Saturday, October16, 2021
Privacy Policy
L-36.com

Marine Weather and Tides
Douglas, 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 7:58AMSunset 7:01PM Saturday October 16, 2021 3:58 AM EDT (07:58 UTC) Moonrise 4:46PMMoonset 2:32AM Illumination 77% 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
    EDIT      (on/off)   Help
LMZ845 South Haven To Holland Mi- 1005 Pm Edt Fri Oct 15 2021
.small craft advisory in effect through Sunday evening...
Rest of tonight..Northwest winds 15 to 25 knots. Cloudy through about 2 am then becoming partly cloudy. A chance of rain showers. Waves 5 to 7 feet.
Saturday..Northwest winds to 30 knots. Mostly cloudy with a slight chance of rain showers. Isolated waterspouts. Waves 5 to 7 feet.
Saturday night..Northwest winds to 30 knots. Partly cloudy. Waves 6 to 9 feet.
Sunday..Northwest winds around 20 knots. Sunny. Waves 4 to 6 feet.
Sunday night..Northwest winds 10 to 20 knots. Clear. Waves 3 to 5 feet.
Monday..Northwest winds around 10 knots backing west late in the day. Sunny. Waves 2 to 3 feet.
Tuesday..Southwest winds 10 to 15 knots. Mostly Sunny. Waves 2 to 3 feet.
Wednesday..Southwest winds 10 to 15 knots. Mostly Sunny. Waves 2 to 3 feet.
LMZ845 Expires:202110160900;;749278 FZUS53 KGRR 160205 NSHGRR Nearshore Marine Forecast National Weather Service Grand Rapids MI 1005 PM EDT Fri Oct 15 2021 For waters within five nautical miles of shore on Lake Michigan LMZ845-160900-


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


Area Discussion for - Grand Rapids, MI
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS63 KGRR 160737 AFDGRR

Area Forecast Discussion National Weather Service Grand Rapids MI 337 AM EDT Sat Oct 16 2021

LATEST UPDATE . Synopsis/Discussion/Marine

SYNOPSIS. Issued at 337 AM EDT Sat Oct 16 2021

- Lake effect rain showers today

- Mainly dry from late tonight through Tuesday night

- Rain chances increase for mid to late week

- Temperatures on a bit of a roller coaster next 7 days

DISCUSSION. (Today through next Friday) Issued at 337 AM EDT Sat Oct 16 2021

- Lake effect rain showers today

We are still expecting lake effect clouds and rain showers to fill in today. At this point though lake effect clouds are almost non existent. There will likely be a diurnal flare to the precipitation as well, so more activity is expected after about 1000am this morning. This lake effect rain shower event does look to be a little bit more moisture starved than previously thought. At this point still planning on scattered precipitation with 30/40 percent pops. Any precipitation should taper off rapidly with the setting sun which is the time "deeper" moisture pulls away. So, showers may be confined to the mid morning through early evening hours.

- Mainly dry from late tonight through Tuesday night

Ridging both at the surface and aloft should keep things dry from late tonight into Tuesday night. The ridge is centered over our area on Monday and Tuesday with BUFKIT overviews showing very dry profiles.

- Rain chances increase for mid to late week

Rain chances increase during the mid to late week time frame as an upper shortwave moves into the area. Additional energy moves in from the northwest with time and a trough is in place aloft by the end of the week. Occasional rain showers are expected from Wednesday through Friday. Delta T's will be large enough for lake effect rain showers as well in the Thursday and Friday time frame.

- Temperatures on a bit of a roller coaster next 7 days

Temperatures today will hold in the 50s, rising into the upper 60s to around 70 early in the work week under high pressure and then falling back into the 50s by late in the week with colder air filtering in with the upper trough. Certainly is quite normal to see temperature swings in the fall, and we are in more of a normal autumnal pattern now.

AVIATION. (For the 06Z TAFS through 06Z Saturday night) Issued at 113 AM EDT Sat Oct 16 2021

Showers continue to shift eastward overnight with light showers still occuring at LAN, JXN, BTL and AZO. MVFR cigs remains possible through 15Z. Conditions will improve with gust northwesterly winds today. Wind gusts upwards of 25kts are possible. Winds will subside early evening around sunset.

