Two Year Anniversary of the Derecho

It's a name and date we'll always remember.{ } June 29, 2012.{ } The derecho.{ }

Before that day, most of us had never even heard the term 'derecho'.{ } After that storm, it's a name we all remember.{ }

That Friday was one of the hottest days of the year.{ } In fact, one degree shy of the hottest temperature recorded at Reagan National.{ } The high reached 104 degrees (a record for the day).{ } With such high temperatures and humidity, the atmosphere was primed for severe weather.{ } Little did we know how widespread, and devastating, the severe weather would be.

The line of severe storms originated in Indiana, moved through Ohio and parts of West Virginia, before slamming our region between 9 p.m. and 11 p.m. that Friday night.{ } Check out the radar composite and infrared satellite from that night.

CIMMS (Cooperative Institute for Meteorological Satellite Studies

Here are a few stats from the meteorologists at our local NWS forecast office in Sterling, VA.{ } They have a thorough storm summary powerpoint you can view here.{ }

National Weather Service - Sterling, VA

Winds upwards of 70 mph brought down many trees, thousands were without power for days, and it was a long road to clean-up after the devastating storm.{ }

Fortunately, derecho's are not a common phenomenon in our area.{ } Here's a climatological derecho frequency graphic created by the Storm Prediction Center.{ } The SPC also has an extensive link on derecho's within the site.


It's one of those day's we'll all remember and a weather term we'll never forget.{ } I'll leave you with a link from the "Surviving Severe Weather" special the station aired last year.{ } Meteorologist Brian van de Graaff looks back at the infamous storm.

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