Central Atlantic Storm Investigators


Storm Report

CASI Storm Report
Name Date Time Location City State Event Detail
Michael Girone 8/16/97 5:00pm Metro NJ East of Caldwell NJ Thunderstorm Anviltop
Lightning Some
Wind E58-74
Rain Heavy
Temperature Extreme High Temp 96F

Storm Summary
Late in the afternoon of Saturday, August 16, 1997, a powerful derecho barreled through the Tri-State area. Winds easily exceeding severe limits pounded Northern NJ, South-eastern NY, parts of Southern CT, NYC and Long Island. The derecho had formed during the early morning hours over Southern Iowa/Northern Missouri, striking cities such as Chicago, IL; Toledo & Cleveland, OH; Erie, Williamsport, & Scranton/Wilkes-Barre, PA; Newark,NJ; and NYC. During its long life, the derecho reached forward speeds up to 70 miles per hour. Some large hail and a few tornadoes also accompanied this phenominal storm. As the derecho moved across metro NJ during the afternoon rush, a well-developed anvil was visible as it began to block out the sun. When its powerful gust front tore through the area, a canopy of mammatus clouds, an indicator of the storm's strength, loomed over city streets and dwellings. Heavy rain, lightning, and deafening thunder pounded the area for almost an hour. The storm exited the area as quickly as it had moved in. At 7 p.m., area residents were treated to a brilliant sunset, as well as an impressive view of the derecho's back-sheared anvil as the storm steadily moved away.

PHOTOS: (Click Below for large images)

1. Cumulonimbus - Looking SW. Clouds moving to the left and towards camera.

2. Mammatus - Looking SE, clouds moving SE. This picture was taken shortly before the gust front blasted through.

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