Ch. III · Frontology
Pressure trace & frontal passage
FIG. 03 / 12
Observation · Bergen School, 1924
Pressure falls
before
the front speaks.
Mean sea-level pressure
7-day trace, Station SN02 · 14–20 Oct 1924
hectopascals · hPa
1020
1015
1010
1005
1000
995
990
1018
1016
1013
1008
1002
1001
COLD-FRONT PASSAGE
994 hPa · −2.4 / 3h
14 OCT
15 OCT
16 OCT
17 OCT
18 OCT
19 OCT
20 OCT
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Synoptic Weather Map
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