National Weather Service United States Department of Commerce

Storm System To Lift From The Southern U.S. To Great Lakes Over The Next Couple Of Days

A storm will develop, intensify and lift northward from the southern Plains to the Great Lakes over the next two days. The weather hazards of most concern today are severe thunderstorms with damaging winds, isolated large hail and tornadoes and heavy rain with possible flooding in the Lower Mississippi Valley and Mid South. Then on Thursday, a zone of heavy snow may fall in Iowa and Wisconsin. Read More >

Vapor Pressure

by Tim Brice and Todd Hall
 
 
Enter a temperature or a dewpoint or both:
Vapor Pressure
If you want the saturated vapor pressure enter the air temperature:  saturated vapor pressure:
  Fahrenheit Celsius Kelvin mb in of HG mm HG 
hPA kPA lbs per square in
If you want the actual vapor pressure enter the dewpoint:  actual vapor pressure:
  Fahrenheit Celsius Kelvin mb in of HG mm HG 
hPA kPA lbs per square in
If you enter both the air temperature and the dewpoint you'll get a bonus answer.  relative humidity - requires both temp and dewpoint
  %

 

What is the formula for the vapor pressure script?