Worst Fog in 20 Years: Weather Expert

Thick fog slowed down commutes this morning on the ground and in the air.

A variety of variables such as moisture from yesterday's rain, fast-falling temperatures and the absence of wind sent visibilities down to zero in places as diverse as Wilmington, Del.; Allentown, Pa. and Atlantic City, N.J., according to NBC10 First Alert Meteorologist Bill Henley.

"This is the worst fog I've seen in this area in 20 years," said Henley.

The National Weather Service issued a Dense Fog Advisory through noon for the entire region calling for visibilities of ¼ mile or less -- a distance that constitutes thick fog, according to NBC10 First Alert Weather meteorologist Bill Henley.

As of 8:15 a.m., visibility dropped to 1/8 of a mile and with fog up and down the East Coast more than 50 incoming/outgoing flights were canceled and another 50-plus flights were delayed.

The fog was so thick that you couldn’t see across the Delaware River from Camden to Philadelphia.

Temps dipped into the 30s creating some black ice and frosty roads, especially north and west of the city. Speed restrictions were put into effect on some area highways and bridges.

The basic advice is to take it easy out on area roads and to leave yourself plenty of time to get where you need to go. Also leave plenty of room between you and other cars and don't use your high beams.

The Weather Service advised that it wasn't clear exactly when the thick fog would burn off.

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