Marine Weather and Tide Forecast for South Haven, MI
May 2, 2024 4:43 PM EDT (20:43 UTC) Change Location
 | Sunrise 6:34 AM Sunset 8:48 PM Moonrise 2:59 AM Moonset 1:15 PM |
LMZ844 St Joseph To South Haven Mi- 405 Pm Edt Thu May 2 2024
Through early evening - Southeast winds around 15 knots. Partly Sunny with a chance of showers and Thunderstorms. Waves 1 foot or less.
Tonight - South winds 10 to 15 knots veering southwest toward daybreak. Rain showers likely and a chance of Thunderstorms. Waves 1 foot or less.
Friday - Northwest winds 10 to 15 knots. Rain showers likely and a slight chance of Thunderstorms. Waves around 1 foot.
Friday night - North winds around 10 knots veering northeast after midnight. Partly cloudy. Waves around 1 foot.
Saturday - East winds around 10 knots veering southwest, then veering north late in the day. Mostly Sunny with a slight chance of rain showers. Waves around 1 foot.
Saturday night - North winds 5 to 10 knots backing northwest after midnight. Mostly cloudy with a chance of rain showers. Waves around 1 foot.
Sunday - Northwest winds 10 to 15 knots. Mostly Sunny. Waves 1 to 3 feet.
Monday - East winds 10 to 15 knots. Mostly Sunny with a chance of rain showers. Waves 1 foot or less.
Tuesday - South winds 15 to 20 knots. Rain showers and a chance of Thunderstorms. Waves 1 to 3 feet.
LMZ800
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Area Discussion for - Grand Rapids, MI
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FXUS63 KGRR 021925 AFDGRR
Area Forecast Discussion National Weather Service Grand Rapids MI 325 PM EDT Thu May 2 2024
KEY MESSAGES
- Showers and thunderstorms into Friday
- Mild with several chances for showers/storms
DISCUSSION
Issued at 304 PM EDT Thu May 2 2024
- Showers and thunderstorms into Friday
An upper level wave in the Upper Plains will track into the Western Great Lakes tonight. It takes on a negative tilt as it does. At the same time a low level jet will be tracking northeastward through Western Lower MI, generating lower level lift. Elevated instability will be present and PWAT values climb to well above normal levels at around 1.5 inches. Given the moisture, deep lift and presence of instability, showers and thunderstorms will become numerous tonight. High res models suggest several pockets of higher wind gusts could evolve overnight, but most indications are that they may struggle to reach severe criteria. The latest HRRR indicates the storms developing around Chicago will build northeast and into our CWA later this afternoon and into the evening. We did increase POPs accordingly.
On Friday the front will be pushing eastward through the CWA by mid afternoon. Thus any shower/storm activity will decrease from west to east through the early to mid afternoon hours. At this time the instability is progged to be limited so severe weather is not anticipated.
- Mild with several chances for showers/storms
A persistent long wave trough over the Rockies will send a steady stream of short waves toward the Great Lakes through the period.
Southwest winds aloft will also ensure that warm air flows across the cwa. Highs will be in the 70s throughout the period and nudge up to the 80 degree mark over the southwestern cwa Tuesday and Wednesday.
Saturday will probably be dry. However, a short wave moving across the region may give us some showers and perhaps a storm Saturday night.
Sunday looks dry, then another stronger wave arrives Monday night.
Strong low pressure over the northern plains is progd to push a warm front north into the cwa late Monday night. We'll likely see showers and storms develop along/ahead of the warm front with more development ahead of the trailing occluded front Tuesday.
Showers are possible again Thursday as the Plains low finally moves over the state.
AVIATION /18Z TAFS THROUGH 18Z FRIDAY/
Issued at 1216 PM EDT Thu May 2 2024
Low pressure moving toward the Great Lakes will push clouds over the terminals tonight. We'll see high clouds this afternoon and perhaps a weak shower passing close to AZO around 18z. Otherwise, more showers/storms are expected tonight.
Models show a fairly strong signal of MVFR/IFR moving across the terminals from northwest to southeast beginning around 07z at MKG and lasting roughly 5 hrs before returning to VFR. This also coincides with the showers/storms arriving and departing.
MARINE
Issued at 304 PM EDT Thu May 2 2024
With a low level jet track through the zones tonight the winds will be on the increase. They are currently progged to remain below criteria for small craft advisory so no headlines will be issued at this time. Outside of the winds increasing over the lake, gusty winds will accompany the showers and thunderstorms that track through Lower MI tonight.
