L-36.com
Top   Marine   7-Day   NWS   Buoy   Airport   Tide   Map   GEOS   Radar   TAF  

Marine Weather and Tide Forecast for South Haven, MI

June 24, 2024 5:03 PM EDT (21:03 UTC) Change Location
Sunrise 6:05 AM   Sunset 9:28 PM
Moonrise 11:04 PM   Moonset 7:35 AM 
  Print   HELP   Reset   Save   Recall  News
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      HIDE   Help
LMZ844 St Joseph To South Haven Mi- 405 Pm Edt Mon Jun 24 2024

.small craft advisory in effect from 2 am edt Tuesday through Tuesday evening - .

Through early evening - North winds 5 to 10 knots. Sunny. Waves 1 foot or less.

Tonight - Southeast winds 5 to 10 knots veering south 10 to 20 knots late at night, then increasing to 30 knots toward daybreak. Mostly clear in the evening, then mostly cloudy with a chance of showers and Thunderstorms overnight. Some Thunderstorms may produce damaging winds overnight. Waves around 1 foot building to 2 to 4 feet toward daybreak.

Tuesday - Southwest winds to 30 knots decreasing to 10 to 20 knots late in the day. Partly Sunny with a chance of Thunderstorms and a slight chance of rain showers. Some Thunderstorms may be severe with damaging winds. Waves 3 to 5 feet.

Tuesday night - West winds 5 to 15 knots. Partly cloudy with a chance of showers and Thunderstorms. Some Thunderstorms may produce damaging winds. Waves 1 to 2 feet.

Wednesday - Northwest winds 15 to 20 knots. Mostly Sunny. Waves 1 to 2 feet building to 2 to 4 feet.

Wednesday night - North winds 10 to 20 knots. Mostly clear. Waves 2 to 4 feet subsiding to 1 to 3 feet toward daybreak.

Thursday - North winds around 10 knots. Sunny. Waves 1 to 2 feet.

Friday - South winds 15 to 20 knots. Partly Sunny with a chance of rain showers. Waves around 1 foot.

Saturday - Southwest winds 15 to 20 knots veering west late in the day. Mostly cloudy with a chance of showers and Thunderstorms. Waves 2 to 3 feet.

LMZ800
No data


7 Day Forecast for Marine Location Near South Haven city, MI
   Hourly   EDIT   Help   Map   HIDE
NEW! Add second zone forecast


Area Discussion for - Grand Rapids, MI
      HIDE   Help   
NOTE: mouseover dotted underlined text for definition
FXUS63 KGRR 241942 AFDGRR

Area Forecast Discussion National Weather Service Grand Rapids MI 342 PM EDT Mon Jun 24 2024

KEY MESSAGES

- Strong to severe storms possible late tonight/Tuesday morning

- Dry Most of Wednesday into Early Friday

- Rain Returns Friday into Saturday



DISCUSSION
Issued at 330 PM EDT Mon Jun 24 2024

- Strong to severe storms possible late tonight/Tuesday morning

Bottom line up front: Storms capable of producing damaging winds and large hail will be moving through the region tonight through Tuesday morning. A line of storms will sweep through the region early Tuesday morning between 5 AM and 10 AM.

Latest CAMS have several rounds moving through. The first should be a cluster of storms that moves through between midnight to 2 AM timeframe. That cluster has strong enough updrafts with 7 to 8 C/km lapse rates through the mid levels where damaging hail is a concern. The biggest threat tomorrow will be a long line of storms that will be extending from an upper level wave moving through the region overnight. This squall line will feature a strong pressure gradient with strong low level winds aloft accompanying this system. There is potentially over 50kts of winds between 5 to 10kt feet moving onshore after 5 AM. The question is whether or not it will be able to mix to the sfc. The strong southerly flow will keep stable air in place along with a strong inversion that could keep any convection at bay.

Given all of this, the line is not purely thermodynamically driven but the strong kinematics will assist in downdraft potential. This line will move through Tuesday morning and exit the region moving to the southeast early Tuesday afternoon.

There will be another round of storms possible later Tuesday, however given that the region will be fairly mixed it will lessen the potential for any storms.

- Dry Most of Wednesday into Early Friday

The long term forecast will be dominated by two key longwave features. The first being ridging across the southern CONUS and the second being longwave troughing across northern Canada. This places lower Michigan in a quasi-zonal longwave pattern with two main periods of active weather.

Our first active period will continue from Tuesday night as showers wind down during the morning hours Wednesday with a shortwave exiting the area. Cannot rule out an isolated rumble of thunder near JXN given low-level LIs near but confidence is low as instability ramps up as showers depart. Surface high pressure and mid-level ridging then build in for the rest of Wednesday and continue into the start of the day Friday bringing dry weather and highs in the upper 70s to low 80s.

