Thursday, July 17, 2025

Dexter Doesn't Develop, Gulf Upper Shear Is King.

There are many ingredients that go into making a Tropical Storm/Hurricane.  Typically, it begins with a tropical wave moving across the Atlantic, Caribbean or Gulf that develops a surface/low-level spin.  Obviously, water temperatures have to be warm, the MJO in the favorable (rising air) phase, and, most importantly, the upper wind shear can't be too strong to prevent any surface formation.  Clearly, with INVEST 93 L, it could not overcome the upper wind shear.


It NEVER developed a low-level center, rather just a bunch of mid-level swirls.  I find the main swirl now west of Lake P. and north of Morgan City




I was driving back across the Causeway around 3 PM, and Lake Pontchartrain was slick/flat.  IF we did have a tropical low-level system, the Lake would be churning.  Have some downpours dropped several inches of rain?  Absolutely, but I find the models overplayed this disturbance.  I'm always concerned when we cry wolf and the wolf never comes.   Radar still has some heavy storms around, but not that many.




About the only thing I've found correct about the models is Yesterday's location of the heaviest rainfall. For days, they overplayed the rainfall amounts with all stations covering how our local Emergency Managers were ready. 




With all the clouds and rainfall, temperatures are less hot.  With no fronts around, Friday should be back to more typical daytime heating storms becoming drier & hotter for the weekend.


Hopefully, that is the weather for NEXT weekend's Grand Isle Tarpon Rodeo.


I will be on Ch. 8's NOLA Live program Friday at 11 AM with this year's Rodeo President, Jason Bergeron.  We will show you how to register for our $ 10,000 Grand Prize and outline what fun will be happening on the Island besides the usual great fishing.  Plan on being with us NEXT weekend or at least get your name entered for the Grand Prize at tarponrodeo.org. Stay tuned!

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