Forestville, MI Marine Weather and Tide Forecast
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Marine Weather and Tide Forecast for Forestville, MI

June 19, 2024 12:01 PM EDT (16:01 UTC) Change Location
Sunrise 5:41 AM   Sunset 9:09 PM
Moonrise 6:21 PM   Moonset 2:29 AM 
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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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LHZ463 Expires:202406192145;;294367 Fzus63 Kdtx 191345 Glflh
open lake forecast for lake huron national weather service detroit/pontiac mi 945 am edt Wed jun 19 2024
for waters beyond five nautical miles off shore on lake huron
waves are the significant wave height - the average of the highest 1/3 of the wave spectrum. Occasional wave height is the average of the highest 1/10 of the wave spectrum.

Synopsis - Southwest winds, related to a bermuda high, 30.30 inches, will continue to pump hot and humid air into the central great lakes today. Winds shift to light north/northeast over lake huron Thursday and Friday as surface front boundary sinks south in response to high pressure tracking through ontario.
lhz462>464-192145- lake huron from port austin to harbor beach beyond 5nm off shore- lake huron from harbor beach to port sanilac beyond 5nm off shore- lake huron from port sanilac to port huron beyond 5nm off shore- 945 am edt Wed jun 19 2024

Rest of today - South winds 10 to 15 knots decreasing to 5 to 10 knots late in the afternoon. Waves 1 to 3 feet.

Tonight - South winds 5 to 10 knots. A chance of showers and Thunderstorms. Waves 2 feet or less.

Thursday - North winds 5 to 10 knots. Waves 2 feet or less.

Thursday night - North winds 5 to 10 knots. Waves 2 feet or less.

Friday - North winds 5 to 10 knots becoming light and variable. Waves 2 feet or less.

Saturday - South winds 5 to 10 knots increasing to 10 to 15 knots. A chance of showers. A chance of Thunderstorms. Rain showers likely in the late evening and early morning. Waves 2 feet or less.

Sunday - Southwest winds 10 to 15 knots veering to the northwest in the late evening and early morning. Showers likely and a chance of Thunderstorms early in the morning - .then a chance of showers until early evening. Waves 3 to 5 feet.

No data

7 Day Forecast for Marine Location Near Forestville, MI
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Area Discussion for - Detroit/Pontiac, MI
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Area Forecast Discussion National Weather Service Detroit/Pontiac MI 630 AM EDT Wed Jun 19 2024


- Hot and humid conditions will persist across most of the area today as a Heat Advisory is in-place for all of Southeast Michigan.

- Chances of thunderstorms continue each day of the week, some of which may be strong to severe with locally heavy downpours and isolated damaging wind gusts.


Expect a modest uptick in the south-southwest winds late this morning/early afternoon as diurnal heating gets underway. Ample high level clouds will cause some limitation in the diurnal heating response. The potential for at least some clearing will boost daytime instability late in the day. Hi res model solutions generally suggest deep convective initiation occuring during the afternoon within a region of enhanced low level convergence in the Detroit/Toledo areas, with some indication of a northward convective response during the evening, likely aided by convective outflow.
This scenario carries a good deal of uncertainty. At this stage in the forecast, the potential for scattered or a cluster of thunderstorms developing this afternoon/evening will support a TEMPO for the metro Detroit TAFs up through PTK. Uncertainty with respect to convection increases at FNT and mbS, so no mention of convection will be included in those TAFs attm.

For DTW/D21 Convection...Chances for deep convection exist this afternoon and evening across the airspace, mainly between 19Z and 02Z. Convection will either be scattered or develop into clusters across portions of the airspace. The main limiting factor for convective development will be if the thick high cloud canopy holds in place through the day.


* Moderate in thunderstorms impacting the airspace this afternoon and evening.

Issued at 433 AM EDT Wed Jun 19 2024


Resident eastern CONUS ridge sampled by KLWX 19.00Z RAOB (Sterling, VA) revealed a H5 geopotential height center of 597 dam. The anticyclone is expected compress along the y-axis and broaden significantly along the x-axis today in response to the slight retrograde of a coastal California trough, a deepening progressive longwave over central Canada and a developing tropical cyclone over The Gulf. Early morning GOES vapor imagery highlights confluent southwesterly flow aloft driving a cloud street up into Lower Michigan, hampering nocturnal cooling. Deterministic H9 and H8 progs suggest minimal thermal advection processes today as significant level temps hover near 25C and 20C, respectively. Mixing capacity lends highs only near 90F (a 3-5F downward revision), but given the very warm starting point this morning (08Z readings in the mid 70s to near 80F) and the summer solstice being only a day away, insolation should sufficiently filter through the mid-high cloud deck offering MaxTs in the low 90s (up to 93F for Detroit heat island). As for heat indices, the slightly cooler shift with dewpoints generally AOB 70F holds peak index values AOB 100F today.
Opted to downgrade the Excessive Heat Warning to a Heat Advisory given the lower expected HIs and a shorter expected duration to the cumulative high heat days.

