Sunday, August9, 2020
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Marine Weather and Tides
Irondequoit, 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 6:08AMSunset 8:22PM Sunday August 9, 2020 4:23 AM EDT (08:23 UTC) Moonrise 10:26PMMoonset 10:57AM Illumination 72% Phase: Waning Gibbous; Moon at 20 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- 142 Am Edt Sun Aug 9 2020
Overnight..Southwest winds 5 to 10 knots. Mainly clear. Waves 1 foot or less.
Sunday..Southwest winds 5 to 15 knots. A chance of showers in the afternoon. Waves 1 foot or less.
Sunday night..Southwest winds 5 to 10 knots. A chance of showers. Waves 1 foot or less.
Monday..Southwest winds 10 knots or less becoming west. A chance of showers in the morning. Waves 1 foot or less.
Monday night..Southwest winds 5 to 10 knots becoming south. Mainly clear in the evening, then becoming partly cloudy. Waves 1 foot or less.
Tuesday..Southwest winds 10 knots or less becoming west. Showers likely with a chance of Thunderstorms. Waves 1 foot or less.
Wednesday..Northwest winds less than 10 knots becoming northeast. Partly cloudy. Waves 1 foot or less.
Thursday..Northeast winds 10 knots or less becoming east. Partly cloudy. Waves 1 foot or less. Winds and waves higher in and near Thunderstorms. The water temperature off rochester is 71 degrees.
LOZ043 Expires:202008090915;;158555 FZUS51 KBUF 090542 NSHBUF Nearshore Marine Forecast National Weather Service Buffalo NY 142 AM EDT Sun Aug 9 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. LOZ043-044-090915-


7 Day Forecast for Marine Location Near Irondequoit, NY
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location: 43.27, -77.6     debug


Area Discussion for - Buffalo, NY
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FXUS61 KBUF 090637 AFDBUF

Area Forecast Discussion National Weather Service Buffalo NY 237 AM EDT Sun Aug 9 2020

SYNOPSIS. An area of high pressure over the Ohio Valley will keep mostly dry conditions through Monday, although a few weak upper level disturbances crossing the region may bring a few showers from time to time. A weak cold front will cross the region on Tuesday, bringing the next chance for more widespread showers and thunderstorms. Otherwise, temperatures will remain above normal and humidity will stick around through the upcoming week.

NEAR TERM /THROUGH TODAY/. Weak high pressure centered over the Ohio Valley will keep conditions dry through the remainder of the overnight. This will leave mainly clear to partly cloudy skies south of Lake Ontario. However some mid and upper level cloud cover will be found across the North Country out ahead of shortwave crossing Georgian Bay. Expect the typical valley fog to impact the Southern Tier again late tonight/early this morning.

Today, an upper level trough will move down the Ottawa Valley, reaching northern NY in the afternoon. This feature will bring some increase in mid/high clouds at times across the region. The bulk of the scattered showers and storms will remain north of Lakes Erie and Ontario across southern Ontario, although some of this activity may make it south to Lake Ontario and the Saint Lawrence River into the eastern Lake Ontario region in the afternoon. Temperatures will continue their slow climb, with highs in the mid 80s at lower elevations. Southwest winds will increase with the approach of the trough, with gusts of 20-30 mph northeast of Lakes Erie and Ontario in the afternoon as somewhat stronger winds aloft mix down.

There will be some lingering cloud cover and possibly a stray shower tonight as the upper level trough axis shifts into New England.

SHORT TERM /TONIGHT THROUGH TUESDAY NIGHT/. Surface high pressure that dominated overhead of the region for much of the weekend will have pushed off into the Atlantic Monday causing winds to shift to the southwest. A few showers and storms can not be ruled out across the interior portions of the Southern Tier through the Finger Lakes region as there will be enough instability from the combination diurnal heating and the passage of a weak upper level shortwave. Outside of this, the return of the southwesterly flow Monday will result in an increase in heat and humidity. Highs Monday will approach the mid to upper 80s as well as a few locations along the Lake Plains through the Genesee Valley and Northern Finger Lakes regions to reach the low 90s. Provided the rise in humidity levels in these areas (upper 60s and low 70 degree dewpoints), heat advisory criteria may be approached or closely met as heat indices will rise up into the low 90s with a few places reaching near the 95 degree mark.

