Marine Weather and Tide Forecast for Saugatuck, MI
 | Sunrise 6:13 AM Sunset 9:08 PM Moonrise 2:14 AM Moonset 1:40 PM |
LMZ874 Expires:202505210915;;877126 Fzus63 Kmkx 210205 Glflm
open lake forecast for lake michigan national weather service milwaukee/sullivan wi 905 pm cdt Tue may 20 2025
for waters beyond five nautical miles of shore on lake michigan.
waves are provided as a range of significant wave heights, which is the average of the highest 1/3 of the wave, along with the average height of the highest 10% of the waves which will occasionally be encountered.
Synopsis -
breezy easterly winds will continue into tonight, becoming northerly by Wednesday afternoon as low pressure of 29.5 inches travels from eastern iowa to the eastern great lakes. A few gales will likely persist into late afternoon in the south, with winds then still gusting to around 30 knots this evening into tonight. A gale warning remains in effect until 21z over roughly the southern 1/3 of the lake.
breezy northerly winds will continue on Thursday as the low stalls over the eastern great lakes, while high pressure of 30.2 inches approaches from the west. Lighter winds are likely by the weekend as the high moves overhead.
lmz080-669-671-673-675-777-779-870-872-874-876-878-210915- lake michigan from michigan city in to st. Joseph mi 5 nm offshore to mid lake- lake michigan from sheboygan to port washington wi 5 nm offshore to mid lake- lake michigan from port washington to north point light wi 5 nm offshore to mid lake- lake michigan from north point light to wind point wi 5 nm offshore to mid lake- lake michigan from wind point wi to winthrop harbor il 5 nm offshore to mid lake- lake michigan from winthrop harbor to wilmette harbor il 5 nm offshore to mid lake- lake michigan from wilmette harbor il to michigan city in 5 nm offshore to mid lake- lake michigan from whitehall to pentwater mi 5 nm offshore to mid lake- lake michigan from grand haven to whitehall mi 5 nm offshore to mid lake- lake michigan from holland to grand haven mi 5 nm offshore to mid lake- lake michigan from south haven to holland mi 5 nm offshore to mid lake- lake michigan from st. Joseph to south haven mi 5 nm offshore to mid lake- 905 pm cdt Tue may 20 2025
sheboygan wi to pentwater mi south - .
Rest of tonight - East winds to 30 kt. Chance of rain showers and slight chance of Thunderstorms late this evening, then chance of rain showers overnight. Waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to 7 ft occasionally to 9 ft.
Wednesday - Northeast winds 15 to 25 kt becoming north. Rain showers likely in the morning, then rain showers in the afternoon. Waves 4 to 6 ft occasionally to 8 ft.
Wednesday night - North winds 15 to 25 kt. Rain showers in the evening, then chance of rain showers overnight. Waves 4 to 6 ft occasionally to 8 ft.
Thursday - North winds 15 to 25 kt increasing to 30 kt. Waves 4 to 7 ft occasionally to 9 ft building to 5 to 8 ft occasionally to 10 ft.
Thursday night - North winds 15 to 25 kt becoming northwest 10 to 20 kt. Waves 5 to 8 ft occasionally to 10 ft subsiding to 3 to 5 ft.
Friday - Northwest winds 15 to 25 kt becoming north. Waves 4 to 6 ft occasionally to 8 ft.
Friday night - North winds 10 to 20 kt diminishing to 5 to 10 kt. Waves 3 to 5 ft subsiding to 1 to 3 ft.
Saturday - North winds 10 to 15 kt increasing to 10 to 20 kt. Waves 1 to 3 ft.
Sunday - Northeast winds 10 to 15 kt becoming north 10 to 20 kt. Waves 1 to 3 ft.
open lake forecast for lake michigan national weather service milwaukee/sullivan wi 905 pm cdt Tue may 20 2025
for waters beyond five nautical miles of shore on lake michigan.
waves are provided as a range of significant wave heights, which is the average of the highest 1/3 of the wave, along with the average height of the highest 10% of the waves which will occasionally be encountered.
breezy easterly winds will continue into tonight, becoming northerly by Wednesday afternoon as low pressure of 29.5 inches travels from eastern iowa to the eastern great lakes. A few gales will likely persist into late afternoon in the south, with winds then still gusting to around 30 knots this evening into tonight. A gale warning remains in effect until 21z over roughly the southern 1/3 of the lake.
