[Tropical] Tropical Cyclone Discussion
EMWIN Server
emwin at nashvilleweather.net
Wed Aug 9 15:41:48 CDT 2017
WTNT42 KNHC 092041
TCDAT2
Hurricane Franklin Discussion Number 13
NWS National Hurricane Center Miami FL AL072017
400 PM CDT Wed Aug 09 2017
Hurricane Hunter aircraft observations from earlier today indicated
that Franklin was very close to hurricane strength. Since the time
of the last mission, the system has become better organized, with a
faint eye occasionally making an appearance on visible satellite
images. Dvorak intensity estimates from both TAFB and SAB are 65
kt and this value will be used for the advisory intensity, making
Franklin the first hurricane of the season. There is some northerly
shear evident over the system and with several arc clouds evident
over the outer circulation's northwest quadrant, perhaps some dry
air is nearby. These environmental conditions are not expected to
be detrimental enough, however, to prevent at least some additional
strengthening before landfall tonight. An Air Force Hurricane
Hunter aircraft is scheduled to investigate Franklin a few hours
from now to check the strength of the cyclone.
The hurricane continues to move westward, with the initial motion
estimated to be 270/10. There are essentially no changes to the
track forecast or reasoning. The flow on the southern side of a
mid-level high pressure area near the Texas coast should continue
to steer Franklin towards, and across, the southwest Gulf coast of
Mexico. The official track forecast follows the latest dynamical
track model consensus.
FORECAST POSITIONS AND MAX WINDS
INIT 09/2100Z 20.1N 94.9W 65 KT 75 MPH
12H 10/0600Z 19.8N 96.6W 75 KT 85 MPH...INLAND
24H 10/1800Z 19.3N 99.5W 30 KT 35 MPH...INLAND
36H 11/0600Z...DISSIPATED
$$
Forecaster Pasch
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