Friday, April16, 2021
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Marine Weather and Tides
Pultneyville, NY

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 6:21AMSunset 7:55PM Friday April 16, 2021 4:18 AM EDT (08:18 UTC) Moonrise 7:49AMMoonset 11:37PM Illumination 19% Phase: Waxing Crescent; Moon at 4 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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LOZ063 Lake Ontario Open Waters From Hamlin Beach To The Saint Lawrence River- 137 Pm Edt Thu Apr 15 2021
This afternoon..West winds 15 to 20 knots. Rain showers likely early, then a chance of rain showers late. Waves 2 to 4 feet.
Tonight..West winds 15 to 20 knots. A chance of rain showers. Waves 2 to 4 feet.
Friday..Southwest winds 15 to 20 knots becoming northwest 5 to 15 knots. Patchy fog in the morning. Rain showers likely. Waves 3 to 5 feet subsiding to 1 to 3 feet.
Friday night..Northwest winds 5 to 10 knots. A chance of rain showers in the evening. Waves 2 feet or less.
Saturday..Northwest winds 5 to 10 knots becoming southwest. Waves 1 foot or less.
Sunday..Southwest winds 5 to 10 knots becoming west. Waves 2 feet or less.
Monday..West winds 10 to 15 knots becoming southwest 15 to 20 knots. Waves 1 to 3 feet.
LOZ063 Expires:202104152100;;599864 FZUS61 KBUF 151737 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 137 PM EDT Thu Apr 15 2021 For waters beyond five nautical miles of shore on Lake Ontario 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. .SYNOPSIS...A 29.6 inch low developing near the Delmarva peninsula today will move slowly north to off the southeast New England coast by tonight and Friday while deepening to 29.4 inches. This low will then drift to the Gulf of Maine Friday night and Saturday before exiting into the Canadian Maritimes. Weak high pressure will cross the lake Sunday and Monday. LOZ063>065-152100-


7 Day Forecast for Marine Location Near Pultneyville, NY
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location: 43.86, -77.34     debug


Area Discussion for - Buffalo, NY
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FXUS61 KBUF 160548 AFDBUF

Area Forecast Discussion National Weather Service Buffalo NY 148 AM EDT Fri Apr 16 2021

SYNOPSIS. Complex low pressure system from central Great Lakes to New England will give way to primary coastal low over eastern New England on Friday. Colder air filtering into the region will transition some of the rain showers to wet snow, especially across higher terrain where minor accumulations will be likely. Mixed rain and snow showers will continue Friday, before mainly dry weather returns Saturday.

NEAR TERM /THROUGH TODAY/. A coastal low is expected to become focused near the Mid-Atlantic Coast this evening and then track northeastward into southern New England tonight and Friday. Weak cold air advection on the western side of the low will transition the rain over to wet snow, primarily for higher terrain. Most higher terrain areas will see around an inch by daybreak on Friday, but HRRR, Canadian-Regional and NAM as well as recent GFS show low-level wave developing to north of Lake Ontario this evening (out of current widespread area of rain) wrapping back southward across western NY by late evening and overnight. Temps aloft remain marginally cold (-4c to -5c at H85/5kft) for just snow, but forecast soundings point to wbzero heights lowering enough blo 1kft to result in snow for higher terrain. Nighttime timing of the wave also favorable to see some accumulating snow. Increased snow amounts for the typical higher terrain areas over western Southern Tier to Wyoming county and toward Bristol Hills. If this wave is there and stronger as some guidance shows, isolated 2 inch amounts would be possible on grassy and elevated surfaces for these regions overnight. Lower elevations over western NY will likely stay a rain/snow mix with any snow accumulation unlikely.

Now to the east of Lake Ontario . after widespread rain ends early this evening, expect cold conveyor belt moisture to the west of coastal low to wrap back westward over the region after midnight. Once that occurs, will also see minor snow accumulations over higher terrain of Tug Hill and western Dacks east of Lake Ontario. Snow amounts will be similar to those over higher terrain of western NY, an inch or two, with isolated higher amounts especially if the cold conveyor belt moisture moves back in earlier.

On Friday, cool and unsettled weather continues as upper low reaches eastern New England along and compact sfc coastal low extends a trough back to west across lower Great Lakes. At the least weak northerly cyclonic flow will support plenty of low-level moisture and some showers. Some guidance including Canadian and ECMWF show stronger wave dropping across again, so would be looking at more of a widespread light rain regime if that occurs. Didn't stray too much from continuity at this point with highs in the low to mid 40s and likely pops for the showers. With center of upper low east of here, coldest air aloft gradually modifies, so even though will be snow or mix of rain/snow to start the day for some areas, should see ptype switch to rain in the aftn even over highest terrain. Even during times with minimal precip, could see some fog over the higher terrain especially in the morning.

