Thursday, July29, 2021
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Marine Weather and Tides
Delton, 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 9:06PM Thursday July 29, 2021 5:57 PM EDT (21:57 UTC) Moonrise 11:19PMMoonset 11:25AM Illumination 70% 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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LMZ845 South Haven To Holland Mi- 405 Pm Edt Thu Jul 29 2021
.small craft advisory in effect through Friday morning...
Through early evening..North winds 10 to 20 knots. Sunny. Waves 4 to 6 feet.
Tonight..North winds 15 to 25 knots. Mostly clear. Waves 4 to 6 feet.
Friday..Northeast winds 10 to 20 knots backing north. Sunny. Waves 2 to 4 feet subsiding to 1 to 3 feet.
Friday night..North winds 5 to 15 knots veering southeast toward daybreak. Partly cloudy. Waves 1 to 3 feet.
Saturday..Southwest winds 5 to 15 knots. Sunny with a slight chance of rain showers. Waves 1 to 3 feet.
Saturday night..West winds 10 to 15 knots veering northwest 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 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.
LMZ845 Expires:202107300800;;658305 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 LMZ845-300800-


7 Day Forecast for Marine Location Near Delton, MI
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location: 42.49, -85.43     debug


Area Discussion for - Grand Rapids, MI
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FXUS63 KGRR 291741 AFDGRR

Area Forecast Discussion National Weather Service Grand Rapids MI 141 PM EDT Thu Jul 29 2021

LATEST UPDATE .

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 18Z TAFS through 18Z Friday afternoon) Issued at 105 PM EDT Thu Jul 29 2021

Expect primarily VFR through entire period, but have included TEMPO groups for MVFR ceilings at AZO, BTL, GRR, and JXN, where visible satellite imagery suggests stratcocumulus is a bit slower to mix out. Low-end gusts will subside this evening as boundary layer decouples, but surface winds will be sustained overnight by persistent pressure gradient as surface anticyclone builds into Great Lakes. No additional avaiation impacts anticipated through period.

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 . Kenyon MARINE . Ostuno


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
HLNM4 - 9087031 - Holland, MI 46 mi64 min NW 19 G 22 74°F 78°F1012.4 hPa70°F
SVNM4 - South Haven, MI 46 mi58 min 19 G 21 73°F
45168 48 mi48 min NW 16 G 19 73°F 75°F3 ft1013.3 hPa68°F
SJOM4 - St. Joseph, MI 63 mi58 min N 8.9 G 11 76°F 1014.6 hPa
MKGM4 - Muskegon, MI 70 mi48 min N 16 G 21 78°F 1012.5 hPa68°F

Wind History for Holland, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Battle Creek Executive Airport, MI16 mi65 minNNW 810.00 miMostly Cloudy81°F69°F67%1011.5 hPa
Kalamazoo/Battle Creek International Airport, MI18 mi65 minWNW 1010.00 miMostly Cloudy82°F69°F65%1011.6 hPa

Link to 5 minute data for KBTL

Wind History from BTL (wind in knots)
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Last 24hrW4E4E6S4CalmCalmSW5S7SW9SW9SW10SW11NW10
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1 day agoNW7W7W6W4W3CalmCalmCalmCalmCalmCalmCalmW3CalmCalmSE3Calm3N4E5NW3CalmW5NW5
2 days agoNW6W5W5W5SW3S3CalmSW4SW4W5SW5W4W6W6W5W3NW6NW6W6W8SW7SW7SW6W5

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map
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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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