Sunday, March29, 2020
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Marine Weather and Tides
Douglas, MI

Version 3.4
NOTICE
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 7:28AMSunset 8:08PM Sunday March 29, 2020 1:22 PM EDT (17:22 UTC) Moonrise 9:21AMMoonset 12:00AM Illumination 31% Phase: Waxing Crescent; Moon at 6 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- 1105 Am Edt Sun Mar 29 2020
.gale warning in effect until 11 pm edt this evening...
Rest of today..Southwest gales to 40 knots. Cloudy with a chance of rain showers. Waves 7 to 10 feet.
Tonight..West gales to 35 knots decreasing to 30 knots after midnight. Cloudy with a chance of rain showers. Waves 7 to 10 feet.
Monday..Northwest winds 20 to 25 knots. Mostly cloudy. A chance of rain showers. Waves 6 to 8 feet.
Monday night..North winds 10 to 20 knots. Partly cloudy. Waves 3 to 5 feet subsiding to 2 to 3 feet toward daybreak.
Tuesday..North winds 10 to 15 knots. Mostly cloudy. Waves 1 to 3 feet.
Wednesday..North winds around 10 knots backing northwest. Partly Sunny. Waves around 1 foot.
Thursday..Southwest winds around 10 knots. Mostly cloudy with a chance of rain showers. Waves 1 foot or less.
LMZ845 Expires:202003292100;;257601 FZUS53 KGRR 291506 NSHGRR Nearshore Marine Forecast National Weather Service Grand Rapids MI 1105 AM EDT Sun Mar 29 2020 For waters within five nautical miles of shore on Lake Michigan LMZ845-292100-


7 Day Forecast for Marine Location Near Douglas, MI
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location: 42.64, -86.21     debug


Area Discussion for - Grand Rapids, MI
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FXUS63 KGRR 291442 AFDGRR

Area Forecast Discussion National Weather Service Grand Rapids MI 1042 AM EDT Sun Mar 29 2020

LATEST UPDATE . Update

SYNOPSIS. Issued at 258 AM EDT Sun Mar 29 2020

Low pressure will move northeast of Lower Michigan today with strong winds gusting over 40 mph into this evening along with some rain showers. Conditions will improve for Monday and he rest of the week looks fair with temperatures cooler than average.

UPDATE. Issued at 1039 AM EDT Sun Mar 29 2020

No changes to the headlines. Surface observations and spotter reports have indicated winds are increasing as expected. Frequent gusts over 40 mph have been observed and will continue to be observed throughout the day prior to winds decreasing this evening. Additonally, showers will continue to develop as the upper low moves closer.

DISCUSSION. (Today through next Saturday) Issued at 258 AM EDT Sun Mar 29 2020

- Strong winds Today and into Tonight

Wind advisory in effect for today with soundings showing 40 knots in the mixing layer into this evening. Deep mixing will be limited by wraparound moisture moving in, so we do not expect 50 knots to mix down as suggested by the GFS.

Coastal flood advisory also in effect as strong onshore flow and waves building to 10 feet will cause some beach erosion and flooding adjacent to Lake Michigan.

- Quiet rest of the week

Low tracks well south of Lower Michigan Tuesday and Wednesday with a period to dry out before some showers arrive with a cold front by Saturday. SO a quiet week with temperatures averaging slightly below normal for early April.

AVIATION. (For the 12Z TAFS through 12Z Monday morning) Issued at 705 AM EDT Sun Mar 29 2020

VFR conditions early this morning as the low clouds break up and the wind mixes out the fog. Then stratus and showers move back in later this morning as the back side of the low moves through with MVFR and patchy IFR.

Southwest to west winds will increase this morning with gusts over 30 knots later this morning into this evening.

MARINE. Issued at 247 AM EDT Sun Mar 29 2020

No changes to the Gale Warning as winds will gust over 35 knots into this evening. The warning will be replaced with a Small Craft Advisory as winds and waves will remain a hazard to small craft until Monday night.

GRR WATCHES/WARNINGS/ADVISORIES. MI . Wind Advisory until 8 PM EDT this evening for MIZ043>046-050>052- 056>059-064>067-071>074.

Lakeshore Flood Advisory until 11 PM EDT this evening for MIZ043- 050-056-064-071.

LM . Small Craft Advisory until 11 PM EDT this evening for LMZ849.

Gale Warning until 11 PM EDT this evening for LMZ844>848.



UPDATE . 04 SYNOPSIS . Ostuno DISCUSSION . Ostuno AVIATION . Ostuno MARINE . Ostuno


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
HLNM4 - 9087031 - Holland, MI 9 mi52 min SSW 21 G 24
SVNM4 - South Haven, MI 17 mi42 min SSW 24 G 26 41°F
MKGM4 - Muskegon, MI 41 mi32 min SW 23 G 25 41°F 999.4 hPa37°F

Wind History for Holland, MI
(wind in knots)    EDIT      (on/off)   Help
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Last
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E12
G16
E13
G16
E8
G12
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G12
E10
G13
NE13
G19
E16
G21
E12
G18
E17
G21
E20
G28
E17
G24
E18
G24
E19
G26
E19
G25
S16
G23
S16
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S14
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S24
S24
G30
S21
S20
G25
1 day
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NE14
G18
E14
E10
G14
E9
G12
NE11
G14
E12
G15
E11
G16
E10
G14
E12
G16
E14
G18
E8
E16
E16
G20
E18
G24
E14
G17
NW10
G15
E17
E16
G20
NE10
G16
E11
G15
NE14
G19
E14
G18
E16
G21
E16
G24
2 days
ago
N8
G12
N11
G14
NW7
W4
W10
W1
SE1
SE1
NE2
N3
NW4
N2
E2
NE5
E5
E5
G8
E7
G10
NE7
NE10
G14
NE10
G14
E13
G17
E16
G21
E11
G17
E12
G18

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Holland - West Michigan Regional Airport, MI10 mi29 minSW 22 G 3110.00 miOvercast and Breezy45°F37°F74%1000.2 hPa
South Haven, South Haven Area Regional Airport, MI20 mi27 minSW 22 G 3510.00 miOvercast and Breezy44°F37°F77%1001 hPa

Link to 5 minute data for KBIV

Wind History from BIV (wind in knots)
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Last 24hrE10E9E8--E11E9
G18
E9E12
G18
E14E14
G23
E14
G21
SE13
G21
SE11SE9S7SW7S6SW14
G20
SW12SW23
G32
SW26
G37
SW23
G33
SW18
G35
SW22
G31
1 day agoE11E8E12--E10E9E7E7E8E7E14SE16
G22
SE12
G21
NE7NW7E11SE10NE7E7NE8E10E17
G25
SE11E12
2 days agoNW5CalmW3NW11S3CalmN3CalmCalmNW3CalmCalmE5E6E7E7E5E5NE8E10E11E10
G17
E14E12

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
Wind Forecast for Grand Rapids, MI (13,3,4,5)
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Ground Weather Radar Station Grand Rapids/Muskegon, MI
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weather_mapweather_map weather_map

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Disclaimer:
The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerous of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.