Surface Analysis / Chapter 03
Northern Sector Pressure Study
Page 04
Verified pattern
Pressure gradients decide the wind before the forecast does.
Pressure gradient index vs verified wind advisories
Forty-eight synoptic events, 12-hour lead window
H
1008
L
992
40
55
70
85
FEB
MAR
APR
MAY
JUN
JUL
AUG
AUG PEAK: 86.4%
warm sector lag
SEA 48N 122W
SLP fall: 9.7 mb / 12 hr
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Synoptic Weather Chart
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