| 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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