* GFS version * * ATLANTIC 2025 SHIPS INTENSITY FORECAST * * IR SAT DATA PROXY USED, OHC CLIMO USED * * DEXTER AL042025 08/05/25 12 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 36 38 40 41 39 37 33 30 25 23 N/A N/A N/A N/A N/A N/A V (KT) LAND 35 36 38 40 41 39 37 33 30 25 23 N/A N/A N/A N/A N/A N/A V (KT) LGEM 35 35 34 34 32 29 26 23 20 19 18 N/A N/A N/A N/A N/A N/A Storm Type TROP TROP TROP TROP EXTP EXTP EXTP EXTP EXTP EXTP EXTP N/A N/A N/A N/A N/A N/A SHEAR (KT) 34 37 37 39 46 50 59 59 55 48 46 N/A N/A N/A N/A N/A N/A SHEAR ADJ (KT) 0 0 4 3 1 1 -1 -2 -7 -2 -4 N/A N/A N/A N/A N/A N/A SHEAR DIR 288 285 278 275 266 271 270 249 246 252 270 N/A N/A N/A N/A N/A N/A SST (C) 28.2 27.7 27.0 27.1 27.6 26.5 24.9 20.5 20.9 19.7 18.1 N/A N/A N/A N/A N/A N/A POT. INT. (KT) 139 132 124 126 132 120 107 83 85 82 78 N/A N/A N/A N/A N/A N/A 200 MB T (C) -53.4 -53.2 -53.1 -53.3 -53.5 -53.3 -53.4 -54.3 -54.9 -54.4 -53.7 N/A N/A N/A N/A N/A N/A 200 MB VXT (C) 0.2 0.0 -0.2 -0.3 -0.5 -0.3 0.0 0.5 0.3 0.3 0.1 N/A N/A N/A N/A N/A N/A TH_E DEV (C) 4 4 3 3 2 2 1 0 0 0 0 N/A N/A N/A N/A N/A N/A 700-500 MB RH 39 37 40 44 46 46 44 41 46 45 41 N/A N/A N/A N/A N/A N/A MODEL VTX (KT) 14 14 15 16 16 15 15 16 17 14 13 LOST LOST LOST LOST LOST LOST 850 MB ENV VOR -21 -19 0 -8 0 19 2 -12 -5 -19 20 N/A N/A N/A N/A N/A N/A 200 MB DIV -9 3 15 33 33 7 7 8 3 3 -13 N/A N/A N/A N/A N/A N/A 700-850 TADV 8 6 3 4 -5 -13 -13 -23 -25 -18 -1 N/A N/A N/A N/A N/A N/A LAND (KM) 664 622 591 616 627 690 605 595 768 1076 1500 N/A N/A N/A N/A N/A N/A LAT (DEG N) 37.7 38.3 38.8 39.3 39.7 40.2 41.2 42.9 44.2 45.7 47.4 N/A N/A N/A N/A N/A N/A LONG(DEG W) 63.9 63.1 62.3 60.8 59.3 56.3 52.8 47.7 43.8 38.8 32.7 N/A N/A N/A N/A N/A N/A STM SPEED (KT) 10 8 10 12 12 13 18 18 17 21 22 N/A N/A N/A N/A N/A N/A HEAT CONTENT 18 16 12 8 4 3 0 0 0 0 0 N/A N/A N/A N/A N/A N/A FORECAST TRACK FROM OFCI INITIAL HEADING/SPEED (DEG/KT): 50/ 11 CX,CY: 8/ 7 T-12 MAX WIND: 35 PRESSURE OF STEERING LEVEL (MB): 654 (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: 25.0 (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. 8. 9. 11. 12. 12. 0. 0. 0. 0. 0. 0. SST POTENTIAL 0. 0. 0. -0. -1. -2. -3. -3. -3. -3. 0. 0. 0. 0. 0. 0. VERTICAL SHEAR MAG 2. 4. 5. 7. 7. 4. -2. -9. -12. -14. 0. 0. 0. 0. 0. 0. VERTICAL SHEAR ADJ 0. -0. -0. -0. -0. 0. 1. 2. 3. 4. 0. 0. 0. 0. 0. 0. VERTICAL SHEAR DIR 0. 0. 1. 1. 2. 3. 4. 5. 6. 6. 0. 0. 0. 0. 0. 0. PERSISTENCE -0. -1. -1. -1. -0. -0. -0. -0. -0. 0. 0. 0. 0. 0. 0. 0. 200/250 MB TEMP. -0. -0. -1. -1. -1. -1. -0. 0. 1. 1. 0. 0. 0. 0. 0. 0. THETA_E EXCESS -0. -0. -1. -1. -2. -3. -4. -5. -5. -6. 0. 0. 0. 0. 0. 0. 700-500 MB RH 0. 1. 1. 1. 2. 2. 3. 3. 4. 4. 0. 0. 0. 0. 0. 0. MODEL VTX TENDENCY 0. 0. 1. 1. -1. -1. -1. -0. -5. -8. 0. 0. 0. 0. 0. 0. 850 MB ENV VORTICITY -0. -0. -1. -1. -1. -1. -1. -1. -1. -1. 0. 0. 0. 0. 0. 0. 200 MB DIVERGENCE -0. -0. -0. -0. -1. -1. -1. -1. -1. -1. 0. 0. 0. 0. 