Describe the pattern of regional surface winds around the center of a low pressure system in the northern hemisphere?

ccw.

counterclockwise

I do not know if you know about conservation of angular momentum so will assume not.

imagine a low over New York.

I particle of air from up around Albany is drawn South to the low.
HOWEVER
The particle was moving east with the surface of earth toward the sunrise at some speed V
As it goes south, the speed of the surface of the earth is faster east than our particle and our particle is left behind, west of the low at NY because as you go toward the equator your radius from the axis of rotation of the earth increases.
Conversely a particle from somewhere south in New Jersey moves North toward the low. It is moving faster east than the earth at the new smaller northern radius, Therefore it is moving EAST of our low at New York.
SO
the particle moving south from Albany ends up west of new york
the particle moving north from New Jersey ends up east of New York
Draw a picture now.
You have a counterclockwise rotation of air now around New york.
Sometimes this is called the "Coriolis effect".
It is really nothing but common sense though when you think about it :)

Thanks

You are welcome. Now remember how I did that because there is much confusion.

If we were only in a satellite looking down on it, it would be easy :)

In the northern hemisphere, the pattern of regional surface winds around the center of a low-pressure system follows a clockwise direction. This pattern is known as cyclonic circulation. To understand this pattern, we need to consider a few factors:

1. Coriolis Effect: The Coriolis effect is caused by the rotation of the Earth. In the northern hemisphere, it causes moving air to be deflected to the right. This means that surface winds approaching a low-pressure system from any direction will be deflected to the right.

2. Pressure Gradient: Low-pressure systems have lower atmospheric pressure at their center, which creates a pressure gradient. The pressure gradient drives air to move from areas of higher pressure towards areas of lower pressure.

Considering these factors, the following pattern of winds can be observed around a low-pressure system in the northern hemisphere:

1. Near the center of the low-pressure system: Air converges towards the center, rising vertically due to the low pressure. This upward motion often leads to cloud formation and precipitation. There is minimal horizontal wind movement near the center.

2. Southeast Quadrant: As air approaches the low-pressure system from the southeast, it gets deflected to the right by the Coriolis effect. This results in a southeasterly wind in this quadrant.

3. Southwest Quadrant: Similarly, air approaching from the southwest is deflected to the right, resulting in a southwesterly wind in this quadrant.

4. Northwest Quadrant: Air moving towards the low-pressure system from the northwest is also deflected to the right, resulting in a northwesterly wind in this quadrant.

5. Northeast Quadrant: Finally, air approaching from the northeast is deflected to the right, leading to a northeasterly wind in this quadrant.

Overall, the wind flow around a low-pressure system in the northern hemisphere is counterclockwise, with winds blowing from southeast to northwest on the east side of the low, and from southwest to northeast on the west side of the low. It is important to note that the wind speeds and exact directions can vary depending on various atmospheric conditions and the particular strength and size of the low-pressure system.