Marine Weather and Tide Forecast for Canandaigua, NY

NEAR TERM /THROUGH SUNDAY NIGHT/
Tonight, there will remain chances for showers and also drizzle across our region as the main upper-level low tracks through our region. As temperatures cool to near the dewpoint overnight patches of fog will be possible, especially across higher terrain and areas that received precipitation.

The closed low will ever to slowly walk east Sunday with moisture continuing to wrap around across our region. Upslope flow and diurnal influences will support some measure of showers or even areas of drizzle through at least mid-day. As the low further departs and moisture depletes we will likely see drier weather materialize from west to east in the late afternoon and evening.

Drier weather will take hold Sunday night as high pressure builds in across the region. We will also see clearing skies and cool conditions, low found mainly in the 40s. There may be a few spots across the Tug Hill that see mercury reading dip back into the upper 30s.

SHORT TERM /MONDAY THROUGH TUESDAY/
Monday through Tuesday a vertically stacked, closed low will drift from near the Maine coast eastward into the North Atlantic. The western edge of the circulation will bring clouds and possibly a few isolated showers to the eastern Lake Ontario region Monday. This may linger into Tuesday as well, especially for the eastern edge of the forecast area in the western foothills of the Adirondacks.
Otherwise, a ridge of high pressure building into the Great Lakes will bring a return to dry weather and at least partial sunshine elsewhere both Monday and Tuesday.

Temperatures will be quite cool, running about 10 degrees below average. Lows will likely drop into the mid 30s Monday night across the interior Southern Tier and North Country. This may bring a risk of frost, although some gradient wind persisting may keep just enough breeze to limit frost formation.

LONG TERM /TUESDAY NIGHT THROUGH SATURDAY/
A mid level closed low will evolve in the base of the longwave trough over the Great Lakes and/or southeastern Canada during the second half of the week. This will bring a long stretch of very cool and unsettled weather to the region starting late Tuesday night or Wednesday, and lasting through next weekend.

There continues to be some spread in the synoptic scale details of the pattern, such as the placement and track of the mid level closed low and associated surface low. These details will determine exactly how wet we get, with the most widespread rain expected Wednesday through Thursday, with gradually diminishing coverage and intensity of rainfall next weekend.

Temperatures will continue to run 10+ degrees below average through the entire period.

AVIATION /00Z SUNDAY THROUGH THURSDAY/
Tonight, an upper level low spinning overhead will bring widely scattered showers. Cigs will range between VFR to MVFR, with IFR ceiling heights developing overnight.

Outlook...

Sunday.. MVFR to IFR with scattered showers, greatest chances east of KROC.

Monday and Tuesday...VFR.

Wednesday and Thursday...VFR to MVFR with showers.

MARINE
A southwest and then tonight westerly flow increasing to small craft levels behind a cold front. Waves will increase, and remain above four feet on the lakes through much of Sunday and Sunday evening within a northwesterly flow.

Surface high pressure will nose southward across the lower Great Lakes Sunday night and into the start of the new work week with light winds and waves on the lakes.

BUF WATCHES/WARNINGS/ADVISORIES
NY...None.
MARINE...Small Craft Advisory until 11 PM EDT this evening for LEZ020.
Small Craft Advisory until 11 PM EDT Sunday for LEZ040-041.
Small Craft Advisory until 11 PM EDT Sunday for LOZ042-045.
Small Craft Advisory until 5 AM EDT Monday for LOZ043-044.