MONTH PACIFIC SST ATLANTIC SST GLOBAL
NINO 1+2

0-10S

90W-80W

NINO 3

5N-5S

150W-90W

NINO 3.4

5N-5S

170W-120W

NINO 4

5N-5S

160E-150W

N. ATL

5N-20N

60W-30W

S. ATL

0-20S

30W-10E

TROPICS

10N-10S

0W-360W

OCT 99 -0.5 20.1 -0.9 23.8 -0.8 25.6 -0.5 27.8 0.4 28.2 0.4 23.4 0.0 27.1
SEP 99 -1.0 19.2 -0.9 23.7 -0.7 25.7 -0.5 27.8 0.5 28.3 0.4 23.1 0.0 26.9
AUG 99 -0.9 19.8 -0.8 24.0 -1.1 25.6 -0.6 27.7 0.4 27.9 0.6 23.3 0.1 26.9
JUL 99 -1.0 20.5 -0.5 24.9 -0.6 26.3 -0.6 27.9 0.4 27.3 0.8 24.2 0.1 27.2
JUN 99 -0.8 21.8 -0.6 25.6 -0.8 26.6 -0.5 28.0 0.1 26.6 0.6 25.1 0.0 27.7
MAY 99 -0.5 23.5 -0.3 26.4 -0.6 27.0 -0.7 27.9 0.1 26.3 0.6 26.4 0.0 28.2
APR 99 -1.0 24.3 -0.6 26.7 -0.7 26.8 -1.0 27.4 0.0 25.8 0.6 27.2 0.0 28.2
MAR 99 -0.4 26.6 -0.2 26.7 -0.8 26.2 -1.2 26.9 0.0 25.5 0.3 27.0 0.1 28.1
FEB 99 -0.1 25.6 -0.6 25.6 -1.2 25.4 -1.5 26.5 -0.1 25.4 0.1 26.3 0.0 27.6
JAN 99 -0.5 23.7 -0.9 24.4 -1.5 24.9 -1.5 26.6 -0.1 25.8 0.0 25.3 0.0 27.3
DEC 98 0.1 22.6 -1.0 23.9 -1.6 24.8 -1.1 27.1 0.4 27.0 0.2 24.6 0.1 27.4
NOV 98 0.0 21.4 -0.6 24.1 -1.2 25.2 -1.0 27.2 0.5 27.9 0.5 24.1 0.3 27.6



TABLE T2 - Mean and anomalous sea surface temperature (C) for the most recent 12 months.