* GFS version * * ATLANTIC 2023 SHIPS INTENSITY FORECAST * * IR SAT DATA AVAILABLE, OHC AVAILABLE * * RINA AL182023 09/30/23 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 40 37 35 31 28 24 21 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A V (KT) LAND 40 37 35 31 28 24 21 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A V (KT) LGEM 40 37 33 30 27 23 21 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A Storm Type TROP TROP TROP TROP TROP TROP TROP N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A SHEAR (KT) 48 48 38 27 24 21 15 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A SHEAR ADJ (KT) 2 2 6 10 4 1 2 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A SHEAR DIR 304 300 303 300 297 289 246 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A SST (C) 28.9 28.9 28.8 29.0 28.8 28.8 29.0 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A POT. INT. (KT) 151 151 149 152 149 149 152 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 200 MB T (C) -52.7 -52.4 -52.8 -53.3 -53.2 -53.1 -52.8 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 200 MB VXT (C) 0.7 0.6 0.4 0.3 0.1 -0.3 -0.1 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A TH_E DEV (C) 7 7 7 7 8 8 8 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 700-500 MB RH 61 60 63 62 60 62 60 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A MODEL VTX (KT) 13 13 12 8 7 6 5 LOST LOST LOST LOST LOST LOST LOST LOST LOST LOST 850 MB ENV VOR 21 24 31 16 -5 -11 -12 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 200 MB DIV 20 -12 -21 -14 11 31 72 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 700-850 TADV -15 -28 -20 -10 -2 0 14 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A LAND (KM) 1227 1171 1127 1100 1086 1161 1347 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A LAT (DEG N) 22.1 22.8 23.5 24.2 24.9 26.6 28.8 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A LONG(DEG W) 51.0 52.0 52.9 53.8 54.7 55.9 56.4 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A STM SPEED (KT) 12 11 11 11 10 10 11 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A HEAT CONTENT 34 42 48 41 38 28 32 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):310/ 12 CX,CY: -8/ 8 T-12 MAX WIND: 45 PRESSURE OF STEERING LEVEL (MB): 786 (MEAN=620) GOES IR BRIGHTNESS TEMP. STD DEV. 50-200 KM RAD: 7.6 (MEAN=14.5) % GOES IR PIXELS WITH T < -20 C 50-200 KM RAD: 0.0 (MEAN=65.0) PRELIM RI PROB (DV .GE. 35 KT IN 36 HR): 1.2 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. 7. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. SST POTENTIAL 1. 1. 2. 2. 4. 6. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. VERTICAL SHEAR MAG -1. -1. -2. -2. -3. -5. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. VERTICAL SHEAR ADJ -0. -0. -1. -1. -2. -2. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. VERTICAL SHEAR DIR -0. -0. -0. -0. -0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. PERSISTENCE -1. -2. -2. -2. -1. -1. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 200/250 MB TEMP. -0. -0. -1. -1. -1. -1. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. THETA_E EXCESS -0. -0. -0. -0. -0. -1. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 700-500 MB RH -0. -0. -0. -0. -1. -2. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. MODEL VTX TENDENCY -0. -1. -3. -5. -7. -11. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 850 MB ENV VORTICITY -0. -0. -0. -0. -0. -1. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 200 MB DIVERGENCE -0. -0. -1. -1. -1. -0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 850-700 T ADVEC 0. -0. -0. -1. -1. -1. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. ZONAL STORM MOTION -0. 0. 0. 0. 1. 1. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. STEERING LEVEL PRES -0. -1. -1. -1. -2. -1. 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. -2. -4. 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. -2. -4. -3. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. -------------------------------------------------------------------------------------------- TOTAL CHANGE -3. -5. -9. -12. -16. -19. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. CURRENT MAX WIND (KT): 40. LAT, LON: 22.1 51.0 ** 2023 ATLANTIC RI INDEX AL182023 RINA 09/30/23 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) : -5.0 -49.5 to 33.0 0.54 999.0 MULTI-LAYER SHEAR (KT) : 51.7 45.1 to 6.7 0.00 0.0 HEAT CONTENT (KJ/CM2) : 40.6 0.0 to 161.7 0.25 999.0 STD DEV OF IR BR TEMP : 7.6 36.6 to 2.8 0.86 999.0 MAXIMUM WIND (KT) : 40.0 22.5 to 126.5 0.47 999.0 2nd PC OF IR BR TEMP : 0.7 2.9 to -3.0 0.37 999.0 POT = MPI-VMAX (KT) : 97.4 27.0 to 144.1 0.60 999.0 D200 (10**7s-1) : -3.2 -30.8 to 188.1 0.13 999.0 BL DRY-AIR FLUX (W/M2) : 175.8 895.4 to -71.5 0.74 999.0 %area of TPW <45 mm upshear : 9.6 109.3 to 0.0 0.91 999.0 SHIPS Prob RI for 20kt/ 12hr RI threshold= 0% is 0.0 times climatological mean ( 4.9%) SHIPS Prob RI for 25kt/ 24hr RI threshold= 0% is 0.0 times climatological mean (10.9%) SHIPS Prob RI for 30kt/ 24hr RI threshold= 0% is 0.0 times climatological mean ( 6.8%) SHIPS Prob RI for 35kt/ 24hr RI threshold= 0% is 0.0 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: 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% Logistic: 0.3% 0.3% 0.2% 0.1% 0.0% 0.1% 0.0% 0.1% Bayesian: 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% Consensus: 0.1% 0.1% 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% DTOPS: 1.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% ## ANNULAR HURRICANE INDEX (AHI) AL182023 RINA 09/30/23 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 AL182023 RINA 09/30/2023 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) 40 37 35 31 28 24 21 DIS DIS DIS DIS DIS DIS DIS DIS DIS DIS 18HR AGO 40 39 37 33 30 26 23 DIS DIS DIS DIS DIS DIS DIS DIS DIS DIS 12HR AGO 40 37 36 32 29 25 22 DIS DIS DIS DIS DIS DIS DIS DIS DIS DIS 6HR AGO 40 34 31 30 27 23 20 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