From: Comprehensive study of thunderstorm indices threshold favorable for thunderstorms during monsoon season using WRF–ARW model and ERA5 over India
Observation (yes)
Observation (no)
Total
Forecast (Yes)
Hits (YY)
False Alarm (YN)
YY + YN
Forecast (No)
Misses (NY)
Correct (NN)
NY + NN
YY + NN
YN + NN
T = YY + YN + NY + NN