A North wind is bringing cooler air in for the start of the week as
the jet stream dips below New York State. Later in the week, the jet stream
is pushed northward above us. This will slowly change our wind direction to a
southerly flow with warmer weather for the end of the week. Then hot weather
is expected for the weekend.
Here is why we are seeing a north flow with cooler air to start the week.
There is high pressure to our northwest and low pressure to our northeast.
High pressure turns clockwise and low pressure turns counterclockwise. This
means there is a north flow on the right side of high pressure and north flow
on the left side of low pressure. This is an agreeable north flow, bringing
cool air down from the north. This is why we are seeing below average
temperatures to start the week. Temperatures start in the 70s to near 80
degrees on Monday and Tuesday.
The jet stream pushes north, sending this low pressure system out to the east
on Wednesday. Also, the high pressure system that was to our northwest will
slide over so it is to our northeast. A low pressure system that was on the
West coast of Canada also will slide over so it is to our northwest. This is
the opposite scenario as Monday and Tuesday. The left side of high pressure
has and south flow and the right side of low pressure has a south flow. This
is an agreeable south flow, bringing warm air up from the south.
This south flow is weak at first with highs in the lower 80s on Wednesday,
but becomes stronger on Thursday and Friday with highs in the mid 80s.