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Archives >> 2008 News Talkbacks

danielwAdministrator
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Reged: Wed
Posts: 3502
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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Entire topic
Subject Posted by Posted on
* Tropical Storm Bertha Forms South of Cape Verde Islands MikeCAdministrator 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 danielwAdministrator   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? danielwAdministrator   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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