Wednesday, April21, 2021
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Marine Weather and Tides
Rocky River, OH

Version 3.4
NOTICE
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:36AMSunset 8:15PM Wednesday April 21, 2021 10:12 PM EDT (02:12 UTC) Moonrise 12:47PMMoonset 2:58AM Illumination 76% Phase: Waxing Gibbous; Moon at 10 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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LEZ146 Expires:202104211415;;881912 Fzus51 Kcle 210739 Nshcle Nearshore Marine Forecast National Weather Service Cleveland Oh 339 Am Edt Wed Apr 21 2021 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. Lez144>146-211415- The Islands To Vermilion Oh-vermilion To Avon Point Oh- Avon Point To Willowick Oh- 339 Am Edt Wed Apr 21 2021
.small craft advisory in effect through this evening...
Today..North winds 15 to 20 knots becoming northwest. Rain and snow likely early, then a slight chance of rain and snow showers from late morning on. Waves 3 to 5 feet. Waves occasionally around 6 feet.
Tonight..Northwest winds 15 to 20 knots diminishing to 10 to 15 knots. A chance of rain and snow showers in the evening, then a slight chance of rain and snow showers overnight. Waves 2 to 4 feet subsiding to 1 to 3 feet.
Thursday..West winds 10 to 15 knots increasing to 15 to 20 knots. Mostly Sunny. Waves 1 to 3 feet building to 2 to 4 feet.
Thursday night..West winds 15 to 20 knots becoming southwest 10 to 15 knots. Mostly clear. Waves 2 to 4 feet subsiding to 1 to 3 feet. SEe lake erie open lakes forecast for Friday through Sunday. The water temperature off toledo is 52 degrees, off cleveland 47 degrees, and off erie 47 degrees.
LEZ146


7 Day Forecast for Marine Location Near Rocky River, OH
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location: 41.48, -81.85     debug


Area Discussion for - Cleveland, OH
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FXUS61 KCLE 212328 AFDCLE

Area Forecast Discussion National Weather Service Cleveland OH 728 PM EDT Wed Apr 21 2021

SYNOPSIS. A trough will linger across the region through tonight. High pressure will build from the southwest on Thursday and move through the Ohio Valley through Friday. Low pressure will develop over the southern United States on Saturday and move northeast into the region for the weekend.

NEAR TERM /THROUGH THURSDAY NIGHT/. Greater coverage of snow showers than previously thought is occurring across portions of northeast Ohio, so increased PoPs as a result. Precipitation has exclusively fallen as snow or graupel, so removed any mention of rain/snow mix and made precipitation all snow.

Previous Discussion . Snow showers over Indiana this afternoon will attempt to push east into the forecast area. This area of snow is being supported by the mid-level trough axis and associated vorticity maximum moving through the region. Snow also has some intensity, as it taps into some low level instability generated from breaks in the clouds ahead of this region. Will have chance PoPs for this afternoon and evening, timed with this feature. Snow will then transition to being focused to the lee of Lake Erie with moisture and instability from the lake. However, a marginally cold low level air mass and some directional shear will prohibit anything organized in terms of lake effect but some light snow is possible tonight and have maintained some low PoPs. Temperatures will be cold tonight with the anomalously cold air mass and breaks in the clouds to allow for temperatures to plummet into the 20s. A Freeze Warning has been issued for our counties where the growing season has begun. High pressure will build in from the south on Thursday and drier will enter, ending any precipitation across the region. Some clouds may persist to the lee of the lake. Temperatures will recover with some slight warm air advection and the snow across the region having melted with a mix of 40s to lower 50s for highs. Temperatures will drop into the 30s on Thursday night and at least widespread frost is possible as the atmosphere decouples with high pressure.

SHORT TERM /FRIDAY THROUGH SATURDAY NIGHT/. High pressure lingers across the area with a high pressure ridge extending across northern Ohio and Lake Erie through Friday night. This will result in mostly sunny/clear skies with near normal temperatures.

Two upper-level troughs are progged to impact our region Saturday onward: one that moves from the lower Great Plains to the mid- Atlantic, and another one that moves across the Great Lakes region. These two troughs will result in a large area of surface low pressure extending from the mid-Mississippi Valley to upper Midwest moving eastward across the region Saturday through early Sunday. Two defined low pressure circulations will likely be present but the more dominant of the two for our region will move eastward across the Ohio Valley Saturday afternoon through early Saturday night. Isentropic lift associated with the TROWAL will provide the lift and moisture necessary for widespread rain north of the low pressure Saturday through early Saturday night.