Other controlling factor that could further cut high temperatures (and max heat indices) is the potential for diurnal convection.
Consensus of CAMs, ensembles, and deterministic solutions suggest a more robust thunderstorm response today. Instability pool build across Southeast Michigan with HRRR SBCAPEs in the 1250-1750 J/kg range. The bulk of the activity should develop during the afternoon timeframe with a mix of pulse storms and multicell clusters. Given only 25 knots of surface to H5 shear, severe storms are unlikely, but the threat of damaging wind gusts from isolated wet microbursts exists. SPC's SWODY1 did include most of the region in a Marginal Risk.

Pattern unlock begins Thursday as a backdoor cold front washes across Lake Huron providing cooler air with northeast flow. Did shorten the Heat Advisory by a day for the northeast segment as heat indices should remain well below criteria Thursday behind the FROPA.
The main question becomes, how far south(west) will the front get before stalling out. Latest forecast foreshadows some potential adjustments for the Tri-Cities and possibly further south.
Additionally, yet another shortwave feature moving along the northern periphery of the ridge is expected to force more showers/storms Thursday afternoon with a better defined baroclinic zone. Some revisions to PoPs should be expected as the ridge adjusts over the next 24 hours.

Thermal gradient stays entrenched across Southeast Michigan Friday with northeast flow holding on over The Thumb while the stalled front retreats northward as a reinvigorated warm front. Familiar dewpoints near 70F and southwest winds creep northeast with a return to highs in the lower 90s for the roughly the southern half of the forecast area. This scenario unfolds all while the ridge axis rolls southeastward across Appalachia and into the Mid-Mississippi Valley.
By Saturday the system centers over The Southeast and could interact with another ridge over The Southwest. While the NAM, GFS, and ECMWF are in decent agreement with a more zonal upper level pattern and a draw-down in heights, another warm advection push out of The Plains could bring a more widespread return of heat/humidity. Note that a lot of spread still exists, even amongst the different ensemble groups. For reference, KDTW's mean high temperature per the 19.00Z GEFS is 87F while the EPS has a high of 94F. NBM/extended highs currently reflect values more analogous to the latter ensemble.


Southwest winds will maintain the hot and humid condition today. A high degree of surface stability with the cooler waters should keep wind speeds under 25 knots. The exception will be in and near and strong thunderstorms which develop. Timing and location will be highly uncertain, but the typical peak heating of the day into early evening hours will be favored. A cold front is now progged to move south tonight. This will allow for northerly winds over Lake Huron on Thursday and Friday as seasonably strong high pressure tracks through Ontario. Even so, airmass remains warm, which should help limit wind speeds to around 15 knots. Thus, any wave build up with the longer fetch is expected to remain below 4 feet. A stronger cold front looks to be on track for the second half of the weekend however, and wind speeds then could reach or exceed 25 knots with waves building to around 4 feet. Small craft advisories may be needed.


A moist and unstable airmass remains in place today. Isolated showers and thunderstorms are possible south of I-96/696 this morning followed by broader coverage (with a northward expansion)
this afternoon and evening. The most intense thunderstorms and repeated rounds have the potential to produce rainfall amounts in excess of an inch over a short period of time which could lead to possible flooding for urban and low lying areas. Uncertainty in specifics of location and exact timing for any flooding precludes the issuance of an flood watches. Additional storms are possible Thursday with low confidence in flood potential.

MI...Heat Advisory until 10 PM EDT Thursday for MIZ047-053-060-061- 068>070-075-076-082-083.

Heat Advisory until 10 PM EDT this evening for MIZ048-049-054-055- 062-063.

Lake Huron...None.
Lake St Clair...None.
Michigan waters of Lake Erie...None.

Weather Reporting Stations
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Stations Dist Age Wind AirWater WavesinHgDewPt
45149 - Southern Lake Huron 22 mi61 minS 9.7 68°F 62°F1 ft30.21
PSCM4 47 mi61 min8.9G13
HRBM4 - 9075014 - Harbor Beach, MI 48 mi43 minWSW 9.9G15 83°F 61°F30.1669°F
FTGM4 - 9014098 - Fort Gratiot, MI 62 mi43 minSW 6G13 84°F 30.2069°F
MBRM4 - 9014090 - Mouth of the Black River, MI 64 mi43 min 83°F 30.20

Wind History for Harbor Beach, MI
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Airport Reports
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AirportDistAgeWind ktVisSkyWeatherAirDewPtRHinHg
KP0 sm66 minWSW 07G21--84°F66°F55%30.17
Link to 1 hour of 5 minute data for KP58
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Wind History graph: P58
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Tide / Current for
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GEOS Local Image of GreatLakes   

Detroit, MI,

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