MARINE. Issued at 337 AM EDT Sat Oct 16 2021

We have extended the Small Craft Advisory through Sunday night. It now expires at 800am on Monday. Northwest winds of 20 to 30 knots will be common all weekend. Winds will be of the cold air advection variety, so they will be efficient (cold air is more dense) in digging into the water surface. Waves much of the weekend will be in the 5 to 9 foot range. Conditions will certainly be hazardous to smaller craft. Waves will sweep across pier decks, especially north piers and the outer portions of the south piers.

We are not expecting water levels to be close to Lakeshore Flood Advisory levels, so no concerns with flooding or significant erosion.

Waterspouts will be possible today in the deeper showers that occur. Delta T's over the lake will be around 18C which is a proxy for low level instability and a value that is on the high side. So, plenty of instability will be in place. Expecting lake effect clouds/showers to be fairly deep through the day on Saturday, so a few waterspouts will be possible.

Conditions over Lake Michigan should be much more tame early next week as high pressure will be sliding through the area which will bring much calmer conditions both in terms of winds and waves.

GRR WATCHES/WARNINGS/ADVISORIES. MI . None. LM . Small Craft Advisory until 8 AM EDT Monday for LMZ844>849.



SYNOPSIS . Duke DISCUSSION . Duke AVIATION . Ceru MARINE . Duke


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
HLNM4 - 9087031 - Holland, MI 9 mi64 min WNW 19G23 59°F 65°F1008.8 hPa46°F
SVNM4 - South Haven, MI 17 mi58 min 19G24 60°F
45029 18 mi48 min NW 19G25 60°F 67°F2 ft1010.1 hPa46°F
45168 18 mi48 min W 16G21 60°F 67°F1010.7 hPa46°F
45161 38 mi58 min NW 14G21 59°F 2 ft1010.7 hPa (-0.8)
SJOM4 - St. Joseph, MI 40 mi58 min NW 15G19 60°F 1011.5 hPa (-1.4)
MKGM4 - Muskegon, MI 41 mi48 min N 19G22 58°F 1010.6 hPa44°F
45007 - S MICHIGAN 43NM East Southeast of Milwaukee, WI 43 mi48 min NW 19G23 57°F 65°F1011 hPa44°F

Wind History for Holland, MI
(wind in knots)    EDIT      (on/off)   Help
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
-12
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
12
am
1
am
2
am
3
am
Last
24hr
E4
E5
E5
E5
NE3
E4
E5
E4
NW3
G6
N2
NW13
NW18
N17
N12
N4
G7
N6
NW16
NW13
NW14
G17
NW12
G15
W12
G16
W10
G13
NW19
1 day
ago
S17
S17
S17
S15
S15
SW8
G11
S13
W10
W8
W10
SW10
G13
W10
SW9
SW11
SW11
G14
SW10
SW10
SW11
SW12
SW9
SW9
SW10
W8
W3
2 days
ago
W9
G12
SW8
SW10
SW9
SE5
S9
S8
S10
SW9
SW5
S9
S4
S5
SE7
G10
SE7
G10
SE8
G13
SE11
G18
SE17
G23
S15
G23
S14
G17
S16
G20
S17
G21
S19
G24

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Holland - West Michigan Regional Airport, MI10 mi2.1 hrsN 010.00 miFair52°F50°F93%1011 hPa
South Haven, South Haven Area Regional Airport, MI20 mi63 minNW 510.00 miOvercast57°F44°F63%1010.8 hPa

Link to 5 minute data for KBIV

Wind History from BIV (wind in knots)
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
12
am
1
am
2
am
Last 24hr0000000E3E40SE5S3NW8N9NW10
G18
NW5N3NW4N500N500
1 day agoS8S7S8S9S7S6SW6SW11
G21
SW10W6W5W7
G16
W4SW5W8W7W4000S3000
2 days agoSW4S4S4--0S4S4S6S5S8S75SW7S5S6S5SE8SE8S9S8S10S8S7S7

Tide / Current Tables for
   EDIT   Weekend mode (on/off)   (on/off)   Help
Tide / Current Tables for
   EDIT      (on/off)   Help
Weather Map
       (on/off)   Help Weather Map
wmap_A
GEOS Local Image of    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.
Link to Loop

Other links: GEOS-West     Contential US     Full GOES-East
Ground Weather Radar Station




Please read website Cookie, Privacy, and Disclamers by clicking HERE.