SHORT TERM /TONIGHT THROUGH SUNDAY NIGHT/. Rain will taper off through Friday night as the upper low moves eastward into the Gulf of Maine. Colder air filtering in on a northwesterly flow will bring temperatures down into the 30s Friday night. Temperatures on the higher terrain may cool just enough overnight that a few snowflakes could briefly mix in with any lingering showers before drying out by daybreak.

A series of weak shortwaves will cross the area downstream of a positively tilted upper level trough developing over the upper midwest. This will likely amount to little more than some extra cloud cover and a few scattered showers over the weekend, but conditions should remain mostly dry. The cool northwesterly flow will continue into Saturday as highs reach the low to mid 50s, with some upper 40s across the higher terrain. Shower chances increase some late Saturday night across Western NY as one of the aforementioned shortwaves brings in some extra moisture. Low temperatures will fall back into the mid 30s to around 40.

The weak trough will move east and approach the eastern Great Lakes on Sunday and bring some chances for a few showers, especially during the afternoon with daytime heating. Temperatures will be a few degrees warmer than Saturday in the low to mid 50s. As the axis of the trough passes over New England Sunday night, conditions should dry out. Overnight lows will again dip into the mid to upper 30s.

LONG TERM /MONDAY THROUGH THURSDAY/. Yet another weak disturbance moves across the area on Monday, possibly sparking off a few more showers, again aided by diurnal heating as temps remain cool aloft. Temperatures Monday will be near average with daytime highs mainly in the mid 50s to near 60.

A more significant feature in the form of a strong cold front is then forecast to approach the eastern Great Lakes Tuesday, then cross our region late Tuesday night into Wednesday morning, bringing a better chance for some showers. Guidance is coming in a bit slower with the cold frontal passage with the most recent run.

Another chilly airmass will drop across the area in the wake of the front on Wednesday, with the threat for a few more showers lingering into mid week as troughing remains overhead. 850H temps may get just cold enough to support a weak lake response Wednesday night, east of the lakes. Daytime highs near normal on Tuesday will drop back below average on Wednesday behind the front. Temperatures will warm some for Thursday as weak ridging and warm air advection occurs, with highs in the low to mid 50s, and in the mid 40s for the higher terrain of the Tug Hill.

AVIATION /06Z FRIDAY THROUGH TUESDAY/. Cigs will lower to IFR levels overnight as scattered rain showers become more widespread while mixing with some wet snow By 06z. most of the TAF sites should be experiencing IFR to LIFR cigs.

The IFR cigs in rain and wet snow showers will persist through the majority of Friday.

Outlook .

Friday night . MVFR/IFR with chance of rain/snow showers Saturday through Monday . Mainly VFR. Tuesday . MVFR to VFR with a chance of showers.

MARINE. Fresh to occasionally strong southwesterlies on Lake Erie will support small craft advisory conditions into Friday. Otherwise, moderate breezes and waves generally under 4 feet will be found on Lake Ontario.

A weak sfc pressure gradient will then assure only light to gentle breezes and negligible waves on the Lower Great Lakes for Friday night and Saturday.

BUF WATCHES/WARNINGS/ADVISORIES. NY . None. MARINE . Small Craft Advisory until 2 PM EDT this afternoon for LEZ040- 041.



SYNOPSIS . JLA/TMA NEAR TERM . JLA/TMA SHORT TERM . PP LONG TERM . JM/SW AVIATION . RSH/TMA MARINE . JLA/TMA


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
45135 - Prince Edward Pt 26 mi79 min W 16 G 18 38°F 37°F2 ft1004.4 hPa (-1.0)
RPRN6 - Rochester, NY 43 mi79 min WSW 8.9 G 14 38°F 1006.4 hPa (-1.1)
RCRN6 - 9052058 - Rochester, NY 44 mi49 min 38°F
OSGN6 - 9052030 - Oswego, NY 52 mi49 min W 12 G 15 40°F 1005 hPa36°F

Wind History for Oswego, NY
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Rochester, Greater Rochester International Airport, NY54 mi25 minW 108.00 miLight Rain35°F34°F96%1005.9 hPa

Link to 5 minute data for KROC

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Last 24hrNW9NW8NW6W7W5W4NW8NW9W11W11W10W12W14W15W14W15W11W7W11W10W9W11W8W10
1 day agoCalmCalmCalmS3S4W53NW7NE10NW12
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2 days agoSE6S4CalmCalmCalmCalmCalmSE5Calm4CalmNW6NE7N6NE4CalmCalmS3CalmCalmSW3SW3CalmCalm

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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