Locally severe storms to blow through New York state, Ontario and Quebec
A storm system racing eastward through southern Canada will trigger bands of thunderstorms, including locally severe weather in parts of the interior northeastern United States and neighboring Canada.
The best chance for isolated incidents of damaging wind gusts and destructive hail will be western, central and northern New York state, southern Ontario and southwestern Quebec as well as the northern tier of Pennsylvania.
The strongest storms are likely to occur during the evening hours, when an isolated tornado cannot be completely ruled out.
"Cities most likely to be impacted by the strongest storms will include Rochester, Syracuse and Buffalo, New York; and Ottawa, Canada," AccuWeather Meteorologist Ryan Adamson said.
Motorists may face delays during the evening commute along Interstate 90 and a portion of I-81.
During the evening hours, storms should rapidly move eastward and impact parts of the central and northern Appalachians.
Some strong storms with frequent lightning and gusty winds may occur in parts of the central Applachians and the Hudson and Susquehanna valleys later in the evening. Thus, cities such as Albany, New York, may be hit well after dark.
However, after the storms move east of the mountains later at night, they are forecast to lose their intensity quickly and degenerate into widely scattered downpours.
"The main threat with the storms will be gusty winds and brief downpours, although some hail will also be possible," Adamson said.
Wind gusts of 35-50 mph will be common as the storms roll through. Sporadic tree and property damage, as well as isolated power outages, will be possible.
Heavy rain drenched much of Pennsylvania from Sunday into Monday and caused widespread flooding throughout the state. Streams and creeks spilled out over their banks, and flooding in the Interstate-95 corridor near Philadelphia was reported.
The water level on many of these streams is still running just below flood stage, so any additional rain could trigger another round of flooding concerns.
Residents living in flood-prone areas should keep an eye on the radar and be ready to seek higher ground in the event that water infiltrates their home.
There is a small chance that an isolated tornado spins up from central New York to parts of Ontario and southwestern Quebec into Wednesday evening, but a tornado outbreak is not in the offing.
Once the thunderstorms push off the coast Wednesday night, a surge of pleasant, refreshing air will dive into the Northeast to end the week before hot air currently baking the Plains returns in time for Father's Day weekend.