Official Discussion issued by the National Hurricane Center

Rene (AL182020) DATA RELEASED: 9/8/2020 8:00:00 PM UTC

Copy of official data

Tropical Storm Rene Discussion Number   7
NWS National Hurricane Center Miami FL       AL182020
800 PM CVT Tue Sep 08 2020

Rene has not changed much throughout the day.  The storm is 
producing deep convection that is loosely organized in bands around 
the center.  The satellite intensity estimates are unchanged from 
earlier and range from 25 kt to 40 kt.  Based on these data and the 
earlier ASCAT pass, the initial intensity is again held at 35 kt. 
The eastern-most bands of Rene are now pulling west of the Cabo 
Verde Islands, and the Tropical Storm Warning for those islands has 
been discontinued.

Although Rene has struggled to maintain its intensity during the 
past 24 hours, the models insist that the cyclone will begin to 
take advantage of the generally conducive conditions of low wind 
shear, high moisture, and relatively warm waters.  Therefore, the 
NHC intensity forecast continues to show Rene strengthening to a 
hurricane in a couple of days. Beyond that time, however, Rene will 
likely be moving into an environment of strong westerly wind shear, 
which should cause the storm to weaken in the 3-5 day time period. 
This forecast is largely an update of the previous one and closely 
follows the IVCN model.

The tropical storm continues to move westward at 14 kt.  There has 
been no significant change to the track forecast reasoning.  A 
mid-level ridge should continue to steer Rene westward to 
west-northwestward for the next couple of days.  After that time, 
the storm should slow down and gradually turn to the north and then 
to the northeast as it moves into a weakness in the ridge.  There is 
a little less spread in the guidance this cycle, but there remain 
differences in the models concerning where and how sharply Rene 
recurves.  The NHC track forecast is similar to the previous one and 
lies close to the TVCA and TVCX consensus models.


INIT  08/2100Z 16.8N  27.9W   35 KT  40 MPH
12H  09/0600Z 17.2N  29.6W   40 KT  45 MPH
24H  09/1800Z 18.0N  32.2W   50 KT  60 MPH
36H  10/0600Z 18.9N  34.8W   60 KT  70 MPH
48H  10/1800Z 19.9N  37.0W   65 KT  75 MPH
60H  11/0600Z 21.3N  38.8W   70 KT  80 MPH
72H  11/1800Z 23.2N  40.3W   65 KT  75 MPH
96H  12/1800Z 27.7N  42.2W   55 KT  65 MPH
120H  13/1800Z 30.5N  40.5W   50 KT  60 MPH

Forecaster Cangialosi