Posted by Steve Dashew (September 17, 2011)
We have mentioned in the past that while hurricanes get the press, their area at sea is limited and they are relatively easy to avoid. If the tropical system morphs into an extra tropical configuration, it covers a huge area, and is nearly impossible to get away from. We have a perfect example of this right now. If you go to http://www.opc.ncep.Nola.gov/shtml/A_brief.shtml you will find the most recent complete weather fax run from the Marine Prediction Center in the USA. The surface weather analysis shown above represents the remnants of tropical storm Maria, centered between Newfoundland and Greenland. It is orders of magnitude larger than Maria was, and has moved at speed of 40 to 50 knots over the last 24 hours. You would not want to be caught unawares by one of these systems. There is lots more on this subject in Mariner’s Weather Handbook.