- Rain Returns Friday into Saturday

By Friday the ridging shifts east with a 30-35 knot SW low-level jet setting up a warm air advection pattern. As expected in the day 5-6 range, some small differences in timing and placement of key surface and upper-level features exist, though the overall idea has good model consensus. Showers and thunderstorms develop potentially as soon as Friday afternoon in the warm air advection pattern, with the best chance Friday night into Saturday as a shortwave trough and associated cold front move through. High pressure returns behind the departing cold front later Saturday into Sunday returning dry weather to Mid-Michigan. Highs in the 80s Friday and Saturday fall into the 70s Sunday behind the cold front.

AVIATION /18Z TAFS THROUGH 18Z TUESDAY/
Issued at 103 PM EDT Mon Jun 24 2024

A complicated aviation forecast is expected over last 12 hours of the TAF window. High confidence in VFR through 06-08z as just a few diurnal cumulus, a few cirrus, and light winds dominate the forecast.

After 08z a line of showers and storms approaches the Lake Michigan shoreline and moves across West Michigan. However, exact placement and timing of this line is uncertain given dependence on how storms develop to our northwest. For the three sites with the best chance of seeing TSRA (MKG/AZO/GRR) have included a PROB30 group with current favored timing of thunder and prevailing SHRA for more widespread showers. For all other TAF sites confidence in thunder is to low to include in TAFs so only included SHRA. This will be updated as needed as upstream trends become more apparent. While certainty is low in potential and placement, the heart of the line could see gusts of 35-50 knots.
Potential showers and thunderstorms should exit the terminals by 15z.

Outside of thunder concerns, a strong low-level jet will bring LLWS to all terminals with SW 40-45 knot winds at 2kft for a few hours, along with southwest winds gusting to 25 knots through the end of the TAF window. There are also weak signals for MVFR stratus to develop at the I96 terminals mid-Tuesday morning, however this is likely dependent on where the heaviest precipitation falls from the line of storms tonight. Given that, will include a mention of low stratus but not include it as a ceiling with this package.

MARINE
Issued at 340 PM EDT Mon Jun 24 2024

Southwest winds will increase tonight behind a warm front and that will result in wind and waves that will become hazardous to small craft. High Confidence in several rounds of thunderstorms developing over the lake after midnight tonight with the potential for damaging winds and a chance for large hail. Along with these storms rip currents may persist after thunderstorms Tuesday morning due to possible water level fluctuations.
Chance in storms Tuesday afternoon into Tuesday evening.

GRR WATCHES/WARNINGS/ADVISORIES
MI...Beach Hazards Statement from 2 AM EDT Tuesday through Tuesday evening for MIZ037-043-050-056-064-071.
MARINE...Small Craft Advisory from 2 AM to 8 PM EDT Tuesday for LMZ844>849.




Weather Reporting Stations
   EDIT       HIDE   Help
Stations Dist Age Wind AirWater WavesinHgDewPt
SVNM4 - South Haven, MI 1 mi33 minW 4.1G4.1 72°F
45168 3 mi43 minNW 3.9G5.8 71°F 75°F1 ft29.9860°F
SJOM4 - St. Joseph, MI 24 mi63 minWNW 1.9G2.9 76°F 29.99
HLNM4 - 9087031 - Holland, MI 26 mi45 minNW 4.1G5.1 71°F 73°F29.9449°F
45026 - St. Joseph, MI 34 mi43 minNE 1.9G3.9 73°F 80°F1 ft30.0058°F
45029 35 mi33 minNNW 3.9G3.9 70°F 73°F1 ft59°F
45007 - S MICHIGAN 43NM East Southeast of Milwaukee, WI 44 mi33 minESE 3.9G5.8 68°F 66°F29.9762°F
MKGM4 - Muskegon, MI 57 mi23 minWNW 2.9G4.1 71°F 29.9362°F


Wind History for Holland, MI
(wind in knots)    EDIT      HIDE   Help
toggle option: (graph/table)



Airport Reports
    EDIT      HIDE   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisSkyWeatherAirDewPtRHinHg
KLWA SOUTH HAVEN AREA RGNL,MI 3 sm28 minWSW 0310 smClear79°F57°F48%29.98
KBEH SOUTHWEST MICHIGAN RGNL,MI 20 sm70 minW 0510 smClear81°F57°F45%29.97
Link to 1 hour of 5 minute data for KBEH
   
NEW Forecast page for KBEH (use "back" to return)

Wind History graph: BEH
(wind in knots)
toggle option: (graph/table)


Tide / Current for
   
EDIT   Weekend mode (on/off)   HIDE   Help

Tide / Current for
   EDIT      HIDE   Help

Weather Map
      HIDE   Help


GEOS Local Image of GreatLakes   
EDIT   HIDE



Grand Rapids/Muskegon, MI,




NOTICE: Some pages have affiliate links to Amazon. As an Amazon Associate, I earn from qualifying purchases. Please read website Cookie, Privacy, and Disclamers by clicking HERE. To contact me click HERE. For my YouTube page click HERE