breezy northerly winds will continue on Thursday as the low stalls over the eastern great lakes, while high pressure of 30.2 inches approaches from the west. Lighter winds are likely by the weekend as the high moves overhead.
lmz080-669-671-673-675-777-779-870-872-874-876-878-210915- lake michigan from michigan city in to st. Joseph mi 5 nm offshore to mid lake- lake michigan from sheboygan to port washington wi 5 nm offshore to mid lake- lake michigan from port washington to north point light wi 5 nm offshore to mid lake- lake michigan from north point light to wind point wi 5 nm offshore to mid lake- lake michigan from wind point wi to winthrop harbor il 5 nm offshore to mid lake- lake michigan from winthrop harbor to wilmette harbor il 5 nm offshore to mid lake- lake michigan from wilmette harbor il to michigan city in 5 nm offshore to mid lake- lake michigan from whitehall to pentwater mi 5 nm offshore to mid lake- lake michigan from grand haven to whitehall mi 5 nm offshore to mid lake- lake michigan from holland to grand haven mi 5 nm offshore to mid lake- lake michigan from south haven to holland mi 5 nm offshore to mid lake- lake michigan from st. Joseph to south haven mi 5 nm offshore to mid lake- 905 pm cdt Tue may 20 2025
sheboygan wi to pentwater mi south - .
LMZ800
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7 Day Forecast for Marine Location Near Saugatuck, MI
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Area Discussion for Grand Rapids, MI
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FXUS63 KGRR 210505 AFDGRR
Area Forecast Discussion National Weather Service Grand Rapids MI 105 AM EDT Wed May 21 2025
KEY MESSAGES
- Rainy through Wednesday, then mostly dry for the weekend
- Chilly through Friday, then a warming trend develops
DISCUSSION
Issued at 232 PM EDT Tue May 20 2025
- Rainy through Wednesday, then mostly dry for the weekend
Regional radar shows an arcing band of rain from Minnesota southeast across Lower MI moving north. All areas of the cwa have seen rain except the far northeast, but the rain will arrive there within the next hour or two.
The forecast is largely on track as a surface low over Iowa combines with an inverted upper trough to push moisture northward across the cwa. There is some convection over IL that's trying to move north. But limited instability on the north side of the low track will limit how far north it gets. It's possible that a non severe storm or two could sneak into the far southwest cwa later this afternoon and early evening. Otherwise, the storm track across northern IL/IN still looks pretty good. The cwa will be largely on the north side of the track which will feature a brisk easterly wind. Winds have been gusting over 30 mph west of US-131 but will diminish later this evening as the low gets closer and the pressure gradient relaxes. It's going to take another day before the surface low moves east of the cwa and so widespread light rain will continue Wednesday. Showers may continue into late Thursday/early Friday over the eastern cwa due to a strong sort wave pinwheeling around the upper low and mainly affecting eastern Lower MI; the western cwa should remain dry late Thursday into Friday.
The upper low is progd to shear out and lift north Friday and continue through the weekend and be replaced by high pressure.
Thus, we'll begin to see some sunshine develop from west to east Friday.
- Chilly through Friday, then a warming trend develops
The upper low and surface low moving through the Midwest will continue to create chilly conditions on the north side of the low track. Highs in the 50s are expected through Friday due to an easterly flow from Ontario. Once the lows move east and heights rise, temperatures will begin to rise into the 60s by Saturday.
Even that, though, will be 5 to 10 degrees below the normal highs in the lower 70s.
AVIATION /00Z TAFS THROUGH 00Z THURSDAY/
Issued at 105 AM EDT Wed May 21 2025
TAF period begins with widespread IFR at GRR, BTL and AZO. MVFR cigs are entrenched at LAN, MKG and JXN. Bands of showers from the transiting low continue to pass over southern Lower Michigan.
Showers could be heavier at times which may drop vsbys down to MVFR. With nothing to scour out the deep moisture, the low clouds will persist today into Thursday so expect MVFR to IFR cigs to persist.
MARINE
Issued at 232 PM EDT Tue May 20 2025
Gale warning remains in effect until 5 pm south of Whitehall.
Buoys are gusting well over 30 knots in this area and so there are no changes to the warning. Winds are expected to diminish below gales later this afternoon and a small craft advisory is in effect for all nearshore zones from 5 pm until 2am tonight.
