TROPICAL SYSTEM 91L. A 5 DAY PLUS FORECAST BY THE GFDL MODEL.

THANKS TO PENN STATE UNIVERSITY DEPARTMENT OF METEOROLOGY FOR THIS GRAPHIC.

 Left clicks on this graphic should enlarge it for you.

THIS IS A TIME-SENSITIVE POSTING SUBMITTED 7-30-2011 LATE EVENING.

This is the GFDL model’s forecast for system 91L 126 hours from the 2 PM Eastern time release (today 7-30-2011).  Note that it is shown to be north of Eastern Cuba.  I calculate the forecast time to be 5.25 days (or 5 days and 6 hours) beyond the release time.  That would be Thursday, August 4 at 8 PM Eastern time.  This, of course is a forecast loaded with unknowns and fickle variables so one should not consider it a “given.”  The GFDL model (Geophysical Fluid Dynamics Laboratory) has impressed me over the last few years.  I’m posting this now so that perhaps on Thursday night you might want to check to see how close it is.  This posting is not intended to alarm anyone needlessly.  If you are in a position where you like to plan ahead and are potentially in the path of tropical systems from the Atlantic and Gulf of Mexico, I advise you to pay close attention to forecasts available to you.  It is my opinion that the Weather Channel on television does a great job covering tropical weather and I highly recommend it as a source.   Also, on the right hand margin of this page under Miscellaneous/Other you will find a link to the on-line Weather Channel.  I also highly recommend the tropical weather blog of Dr. Jeff Masters.  Here is a link:  http://www.wunderground.com/blog/JeffMasters/article.html

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