Rapid Intensification Guidance AL172020 200915 18UTC Storm Located at : 38.80 56.50 Guidance run with Vmax [kt]: 85. Initial Conditions: Predictor Value Favorable(F)/Unfavorable(U) INTENSITY (VMAX) [kt] 85.00 N 12-H DELTA VMAX [kt] -5.00 U CORE SIZE [km] 2.20 F CONVECTION <-50C [%] 66.00 N CONVECTION <-60C [%] 29.00 U IR CORE SYMMETRY [K] 9.90 F TC SIZE [%] 135.00 U Forecast Conditions: Predictor Value Favorable(F)/Unfavor(U) 6 12 18 24 36 48 60 72 6 12 18 24 36 48 60 72 Wind Shear [kt] 57.3 62.4 69.2 73.5 62.1 27.8 26.6 31.1 VU VU VU VU VU N N U Ocean Heat [kJ/cm^2] 24.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 U U U U U U U U Potential [kt] 70.1 20.4 -9.6 -7.4 -21.8 -28.7 -21.8 -10.9 U VU VU VU VU VU VU VU 200mb Divg [10^6/s] 112.0 52.0 13.0 55.0 8.0 -4.0 -62.0 -26.0 F N U N U U VU VU Humidity 700-500 hPa 38.0 35.0 33.0 29.0 31.0 33.0 37.0 33.0 VU VU VU VU VU VU VU VU T Advectio [10^6 K/s] -35.0 -39.0 -72.0 -69.0 -34.0 -17.0 -8.0 -18.0 VF VF VF VF VF VF F VF Probabilities[%] of Rapid intensification Thresholds LDA-Method LRE-Method CONSENSUS 20kt / 12h 0.1% 0.0% 0.1% 25kt / 24h 0.0% 0.0% 0.0% 30kt / 24h 0.0% 0.0% 0.0% 35kt / 24h 0.0% 0.0% 0.0% 40kt / 24h 0.0% 0.0% 0.0% 45kt / 36h 0.0% 0.0% 0.0% 55kt / 36h 0.0% 0.0% 0.0% 55kt / 48h 0.0% 0.0% 0.0% 70kt / 48h 0.0% 0.0% 0.0% 65kt / 72h 0.0% 0.0% 0.0% Decapatation Guidance NOT VALID Thermodyanmic Conditions Unfavorable for Intense Typhoons