per clark comments:

URNT12 KNHC 281521
VORTEX DATA MESSAGE
A. 28/15:00:20Z
B. 26 deg 06 min N
088 deg 06 min W
C. 700 mb 2289 m
D. NA kt
E. deg nm
F. 089 deg 154 kt
G. 002 deg 018 nm
H. 907 mb
I. 11 C/ 3044 m
J. 27 C/ 3006 m
K. 7 C/ NA
L. CLOSED WALL
M. C22
N. 12345/ 7
O. 1 / 1 nm
P. AF302 1712A KATRINA OB 26
MAX FL WIND 166 KTS NE QUAD 1422Z. TEXTBOOK RADAR PRESENTATION AND STADIUM EFFECT . SURFACE CENTER VISIBLE AND SLIGHTLY DISPLACED FROM FL CENTER.

could it be a sign of a more northerly turn is imminent? (within 6-12hrs)