Arlene's wind speed continues to increase.
RECON is flying at about 1,000 feet and recently found a wind speed (From the E at ~ 56.3 mph).

Data courtesy USAF Reserve Hurricane Hunters and tropicalatlantic.com

URNT12 KNHC 291258
VORTEX DATA MESSAGE AL012011
A. 29/12:30:00Z
B. 21 deg 19 min N
095 deg 22 min W
C. NA
D. 35 kt
E. 041 deg 90 nm
F. 101 deg 46 kt
G. 043 deg 138 nm
H. EXTRAP 1000 mb
I. 22 C / 350 m
J. 24 C / 450 m
K. 23 C / NA
L. NA
M. NA
N. 1345 / 01
O. 0.02 / 12 nm
P. AF308 0201A ARLENE OB 06
MAX FL WIND 46 KT NE QUAD 11:42:30Z
SLP EXTRAP FROM BELOW 1500 FT
L/V DIAMETER OF CENTER 24NM