METEOROLOGY – EVERE WEATHER & TORM CALCULATOR
Significant Tornado Param
A precise tool.
What is the Significant Tornado Param & How does it work?
The Significant Tornado Parameter (STP) is a method used to estimate the potential for tornadoes in thunderstorms based on environmental conditions and storm structure. It combines several meteorological variables to provide a single index that can be used to assess the risk of severe weather.
STP = frac{left(0.93 times V_{updraft} – 16.4right) times left(SRH_{80km} + 260right)}{V_{max}} times 10^{-3}
STP = Significant Tornado Parameter, Vupdraft = Updraft velocity (m/s), SRH80km = Storm Relative Helicity in the lowest 80 km (m2/s2), Vmax = Maximum vertical wind shear (m/s)
The STP value helps meteorologists to quickly assess the potential for tornadoes in a given thunderstorm. A higher STP value indicates a greater likelihood of severe weather, including tornadoes.
Parameters
Result
—
Frequently Asked Questions
What is the formula for calculating STP?
The formula for STP is: STP = ((0.93 * V_updraft – 16.4) * (SRH_80km + 260)) / V_max * 10^-3.
What do the variables in the STP formula represent?
V_updraft is updraft velocity (m/s), SRH_80km is storm relative helicity at 80 km, and V_max is maximum wind speed.
How does STP help in predicting tornadoes?
STP combines environmental conditions and storm structure to estimate the potential for tornadoes, helping assess severe weather risk.
What is a typical range of values for STP?
STP values can vary widely, but higher values indicate a greater potential for severe weather, including tornadoes.
Can STP be used to predict the intensity of a tornado?
While STP indicates the potential for tornadoes, it does not directly predict their intensity. Other factors are also considered for intensity assessment.
Results are for informational purposes only and do not constitute professional advice.