National Weather Service Huntsville says Gravity Wave, Maybe-Maybe Not

Extra-tropical cyclone produced strong winds Monday April 13, 2009 in North Alabama. The storm produced strong winds from the west in Birmingham. They were on the southern edge of the storm. Scottsboro was on the northern edge of the storm. Our winds came out of the east as a result of being on the northern edge of the storm.

A sketch of the gravity wave that is claimed to cause the damage Monday morning April 13, 2009.
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Meteorologist Mike Coyne of the National Weather Service office in Huntsville states a "Gravity Wave struck our area in the early hours of Monday morning on April 13, 2009. "It's a once in every 5 year phenomena..." Mr. Coyne stated refering to the so called "gravity wave" event. The Daily Sentinel article: http://thedailysentinel.com/story.lasso?ewcd=1ecbb44372814803

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We have never had high sustained winds of this magnitude. If you live within 2 miles of the base of Sand Mountain you realize that easterly and southeasterly flow of strong winds occur much more frequently than once every 5 years, particularly when strong thunderstorms are to our east. However, these thunderstorms do not last for 3 hours with 50-60 mph sustained winds and 80 mph gusts reported. We all hope and prey that Monday mornings event is not a once in a 5 year event.
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About "gravity waves:" http://www.theweatherprediction.com/habyhints/64/
This is an excellent You-Tube video demonstrating the undulating motion of a gravity wave. http://www.youtube.com/watch?v=yXnkzeCU3bE
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I think the "gravity wave" labeling of the Monday morning event is an excuse by the Huntsville National Weather Service for failing to issue a warning as a result of an extra-tropical cyclone slightly to our south. An extra tropical cyclone is a strong low pressure cell. (We experianced an inland Hurricane.) Birmingham experianced the same storm except their winds were from the west. Our winds were from the east and southeast since we were on the northern edge of the counter clockwise rotating cyclonic storm.
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About extra-tropical cyclones: http://www.usatoday.com/weather/wstorm.htm This is the weather event we experianced. We also experianced the failure of a bureaucratic national weather service who will make excuses rather than resolve problems of a scientific nature. Their reliance on set bureaucratic protocols does not facilitate scientific discovery and scientific forecasting for unusual weather events.