Rapid Intensification Guidance AL172023 230923 12UTC Storm Located at : 15.60 38.10 Guidance run with Vmax [kt]: 30. Initial Conditions: Predictor Value Favorable(F)/Unfavorable(U) INTENSITY (VMAX) [kt] 30.00 F 12-H DELTA VMAX [kt] 5.00 N CORE SIZE [km] 3.80 F CONVECTION <-50C [%] 32.00 U CONVECTION <-60C [%] 16.00 U IR CORE SYMMETRY [K] 8.20 F TC SIZE [%] 103.00 N 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] 15.4 13.5 12.6 15.3 18.8 26.8 29.8 35.4 F F F F N N N U Ocean Heat [kJ/cm^2] 32.0 40.0 57.0 49.0 38.0 35.0 70.0 54.0 U N N N U U N N Potential [kt] 110.5 112.4 112.4 114.4 116.5 116.5 118.6 120.7 N N N N N N N N 200mb Divg [10^6/s] 30.0 40.0 67.0 29.0 77.0 67.0 93.0 39.0 N N N N N N F N Humidity 700-500 hPa 57.0 57.0 57.0 57.0 60.0 61.0 63.0 69.0 U U U U N N N N T Advectio [10^6 K/s] -1.0 -1.0 0.0 -1.0 -2.0 -3.0 -8.0 -6.0 N N N N N N F F Probabilities[%] of Rapid intensification Thresholds LDA-Method LRE-Method CONSENSUS 20kt / 12h 0.8% 1.7% 1.3% 25kt / 24h 3.7% 13.4% 8.5% 30kt / 24h 1.7% 5.6% 3.6% 35kt / 24h 0.6% 4.6% 2.6% 40kt / 24h 0.3% 4.6% 2.5% 45kt / 36h 4.9% 28.1% 16.5% 55kt / 36h 0.0% 12.6% 6.3% 55kt / 48h 21.5% 21.5% 21.5% 70kt / 48h 21.5% 9.6% 15.6% 65kt / 72h 28.8% 15.8% 22.3% Decapatation Guidance NOT VALID Thermodyanmic Conditions Unfavorable for Intense Typhoons Convective Decapatation Guidance For SSTs greater than 27.5C Current sst along the future track = 27.38 AL172023 230923 12UTC Storm Located at : 15.60 38.10 Guidance run with Vmax [kt]: 30.