Rapid Intensification Guidance AL172020 200907 18UTC Storm Located at : 17.30 42.30 Guidance run with Vmax [kt]: 35. Initial Conditions: Predictor Value Favorable(F)/Unfavorable(U) INTENSITY (VMAX) [kt] 35.00 F 12-H DELTA VMAX [kt] 5.00 N CORE SIZE [km] 3.00 F CONVECTION <-50C [%] 45.00 N CONVECTION <-60C [%] 22.00 U IR CORE SYMMETRY [K] 8.10 F TC SIZE [%] 95.00 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] 12.6 21.4 21.7 19.6 24.8 32.3 40.5 39.4 F N N N N U U U Ocean Heat [kJ/cm^2] 6.0 6.0 7.0 8.0 8.0 6.0 8.0 13.0 U U U U U U U U Potential [kt] 105.5 105.5 107.4 107.4 107.4 111.5 120.1 124.6 N N N N N N N N 200mb Divg [10^6/s] 22.0 31.0 44.0 52.0 8.0 15.0 -13.0 7.0 U N N N U U U U Humidity 700-500 hPa 62.0 63.0 63.0 63.0 60.0 57.0 54.0 55.0 N N N N N U U U T Advectio [10^6 K/s] 0.0 1.0 1.0 5.0 5.0 4.0 -5.0 2.0 N N N N N N F N Probabilities[%] of Rapid intensification Thresholds LDA-Method LRE-Method CONSENSUS 20kt / 12h 0.8% 1.9% 1.3% 25kt / 24h 1.4% 8.6% 5.0% 30kt / 24h 0.6% 3.0% 1.8% 35kt / 24h 0.2% 3.0% 1.6% 40kt / 24h 0.1% 2.5% 1.3% 45kt / 36h 0.5% 12.0% 6.3% 55kt / 36h 0.5% 4.5% 2.5% 55kt / 48h 0.8% 0.8% 0.8% 70kt / 48h 0.8% 2.2% 1.5% 65kt / 72h 0.0% 1.7% 0.9% Decapatation Guidance NOT VALID Thermodyanmic Conditions Unfavorable for Intense Typhoons