Huge blowup of convection off NC/VA coast means ?

beenthru6 · #1 Postby **beenthru6** » Mon Sep 15, 2003 5:44 am

This looks very interesting, and was just wondering what this will mean in regards to Issy. Anybody?
http://www.goes.noaa.gov/ECIR3.html

#2 Postby **charleston_hugo_veteran** » Mon Sep 15, 2003 5:45 am

That's interesting! Good pic! :wink:

#3 Postby **cycloneye** » Mon Sep 15, 2003 5:50 am

That is lifting northward with no effect on track on Isabel.

#4 Postby **Deenac813** » Mon Sep 15, 2003 5:51 am

Good photo! Isabel looks huge!

#5 Postby **wxman57** » Mon Sep 15, 2003 6:07 am

It means that the upper-level low which has been off the SE U.S. coast for days is lifting northward across the area. Convection is firing to the eastern side of the upper low. The low is lifting out of Isabel's path as a stronger trof digs down into the southeast U.S. This will be the trof that begins steering Isabel NW-NNW.

beenthru6 · #6 Postby **beenthru6** » Mon Sep 15, 2003 6:29 am

Thanks wxman

That was a very good explanation and answered my question.

#7 Postby **vortex100** » Mon Sep 15, 2003 7:05 am

The same upper level trough that is creating those thunderstorms off the mid-Atlantic coast looks as if it is also responsible for the shearing action that has been weakening the west side of Isabel since last night. Notice on the water vapor imagery (http://www.ssd.noaa.gov/PS/TROP/DATA/RT ... -loop.html) how an extension of the trough creating those thunderstorms is affecting the outflow on the western side of the hurricane. Once the main part of that trough pushes further northeastward the shearing affects should gradually subside to the west of Isabel. Sometime tomorrow or tomorrow night we may see some reinvigoration of Isabel as the outflow on the west side begins to improve. Until then, however, don't be surprised to see some more slight weakening in Isabel.

Huge blowup of convection off NC/VA coast means ?

Huge blowup of convection off NC/VA coast means ?

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