Mount Holly has similar thoughts.
Upton:
Friday could be interesting meteorologically speaking. Global models
are beginning to depict a broad low pressure system near North
Carolina forming off the decaying front from earlier in the week.
This inverted trough rides the synoptic flow north nearing Long
Island Friday. With it precipitable water values increase to around
1.5-1.7 inches. Depending on the nature of the system and its
proximity, southern New York could see increased rain chances for
Friday.
Attention shifts over the weekend to the trough and frontal system
deepening near the Ohio River valley. This could be a fairly a
traditional frontal system with CAPE values around 500-1000 J/kg and
unidirectional shear meaning that strong to severe thunderstorms may
be possible. The exact timing remains uncertain, but current
guidance is hinting towards a Sunday into Monday timeframe.