Meteorology · Barometer — Tendency
A rapid fall of the barometer generally indicates:
- AImproving, settled weather
- BNo change
- CAn approaching low-pressure system and worsening weather, often with strong winds✓ Correct
- DA sea breeze
Explanation
A rapidly falling barometer warns of an intensifying or approaching low and increasing winds. The rate of change (barometric tendency), recorded over the past three hours, is as important as the value itself.
Authority: Bowditch (Pub. No. 9), pressure and weather
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