Monday, June14, 2021
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Marine Weather and Tides
Pentwater, 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 6:02AMSunset 9:28PM Monday June 14, 2021 11:53 PM EDT (03:53 UTC) Moonrise 8:38AMMoonset 12:00AM Illumination 26% Phase: Waxing Crescent; Moon at 5 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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LMZ848 Whitehall To Pentwater Mi- 1005 Pm Edt Mon Jun 14 2021
Rest of tonight..North winds 5 to 15 knots. Mostly clear. Waves around 1 foot.
Tuesday..North winds 5 to 15 knots increasing to 15 to 25 knots. Sunny. Waves 1 to 2 feet building to 3 to 5 feet.
Tuesday night..North winds 10 to 20 knots. Mostly clear. Waves 2 to 4 feet subsiding to 1 to 3 feet after midnight.
Wednesday..North winds 10 to 15 knots. Sunny. Waves around 1 foot.
Wednesday night..North winds 5 to 10 knots veering southeast late at night, then veering south toward daybreak. Mostly clear. Waves around 1 foot.
Thursday..South winds 10 to 20 knots. Mostly Sunny. Waves 1 to 3 feet building to 2 to 4 feet late in the day.
Friday..South winds 10 to 20 knots veering west late in the day. Mostly Sunny with a chance of rain showers. Waves 2 to 4 feet.
Saturday..Northwest winds 10 to 15 knots. Sunny. Waves 1 to 3 feet.
LMZ848 Expires:202106150900;;282083 FZUS53 KGRR 150206 NSHGRR Nearshore Marine Forecast National Weather Service Grand Rapids MI 1005 PM EDT Mon Jun 14 2021 For waters within five nautical miles of shore on Lake Michigan LMZ848-150900-


7 Day Forecast for Marine Location Near Pentwater, MI
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location: 43.78, -86.43     debug


Area Discussion for - Grand Rapids, MI
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FXUS63 KGRR 142329 AFDGRR

Area Forecast Discussion National Weather Service Grand Rapids MI 729 PM EDT Mon Jun 14 2021

LATEST UPDATE . Aviation

SYNOPSIS. Issued at 303 PM EDT Mon Jun 14 2021

- Small risk for an isolated thunderstorm this afternoon/eve

- Higher chance for thunderstorms Thursday night into Friday

- Below normal precipitation into Thursday

UPDATE. Issued at 451 PM EDT Mon Jun 14 2021

I have increased the threat of rain to between 40 and 60 percent over eastern Kent, Newaygo and Barry Counties due to a line of heavy rain showers. Radar undated rainfall is near a 1/4" in 15 minutes from some of these cells. Expect brief heavy rainfall if your in this area. The storms will diminish as the sun sets. Most of the area east of US-131 will see these showers this evening.

DISCUSSION. (This evening through next Monday) Issued at 303 PM EDT Mon Jun 14 2021

- Small risk for an isolated thunderstorm this afternoon/eve

ML CAPE values were only around 100 to 500 j/kg at this time . so not a lot of instability for any showers or storms to work with. Deep layer shear is 20 knots or less Thus. any coverage of showers or thunderstorms is predicted to be isolated at best. Inland locations such as Lansing and Mount Pleasant currently have the most instability.

- Higher chance for thunderstorms Thursday night into Friday

Models are advertising a stronger mid level wave dropping east southeast through the northern Great Lakes Region Thursday night into Friday. A low level jet does form Thursday night and this is when the instability increases. However the deep layer does not increase til later at night or during the day on Friday. Given the better dynamics . it will not take much instability to organize the convection and keep it going regardless of the time of the day. We will feature likely or better POPs for part of this period to account for the passage of this system.

- Below normal precipitation into Thursday

Overall though the pattern remains dry for the next couple of days An are of high pressure drops out of Ontario. down into Lower MI. Subsidence is seen in the bufkit overviews for much of the period which will act to limit the precipitation risk. Daytime highs will be fairly close to normal for this time of the year.

AVIATION. (For the 00Z TAFS through 00Z Tuesday evening) Issued at 727 PM EDT Mon Jun 14 2021

Showers are diminishing across the region and skies will become mostly clear tonight. Another weak area of low pressure will move south across the state Tuesday and it's possible a shower or two will develop. However chances are minimal and rain was left out of the TAFs.

MARINE. Issued at 655 PM EDT Mon Jun 14 2021

The latest marine observations show wave heights falling, with current wave heights no higher then 2 1/2 feet. Wind gusts are generally under 20 knots. Our beach web cams show waves in the order of 1 to 2 feet. I see no reason to believe wind or waves will increase tonight so I have expunged the marine headlines including the Beach Hazard Statement.

GRR WATCHES/WARNINGS/ADVISORIES. MI . None. LM . None.

UPDATE . WDM SYNOPSIS . MJS DISCUSSION . MJS AVIATION . 04 MARINE . WDM


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LDTM4 - 9087023 - Ludington, MI 12 mi60 min W 1.9 G 4.1 63°F 55°F
45024 15 mi44 min WNW 3.9 G 3.9 61°F 60°F1 ft1017.4 hPa
BSBM4 - Big Sable Point, MI 20 mi74 min NNW 6 G 7 61°F 1017.6 hPa
MEEM4 - Manistee Harbor, MI 33 mi74 min NNW 2.9 G 4.1 62°F 1018.3 hPa
MKGM4 - Muskegon, MI 39 mi34 min N 9.9 G 11 61°F 1016.4 hPa55°F
45161 41 mi54 min NNW 7.8 G 7.8 59°F 56°F1 ft1016.3 hPa (+1.2)

Wind History for Ludington, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ludington, Mason County Airport, MI12 mi59 minN 010.00 miFair59°F56°F89%1016.6 hPa

Link to 5 minute data for KLDM

Wind History from LDM (wind in knots)
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Last 24hrN10
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1 day agoNW5CalmN4CalmCalmCalmCalmCalmCalmNW8NW6NW6NW7NW4
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2 days agoCalmCalmE3CalmE3E3E4E3E4SE6SE4SW3SW7W7W7W8NW6N8
G15
N6NE5NE6N3CalmCalm

Tide / Current Tables for
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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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