Meteorological Calculator (Thanks to Ron Murphy, NWS Binghampton, NY and Bryan Ruby, NWS Sioux Falls, SD for writing some of these scripts.)

 Temperature Conversion Enter a number then click on the appropriate number to see the result. Fahrenheit (o F) Celsius (o C)

 Windchill Calculation Enter in the air temperature (Tair) in degrees Fahrenheit and wind speed in mph, then click on the Calculate WC to compute the windchill (WC). (Note: Wind Chill Temperature is only defined for temperatures at or below 50 degrees F and wind speeds above 3 mph.) Tair Wind(mph) New Wind Chill Index Old Wind Chill Index More information about the windchill equation.

 Relative Humidity Calculation Enter in the air temperature (Tair) and dew point temperature (Tdp) in degrees Fahrenheit (oF) then click on the Calculate RH to compute the relative humidity (RH). Tair Tdp

 Heat Index Calculation Enter in the air temperature (Tair) in degrees Fahrenheit and relative humidity (RH) in percent (without the % sign), then click on the Calculate HI to compute the heat index (HI). Tair RH Tdp= OR Tair Tdp RH= More information about the heat index equation.

 Wind Speed Conversion Enter a wind speed in the box below...then select "convert". Answers: mph mph knots knots m/s m/s ft/s ft/s km/h km/h

 Station Pressure Calculation What is the current altimeter (inches)? What is the station elevation? (feet)Tulsa=680 The Station Pressure in inches is: The Station Pressure in millibars is: The Pressure Altitude is (feet):