Updated discussion
.KEY MESSAGE 2...
An upper level low shifts east and will linger over eastern
Canada, with broad troughing over the eastern US through the
weekend. This pattern will lead to cool conditions, with a
stretch of highs and lows 5 to 10 degrees below normal. Stuck
with NBM temperatures for now, but trends will be monitored as
there will be a few nights across the interior where frost may
be possible.
The offshore low that was mentioned in the previous forecast has
shifted farther in the latest guidance, far enough to lower the
potential for impacts to the area.