Marine Weather Net

Lake Ontario - Niagara River to Hamlin Beach Marine Forecast


TONIGHT

SW
WINDS
10 - 15
KNOTS

SATURDAY

SW
WINDS
10
KNOTS

SATURDAY NIGHT

E
WINDS
< 10
KNOTS

SUNDAY

S
WINDS
10
KNOTS

The Marine Weather Forecast In Detail:
LOZ042 Forecast Issued: 416 PM EDT Fri May 31 2024

Tonight...Southwest Winds 10 To 15 Knots. Clear. Waves 2 Feet Or Less.
Saturday...Southwest Winds 10 Knots Or Less Becoming West. Sunny. Waves 1 Foot Or Less.
Saturday Night...East Winds Less Than 10 Knots Becoming South. A Chance Of Showers Overnight. Waves 1 Foot Or Less.
Sunday...South Winds 10 Knots Or Less Becoming Southwest. A Chance Of Showers. Waves 1 Foot Or Less.
Sunday Night...Southwest Winds 10 Knots Or Less. Partly Cloudy. Waves 1 Foot Or Less.
Monday...Southeast Winds 10 Knots Or Less. Partly Cloudy. Waves 1 Foot Or Less.
Tuesday...Southeast Winds 5 To 10 Knots Becoming South. A Chance Of Showers. Waves 1 Foot Or Less.
Wednesday...South Winds 5 To 10 Knots. A Chance Of Showers And Thunderstorms. Waves 1 Foot Or Less. Winds And Waves Higher In And Near Thunderstorms.
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Area Forecast Discussion
National Weather Service Buffalo NY
642pm EDT Fri May 31 2024

Synopsis
Dry weather will continue through Saturday as high pressure across the region drifts to the east coast. Weakening low pressure will move into the Ohio Valley late Saturday night and Sunday, bringing a chance of a showers and a few thunderstorms, especially across Western New York. Dry and warm weather will follow for early next week.

Near Term - Through Saturday
Mid level ridge will slowly crest over the region through Saturday as surface high pressure drifts to the east coast. This will maintain fair weather across the region through Saturday. There will be an increase in high clouds by later Saturday afternoon ahead of an approaching shortwave trough, but these initial clouds will be thin cirrus with plenty of sunshine still filtering through.

Good radiational cooling conditions expected tonight, but the air mass will be a touch milder than last night, limiting coverage potential of frost. Some patchy frost is still possible in the coldest valleys of the Southern Tier and the coldest spots of Lewis County. Overnight lows ranging from the upper 30s in the coldest spots of the western Southern Tier and Lewis county with 40s elsewhere. Modest warm advection and sunshine should boost temperatures Saturday several degrees warmer than Friday's readings with most highs in the mid to upper 70s.

Short Term - Saturday Night Through Monday Night
High pressure ridging at the surface and aloft will shift east from the Great Lakes to New England Saturday night. In its wake, a weakening shortwave will lift out of the Ohio Valley and towards the forecast area. While this will result in a wealth of cloud cover for the region, the vast majority of the night should remain rain free save for a few showers possibly reaching the far western zones late in the night. Otherwise, with limited radiational cooling, a warming airmass and gentle southerly flow developing, it should be a notably milder night with low temperatures some 10-15 degrees warmer compared to the last few nigheights we've seen.

For Sunday, mid-range model guidance continues to converge towards a solution that favors a more southern track and substantial weakening of the aforementioned shortwave trough as it runs up against and flattens the ridge to the east. Have tapered back Probability of Precipitation to reflect this trend, though areas in the Southern Tier (especially closer to the NY/PA border) are still 'likely' to see a few showers or even an isolated tstorm Sunday. The precipitation and thicker cloud cover in this area are expected to hold down daytime temps in the upper 60s to low 70s, while mid to upper 70s will be found further north where some sunshine may peak out before day's end.

With the loss of daytime heating and the return of strong high pressure subsidence, any lingering showers should taper off or shift out of the forecast area fairly quick Sunday evening. This stretch of dry weather should then persist through Monday night before the high again migrates well east of the region. This also continue the warming trend, with highs Monday mainly in the upper 70s though a few readings in the low 80s are expected across the Lake Plains. Monday night will feature lows in the mid 50s to low 60s.

Long Term - Tuesday Through Friday
Broad mid-level ridging over the Great Lakes and a deepening trough over the Northern Plains will both gradually shift eastward through the remainder of the week. This change in the overall jet stream pattern will cause much warmer air to continue circulating into the region, while also drawing additional GOMEX moisture northward into the eastern CONUS. The increasing heat and humidity will result in true summer-like weather Tuesday through Wednesday, with the mercury climbing into the 80s across much of the region both days. Increasing instability may also result in the formation of diurnal showers and thunderstorms, though chances will be greater on Wednesday as surface high pressure loses more of its influence over the region and dewpoints climb into the 60s.

The trough will deepen and then close off across the Upper Midwest by Thursday. This will cause widespread showers and likely a few thunderstorms to push across the eastern Great Lakes region as the system's cold front and prefrontal trough move through the region between Thursday and Friday. This should also bring about the beginning of a cooling trend across the region, with high temps expected to fall back into the low/mid 70s by the end of the week.

Marine
Westerly winds to around 15 knots on Lake Ontario will produce a moderate chop on the lake into this evening.

Relatively quiet weather this weekend into early next week with no marine headlines expected. A weak low moves northeast from the Ohio Valley to just south of the lower Great Lakes late Saturday night through Sunday with a chance of a few showers and isolated thunderstorms. High pressure will then build into the region Sunday night through Monday.

NOAA Buffalo NY Office: Watches - Warnings - Advisories
NY...None.

Marine
None.

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