Surface Trough with weak low 1011 mb

[Gustywind]

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
805 AM EDT FRI AUG 23 2013

...ITCZ/MONSOON TROUGH...


A SURFACE TROUGH IS ANALYZED NORTH OF THE MONSOON TROUGH AXIS FROM 14N32W
TO 19N39W WITH A WEAK 1011 MB LOW CENTERED ALONG THE AXIS NEAR
17N36W. THIS IS LIKELY ANOTHER IMPULSE OF WESTWARD MOVING ENERGY
OR PERHAPS A TROPICAL WAVE THAT MOVED OFF OF AFRICA EARLIER IN
THE WEEK. LOW-LEVEL CYCLONIC MOTION IS NOTED IN THE CLOUD FIELD
SURROUNDING THE SURFACE LOW WITH ISOLATED MODERATE CONVECTION
OCCURRING FROM 16N-18N BETWEEN 34W-38W.

[floridasun78]

their add that low to map http://oi43.tinypic.com/2ufgi8y.jpg only thing kill it dry air still out their

[Hurricane_Luis]

T-wave Around 38W, 16N. And oh look another SAL surge.

[hurricanekid416]

Sorry off topic for an amateur question but what's the difference between a surface trough and a tropical wave

[USTropics]

Sorry off topic for an amateur question but what's the difference between a surface trough and a tropical wave

Generally speaking an easterly wave (tropical wave) is a weak trough of low pressure. Troughs are also associated with fronts or even an extended line between two low pressure centers. The difference is the origination.

[northjaxpro]

Yeah, that is a very significant SAL surge coming off the African coast. That will likely put the lid on anything developing out there anytime soon.

[hurricanekid416]

Sorry off topic for an amateur question but what's the difference between a surface trough and a tropical wave

Generally speaking an easterly wave (tropical wave) is a weak trough of low pressure. Troughs are also associated with fronts or even an extended line between two low pressure centers. The difference is the origination.

Thanks

[Gustywind]

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
805 PM EDT FRI AUG 23 2013




...ITCZ/MONSOON TROUGH...
A 1014 MB LOW IS CENTERED NEAR 15N38W WITH ISOLATED SHOWERS POSSIBLE WITHIN 175
NM OF THE LOW. SCATTERED MODERATE/STRONG CONVECTION IS WITHIN 60
NM OF LINE FROM 11N25W TO 12N28W. CLUSTERS OF SCATTERED
MODERATE/ISOLATED STRONG CONVECTION ARE FROM 8N-11N BETWEEN 25W-
41W AND FROM 5N-10N BETWEEN 42W-50W.

[AtlanticWind]

http://www.ssd.noaa.gov/goes/east/catl/flash-rb.html

This small low is now near 50 w and firing some convection

[AtlanticWind]

A 1012 MB LOW IS CENTERED NEAR 12N47W WITH SCATTERED
MODERATE/ISOLATED STRONG CONVECTION FROM 11N-13N BETWEEN 47W-
50W.

[colbroe]

This system is looking better as the hours pass by ,so it must be given some attention.

[tailgater]

Yes the west Indies look to have a busy month or so coming up if the pattern remains this way over the Centeral Atlantic

[ROCK]

This system is looking better as the hours pass by ,so it must be given some attention.

yep...it has a low level swirl to it that has fired convection right over top of it. We need to watch it...not much model support though...

[Gustywind]

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
805 PM EDT SUN AUG 25 2013



A 1008 MB LOW IS CENTERED NEAR 11N48W WITH SCATTERED MODERATE CONVECTION FROM 10N-12N BETWEEN 48W-51W.

[northtxboy]

Pressures are falling

[northjaxpro]

This system has apparently been able to fight off the SAL surge which came off the African coast a couple of days ago. It does appear convection is firing very close to where the LLC is and NHC currently analyzes this already at 1008 mb. That is rather low actually and that pressure can support a TS. Should this current trend continue, I can't see why NHC wouldn't elaborate more on this in the next TWO later at 2 a.m.

[gatorcane]

I see we don't have an image posted of the area lately. Here is an image below where I circled the area being discussed:

[abajan]

Definitely bears watching IMO. Associated convection was waning earlier but is now coming back. I'm very interested to see what the next TWO will say but I'll surely be deep in sleep when it comes out.

[Hurricaneman]

This could end up being one of those systems that forms without model support and by the looks of it it could be a small one

The posts in this forum are NOT official forecast and should not be used as such. They are just the opinion of the poster and may or may not be backed by sound meteorological data. They are NOT endorsed by any professional institution or storm2k.org. For official information, please refer to the NHC and NWS products

[NDG]

Very interesting little vorticity maintaining convection tonight.
I went back prior to the sun setting in the Atlantic and it appeared that it has a weak LLC by looking at the visible hr sat loop, could the models have missed this because is so small? We shall see.