Monday, April6, 2020
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Marine Weather and Tides
Greece, NY

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 6:40AMSunset 7:44PM Monday April 6, 2020 12:48 AM EDT (04:48 UTC) Moonrise 5:02PMMoonset 5:20AM Illumination 96% Phase: Waxing Gibbous; Moon at 13 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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LOZ043 Hamlin Beach To Mexico Bay Along Lake Ontario Including Irondequoit Bay- 457 Pm Edt Sun Apr 5 2020
Tonight..West winds 10 to 15 knots. Partly cloudy. Waves 2 to 4 feet.
Monday..West winds 5 to 10 knots. Mostly Sunny. Waves 1 to 3 feet subsiding to 1 foot or less.
Monday night..Southwest winds 10 knots or less. Mostly cloudy. Waves 1 foot or less.
Tuesday..Light and variable winds becoming northeast 5 to 10 knots. A chance of rain showers in the afternoon. Waves 1 foot or less.
Tuesday night..Northeast winds 5 to 10 knots. A chance of showers in the evening, then showers likely overnight. Waves 1 to 3 feet.
Wednesday..Northeast winds 5 to 10 knots becoming southwest. Showers likely. Waves 2 feet or less.
Thursday..West winds 15 to 20 knots. Rain showers likely. Waves building to 5 to 8 feet. Waves occasionally around 10 feet.
Friday..West winds 15 to 20 knots. A chance of rain and snow showers. Waves 5 to 9 feet. Waves occasionally around 11 feet. The water temperature off rochester is 42 degrees.
LOZ043 Expires:202004060315;;626387 FZUS51 KBUF 052057 NSHBUF Nearshore Marine Forecast National Weather Service Buffalo NY 457 PM EDT Sun Apr 5 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. LOZ043-044-060315-


7 Day Forecast for Marine Location Near Greece, NY
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location: 43.29, -77.68     debug


Area Discussion for - Buffalo, NY
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FXUS61 KBUF 060243 AFDBUF

Area Forecast Discussion National Weather Service Buffalo NY 1043 PM EDT Sun Apr 5 2020

SYNOPSIS. High pressure will move across the area tonight and Monday bringing a period of fair weather. Unsettled weather returns with periods of showers mid to late week with temperatures trending lower.

NEAR TERM /THROUGH MONDAY NIGHT/. While there will be some lower strato-cu across parts of the Southern Tier and Eastern Lake Ontario region overnight . relatively dry air overspreading the region ahead of high pressure should support mainly moonlit skies.

The sfc high will then allow for a nice day across the forecast area on Monday with plenty of sunshine thorugh at least mid afternoon. Weak warm air advection along with the sunshine will get temperatures well into the 50s for many spots, although it will be several degrees cooler near the lakes with a prevailing onshore winds.

High pressure only slowly relinquishes Monday night keeping most of the area dry. A warm front will advance slowly eastward across the upper Great Lakes. The leading edge of rain showers ahead of the warm front may reach Chautauqua County around daybreak.

SHORT TERM /TUESDAY THROUGH THURSDAY/. Tuesday the surface high will drift east. Meanwhile the upstream warm front will move only very slowly east, with large scale forcing supporting it weakening with time. This will likely keep rain chances confined to the Southern Tier for much of the day, then chances begin to advance northeast across the remainder of the area late in the afternoon. Temperatures will run a little above average, with highs in the mid to upper 50s in most areas, with lower 60s possible in the Genesee Valley.

The combination of a mid level shortwave, a upper level jet streak, and associated feature at the surface will move east-southeast down a baroclinic zone causing an increase in forcing and moisture. As such, chances for widespread rain showers will increase as the system passes through Tuesday night and Wednesday morning. There should be a lull in rain shower activity late Wednesday afternoon and night as the wave continues to move east into the Atlantic.

LONG TERM /THURSDAY NIGHT THROUGH SUNDAY/. Long term guidances continue to support a change in the upper level pattern, which are starting to be seen in the current water vapor imagery, where it depicts the initiation of amplification of the ridge in the Northern Pacific. The amplification of the ridge in the Pacific will allow for a trough to dig deep across the lower 48 states beginning late Wednesday and Thursday which will allow for cold air to filter in across central and eastern CONUS.

Bringing this down to our local level, the digging trough will support low pressure to move through Canada on Thursday. As the low moves east on Thursday, it will drag its cold front across the region. In the wake of the rain showers ahead of the front, much colder air will fill in to the region and linger around through Saturday. Frequent showers will be across the region late Friday through Sunday as a cyclonic wind regime and wrap around moisture on the backside of the low as well as a couple of passages of mid level shortwaves. As hinted at previously, it will be cold enough to cause some of these showers to fall as snow and quite possibly be lake enhances as the temperatures in the low levels support this. In the higher elevations it is quite possible for some snow accumulations during this showery period. Shower activity will decrease some on Saturday and Sunday as the deeper moisture is pulled away from the region.

AVIATION /03Z MONDAY THROUGH FRIDAY/. VFR conditions can be expected across the vast majority of the region overnight . with only spotty MVFR strato-cu cigs found across the Southern Tier.

High pressure moving over the region on Monday will maintain fine VFR conditions and generally light winds.

Outlook .

Monday night . VFR. Tuesday and Wednesday . Mainly VFR with a chance of showers. Thursday . VFR/MVFR with showers likely. Friday . VFR/MVFR with scattered rain/snow showers

MARINE. Relatively fresh northwesterlies in the wake of a cold front will keep some choppy conditions in place along the south shore of Lake Ontario late this evening . but winds and waves will remain below small craft advisory criteria Otherwise. winds will continue to diminish over the region through the night In fact. winds will be light and variable on Lake Erie.

General high pressure over the region will then maintain generally light winds and negligible waves through Tuesday.

BUF WATCHES/WARNINGS/ADVISORIES. NY . None. MARINE . None.



SYNOPSIS . JLA/TMA NEAR TERM . RSH/TMA SHORT TERM . EAJ/TMA LONG TERM . EAJ AVIATION . RSH MARINE . RSH


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RCRN6 - 9052058 - Rochester, NY 3 mi55 min 40°F 1019.9 hPa
RPRN6 - Rochester, NY 5 mi49 min W 7 G 8.9 42°F
OLCN6 - Olcott Harbor, NY 55 mi49 min NW 11 G 13 42°F 1021.7 hPa (+0.7)

Wind History for Oswego, NY
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Rochester, Greater Rochester International Airport, NY12 mi55 minW 410.00 miPartly Cloudy39°F32°F76%1020.7 hPa

Link to 5 minute data for KROC

Wind History from ROC (wind in knots)
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Last 24hrS4CalmSW3SW4CalmW3SW3SW3SW4W7NW10NW7NW8NW8NW9NW8NW11NW9N8N7NW4W5W5W4
1 day agoN5NW3CalmCalmN3CalmCalmNW3NW3NW3W5NW6NW4N3CalmCalmCalmNE6NE4E4CalmCalmCalmSW3
2 days agoNW8N7N7N10N10NW9NW10NW10NW9NW9NW10N8NW7NW8NW6N10NW9NW10NW7NW8NW7NW5N5N5

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 Northeast    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 Buffalo, NY (0,6,7,8)
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Ground Weather Radar Station Buffalo, NY
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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.