National Weather Service United States Department of Commerce

Severe Storms and Flash Flooding in the Southern Plains

A slow moving storm system is expected to produce a multi-day heavy rainfall and flash flooding event across much of the Central to Southern Plains and Lower Mississippi Valley regions. Severe weather may produce large hail and high winds, but also a threat of tornadoes, across Texas and spreading on Wednesday into the Lower Mississippi, Tennessee and Ohio Valleys. Read More >

Density Altitude

by Tim Brice and Todd Hall

 

 
 
 
Enter the air temperature and choose a unit: Density Altitude in feet:
Fahrenheit Celsius Kelvin ft
Enter the actual station pressure (not the altimeter setting) and choose a unit: Density Altitude in meters:
in of mercury mm of mercury millibars (hPA) m
Enter the dewpoint and choose a unit:  
Fahrenheit Celsius Kelvin  

 

What is the formula for the density altitude script?