.NEAR TERM /THROUGH TONIGHT/...
Lake effect snow east/southeast of Lake Ontario has remained
relatively disorganized through the night thus far. This might be
changing shortly as recent radar trends showing signs of a
single plume structure developing just offshore of the south
shore of Lake Ontario coincident with strengthening lake breeze
circulations. Timing looks to be consistent with several higher
resolution models suggesting a strengthening single band
between 09z and 15z focusing on the southeast corner of Lake
Ontario. The lake effect snow should reach peak intensity during
this time period, with snowfall rates of 2" per hour possible.
The band of snow will then move back north and east across
Oswego County later this morning through the afternoon and
likely weaken as shear profiles increase. A weaker band of snow
may get as far north as southern Jefferson County late this
afternoon and early this evening.
A weak trough axis will then move southeast across Lake Ontario to
night. The band of snow should intensify as convergence increases
along the trough axis, with a band of heavy snow moving south across
Oswego County and back towards far northern Cayuga County. The
single band of snow will then break up into a larger spray of
multiple bands and snow showers southeast of Lake Ontario before
daybreak Thursday, with minor accumulations spread from Orleans to
Oswego counties and inland across the western Finger Lakes. This may
bring some minor accumulations to the Rochester area just in time
for the Thursday morning commute