* GFS version * * ATLANTIC 2024 SHIPS INTENSITY FORECAST * * IR SAT DATA AVAILABLE, OHC AVAILABLE * * EIGHT AL082024 09/16/24 18 UTC * TIME (HR) 0 6 12 18 24 36 48 60 72 84 96 108 120 132 144 156 168 V (KT) NO LAND 35 34 34 33 31 31 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A V (KT) LAND 35 30 29 28 27 27 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A V (KT) LGEM 35 29 28 28 27 27 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A Storm Type TROP EXTP EXTP TROP TROP EXTP N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A SHEAR (KT) 29 30 21 10 16 14 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A SHEAR ADJ (KT) 0 -2 -5 -1 -4 -7 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A SHEAR DIR 225 229 240 218 208 286 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A SST (C) 26.4 26.0 26.4 26.7 26.8 26.8 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A POT. INT. (KT) 116 111 115 118 120 120 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 200 MB T (C) -52.4 -52.8 -52.8 -52.8 -52.8 -52.9 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 200 MB VXT (C) -0.1 0.2 0.3 0.1 0.6 1.5 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A TH_E DEV (C) 4 2 1 1 4 1 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 700-500 MB RH 55 57 59 62 65 61 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A MODEL VTX (KT) 15 16 16 15 11 8 LOST LOST LOST LOST LOST LOST LOST LOST LOST LOST LOST 850 MB ENV VOR 56 57 40 49 47 22 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 200 MB DIV 41 35 18 4 27 31 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 700-850 TADV 20 25 23 10 16 2 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A LAND (KM) 47 -6 -59 -105 -151 -272 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A LAT (DEG N) 33.4 33.8 34.1 34.4 34.7 35.5 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A LONG(DEG W) 78.5 78.9 79.3 79.6 80.0 80.9 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A STM SPEED (KT) 5 5 4 4 5 5 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A HEAT CONTENT 2 1 2 1 1 1 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A FORECAST TRACK FROM OFCI INITIAL HEADING/SPEED (DEG/KT):335/ 6 CX,CY: -2/ 5 T-12 MAX WIND: 45 PRESSURE OF STEERING LEVEL (MB): 674 (MEAN=620) GOES IR BRIGHTNESS TEMP. STD DEV. 50-200 KM RAD: 21.0 (MEAN=14.5) % GOES IR PIXELS WITH T < -20 C 50-200 KM RAD: 28.0 (MEAN=65.0) PRELIM RI PROB (DV .GE. 35 KT IN 36 HR): 0.0 INDIVIDUAL CONTRIBUTIONS TO INTENSITY CHANGE 6 12 18 24 36 48 60 72 84 96 108 120 132 144 156 168 -------------------------------------------------------------------------------------------- SAMPLE MEAN CHANGE 1. 2. 3. 4. 6. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. SST POTENTIAL -0. -0. -1. -1. -1. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. VERTICAL SHEAR MAG 1. 3. 4. 5. 6. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. VERTICAL SHEAR ADJ 0. 0. 1. 1. 3. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. VERTICAL SHEAR DIR 0. 0. 1. 1. 2. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. PERSISTENCE -2. -3. -4. -4. -2. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 200/250 MB TEMP. -0. -1. -1. -1. -1. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. THETA_E EXCESS -0. -1. -1. -2. -3. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 700-500 MB RH -0. -0. -0. -0. -1. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. MODEL VTX TENDENCY 0. 0. -1. -4. -8. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 850 MB ENV VORTICITY 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 200 MB DIVERGENCE 0. -0. -0. -0. -0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 850-700 T ADVEC -0. 0. 0. 0. 1. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. ZONAL STORM MOTION 0. 