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News Talkback >> 2008 News Talkbacks

danielw
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Posts: 3527
Loc: Hattiesburg,MS (31.3N 89.3W)

Bertha... Status Quo?
Fri Jul 04 2008 09:41 PM

I'm not very good with graphics, but I'll give this a layman's version of a shot.
I've cropped some of the upper air maps from NHC to show the upper air cuurents at 850mb (5000ft) and 200mb (38000ft).

The first two are from the area around Tropical Storm Bertha. And the latter two are from the GOM and NW Caribbean area.
The links will take you to the latest upper air charts of the Atlantic and Eastern Pacific Oceans.
The contour lines indicate clockwise ( High pressure) circulation and counter-clockwise (Low pressure) circulation. The numbers are the wind speeds at that altitude at the time of the map.
Anti-cyclonic circulation at 200mb, over cyclonic circulation at 850mb would normally be favorable for strengthing. SSTs and other parameters would also have to be in place.
070408 1800Z or 2 PM EDT today.

200mb-38000ft

850mb-5000ft

Gulf of Mexico and NW Caribbean Sea

200mb-38000ft

30-50 knots of wind shear present in W. GOM

850mb-5000ft

NHC links to the 850mb and 200mb charts.
http://www.nhc.noaa.gov/tafb/QUNA00.jpg
http://www.nhc.noaa.gov/tafb/QHQA17.jpg

Trropical Storm Bertha, appears to be slightly increasing in intensity. Due mainly to the indication of higher, colder cloud tops near the center. The 'rainbow' enhancement would seem to indicate some type of wind shear or dry air on the western side of the system. Notice the difference in the low and mid level blue-grey clouds on the left side of the storm.
The lower larger circular area underneath the storm appears to be tilted somewhat to the upper right side of the photo, or to the northeast.

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Subject	Posted by	Posted on
Tropical Storm Bertha Forms South of Cape Verde Islands	MikeC	Fri Jul 04 2008 09:41 PM
Hurricane Bertha	John C	Mon Jul 07 2008 06:44 AM
Re: Tropical Storm Bertha Forms South of Cape Verde Islands	cieldumort	Mon Jul 07 2008 03:15 AM
Re: Tropical Storm Bertha Forms South of Cape Verde Islands	LDH892	Mon Jul 07 2008 02:05 AM
Re: Tropical Storm Bertha Forms South of Cape Verde Islands	Hugh	Sun Jul 06 2008 09:30 PM
Re: Tropical Storm Bertha Forms South of Cape Verde Islands	Random Chaos	Sun Jul 06 2008 09:23 PM
Re: Tropical Storm Bertha Forms South of Cape Verde Islands	Hugh	Sun Jul 06 2008 08:56 PM
Re: Tropical Storm Bertha Forms South of Cape Verde Islands	LoisCane	Sun Jul 06 2008 08:13 PM
Re: Tropical Storm Bertha Forms South of Cape Verde Islands	Hugh	Sun Jul 06 2008 06:09 PM
Re: Tropical Storm Bertha Forms South of Cape Verde Islands	cieldumort	Sun Jul 06 2008 05:56 PM
Re: Bertha intensifying	Random Chaos	Sun Jul 06 2008 05:02 PM
Re: Bertha intensifying	Random Chaos	Sun Jul 06 2008 04:56 PM
Re: Bertha intensifying	weatherguy08	Sun Jul 06 2008 04:49 PM
Re: Bertha intensifying	Hugh	Sun Jul 06 2008 04:44 PM
Bertha intensifying	craigm	Sun Jul 06 2008 04:33 PM
Re: Accuweather	Genesis	Sun Jul 06 2008 04:17 PM
Re: Accuweather	Hugh	Sun Jul 06 2008 03:40 PM
Re: Accuweather	LDH892	Sun Jul 06 2008 02:21 PM
Re: Accuweather	scottsvb	Sun Jul 06 2008 02:02 PM
Re: Accuweather	WeatherNut	Sun Jul 06 2008 01:57 PM
Accuweather	craigm	Sun Jul 06 2008 01:17 PM
Central Atlantic...Sunday	danielw	Sun Jul 06 2008 10:19 AM
Re: Tropical Storm Bertha Forms South of Cape Verde Islands	scottsvb	Sat Jul 05 2008 11:01 PM
Re: Tropical Storm Bertha Forms South of Cape Verde Islands	weatherguy08	Sat Jul 05 2008 09:25 PM
Re: Tropical Storm Bertha Forms South of Cape Verde Islands	typhoon_tip	Sat Jul 05 2008 09:17 PM
Re: Tropical Storm Bertha Forms South of Cape Verde Islands	hurricaneguy	Sat Jul 05 2008 08:19 PM
Re: Tropical Storm Bertha Forms South of Cape Verde Islands	typhoon_tip	Sat Jul 05 2008 04:59 PM
Re: Bertha... Status Quo?	Random Chaos	Sat Jul 05 2008 10:41 AM
Re: Bertha... Status Quo?	CaneTrackerInSoFl	Sat Jul 05 2008 10:32 AM
Re: Bertha... Status Quo?	flanewscameraman	Sat Jul 05 2008 10:21 AM
Re: Bertha... Status Quo?	craigm	Sat Jul 05 2008 10:04 AM
Re: Bertha... Status Quo?	DarleneCane	Sat Jul 05 2008 09:19 AM
Bertha... Status Quo?	danielw	Fri Jul 04 2008 09:41 PM
Re: Bertha strengthening?	LoisCane	Fri Jul 04 2008 07:54 PM
Bertha strengthening?	CaneTrackerInSoFl	Fri Jul 04 2008 02:55 PM
Re: Tropical Storm Bertha Forms South of Cape Verde Islands	cieldumort	Fri Jul 04 2008 03:29 AM
Re: Tropical Storm Bertha Forms South of Cape Verde Islands	typhoon_tip	Thu Jul 03 2008 11:35 PM
Re: Surprising Early Cape Verde Cyclogenesis	MichaelA	Thu Jul 03 2008 12:49 PM
Re: Surprising Early Cape Verde Cyclogenesis	JustMe	Thu Jul 03 2008 11:01 AM
Surprisingly Early Cape Verde Cyclogenesis	CoconutCandy	Thu Jul 03 2008 10:56 AM
Re: Watching Systems in the Eastern Caribbean and Far East Atlantic	cieldumort	Thu Jul 03 2008 04:27 AM
Re: Watching System in the Far East Atlantic	Random Chaos	Wed Jul 02 2008 11:27 PM
Re: Watching System in the Far East Atlantic	Hugh	Wed Jul 02 2008 10:00 PM
Re: Watching System in the Far East Atlantic	Random Chaos	Wed Jul 02 2008 07:40 PM
Re: Watching System in the Far East Atlantic	Lee-Delray	Wed Jul 02 2008 05:09 PM
Re: Watching System in the Far East Atlantic	Rich B	Wed Jul 02 2008 04:49 PM
Re: Watching System in the Far East Atlantic	cieldumort	Wed Jul 02 2008 04:38 PM

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