http://www.weatherjackwilliams.com science writer and book author Mon, 06 Sep 2010 20:40:38 +0000 http://wordpress.org/?v=abc en hourly 1 http://www.weatherjackwilliams.com/archives/answers-aircraft-altimeter-errors http://www.weatherjackwilliams.com/archives/answers-aircraft-altimeter-errors#comments Sat, 31 Jul 2010 21:36:54 +0000 Jack Williams http://www.weatherjackwilliams.com/?p=2205 Q: Can you help me understand in very simple terms altimeter error when flying from high to low pressure areas and from low to high areas?  I am studying it but its just not clicking.—Mark, Noblesville, Ind. A: To answer  your question I’ll begin with some basic information about aircraft altimeters and then use the diagram [...]]]> http://www.weatherjackwilliams.com/archives/answers-aircraft-altimeter-errors/feed 9 http://www.weatherjackwilliams.com/archives/answers-rising-and-sinking-air http://www.weatherjackwilliams.com/archives/answers-rising-and-sinking-air#comments Sat, 19 Dec 2009 23:03:19 +0000 Jack Williams http://www.weatherjackwilliams.com/?p=1491 http://www.weatherjackwilliams.com/archives/answers-rising-and-sinking-air/feed 1 http://www.weatherjackwilliams.com/archives/answers-inside-weather-fronts http://www.weatherjackwilliams.com/archives/answers-inside-weather-fronts#comments Sun, 22 Nov 2009 02:29:58 +0000 Jack Williams http://www.weatherjackwilliams.com/?p=1337 Q: In the November issue of AOPA Flight Training, you discuss extratropical cyclones, including the movement of cold air under warm air and vice versa. If I understand this correctly, the fronts themselves do not discriminate between the cold or warm air ahead of them.  How  do you explain movement under (cold into warm) or [...]]]> http://www.weatherjackwilliams.com/archives/answers-inside-weather-fronts/feed 1 http://www.weatherjackwilliams.com/archives/answers-extratropical-cyclone-winds http://www.weatherjackwilliams.com/archives/answers-extratropical-cyclone-winds#comments Sun, 11 Oct 2009 17:31:45 +0000 Jack Williams http://www.weatherjackwilliams.com/?p=1199 Q: My question is about your article in the November  AOPA Flight Training magazine on tropical cyclones.  I’m trying to reconcile two potentially different ideas: first, that a cyclone has swirling air (which I assume to mean the the air masses are rotating around the Low), and second, that the warm front and cold front [...]]]> http://www.weatherjackwilliams.com/archives/answers-extratropical-cyclone-winds/feed 1