GRR WATCHES/WARNINGS/ADVISORIES
MI...None.
MARINE...None.
Area Forecast Discussion National Weather Service Grand Rapids MI 325 PM EDT Thu May 2 2024
KEY MESSAGES
- Showers and thunderstorms into Friday
- Mild with several chances for showers/storms
DISCUSSION
Issued at 304 PM EDT Thu May 2 2024
- Showers and thunderstorms into Friday
An upper level wave in the Upper Plains will track into the Western Great Lakes tonight. It takes on a negative tilt as it does. At the same time a low level jet will be tracking northeastward through Western Lower MI, generating lower level lift. Elevated instability will be present and PWAT values climb to well above normal levels at around 1.5 inches. Given the moisture, deep lift and presence of instability, showers and thunderstorms will become numerous tonight. High res models suggest several pockets of higher wind gusts could evolve overnight, but most indications are that they may struggle to reach severe criteria. The latest HRRR indicates the storms developing around Chicago will build northeast and into our CWA later this afternoon and into the evening. We did increase POPs accordingly.
On Friday the front will be pushing eastward through the CWA by mid afternoon. Thus any shower/storm activity will decrease from west to east through the early to mid afternoon hours. At this time the instability is progged to be limited so severe weather is not anticipated.
- Mild with several chances for showers/storms
A persistent long wave trough over the Rockies will send a steady stream of short waves toward the Great Lakes through the period.
Southwest winds aloft will also ensure that warm air flows across the cwa. Highs will be in the 70s throughout the period and nudge up to the 80 degree mark over the southwestern cwa Tuesday and Wednesday.
Saturday will probably be dry. However, a short wave moving across the region may give us some showers and perhaps a storm Saturday night.
Sunday looks dry, then another stronger wave arrives Monday night.
Strong low pressure over the northern plains is progd to push a warm front north into the cwa late Monday night. We'll likely see showers and storms develop along/ahead of the warm front with more development ahead of the trailing occluded front Tuesday.
Showers are possible again Thursday as the Plains low finally moves over the state.
AVIATION /18Z TAFS THROUGH 18Z FRIDAY/
Issued at 1216 PM EDT Thu May 2 2024
Low pressure moving toward the Great Lakes will push clouds over the terminals tonight. We'll see high clouds this afternoon and perhaps a weak shower passing close to AZO around 18z. Otherwise, more showers/storms are expected tonight.
Models show a fairly strong signal of MVFR/IFR moving across the terminals from northwest to southeast beginning around 07z at MKG and lasting roughly 5 hrs before returning to VFR. This also coincides with the showers/storms arriving and departing.
MARINE
Issued at 304 PM EDT Thu May 2 2024
With a low level jet track through the zones tonight the winds will be on the increase. They are currently progged to remain below criteria for small craft advisory so no headlines will be issued at this time. Outside of the winds increasing over the lake, gusty winds will accompany the showers and thunderstorms that track through Lower MI tonight.
GRR WATCHES/WARNINGS/ADVISORIES
MI...None.
MARINE...None.
| Stations | Dist | Age | Wind | Air Temp | Water Temp | Waves | inHg | DewPt |
| SVNM4 - South Haven, MI | 1 mi | 44 min | ESE 13G | 76°F | ||||
| 45168 | 3 mi | 54 min | SE 12G | 69°F | 53°F | 1 ft | 29.89 | 50°F |
| SJOM4 - St. Joseph, MI | 24 mi | 44 min | S 1.9G | 80°F | 29.89 | |||
| HLNM4 - 9087031 - Holland, MI | 26 mi | 56 min | E 12G | 75°F | 57°F | 29.86 | ||
| 45029 | 35 mi | 54 min | SE 9.7G | 65°F | 50°F | 1 ft | 49°F | |
| MKGM4 - Muskegon, MI | 57 mi | 34 min | SE 13G | 73°F | 29.86 | 47°F |
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Airport Reports
EDIT (hide/show) Help Click EDIT to display multiple airports. Follow links for more data.| Airport | Dist | Age | Wind kt | Vis | Sky | Weather | Temp | DewPt | RH | inHg |
| KLWA SOUTH HAVEN AREA RGNL,MI | 3 sm | 28 min | SE 04 | 10 sm | Mostly Cloudy | 75°F | 50°F | 41% | 29.90 | |
| KBEH SOUTHWEST MICHIGAN RGNL,MI | 20 sm | 50 min | SSE 07G17 | 10 sm | Partly Cloudy | 81°F | 54°F | 39% | 29.89 |
Grand Rapids/Muskegon, MI,
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