Wednesday, July8, 2020
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Marine Weather and Tides
Powell, 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 6:09AMSunset 9:04PM Wednesday July 8, 2020 2:25 AM EDT (06:25 UTC) Moonrise 10:46PMMoonset 8:30AM Illumination 92% Phase: Waning Gibbous; Moon at 17 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:202007080830;;492277 Fzus51 Kcle 080147 Nshcle Nearshore Marine Forecast National Weather Service Cleveland Oh 947 Pm Edt Tue Jul 7 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>144-080830- 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- 947 Pm Edt Tue Jul 7 2020
Rest of tonight..South winds less than 10 knots becoming southwest. Isolated showers and Thunderstorms late this evening. Waves 1 foot or less.
Wednesday..Light and variable winds. Isolated showers and Thunderstorms in the afternoon. Waves 1 foot or less.
Wednesday night..Light and variable winds. Mostly clear. Waves 1 foot or less.
Thursday..Southeast winds less than 10 knots. Mostly Sunny. Waves 1 foot or less. Winds and waves higher in and near Thunderstorms. SEe lake erie open lakes forecast for Friday through Sunday. The water temperature off toledo is 78 degrees, off cleveland 66 degrees, and off erie 74 degrees.
LEZ144


7 Day Forecast for Marine Location Near Powell, OH
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location: 40.17, -83     debug


Area Discussion for - Wilmington, OH
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FXUS61 KILN 080552 AFDILN

AREA FORECAST DISCUSSION National Weather Service Wilmington OH 152 AM EDT Wed Jul 8 2020

SYNOPSIS. Above normal temperatures and high humidity levels will provide a chance for afternoon and evening storms through the work week. A frontal system pushing through the Ohio Valley late Friday into Saturday will return temperatures to near normal for the weekend.

NEAR TERM /THROUGH TODAY/. 08.00Z KILN sounding showed shallow stabilization from outflow from scattered storms which passed through much of the forecast area late this afternoon and evening. However, ample instability /MUCAPE > 2000 J/kg/ remained aloft. Tropospheric flow remains extremely weak and this was no better seen than with convective cores being almost completely steered/initiated by outflow boundaries. Rest of the night should be mostly quiet - although given reservoir of instability above the shallow inversion, can't rule out an isolated storm that could pop just about anywhere/anytime. But forecast will remain dry based on expected < 15% coverage. Muggy overnight lows in the upper 60s to lower 70s. Some fog is likely in the more prone valleys and low lying areas.

SHORT TERM /TONIGHT THROUGH 6 PM THURSDAY/. Wednesday may be somewhat of a carbon copy of Tuesday, with heat/humidity and afternoon/evening scattered storms. The setup for diurnally- driven convection does not appear to be all that different from Tuesday's setup/environment. Will again see activity coverage maximize late afternoon/early evening before the environment is able to stabilize somewhat. The cap appears that it will erode fairly quickly with sufficient daytime heating, so may very well see towers going up as early as noon in some spots.

Highs again will reach into the lower/mid 90s with heat index values again approaching the 100-degree mark in areas that are able to remain relatively storm-free through peak diurnal heating.

LONG TERM /THURSDAY NIGHT THROUGH TUESDAY/. Broad H5 ridge that has dominated the CONUS for the first half of the week, starts to show signs of flattening thanks to a s/w working along the Canadian-U.S. border. Thursday will be characterized by the same diurnal convection pattern that been repeating itself each each day. Highs will still push into the lower to mid 90s.

The s/w will push into the Great Lakes on Thursday night, and then across the region on Friday. A front will accompany the s/w. Convection should be more organized than previous days and have better coverage.

A H5 s/w trof will be over the eastern Great Lakes on Saturday. While highs will drop back into the 80s, a chance of showers or thunderstorms will be possible with the upper support. A reinforcing s/w swings into the trof on Sunday, bringing another shot at convection.

Upper trof lingers into Monday, so can't rule out some showers or a thunderstorm.

Finally by Tuesday drier air finally works in.

AVIATION /06Z WEDNESDAY THROUGH SUNDAY/. First concern of the TAF period is fog. Since significant rainfall occurred across central Ohio, have included MVFR vsby initially, becoming IFR toward daybreak to account for the cool, moist airmass in place there. Less rain-cooled air is in place further west, so included a briefer period at ILN with increased uncertainty. LUK, with its river valley location, will be prone to brief drops into MVFR or IFR late.

For Wednesday, looking for cumulus development by late morning, then scattered convection by mid-afternoon. Having a difficult time finding an obvious trigger for initiation of significant thunderstorm activity. In addition, with such light winds in the low and mid levels, storm motion will be slow. Putting these things together, most areas will not have thunder on-station Wednesday. Expecting VCSH, and eventually VCTS as we draw nearer, will cover the situation adequately.

OUTLOOK . Thunderstorms are possible Thursday afternoon through Saturday.

ILN WATCHES/WARNINGS/ADVISORIES. OH . None. KY . None. IN . None.

SYNOPSIS . KC NEAR TERM . Binau SHORT TERM . KC LONG TERM . Sites AVIATION . Hogue


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
OWXO1 - Old Woman Creek, OH 87 mi101 min W 1 73°F 1015 hPa68°F
HHLO1 - Huron Light, OH 88 mi86 min WSW 1 G 4.1 76°F 1014.2 hPa (+0.7)
MRHO1 - 9063079 - Marblehead, OH 96 mi56 min S 4.1 G 5.1 77°F 75°F1013.8 hPa65°F

Wind History for Marblehead, OH
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Columbus, Ohio State University Airport, OH7 mi93 minN 07.00 miFair71°F70°F96%1015.6 hPa
John Glenn Columbus International Airport, OH13 mi95 minE 48.00 miOvercast72°F70°F94%1015.3 hPa
Marysville Union County Airport, OH19 mi91 minSSW 310.00 miFair70°F68°F94%1016.3 hPa
Columbus, Bolton Field Airport, OH20 mi91 minN 010.00 miPartly Cloudy72°F69°F92%1016.9 hPa
Rickenbacker Air National Guard Base, OH24 mi91 minESE 47.00 miFair71°F70°F99%1016.3 hPa

Link to 5 minute data for KOSU

Wind History from OSU (wind in knots)
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Last 24hrW3W4E5CalmCalmCalmCalmW3W3SW8W6SW8NW11
G15
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SE15NE8E10W3S6S4CalmN3CalmSE7
1 day agoSE3CalmCalmCalmCalmCalmE4SE4E33SW6CalmCalmSW5W10SW8W3W3CalmCalmCalmCalmCalmW4
2 days agoN4N4N3N4N4N3NE3CalmCalmN3CalmCalmN7N7N8N9NE9NE5N3N4CalmCalmCalmCalm

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map
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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 Wilmington, OH (2,6,7,8)
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Ground Weather Radar Station Wilmington, OH
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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.