Irma - Cat 4
Posted by CX on 9/4/2017, 3:07 pm
ATCF: AL, 11, 2017090418, , BEST, 0, 167N, 539W, 115, 944, HU,

Looks like as per this afternoon. RECON found 113 kt surface winds in the NE quad and FL of 121 kts.

Circular spiral eyewall presentation - 20 miles. And an 8C temp diff inside eye, which is her highest yet. 944 mb pressure also lowest yet. She's managed to intensify during her EWRC, similar to Harvey.

000
URNT12 KNHC 041859
VORTEX DATA MESSAGE   AL112017
A. 04/18:36:10Z
B. 16 deg 43 min N
 054 deg 01 min W
C. 700 mb 2611 m
D. 113 kt
E. 056 deg 16 nm
F. 141 deg 121 kt
G. 054 deg 21 nm
H. 944 mb
I. 8 C / 3047 m
J. 16 C / 3051 m
K. 13 C / NA
L. SPIRAL
M. C20
N. 12345 / 07
O. 0.02 / 1 nm
P. AF309 0311A IRMA               OB 12
MAX FL WIND 121 KT 054 / 21 NM 18:29:00Z
CNTR DROPSONDE SFC WIND 200 / 6 KT
;
206
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Irma - Cat 4 - CX, 9/4/2017, 3:07 pm
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