CHAPTER XVIII.
SEQUENCE OF LOCAL WEATHER CHANGES.
The next, and last, step in our study of the correlation of the various weather elements concerns the sequence of weather changes at a station before, during, and after the passage of a cyclone and of an anticyclone.
A. Cyclones.—I. Select some station which the weather maps show to have been directly on the track of a well-developed cyclone, i.e., to have been passed over by the center of the cyclone. Note the weather conditions at this station, before, during, and after the passage of the storm. Tabulate your observations according to the following scheme:—
Table V.
Weather Changes at ________________________ during ______________.
| Dates | Pressure | Temperature | Wind Direction | Wind Velocity | Weather | Direc. and Dist. of Storm Center |
In the last column of the table enter the direction and the distance of the cyclonic center from the station, at each observation.
II. Select a station which was north of the track of a cyclone, and tabulate (in a separate table) the weather conditions at that station before, during, and after the passage of the center.