LONG TERM /SUNDAY THROUGH WEDNESDAY/. An elongated area of surface high pressure will work its way east across the region Sunday through Monday, with the center of the high pressure ridge centered over the region by Monday morning. This will usher in below normal temperatures for Sunday and Sunday morning, with a round of frost/freeze expected Sunday night as temperatures dip to near or below freezing. As high pressure shifts to the east this Monday/Tuesday, a big pattern flip is expected with well above normal temperatures expected by Tuesday/Wednesday. Most areas have forecast max temperatures in the upper 70s to low 80s for each of these days.

AVIATION /00Z Thursday THROUGH Monday/. Scattered snow showers remain across the region, with varying visibilities being observed within snow showers. Didn't carry any prevailing lower ceilings or visibilities but if one of these scattered showers does impact a TAF site, MVFR ceiling/visibility is expected. The most intense snow shower could bring visibility down to as low as 1 SM. High pressure slowly builds in tonight, which should cause these showers to slowly diminish from west to east tonight. Once showers diminish, VFR conditions are expected to remain the predominant condition through to the end of the TAF period.

During the afternoon hours on Friday, cumulus clouds between 3,000 and 5,000 ft are expected to develop, along with west winds of 12-15 knots with gusts to 20 knots.

Outlook . Non-VFR expected with widespread rain Saturday afternoon through Saturday night.

MARINE. Elevated northwest winds of about 15-20 knots will remain across eastern Lake Erie through this evening, for which we have a Small Craft Advisory still in effect. There will be a bit of a lull in Lake Erie conditions before it increases back to 15-20 knots for all of Lake Erie east of the islands through Thursday evening. Another round of Small Craft Advisories will probably be needed for this. This shifts to out of the southwest on Friday as high pressure moves eastward south of Lake Erie. Winds become light and more variable Friday night through early Sunday as low pressure moves across the region.

CLE WATCHES/WARNINGS/ADVISORIES. OH . Freeze Warning until 10 AM EDT Thursday for OHZ003-006-017-027- 036-037-047. PA . None. MARINE . Small Craft Advisory until 11 PM EDT this evening for LEZ147>149.

SYNOPSIS . Sefcovic NEAR TERM . Saunders/Sefcovic SHORT TERM . Saunders LONG TERM . Saunders AVIATION . Saunders MARINE . Saunders


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CNDO1 - 9063063 - Cleveland, OH 12 mi54 min Calm G 1.9 34°F 51°F1016.5 hPa23°F
LORO1 18 mi42 min W 20 G 24 40°F
FAIO1 - 9063053 - Fairport, OH 36 mi54 min S 7 G 8.9 33°F 52°F1015.2 hPa27°F
HHLO1 - Huron Light, OH 37 mi72 min W 11 G 13 37°F 1014.9 hPa (+0.0)
MRHO1 - 9063079 - Marblehead, OH 47 mi54 min WSW 5.1 G 8 36°F 50°F1015.5 hPa24°F

Wind History for Cleveland, OH
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Cleveland Hopkins International Airport, OH4 mi81 minS 57.00 miLight Snow32°F28°F85%1018.3 hPa
Cleveland, Burke Lakefront Airport, OH9 mi79 minS 310.00 miPartly Cloudy36°F24°F62%1016.8 hPa
Lorain / Elyria, Lorain County Regional Airport, OH20 mi79 minWSW 510.00 miOvercast34°F29°F82%1017.2 hPa
Cleveland / Cuyahoga, OH21 mi87 minSSW 320.00 miPartly Cloudy30°F21°F69%1016.3 hPa

Link to 5 minute data for KCLE

Wind History from CLE (wind in knots)
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Last 24hrN11N10N10N13N12N10N10N9N11N10N7N12N13NW12NW14W14
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1 day agoNW8W10W14NW11
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W8W7W5W6SW5W8W7W73NW10N8N11N10N9N13N12N11N11N13
2 days agoS6S4S5S5S3S3S4S5S4SW5SW8SW7W11SW13SW14
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Tide / Current Tables for
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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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