Saturday, July4, 2020
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Marine Weather and Tides
Flat Rock, OH

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 6:01AMSunset 9:08PM Saturday July 4, 2020 9:51 PM EDT (01:51 UTC) Moonrise 8:01PMMoonset 4:20AM Illumination 100% Phase: Full Moon; Moon at 14 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
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LEZ144 Expires:202007042015;;303521 Fzus51 Kcle 041355 Nshcle Nearshore Marine Forecast National Weather Service Cleveland Oh 955 Am Edt Sat Jul 4 2020 For Waters Within Five Nautical Miles Of Shore 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. Lez142>144-042015- Lake Erie Nearshore Waters From Maumee Bay To Reno Beach Oh- Lake Erie Nearshore Waters From Reno Beach To The Islands Oh- Lake Erie Nearshore Waters From The Islands To Vermilion Oh- 955 Am Edt Sat Jul 4 2020
This afternoon..North winds 5 to 10 knots becoming northeast. Mostly Sunny. Waves 1 foot or less.
Tonight..Northeast winds 10 knots or less becoming east. Mostly clear. Waves 1 foot or less.
Sunday..East winds 10 knots or less. Sunny. Waves 1 foot or less.
Sunday night..East winds 10 knots or less becoming southeast. Mostly clear. Waves 1 foot or less. SEe lake erie open lakes forecast for Monday through Wednesday. The water temperature off toledo is 75 degrees, off cleveland 66 degrees, and off erie 75 degrees.
LEZ144


7 Day Forecast for Marine Location Near Flat Rock, OH
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location: 41.2, -82.89     debug


Area Discussion for - Cleveland, OH
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FXUS61 KCLE 050117 AFDCLE

Area Forecast Discussion National Weather Service Cleveland OH 917 PM EDT Sat Jul 4 2020

SYNOPSIS. High pressure will build over Lake Erie into Sunday before drifting east on Monday. Weak ridging will then persist over the region through midweek. A weakening cold front may move into the area Tuesday night into Wednesday.

NEAR TERM /THROUGH SUNDAY NIGHT/. 915 pm update . No changes were needed to the ongoing forecast this evening. The weather is just about perfect for anything outdoors for this holiday weekend.

Previous discussion . Outflow boundary and weak middle level instability over Know county may keep an isolated shower/thunderstorms going through 6-7 PM. Otherwise expect the cumulus to dissipate with the setting sun. However a few high clouds will persist through the overnight. Slightly drier conditions overnight will allow a few inland locations to dip to around 60. The cities will likely remain in the mid to upper 60's.

Slightly drier air lingers into Sunday which should provide a dry day for all locations. It will be warmer with highs in the upper 80's to mid 90's, cooler near the immediate lakeshore. Dry conditions continue into Sunday night with lows ranging from the mid 60's to lower 70's.

SHORT TERM /MONDAY THROUGH TUESDAY NIGHT/. More of the same dry and hot weather will continue over the region on Monday, as a strong upper ridge will remain over the eastern CONUS and surface high pressure will extend over the eastern Great Lakes region. The trend of warming temperatures will continue into Monday as 850 mb temperatures as high as 22 degrees Celsius will enter overhead and the atmosphere should mix enough to keep dew points down into the 60s and bring that warmer air down to the surface. Temperatures are expected as high as the mid 90s, but heat indices will only push a couple of degrees warmer for Monday.

The upper ridge will be flattened by a shortwave trough on Tuesday, which will support a weak surface trough that will move through the Great Lakes region on Wednesday. Some better low level moisture will enter ahead of this feature on Tuesday and support some scattered, diurnally-driven shower and thunderstorm activity. Higher dew points, in conjunction with well above normal high temperatures, will allow for heat indices to creep closer to the 100 degree mark, although upper 90s seems like the max for Tuesday at this point. Low temperatures on Monday and Tuesday nights will remain warm in the lower 70s for most, giving little reprieve from the heat.

