[steveegg]

Fresh Vortex Data Message -

000
URNT12 KNHC 181340
VORTEX DATA MESSAGE AL042007
A. 18/13:23:30Z
B. 15 deg 28 min N
  068 deg 14 min W
C. NA  mb 2475 m
D. 102 kt
E. 122 deg 006 nm
F. 220 deg 117 kt
G. 125 deg 007 nm
H.        929  mb
I.  11 C/ 3046 m
J.  18 C/ 3045 m
K.  12 C/ NA
L. CLOSED
M. C12
N. 12345/7
O. 0.02 /  2 nm
P. AF304 0604A DEAN OB 09
MAX FL WIND 145 KT NE QUAD 11:48:40 Z
RADAR PRESENTATION EXCELLENT

Relevant changes over the last 1:32 (this should be the basis of the 11 am advisories):
- Pressure up 3 mb to 929 mb
- Motion 283 degrees (west) at just over 16 mph
- This was a SE-to-NW run, so the 145-knot flight-level wind in the NE quad holds.

[mutley]

- Pressure up 3 mb to 929 mb

I'm not real surprised. Dean looked a bit less symmetrical this morning. I'm going to guess it was because of two possible things. Perhaps it is some kind of re-organization going on, like an eyewall replacement, or because Dean is gaining on that upper level low near florida, and the stalled remnants of Erin, which are creating a slight weakness in the ridge, which Dean is feeling and is being influenced slightly.