What is pressure trend?

Question

I have this lab due in a couple days and I'm supposed to fill out the pressure trend (as talking about weather) for various days. What is it?

Answer 1

Pressure Trend shows the direction of change (higher, lower, steady) of the barometric pressure over the last three hours.

-. "Rising Rapidly" is indicated if the pressure increases > 2 mb

-. "Rising Slowly" is indicated if the pressure increases >1 mb but < 2 mb

-. "Steady" is indicated if the pressure changes < 1 mb

-. "Falling Slowly" is indicated if the pressure falls > 1 mb but < 2 mb

-. "Falling Rapidly" is indicated when the pressure decreases > 2 mb

there are specific guidelines that assign values to different pressure characteristics based on Official National Weather Service guidelines:

Pressure Falling Rapidly >> A decrease in station pressure at a rate of 0.06 inch of mercury or more per hour which totals 0.02 inch or more.

Pressure Rising Rapidly >> An increase in station pressure at a rate of 0.06 inch of mercury or more per hour which totals 0.02 inch or more.

Pressure Unsteady >> A pressure that fluctuates by 0.03 inch of mercury or more from the mean pressure during the period of measurement.

i hope this is what you want.