Sunday, July5, 2020
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Marine Weather and Tides
Lewiston, 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 5:42AMSunset 9:01PM Sunday July 5, 2020 4:00 PM EDT (20:00 UTC) Moonrise 8:47PMMoonset 4:55AM Illumination 100% Phase: Full Moon; Moon at 15 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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LOZ030 Lower Niagara River- 624 Am Edt Sun Jul 5 2020
Today..Light and variable winds becoming west 5 to 10 knots. Sunny.
Tonight..Southwest winds less than 10 knots. Mainly clear.
Monday..East winds 10 knots or less becoming northeast 10 to 15 knots. Sunny.
Monday night..East winds 5 to 10 knots becoming light and variable. Mainly clear.
Tuesday..Southwest winds 10 knots or less. Mainly clear, then becoming partly cloudy.
Wednesday..Southwest winds 10 knots or less. Partly cloudy.
Thursday..Southwest winds 10 knots or less becoming south. Partly cloudy.
LOZ030 Expires:202007051515;;349898 FZUS51 KBUF 051024 NSHBUF Nearshore Marine Forecast National Weather Service Buffalo NY 624 AM EDT Sun Jul 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. LOZ030-051515-


7 Day Forecast for Marine Location Near Lewiston, NY
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location: 43.19, -79.29     debug


Area Discussion for - Buffalo, NY
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FXUS61 KBUF 051807 AFDBUF

Area Forecast Discussion National Weather Service Buffalo NY 207 PM EDT Sun Jul 5 2020

SYNOPSIS. Very warm weather will continue through Monday, then heat and humidity will build even further during next week. General high pressure will keep it dry most of the time, however a few showers and thunderstorms are possible during the afternoon and evening hours.

NEAR TERM /THROUGH MONDAY NIGHT/. The rest of this afternoon will be hot and mainly dry with Buffalo making another run at 90 degrees. Humidity will remain low with dew points in the upper 50s keeping heat index values manageable. A weak mid level shortwave and associated surface cold front will reach the North Country later this afternoon and evening, supporting scattered showers and thunderstorms across portions of Jefferson and Lewis counties.

Tonight any scattered showers and storms across the North Country will end with the loss of diurnal instability. Patchy river valley fog is possible across the Southern Tier.

A subtle shortwave embedded in a general northwesterly flow aloft will move across the area Monday afternoon. This along with daytime instability will support showers and thunderstorms across the western Southern Tier and upper Genesee Valley 2-8 p.m. Weak flow aloft will result in very slow moving storms which will limit areal coverage and precipitation chances. While the rain is needed, slow moving storms could potentially pose a flood risk if a storm stalls over one location too long. This risk is quite low considering precipitable water values will be 1.25 -1.50. No wind shear to speak of, but a few strong 'pulse' storms cannot completely be ruled out.

For most locations Monday will just be dry and hot, with highs in the upper 80s to lower 90s. Humidity will still be manageable, which should keep apparent temperatures below heat advisory criteria.

Any showers and thunderstorms will taper off Monday evening, with weak high pressure providing dry weather. Fog may develop again across the Western Southern Tier valleys, especially at locations which get rainfall during the day.

SHORT TERM /TUESDAY THROUGH WEDNESDAY NIGHT/. Warm conditions continue into the middle portion of the week with an upper level ridge overhead. Humidity will be on the rise with dewpoints climbing to the mid to upper 60s on Tuesday. This will make it feel more uncomfortable as temperatures climb into the low 90s across western and north central NY. Heat indices will approach 95 degrees across the Lake Plains. Lake breezes will keep lake shores a few degrees cooler. A heat advisory may be needed Tuesday. Surface high pressure will keep subsidence in place for most of the day. Once the inversion is overcome, isolated to scattered showers and storms are possible across the higher terrain of western and north central NY Tuesday afternoon. Any convection will diminish towards sunset and dry conditions are expected Tuesday night with lows in the mid to upper 60s.

A weak cold front will approach the eastern Great Lakes Wednesday. The region will experience another hot and humid day with highs in the low 90s and heat indices near 95. Steepening lapse rates and increasing moisture will allow more coverage of diurnally-driven showers and storms Wednesday late morning-afternoon. This may limit some areas from reaching the low 90s. Heat advisories will likely continue into Wednesday. Activity will diminish Wednesday evening with lows in the mid to upper 60s and a few places across the Lake Plains staying in the 70s.

