Thursday, July29, 2021
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Marine Weather and Tides
South 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 9:10PM Thursday July 29, 2021 10:20 PM EDT (02:20 UTC) Moonrise 11:22PMMoonset 11:29AM Illumination 68% 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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LMZ844 St Joseph To South Haven Mi- 1005 Pm Edt Thu Jul 29 2021
.small craft advisory in effect until 8 am edt Friday...
Rest of tonight..North winds 15 to 25 knots. Mostly clear. Waves 4 to 6 feet.
Friday..North winds 10 to 20 knots becoming around 15 knots late in the day. Sunny. Waves 3 to 5 feet subsiding to 2 to 3 feet late in the day.
Friday night..North winds 10 to 15 knots decreasing to around 10 knots late at night, then veering southeast toward daybreak. Partly cloudy. Waves 1 to 3 feet.
Saturday..Southwest winds 10 to 15 knots. Sunny with a slight chance of rain showers. Waves 1 to 2 feet.
Saturday night..West winds around 15 knots veering northwest toward daybreak. Partly cloudy with a chance of rain showers and a slight chance of Thunderstorms. Waves 1 to 2 feet.
Sunday..North winds 15 to 20 knots. Sunny. Waves 1 to 3 feet building to 2 to 4 feet.
Monday..North winds 10 to 20 knots. Sunny. Waves around 1 foot.
Tuesday..West winds 5 to 10 knots becoming around 10 knots. Sunny. Waves 1 foot or less.
LMZ844 Expires:202107300900;;672517 FZUS53 KGRR 300205 NSHGRR Nearshore Marine Forecast National Weather Service Grand Rapids MI 1005 PM EDT Thu Jul 29 2021 For waters within five nautical miles of shore on Lake Michigan LMZ844-300900-


7 Day Forecast for Marine Location Near South Haven city, MI
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location: 42.4, -86.27     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
SVNM4 - South Haven, MI 1 mi50 min 21 G 24 73°F
45168 3 mi40 min NW 18 G 23 73°F 74°F5 ft1014.5 hPa67°F
SJOM4 - St. Joseph, MI 24 mi80 min N 14 G 20 72°F 1015.6 hPa
HLNM4 - 9087031 - Holland, MI 26 mi50 min N 12 G 15 73°F 78°F1014.2 hPa65°F
45026 - St. Joseph, MI 34 mi40 min N 18 G 21 72°F 75°F4 ft1014.9 hPa66°F
45029 35 mi40 min NNW 18 G 21 73°F 75°F4 ft1014.5 hPa65°F
45007 - S MICHIGAN 43NM East Southeast of Milwaukee, WI 44 mi40 min N 19 G 23 71°F 72°F1015.6 hPa66°F
MKGM4 - Muskegon, MI 57 mi40 min NNE 8.9 G 9.9 70°F 1015.1 hPa63°F

Wind History for Holland, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
South Haven, South Haven Area Regional Airport, MI3 mi25 minN 710.00 miPartly Cloudy71°F68°F90%1014.9 hPa
Southwest Michigan Regional Airport, MI20 mi27 minno data10.00 miMostly Cloudy72°F67°F84%1014.5 hPa

Link to 5 minute data for KBEH

Wind History from BEH (wind in knots)
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Last 24hrSW6S3S3S4SW6SW94
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W11SW7Calm33NW5N96
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5N7N7----
1 day agoCalmCalmCalmNE4CalmE3CalmCalmCalmCalmE3W8W7W5NW7W6344NW4CalmW6SE3SW4
2 days agoCalmCalmE3CalmCalmCalmSE3CalmCalmCalmCalmCalmN3S3SW8W10SW7W9
G15
NW9NW5W4W3CalmCalm

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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