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Tuesday, September 27, 2016

In our tropical kitchen this morning we have tropical storm Roslyn that is starting to wind down SW of the cape this morning.  She is around 800 miles SW of the cape and the models are not showing any more of these spin-offs that brought rain to the peninsula yesterday.  But they again are only models, best bet… take a look around.

Tropical waves:  one just left the African coast, one in mid Atlantic, one is passing over Cuba this morning and one has just entered the Eastern Pacific basin around Guatemala

 

 

 

Tropical Archives

2014

2015

 
 

 

2016 Tropical Storms

Click on a storm name for details and graphics

Agatha

TS

6/1-6/5

Blas

Cat 3

6/3-6/7

 

Celia

Cat 1

7-9-7/15

 

 

Darby

Cat 2

7/13-7/21

 

 

Estelle

TS

7/16-7/23

 

Frank

Cat 1

7/22-7/28-

 

 

 

Georgette

cat 3

7/23-7/27

 

 

Howard

TS

08/01-08/04

 

Ivette

TS

08/02-08/08

 

Javier

TS

08/08-08/11

 

 

Kay

TS

08/19-8/23

 

Lester

Cat 4

08/25-9/3

 

Madeline

Cat 4

8/27-9/1

 

Newton

Cat 1

09/5-

 

Orlene

Cat 2

09/11-

 

Pains

TS

9/19-9/22

 

 

Roslyn

TS

9/20-

 

Saymor

 

Tina

 

Virgil

  Winffred   Xavier   Yolanda  

 

Zeke

 

 

Invest 93 Echo Soon to be Tropical Storm Pains

 


 

Animated GIF Floater when available

 
 

 

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What is a Tropical wave and where do they come from?
Normally a tropical wave starts off as a sand storm in the Sahara Desert. Especially in the summer months there is a significant temperature gradient between the hot desert and the cooler waters along the Gulf of Guinea Coast.  So this hot, dust and sand filled wind starts moving west and developing into a trough of low. The wave, now bow shaped, is now being transported by the African Eastern Jet which moves east west across the Atlantic. 
A new tropical wave departs western North Africa about every 2-4 days between April and November, with about 60-65 waves per year, on average.
In the Atlantic 85% of all their major hurricanes have their origins traceable to these African waves and about 60% of all tropical storm and cat 1-2 hurricanes are spawned by these waves. 
Those that make it across the Atlantic and the Caribbean without tropical development (a tropical storm or hurricane) normally cross Central America and end up in the Eastern Pacific basin where they looking for a low to stimulate in the waters warmer than 80 degrees.