LONG TERM /WEDNESDAY THROUGH SATURDAY/. Wednesday appears to be the most unsettled day of the entire forecast package. The upper ridge will remain slightly less amplified for the middle of the week and a surface trough will pass through the region. More scattered shower and thunderstorm activity is expected on Wednesday with the passage of this feature. Precipitation coverage on Wednesday will be greater than Tuesday, but not everyone will necessarily see rain. The trough moves through by Thursday and the upper ridge rebuilds over the Great Lakes region. With a more moist airmass in place over the region and continued above normal temperatures well into the 90s, could see the chance for heat indices to reach or exceed 100 degrees, especially Northwest Ohio. There may be a need for heat advisories late in the week, if this comes to fruition. A stronger shortwave trough will enter the Great Lakes region for Friday and Saturday and could allow for rain chances for next weekend.

AVIATION /00Z Sunday THROUGH Thursday/. VFR conditions will prevail for this TAF update and during the next 24 to 30 hours. There are no aviation concerns at this time. High pressure and mostly clear skies will continue. Winds will be light and variable tonight followed by a light east or northeast winds around 5 knots on Sunday.

Outlook . Non-VFR in isolated thunderstorms on Tuesday and scattered thunderstorms on Wednesday.

MARINE. High pressure over the eastern Great Lakes region will remain through Monday, allowing for light northeast to east winds over the basin and a mostly calm lake. A surface trough will enter the Great Lakes region from the west on Tuesday and promote southerly, offshore winds for the middle of the week. Some stronger winds to 10 to 15 knots are possible but the offshore direction will allow for minimal marine impacts. The trough passes through on Wednesday and high pressure returns to region on Thursday, keeping the marine weather quiet. Some isolated/scattered showers and thunderstorms are possible on Tuesday and Wednesday.

CLE WATCHES/WARNINGS/ADVISORIES. OH . None. PA . None. MARINE . None.

SYNOPSIS . MM NEAR TERM . Griffin/MM SHORT TERM . Sefcovic LONG TERM . Sefcovic AVIATION . Griffin MARINE . Sefcovic


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
HHLO1 - Huron Light, OH 23 mi52 min ENE 8 G 8.9 79°F 1013.9 hPa (-1.3)
OWXO1 - Old Woman Creek, OH 24 mi67 min Calm 75°F 1015 hPa66°F
CMPO1 25 mi82 min E 8 G 8.9 82°F
MRHO1 - 9063079 - Marblehead, OH 25 mi58 min ENE 4.1 G 5.1 78°F 78°F1014.7 hPa64°F
SBIO1 - South Bass Island, OH 30 mi52 min E 4.1 G 7 78°F 1014.5 hPa (-1.1)
TWCO1 40 mi42 min E 8.9 G 9.9 78°F
LORO1 42 mi82 min NE 7 G 8 79°F
THRO1 - 9063085 - Toledo, OH 46 mi58 min E 5.1 G 7 82°F 1015 hPa62°F

Wind History for Marblehead, OH
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Mansfield - Mansfield Lahm Regional Airport, OH32 mi60 minN 610.00 miFair78°F57°F50%1014.7 hPa

Link to 5 minute data for KMFD

Wind History from MFD (wind in knots)
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Last 24hrN5CalmCalmCalmCalmCalmCalmCalmCalmN3CalmNE34N8N9
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5NW5N6N5N8N9N10N7N6
1 day agoCalmCalmCalmCalmS3CalmCalmCalmS4CalmCalmW5W64N5N8CalmNW5W5N8NW7N8N5N6
2 days agoN4N6N5NE4N4NE3NE4NE5NE3NE3NW3N3N5N6NE5N6N433N7N5N4N7N4

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map
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wmap_A
GEOS Local Image of    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Cleveland, OH (21,6,7,8)
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Ground Weather Radar Station Cleveland, OH
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Disclaimer:
The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerous of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.