July 5, 2000

Weather Synopsis...

A cold front extended down from a low in the Canadian Maritimes through the Mid-Atlantic states. The synoptic flow ahead of this front is from the south and southwest.

Seabreeze Analysis...

In this seabreeze event, the seabreeze front formed along the shoreline of Ocean County and appeared to move in a west-southwesterly direction.

Analysis of Observations...

The graph of temperature at the Atlantic City Marina shows that the seabreeze front passed through the region at 1800 local time, or 0Z on July 6th.

The wind direction data also shows that the seabreeze went through around 1800 local time.

SST Discussion...

The SST graph below is for the Atlantic City Marina. It shows an abrupt temperature drop through the morning from 19 degrees Celcius to 15 degrees Celcius in the early afternoon.

The SST image below (1048Z) shows colder ocean temperatures right along the shoreline indicative of a minor to moderate upwelling event.

The SST image for 2209Z shows that during the afternoon and evening the ocean temperatures right along the coast had warmed up considerably, most likely due to the east to northeast wind resulting from the seabreeze.

CODAR Information...

The CODAR images below are from 9, 13, and 19Z. Since this seabreeze developed more in Central NJ and propagated down the coast, one would not expect for the CODAR to pick up the seabreeze until after the seabreeze front passed through. The 9 and 13Z images show the ocean currents to be very weak and in a confused state. The 19Z CODAR plot shows a distinct onshore current due to the winds across the coastal waters.