0. -0. -0. -0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. STEERING LEVEL PRES -0. -0. -0. -0. -1. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. DAYS FROM CLIM. PEAK -0. -0. -0. -0. -0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. GOES PREDICTORS -1. -1. -1. -1. -1. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. OCEAN HEAT CONTENT 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. RI POTENTIAL -0. -1. -2. -3. -4. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. -------------------------------------------------------------------------------------------- TOTAL CHANGE -1. -1. -2. -4. -4. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. CURRENT MAX WIND (KT): 35. LAT, LON: 33.4 78.5 ** 2024 ATLANTIC RI INDEX AL082024 EIGHT 09/16/24 18 UTC ** (SHIPS-RII PREDICTOR TABLE for 30 KT OR MORE MAXIMUM WIND INCREASE IN NEXT 24-h) Predictor Value RI Predictor Range Scaled Value(0-1) % Contribution 12 HR PERSISTENCE (KT) : -10.0 -49.5 to 33.0 0.48 1.9 MULTI-LAYER SHEAR (KT) : 26.8 46.9 to 6.8 0.50 1.0 HEAT CONTENT (KJ/CM2) : 1.4 0.0 to 155.1 0.01 0.0 STD DEV OF IR BR TEMP : 21.0 36.6 to 2.8 0.46 0.7 MAXIMUM WIND (KT) : 35.0 22.5 to 137.5 0.33 0.3 2nd PC OF IR BR TEMP : -0.2 2.9 to -3.0 0.53 0.5 BL DRY-AIR FLUX (W/M2) : 119.6 895.4 to -69.3 0.80 0.7 D200 (10**7s-1) : 25.0 -29.7 to 189.2 0.25 0.2 POT = MPI-VMAX (KT) : 60.5 27.0 to 143.0 0.29 0.1 %area of TPW <45 mm upshear : 76.4 109.2 to 0.0 0.30 -0.0 SHIPS Prob RI for 20kt/ 12hr RI threshold= 1% is 0.2 times climatological mean ( 4.9%) SHIPS Prob RI for 25kt/ 24hr RI threshold= 8% is 0.8 times climatological mean (10.9%) SHIPS Prob RI for 30kt/ 24hr RI threshold= 5% is 0.8 times climatological mean ( 6.8%) SHIPS Prob RI for 35kt/ 24hr RI threshold= 4% is 0.9 times climatological mean ( 3.9%) SHIPS Prob RI for 40kt/ 24hr RI threshold= 0% is 0.0 times climatological mean ( 2.4%) SHIPS Prob RI for 45kt/ 36hr RI threshold= 0% is 0.0 times climatological mean ( 4.6%) SHIPS Prob RI for 55kt/ 48hr RI threshold= 0% is 0.0 times climatological mean ( 4.7%) SHIPS Prob RI for 65kt/ 72hr RI threshold= 0% is 0.0 times climatological mean ( 5.3%) Matrix of RI probabilities ------------------------------------------------------------------------------ RI (kt / h) | 20/12 | 25/24 | 30/24 | 35/24 | 40/24 | 45/36 | 55/48 |65/72 ------------------------------------------------------------------------------ SHIPS-RII: 1.2% 8.2% 5.4% 3.7% 0.0% 0.0% 0.0% 0.0% Logistic: 0.4% 0.8% 0.4% 0.1% 0.0% 0.2% 0.1% 0.0% Bayesian: 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% Consensus: 0.5% 3.0% 2.0% 1.2% 0.0% 0.1% 0.0% 0.0% DTOPS: 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% SDCON: .2% 1.5% 1.0% .6% 0% 0% 0% 0% ## ANNULAR HURRICANE INDEX (AHI) AL082024 EIGHT 09/16/24 18 UTC ## ## STORM NOT ANNULAR, SCREENING STEP FAILED, NPASS=4 NFAIL=3 ## ## AHI= 0 (AHI OF 100 IS BEST FIT TO ANN. STRUC., 1 IS MARGINAL, 0 IS NOT ANNULAR) ## ** PROBLTY OF AT LEAST 1 SCNDRY EYEWL FORMTN EVENT AL082024 EIGHT 09/16/2024 18 UTC ** TIME(HR) 0-12 12-24(0-24) 24-36(0-36) 36-48(0-48) CLIMO(%) 0 0( 0) 0( 0) 0( 0) <-- PROB BASED ON INTENSITY ONLY PROB(%) 0 0( 0) 0( 0) 0( 0) <-- FULL MODEL PROB (RAN NORMALLY) ** DSHIPS INTENSITY FORECAST ADJUSTED RELATIVE TO ONSET OF ERC WEAKENING PHASE ** TIME (HR) 0 6 12 18 24 36 48 60 72 84 96 108 120 132 144 156 168 >24HR AGO (DSHIPS) 35 30 29 28 27 27 DIS DIS DIS DIS DIS DIS DIS DIS DIS DIS DIS 18HR AGO 35 34 33 32 31 31 DIS DIS DIS DIS DIS DIS DIS DIS DIS DIS DIS 12HR AGO 35 32 31 30 29 29 DIS DIS DIS DIS DIS DIS DIS DIS DIS DIS DIS 6HR AGO 35 29 26 25 24 24 DIS DIS DIS DIS DIS DIS DIS DIS DIS DIS DIS NOW CURRENT INTENSITY < 83 KT IN 6HR INTENSITY IN 6HR < 83 KT IN 12HR INTENSITY IN 12HR < 83 KT