0. 0. 850-700 T ADVEC -0. 0. 0. 0. -0. -1. -1. -2. -2. -2. 0. 0. 0. 0. 0. 0. ZONAL STORM MOTION 0. 0. -0. -0. -1. -1. -1. -1. -1. -2. 0. 0. 0. 0. 0. 0. STEERING LEVEL PRES -0. -0. -0. -0. -0. -0. -0. -0. -0. -0. 0. 0. 0. 0. 0. 0. DAYS FROM CLIM. PEAK 0. 0. 0. 0. 0. 0. 0. 0. 1. 1. 0. 0. 0. 0. 0. 0. GOES PREDICTORS -1. -1. -1. -1. -1. -2. -2. -3. -3. -3. 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. -5. -4. -2. -1. 1. 0. 0. 0. 0. 0. 0. -------------------------------------------------------------------------------------------- TOTAL CHANGE 1. 3. 5. 6. 4. 2. -2. -5. -10. -12. 0. 0. 0. 0. 0. 0. CURRENT MAX WIND (KT): 35. LAT, LON: 37.7 63.9 ** 2025 ATLANTIC RI INDEX AL042025 DEXTER 08/05/25 12 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) : 0.0 -49.5 to 33.0 0.60 999.0 MULTI-LAYER SHEAR (KT) : 50.2 46.9 to 6.8 0.00 999.0 HEAT CONTENT (KJ/CM2) : 11.6 0.0 to 155.1 0.07 999.0 STD DEV OF IR BR TEMP : 999.0 36.6 to 2.8 999.00 999.0 MAXIMUM WIND (KT) : 35.0 22.5 to 137.5 0.33 999.0 2nd PC OF IR BR TEMP : 9999.0 2.9 to -3.0 999.00 999.0 BL DRY-AIR FLUX (W/M2) : 291.8 895.4 to -69.3 0.63 999.0 D200 (10**7s-1) : 15.0 -29.7 to 189.2 0.20 999.0 POT = MPI-VMAX (KT) : 72.7 30.0 to 151.8 0.35 999.0 %area of TPW <45 mm upshear : 82.9 100.0 to 0.0 0.17 999.0 SHIPS Prob RI for 20kt/ 12hr RI threshold= 999% is 999.0 times climatological mean ( 4.9%) SHIPS Prob RI for 25kt/ 24hr RI threshold= 999% is 999.0 times climatological mean (10.9%) SHIPS Prob RI for 30kt/ 24hr RI threshold= 999% is 999.0 times climatological mean ( 6.8%) SHIPS Prob RI for 35kt/ 24hr RI threshold= 999% is 999.0 times climatological mean ( 3.9%) SHIPS Prob RI for 40kt/ 24hr RI threshold= 999% is 999.0 times climatological mean ( 2.4%) SHIPS Prob RI for 45kt/ 36hr RI threshold= 999% is 999.0 times climatological mean ( 4.6%) SHIPS Prob RI for 55kt/ 48hr RI threshold= 999% is 999.0 times climatological mean ( 4.7%) SHIPS Prob RI for 65kt/ 72hr RI threshold= 999% is 999.0 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: 999.0% 999.0% 999.0% 999.0% 999.0% 999.0% 999.0% 999.0% Logistic: 999.0% 999.0% 999.0% 999.0% 999.0% 999.0% 999.0% 999.0% Bayesian: 999.0% 999.0% 999.0% 999.0% 999.0% 999.0% 999.0% 999.0% Consensus: 999.0% 999.0% 999.0% 999.0% 999.0% 999.0% 999.0% 999.0% DTOPS: 1.0% 2.0% 1.0% 0.0% 0.0% 0.0% 0.0% 0.0% SDCON: 999.0% 999.0% 999.0% 999.0% 999.0% 999.0% 999.0% 999.0% ## ANNULAR HURRICANE INDEX (AHI) AL042025 DEXTER 08/05/25 12 UTC ## ## ERR=2, BOTH IR FILES BAD OR MISSING ** PROBLTY OF AT LEAST 1 SCNDRY EYEWL FORMTN EVENT AL042025 DEXTER 08/05/2025 12 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 36 38 40 41 39 37 33 30 25 23 DIS DIS DIS DIS DIS DIS 18HR AGO 35 34 36 38 39 37 35 31 28 23 21 DIS DIS DIS DIS DIS DIS 12HR AGO 35 32 31 33 34 32 30 26 23 18 16 DIS DIS DIS DIS DIS DIS 6HR AGO 35 29 26 25 26 24 22 18 15 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