. Mostly clear. Waves 3 to 5 feet subsiding to 2 to 3 feet after midnight.
Friday..Northeast winds 10 to 20 knots. Mostly Sunny. Waves 1 to 3 feet.
Friday night..North winds 10 to 15 knots decreasing to around 10 knots late at night, then backing south toward daybreak. Partly cloudy. Waves 1 to 3 feet.
Saturday..Southwest winds 5 to 15 knots. Mostly Sunny with a chance of rain showers and a slight chance of Thunderstorms. Waves 1 to 3 feet.
Saturday night..West winds around 15 knots veering north toward daybreak. Partly cloudy with a chance of showers and Thunderstorms. Waves 1 to 3 feet.
Sunday..North winds 15 to 20 knots. Sunny. Waves 2 to 3 feet.
Monday..North winds 10 to 20 knots backing northwest late in the day. Sunny. Waves around 1 foot.
Tuesday..West winds 10 to 15 knots. Sunny. Waves 1 foot or less.
LMZ846 Expires:202107300800;;658304 FZUS53 KGRR 292006 NSHGRR Nearshore Marine Forecast National Weather Service Grand Rapids MI 405 PM EDT Thu Jul 29 2021 For waters within five nautical miles of shore on Lake Michigan LMZ846-300800-


7 Day Forecast for Marine Location Near Grand Haven, MI
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location: 43.05, -86.36     debug


Area Discussion for - Grand Rapids, MI
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FXUS63 KGRR 292311 AFDGRR

Area Forecast Discussion National Weather Service Grand Rapids MI 711 PM EDT Thu Jul 29 2021

LATEST UPDATE . Aviation

SYNOPSIS. Issued at 135 PM EDT Thu Jul 29 2021

- Chance of strong to severe storms Saturday along cold front

- Upper Troughing brings cool weather with occasional showers

DISCUSSION. (This evening through next Thursday) Issued at 128 PM EDT Thu Jul 29 2021

- Chance of strong to severe storms Saturday along cold front

Northerly flow will bring cooler and less humid air into Friday afternoon, then southwest winds will advect in some moisture ahead of a cold front moving in from the north as a shortwave trough reinforces upper troughing across the eastern U.S.

Forecast soundings show 25 to 30 knots of deep layer shear along with marginal instability and downdraft potential. Isolated downbursts and hail appear to be the main threats with multicell cluster storm mode from Saturday afternoon into the evening.

- Upper Troughing brings cool weather with occasional showers

Surface cold front clears Lower Michigan early Sunday with the persistent western ridge/NE trough pattern seeing an expansion of the trough across the eastern U.S. including the Great Lakes. This will mean cooler than normal temperatures with occasional chances for showers as smaller scale features move through the upper troughing.

AVIATION. (For the 00Z TAFS through 00Z Friday evening) Issued at 705 PM EDT Thu Jul 29 2021

Added VCSH mention to JXN until 0100z as a few showers have developed near LAN along a cold front that is moving southward. Lightning is a low possibility at JXN but left it out given we are running out of diurnal instability across southern Lower MI. VFR will dominate this TAF period for all sites.

MARINE. Issued at 135 PM EDT Thu Jul 29 2021

No changes planned to the marine hazards with winds and waves expected to diminish overnight. There could be some higher waves on Saturday with southwest winds ahead of the cold front and again Sunday behind the cold front. Thunderstorms along the cold front could bring strong, gusty winds Saturday afternoon or evening.

GRR WATCHES/WARNINGS/ADVISORIES. MI . Beach Hazards Statement through Friday morning for MIZ037-043- 050-056-064-071.

LM . Small Craft Advisory until 8 AM EDT Friday for LMZ844>849.



SYNOPSIS . Ostuno DISCUSSION . Ostuno AVIATION . Hoving MARINE . Ostuno


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
45161 9 mi78 min NNW 16 G 19 73°F 74°F3 ft1013.9 hPa
45029 11 mi48 min NW 19 G 25 73°F 76°F4 ft1013.1 hPa67°F
MKGM4 - Muskegon, MI 12 mi48 min NNE 12 G 15 76°F 1013.6 hPa65°F
HLNM4 - 9087031 - Holland, MI 21 mi64 min NW 21 G 24 73°F 78°F1013 hPa69°F
45007 - S MICHIGAN 43NM East Southeast of Milwaukee, WI 44 mi48 min N 19 G 25 71°F 72°F1014.4 hPa67°F
45168 45 mi48 min WNW 16 G 21 73°F 75°F3 ft1013.9 hPa66°F
SVNM4 - South Haven, MI 45 mi58 min 21 G 23 74°F
LDTM4 - 9087023 - Ludington, MI 62 mi64 min N 5.1 G 13 72°F 62°F

Wind History for Holland, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Muskegon, Muskegon County Airport, MI10 mi63 minN 13 G 2010.00 miMostly Cloudy77°F65°F66%1013.7 hPa

Link to 5 minute data for KMKG

Wind History from MKG (wind in knots)
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Last 24hrS5SW6CalmS3NE4S6SW9SW13
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W8NW9NW9NW13
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NW10NW6NW6NW7W10NW10NW15
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1 day agoCalmSW3SW3CalmCalmCalmCalmNE5NE6CalmSW3CalmE3E6E5E4333CalmSW7SW73S7
2 days agoS4S5SW4S6SW8SW12SW11SW12W9
G16
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N4SW3W9
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NW5W7SW6SW6SW7SW6W7SW6SW5SW5Calm

Tide / Current Tables for
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GEOS Local Image of GreatLakes    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.
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