LONG TERM /THURSDAY THROUGH SATURDAY/. . Extended period of High Heat continues for Much of This Period .

A broad upper level ridge of high pressure will remain across the eastern two-thirds of the United States throughout much of the period. Notably with this prominent upper level feature, heat and humidity will be the main players throughout the extended portion of the forecast.

Highs through the remainder of the work week will climb into the low to mid 90s in the lower elevations, while the higher elevations will see high temperatures in the upper 80s. Model guidance has been in agreement that the region may see 850mb temperatures of 19-21 degrees C which may lead to a few mid to upper 90F readings in the typically warmer locations of our forecast area (i.e. Dansville) Thursday and Friday. While the temperatures will soar, the humidity will follow suit. Dewpoint temperatures will continue to climb throughout the week, which will allow for the places in the lower terrain to see heat indices range from mid 90s to the possible 100.

The majority of this period will be rain free with a few scattered showers and thunderstorms each afternoon and evening forming inland along lake breeze boundaries.

A cold front is forecast to cross the region on Saturday which will provide showers and somewhat cooler, albeit still above normal, temperatures and less humid conditions for the weekend. A sharpening shortwave trough and secondary cold front may lead to showers and storms on Sunday.

AVIATION /18Z SUNDAY THROUGH FRIDAY/. Weak surface high pressure will provide mainly dry weather for the 18Z TAF cycle. The exception is the North Country where a shortwave and weak front will produce a few scattered showers and thunderstorms which may impact KART. Otherwise, there may be some river valley fog across the Western Southern Tier, but probably will not reach KJHW.

A few showers and thunderstorms possible inland from the lakes Monday afternoon, but these are unlikely to impact any of our TAF locations.

Outlook .

Monday night through Thursday . Mainly VFR. Widely scattered showers and storms each afternoon mainly inland from the lakes with local/brief flight restrictions. Late night/early morning Southern Tier Valley fog with local IFR.

Friday . VFR/MVFR. A chance of showers and thunderstorms.

MARINE. A weak pressure gradient will maintain light winds and negligible waves through tonight. A period of somewhat stronger ENE winds will develop Monday on Lake Ontario, bringing choppy conditions to the west half of the lake. Winds are expected to remain lighter on Lake Erie Monday.

Relatively light winds will then return to both lakes Tuesday through Friday with negligible wave action.

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



SYNOPSIS . Apffel NEAR TERM . Apffel SHORT TERM . HSK LONG TERM . HSK/Levan AVIATION . Apffel MARINE . Apffel/Hitchcock


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
45139 - West Lake Ontario - Grimsby 13 mi121 min ENE 3.9 G 5.8 80°F 79°F1014.5 hPa (-1.2)
NIAN6 - 9063012 - Niagara Intake, NY 17 mi43 min 85°F 1015.6 hPa
BUFN6 - 9063020 - Buffalo, NY 30 mi43 min SSW 6 G 7 76°F 78°F1016.3 hPa52°F
45142 - Port Colborne 31 mi61 min W 5.8 G 5.8 76°F 76°F1015.4 hPa (-0.8)
OLCN6 - Olcott Harbor, NY 32 mi61 min W 2.9 G 4.1 78°F 1015.6 hPa (-0.7)
PSTN6 - 9063028 - Sturgeon Point, NY 37 mi43 min 77°F 1015.9 hPa
45159 - NW Lake Ontario Ajax 43 mi61 min SSW 5.8 G 7.8 71°F 65°F1014.3 hPa (-1.0)
DBLN6 - Dunkirk, NY 48 mi61 min W 2.9 G 5.1 77°F 1016 hPa (-0.6)

Wind History for Buffalo, NY
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Niagara Falls, Niagara Falls International Airport, NY19 mi68 minNNW 510.00 miFair88°F57°F36%1014.4 hPa

Link to 5 minute data for KIAG

Wind History from IAG (wind in knots)
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Last 24hrN7NW64N5N3CalmNE3CalmCalmCalmCalmCalmCalmCalmCalmCalmS4S5SW4SW5W8W8SW12NW5
1 day agoNW9NW6NW7NW7NW5NW9N5CalmCalmNW6NW5W4NW6NW8N6N9N8N7N6N6CalmN86NE9
2 days agoSW11SW12SW12SW10SW8NE4S4SW5S3CalmNW8W5S6SW5SW4SW5W4NW9NW4NW8NW8NW10N8N8

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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Buffalo, NY (16,3,4,5)
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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.