// Workers AI · dad joke modeWhat did the significant tornado parameter say? It was a twisting tale.
The Significant Tornado Parameter, often abbreviated as STP or SigTor,[1] is a composite index used by the Storm Prediction Center to highlight areas across the United States where multiple ingredients for the development of tornadic supercells overlap,[2][3][4][5] and the capability of potential tornadic supercells producing "significant" tornadoes of EF2 intensity or higher.[6] Values greater than 1 indicate an increased potential of significant tornadoes.[7]
Equation
[edit]The equation used to calculate the parameter is as follows:[8]
STP = MLCAPE/1500 J/Kg^-1 x 2000-mlLCL/1000 m x ESRH/150 m^2 s^-2 x EBWD/20 m/s^-1 x 200+mlCIN/150 J/Kg^-1
See also
[edit]References
[edit]- ↑ "Significant Tornado Parameter (STP)". NOAA. Retrieved 2025-04-21.
- ↑ Thompson, Rich. "EXPLANATION OF SPC SEVERE WEATHER PARAMETERS". Storm Prediction Center. Retrieved 2025-04-21.
- ↑ US Department of Commerce, NOAA. "Is tornado frequency increasing in parts of the U.S.?". National Weather Service. Retrieved 2025-04-21.
- ↑ "Significant Tornado Parameter (with CIN) Stats". National Weather Service. Retrieved 2025-04-21.
- ↑ "Forecasting severe convective storms". European Storm Forecast Experiment. Retrieved 2025-04-21.
- ↑ "Mid-Century Significant Hail and Tornado Potential". Guy Carpenter. Retrieved 2025-04-21.
- ↑ "Convective Parameters - SigTor". National Weather Service. Retrieved 2025-04-21.
- ↑ "Warning Methodology - Screen, Rank, Analyze, Decide (SRAD)" (PDF). National Weather Service. p. 9. Retrieved April 21, 2025.
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