Saturday, September26, 2020
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L-36.com

Marine Weather and Tides
Breedsville, MI

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 7:35AMSunset 7:35PM Saturday September 26, 2020 8:35 PM EDT (00:35 UTC) Moonrise 4:32PMMoonset 1:01AM Illumination 73% Phase: Waxing Gibbous; Moon at 10 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 Sat Sep 26 2020
.small craft advisory in effect through Sunday afternoon...
Through early evening..South winds 15 to 20 knots. Mostly Sunny. Waves 2 to 4 feet.
Tonight..South winds to 30 knots. Partly cloudy. Waves 3 to 5 feet building to 6 to 8 feet after midnight.
Sunday..Southwest winds 15 to 25 knots veering west 10 to 15 knots late in the day. Mostly cloudy with a chance of rain showers. Waves 5 to 7 feet subsiding to 2 to 4 feet late in the day.
Sunday night..West winds 10 to 20 knots. Rain showers likely. Waves 2 to 3 feet.
Monday..West winds 10 to 15 knots. Mostly cloudy with a chance of rain showers. Waves 2 to 4 feet.
Monday night..Northwest winds 10 to 15 knots. Partly cloudy with a chance of rain showers. Waves 2 to 4 feet.
Tuesday..West winds 10 to 20 knots. Partly Sunny. Waves 2 to 4 feet.
Wednesday..West winds 20 to 25 knots. Mostly Sunny with a chance of rain showers. Waves 4 to 6 feet.
Thursday..Northwest winds 15 to 20 knots. Partly Sunny with a chance of rain showers. Waves 4 to 6 feet.
LMZ845 Expires:202009270800;;406412 FZUS53 KGRR 262006 NSHGRR Nearshore Marine Forecast National Weather Service Grand Rapids MI 405 PM EDT Sat Sep 26 2020 For waters within five nautical miles of shore on Lake Michigan LMZ845-270800-


7 Day Forecast for Marine Location Near Breedsville, MI
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location: 42.46, -86.13     debug


Area Discussion for - Grand Rapids, MI
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FXUS63 KGRR 262330 AFDGRR

Area Forecast Discussion National Weather Service Grand Rapids MI 730 PM EDT Sat Sep 26 2020

LATEST UPDATE . Aviation

SYNOPSIS. Issued at 330 PM EDT Sat Sep 26 2020

- Mainly dry tonight with increasing chances for rain on Sunday

- Major pattern change to take place into the upcoming work week

DISCUSSION. (This evening through next Saturday) Issued at 330 PM EDT Sat Sep 26 2020

-- Mainly dry tonight with increasing chances for rain on Sunday

A warm and mainly dry southwest flow will be in place tonight. High resolution models are not showing much rain which makes sense given the front is still upstream and the main shortwave is off to the north across the Northern Great Lakes. It will remain breezy through the night as strong winds are noted in the lowest couple thousand feet.

-- Major pattern change to take place into the upcoming work week

A major pattern change is set to take place behind a frontal passage that occurs on Sunday. The colder air behind the front moves in Sunday night and Monday. Additional post frontal rain showers are expected Sunday night and Monday.

The remainder of the week looks to be very fall like with lake effect rain showers. Temperatures will start the week in the low 60s, but quickly will taper back into the 50s for the remainder of the week. Normal highs today are around 70 and 50s for highs will feel wildly different as we move through the upcoming work week compared to what we have had of late.

Lake water temperatures at this point are around 18C. So, +8C at 850mb/s will get us lake generated clouds and +5C will result in lake effect rain showers. We dip below +5C on Monday and continue to cool through the week. Lake effect rain showers and clouds should be prevalent. By next Saturday 850mb temps will be at -3C, so delta t's will be in excess of 20C. Rain showers, clouds and the potential for waterspouts over Lake Michigan will be a common theme through the week.

AVIATION. (For the 00Z TAFS through 00Z Sunday evening) Issued at 730 PM EDT Sat Sep 26 2020

VFR conditions will continue through Sunday morning then some stratus with ceilings around 2500 feet AGL will be spreading across southern and central Lower Michigan by Sunday afternoon.

Sfc winds will be around 10 knots with occasional gusts to 20 knots through Sunday. LLWS can be expected through Sunday morning as well.

MARINE. Issued at 330 PM EDT Sat Sep 26 2020

5 footers are currently being reported at Ludington and Muskegon in south-southwest flow. At the south end of our nearshore area the South Haven Buoy has 3 footers. Waves should continue to increase this evening and tonight with a core of 50-55 knot winds moving through between 800pm and 800am. This should build waves to 4 to 5 feet in the far south and likely 6 to 10 feet in the north.

Small Craft Advisory and Beach Hazard Statements are in effect through 200pm on Sunday for the entire lakeshore. So, we reeled in the BHS by two hours and extended it to the south as well.

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

LM . Small Craft Advisory until 2 PM EDT Sunday for LMZ844>849.



SYNOPSIS . Duke DISCUSSION . Duke AVIATION . Ostuno MARINE . Duke


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SVNM4 - South Haven, MI 9 mi36 min SE 15 G 18 74°F
45168 12 mi16 min ESE 16 G 21 72°F 67°F4 ft1005.1 hPa60°F
HLNM4 - 9087031 - Holland, MI 22 mi48 min SSE 9.9 G 14 73°F 65°F1004.7 hPa62°F
45029 31 mi16 min ESE 9.7 G 14 68°F 65°F4 ft1004.4 hPa62°F
SJOM4 - St. Joseph, MI 32 mi36 min S 4.1 G 11 74°F 1006.4 hPa (-1.4)
MKGM4 - Muskegon, MI 54 mi26 min S 15 G 16 67°F 1004.3 hPa64°F

Wind History for Holland, MI
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
South Haven, South Haven Area Regional Airport, MI10 mi41 minS 11 G 1510.00 miFair73°F60°F65%1006.1 hPa
Holland - West Michigan Regional Airport, MI20 mi43 minS 510.00 miFair68°F61°F78%1005.4 hPa

Link to 5 minute data for KLWA

Wind History from LWA (wind in knots)
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Last 24hrCalmCalmS5S5S5S4S4S4CalmS3S4S7S7S8SW7
G15
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W8W6W3SW3SW10S6S9
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1 day agoCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmS3S3S4SW4W5W8W4NW4NW3CalmCalm
2 days agoCalmCalmCalmSW3SW4SW3CalmS3CalmS3CalmCalmSW5S4S3W6W7W9SW7W8W6SW3S5Calm

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map
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wmap_A
GEOS Local Image of    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Ground Weather Radar Station Grand Rapids/Muskegon, MI
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weather_mapweather_map weather_map


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