December
100
1009.5
Calm
1052.2
80
1008.5
1003.1
N
998.9
1004.2
NE
954.8
18,116
60
1006.3
E
1002.9
SE
40
1000.6
S
1003.7
SW
1002.6
20
W
1002.5
NW
0
100
1005.5
Calm
1051.3
80
1008.1
1003.4
N
998.2
1003.8
NE
953.9
17,663
60
1001.9
E
998.2
SE
40
997.6
S
996.5
SW
1002.6
20
W
1001.3
NW
0
100
1001.0
Calm
1050.0
80
1006.9
1003.4
N
997.4
1003.7
NE
949.5
15,999
60
999.9
E
1001.1
SE
40
1002.7
S
998.7
SW
1000.0
20
W
1002.4
NW
0
100
1000.7
Calm
1049.1
80
1005.5
1000.1
N
995.2
993.8
NE
951.8
17,778
60
999.2
E
1001.4
SE
40
1001.9
S
1001.5
SW
1004.1
20
W
999.9
NW
0
960
980
1000
1020
1040
1060
60
50
40
30
20
10
0
Sea Level Pressure (mb)
137