When your barometer reading changes from...

When your barometer reading changes from...

Question 1 / 2707066636ee928f7522a1c5191e9

Question 1 of 2707066636ee928f7522a1c5191e9

When your barometer reading changes from 30.25 to 30.05 in a 12-hour period it indicates __________.

Question 1 of 27070

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Q

When your barometer reading changes from 30.25 to 30.05 in a 12-hour period it indicates __________.

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🔍 Key Concepts

• Relationship between barometric pressure trends and approaching or leaving weather systems • Difference between a rapid pressure drop and a slow, steady fall • Typical rate of pressure change that signals rapidly changing weather vs. relatively stable conditions

💭 Think About

• How large is the total pressure change in inches of mercury, and over how many hours did it occur? • Would this rate of change usually be considered fast, moderate, or slow for barometric pressure? • What kind of pressure trend usually precedes storms or high winds, and is that trend present here?

✅ Before You Answer

• Calculate the exact pressure difference between 30.25 and 30.05 inches of mercury • Divide that difference by 12 hours to find the rate of change per hour • Compare that rate to what you would expect for rapidly changing vs. slowly changing weather patterns