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Hurricane JOSE (Text)


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Hurricane Jose Discussion Number  44
NWS National Hurricane Center Miami FL       AL122017
500 AM EDT Sat Sep 16 2017

NOAA buoy 41047 has been very helpful in determining the position
and central pressure of Jose this morning.  The center of Jose
passed just north of the buoy around 0500 UTC, and a surface
pressure of 986 mb with 20-30 kt of winds was measured.  Since  the
buoy did not sample the stronger northeast quadrant of the storm,
the initial intensity has been held at 70 kt.  Another
reconnaissance flight later today will provide a better estimate of
the max winds.

There is some indication of northeasterly shear inhibiting the
outflow of Jose, which is restricted in the northwest quadrant.
Since it appears to be negatively affecting the cyclone, the shear
may inhibit any more substantial intensification. The intensity
guidance is a little lower than before, so the new NHC forecast has
been lowered slightly, and is now close to the intensity consensus
throughout the forecast.

Jose has moved just a little to the southwest of the expected track,
and the initial motion remains 305/8 kt.  However, Jose is still
expected to begin turning toward the north later today, so no
significant changes were needed for the early part of the forecast.
More importantly, the GFS and ECMWF have met in the middle of their
previous solutions, and have come into much better agreement on the
forward speed of the hurricane beyond day 2.  The new track forecast
is very close to a 50/50 blend of the GFS and ECMWF.  Although
confidence in the track forecast is a little higher due to the model
agreement, it is still important to note that the average NHC track
errors at days 4 and 5 are about 175 and 225 miles, respectively.

While the official track forecast keeps the center of Jose offshore
for the next few days, all of the global models show the hurricane
becoming rather large by late this weekend as it moves to the east
of North Carolina.  For that reason, a tropical storm watch may be
needed for a portion of the North Carolina coast later today.

KEY MESSAGES:

1. Swells generated by Jose are affecting Bermuda, the Bahamas, the
northern coasts of Hispaniola and Puerto Rico, and the southeast
coast of the United States, and will spread northward, reaching the
mid-Atlantic coast and the coast of southern New England during the
next few days.  These swells are likely to cause dangerous surf and
rip current conditions.

2. Although the center of Jose is forecast to pass well east of the
North Carolina coast early next week, tropical-storm-force winds are
expected to extend well west of the center and could approach the
North Carolina Outer Banks on Monday.  Farther north along the U.S.
east coast, the chance of some direct impacts from Jose is
increasing, but it is too soon to determine their exact magnitude
and location.  Interests along the U.S. east coast from North
Carolina to New England should monitor the progress of Jose through
the weekend.


FORECAST POSITIONS AND MAX WINDS

INIT  16/0900Z 27.9N  71.8W   70 KT  80 MPH
 12H  16/1800Z 28.6N  72.5W   75 KT  85 MPH
 24H  17/0600Z 29.7N  72.5W   75 KT  85 MPH
 36H  17/1800Z 31.2N  72.2W   75 KT  85 MPH
 48H  18/0600Z 32.9N  72.1W   75 KT  85 MPH
 72H  19/0600Z 35.8N  71.8W   65 KT  75 MPH
 96H  20/0600Z 39.5N  70.5W   60 KT  70 MPH
120H  21/0600Z 41.0N  66.5W   50 KT  60 MPH

$$
Forecaster Zelinsky

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Page last modified: Thursday, 19-Oct-2017 12:09:30 UTC