Wind will increase again Thursday and another advisory may be needed Thursday and Friday.
GRR WATCHES/WARNINGS/ADVISORIES
MI...None.
MARINE...Small Craft Advisory until 2 AM EDT early this morning for LMZ844>849.
Area Forecast Discussion National Weather Service Grand Rapids MI 105 AM EDT Wed May 21 2025
KEY MESSAGES
- Rainy through Wednesday, then mostly dry for the weekend
- Chilly through Friday, then a warming trend develops
DISCUSSION
Issued at 232 PM EDT Tue May 20 2025
- Rainy through Wednesday, then mostly dry for the weekend
Regional radar shows an arcing band of rain from Minnesota southeast across Lower MI moving north. All areas of the cwa have seen rain except the far northeast, but the rain will arrive there within the next hour or two.
The forecast is largely on track as a surface low over Iowa combines with an inverted upper trough to push moisture northward across the cwa. There is some convection over IL that's trying to move north. But limited instability on the north side of the low track will limit how far north it gets. It's possible that a non severe storm or two could sneak into the far southwest cwa later this afternoon and early evening. Otherwise, the storm track across northern IL/IN still looks pretty good. The cwa will be largely on the north side of the track which will feature a brisk easterly wind. Winds have been gusting over 30 mph west of US-131 but will diminish later this evening as the low gets closer and the pressure gradient relaxes. It's going to take another day before the surface low moves east of the cwa and so widespread light rain will continue Wednesday. Showers may continue into late Thursday/early Friday over the eastern cwa due to a strong sort wave pinwheeling around the upper low and mainly affecting eastern Lower MI; the western cwa should remain dry late Thursday into Friday.
The upper low is progd to shear out and lift north Friday and continue through the weekend and be replaced by high pressure.
Thus, we'll begin to see some sunshine develop from west to east Friday.
- Chilly through Friday, then a warming trend develops
The upper low and surface low moving through the Midwest will continue to create chilly conditions on the north side of the low track. Highs in the 50s are expected through Friday due to an easterly flow from Ontario. Once the lows move east and heights rise, temperatures will begin to rise into the 60s by Saturday.
Even that, though, will be 5 to 10 degrees below the normal highs in the lower 70s.
AVIATION /00Z TAFS THROUGH 00Z THURSDAY/
Issued at 105 AM EDT Wed May 21 2025
TAF period begins with widespread IFR at GRR, BTL and AZO. MVFR cigs are entrenched at LAN, MKG and JXN. Bands of showers from the transiting low continue to pass over southern Lower Michigan.
Showers could be heavier at times which may drop vsbys down to MVFR. With nothing to scour out the deep moisture, the low clouds will persist today into Thursday so expect MVFR to IFR cigs to persist.
MARINE
Issued at 232 PM EDT Tue May 20 2025
Gale warning remains in effect until 5 pm south of Whitehall.
Buoys are gusting well over 30 knots in this area and so there are no changes to the warning. Winds are expected to diminish below gales later this afternoon and a small craft advisory is in effect for all nearshore zones from 5 pm until 2am tonight.
Wind will increase again Thursday and another advisory may be needed Thursday and Friday.
GRR WATCHES/WARNINGS/ADVISORIES
MI...None.
MARINE...Small Craft Advisory until 2 AM EDT early this morning for LMZ844>849.
| Stations | Dist | Age | Wind | Air | Water | Waves | inHg | DewPt |
| 45029 | 19 mi | 42 min | NE 16G | 48°F | 47°F | 2 ft | 46°F | |
| HLNM4 - 9087031 - Holland, MI | 23 mi | 44 min | ENE 16G | 55°F | 29.69 | |||
| 45214 | 24 mi | 52 min | 42°F | 4 ft | ||||
| MKGM4 - Muskegon, MI | 31 mi | 32 min | E 16G | 49°F | 29.72 | 47°F | ||
| 45168 | 34 mi | 42 min | ESE 7.8G | 50°F | 48°F | 1 ft | 29.72 | 45°F |
| SVNM4 - South Haven, MI | 35 mi | 32 min | ENE 9.9G | 49°F |
Wind History for Holland, MI
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Link to 1 hour of 5 minute data for KBIV
Terminal Aerodrome Forecast (TAF) for KBIV
Wind History Graph: BIV
(wind in knots)
GEOS Local Image of great lakes
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Grand Rapids/Muskegon, MI,
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