Meteorology Calculator

 

Temperature Conversion

Celcius value is degrees Fahrenheit.

Fahrenheit value is degrees Celsius

Celsius value is degrees Kelvin


Pressure Conversion

Millibar value is inches of Mercury

Inches of Mercury value is millibars


Wind Speed Conversion

Knots value is miles per hour

Knots value is kilometers per hour

Kilometers per hour value is knots

Miles per hour value is knots


Severe Weather Calculations

Use your raw radiosonde output to fill in the blanks below.

500 mb temperature (degrees Celsius)
700 mb temperature (degrees Celsius)
700 mb dew point depression (degrees Celsius)
850 mb temperature (degrees Celsius)
850 mb dew point depression (degrees Celsius)

K Index Calculation

The K index ... is an indication of potential instability in the lower half of the atmosphere, availability of moisture in the boundary layer, and reduction of buoyancy through entrainment of dry air (near 700 mb). It is most usefull for forecasting thunderstorms in the absence of strong, lager-scale forcing.

Bluestein, Synoptic-Dynamic Meteorology in Midlatitudes, Vol II, p. 448

The K Index is

Total-Totals Index

...Values in excess of 50 are considered to be associated with very intense convection. The total-totals index does not require the computation of the dry- or moist-adiabatic lapse rates, and humidity.

Bluestein, Synoptic-Dynamic Meteorology in Midlatitudes, Vol II, p. 447

The Total-Totals Index is