An upper level trough will cross the northern portions of the Manitoba and Ontario Canadian provinces Monday through Tuesday night. As a result the area will begin to see height falls aloft beginning Monday night, marking the start of a period of unsettled weather for the remaining time in the period. The associated cold frontal boundary crossing the Great Lakes Monday will begin to slow down Monday night as the upper level trough begins to weaken. That said, the chances for showers and storms will lie on the region's western doorstep Tuesday morning. Though the upper level trough is weakening, showers and storms still remain likely Tuesday, however shower activity will mainly be associated with the prefrontal trough ahead of the surface cold front. Stronger storms remain possible, though it will depend on timing and strength of the dynamics aloft. A more likely threat Tuesday is the possibility for heavy rain as there will be plenty of moisture and little shear in the region making showers and storms to be slow movers. Otherwise, another warm and humid day Tuesday with highs reaching the mid to upper 80s.

Some showers may linger into Tuesday night as the surface cold front is slow to cross across the region.

LONG TERM /WEDNESDAY THROUGH SATURDAY/. A bubble of weak high pressure will try to push overhead Wednesday which will attempt to dry things out. However, the frontal boundary from earlier in the week appears to stall out just to our south. While there some dry time is expected for the remainder of the period, the stalled front in addition to the passage of the upper level trough axis will be enough to ignite a few showers and storms. This will especially be the case during the afternoon and early evening time frame as diurnal heating will aid instability. The area for shower activity will span from the New York State Thruway southward, with the best chances lying across the far Southern Tier near the stalled boundary.

Conditions north of the stalled boundary will remain tolerable as humidity and temperature levels relax. Temperatures will remain above average with highs climbing up into the low to mid 80s each day.

AVIATION /07Z SUNDAY THROUGH THURSDAY/. Expect mid and high clouds to traverse the North Country through early this morning, otherwise expect clear to partly cloudy skies elsewhere. Typical river valley fog will impact the Southern Tier through early this morning as well with local IFR.

Mid and upper level clouds will be found across the area today. A few showers will be possible across the eastern Lake Ontario region this afternoon/evening, otherwise it will be mainly dry with VFR flight conditions area wide.

Outlook .

Sunday night through Monday . Mainly VFR. A small chance of showers. Tuesday . Showers and thunderstorms likely. Brief MVFR/IFR possible. Wednesday and Thursday . Mainly VFR with an afternoon/evening shower or thunderstorm possible.

MARINE. A tightening pressure gradient will allow southwest winds to increase on both lakes today ahead of a weak upper level trough. This will produce choppy conditions on Lake Erie. Winds will be a bit lighter on Lake Ontario, but still enough to generate some chop, especially across the western half of the lake.

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



SYNOPSIS . JM NEAR TERM . JM/SW SHORT TERM . EAJ LONG TERM . EAJ AVIATION . JM MARINE . JM


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RPRN6 - Rochester, NY 0 mi83 min SSW 8 G 11 69°F
RCRN6 - 9052058 - Rochester, NY 1 mi53 min 67°F 1019.3 hPa
45012 - Lake Ontario Buoy - 20NM North Northeast of Rochester, NY 26 mi33 min SW 12 G 14 72°F 73°F1 ft1018.8 hPa67°F
OSGN6 - 9052030 - Oswego, NY 59 mi53 min SSW 7 G 8.9 69°F 1019.4 hPa61°F

Wind History for Oswego, NY
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Rochester, Greater Rochester International Airport, NY11 mi29 minSW 610.00 miPartly Cloudy63°F57°F81%1020 hPa

Link to 5 minute data for KROC

Wind History from ROC (wind in knots)
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Last 24hrCalmSW6SW3CalmSW6CalmNW4N4SW4NW6NE5NE4N7N7N5N3SW3SW5SW4W4W7SW5SW4SW6
1 day agoCalmCalmCalmN4NE5NE5E6NE8NE10NE10NE11
G16
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2 days agoW3SW4SW5SW6SW3CalmE4N5SW45SW3E4N5NE8NE8NE5E3CalmCalmCalmCalmCalmCalmCalm

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 (4,6,7,8)
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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.