Page:Weather Facts and Predictions.djvu/12

 weather, the barometer progressively rises, a succession of fine weather may be looked for.

The greatest depression of the barometer is with gales from about the S.W.; the greatest elevation with wind from about the N.E., or with calmness.

Although the barometer generally falls with a Southerly wind and rises with a Northerly wind, yet the contrary sometimes occurs, in which cases the Southerly wind is dry and the weather fine, and the N. wet and the weather inclement. But sometimes a high barometer (30.2 or so) may be accompanied by heavy rains with a S.W. wind.

When the barometer sinks considerably, high wind, rain, or snow, will follow; the wind will be from the N. if the temperature is, for the season, low; from the S. if the temperature is high.

Sudden falls of the barometer with a W. wind are sometimes followed by violent storms from the N.W., N., or N.E.

If a gale sets in from the E. or S.E., and the wind veers by S., the barometer will continue falling until the wind is near a marked change, when a lull may occur; after which the gale will soon be renewed, perhaps suddenly and violently, and the veering of the wind towards the N.W., N., or N.E., will be indicated by a rise in the barometer, accompanied by a fall in the thermometer.

The wind usually veers with the sun (right-handed in N. latitudes, left-handed in S. latitudes); when it does not do so, but backs, more wind or bad weather may be expected.

The barometer sometimes begins to rise