Here is a slideshow from photos taken of the cumulus and cumulonimbus clouds that developed on Friday afternoon in South Plainfield and North Edison. On this day, the high temperature reached 87 degrees at GWC in South Plainfield. Coupled with a dew point peaking at 76, the heat and humidity produced a top heat index of 96 degrees. A quick thundershower developed around 6:00 PM, and brought a trace of rain to the area.