* GFS version * * ATLANTIC 2024 SHIPS INTENSITY FORECAST * * IR SAT DATA AVAILABLE, OHC AVAILABLE * * JOYCE AL112024 09/30/24 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 30 30 30 30 30 29 29 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A V (KT) LAND 30 30 30 30 30 29 29 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A V (KT) LGEM 30 30 29 28 27 25 23 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) 20 24 24 23 19 22 31 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A SHEAR ADJ (KT) 5 3 3 0 0 11 3 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A SHEAR DIR 224 233 245 250 250 257 251 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A SST (C) 29.5 29.5 29.5 29.5 29.5 29.6 28.9 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A POT. INT. (KT) 157 158 158 158 159 162 150 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 200 MB T (C) -52.6 -52.7 -52.7 -52.6 -52.5 -52.3 -52.5 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 200 MB VXT (C) 0.3 0.0 -0.2 -0.3 0.0 0.5 0.5 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A TH_E DEV (C) 10 10 10 10 10 8 7 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 700-500 MB RH 40 40 41 42 44 51 53 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A MODEL VTX (KT) 10 9 9 8 7 6 6 LOST LOST LOST LOST LOST LOST LOST LOST LOST LOST 850 MB ENV VOR 24 16 0 1 -18 -36 -37 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 200 MB DIV 39 11 -12 0 -10 -8 27 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 700-850 TADV 2 1 2 4 4 5 7 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A LAND (KM) 1445 1463 1482 1498 1516 1612 1773 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A LAT (DEG N) 22.5 23.0 23.4 24.0 24.5 25.9 27.8 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A LONG(DEG W) 48.9 48.9 48.9 49.0 49.1 48.9 48.4 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A STM SPEED (KT) 3 4 5 6 6 9 9 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A HEAT CONTENT 32 32 32 30 29 24 18 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): 0/ 1 CX,CY: 0/ 1 T-12 MAX WIND: 30 PRESSURE OF STEERING LEVEL (MB): 731 (MEAN=620) GOES IR BRIGHTNESS TEMP. STD DEV. 50-200 KM RAD: 25.8 (MEAN=14.5) % GOES IR PIXELS WITH T < -20 C 50-200 KM RAD: 27.0 (MEAN=65.0) PRELIM RI PROB (DV .GE. 35 KT IN 36 HR): 0.3 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. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. SST POTENTIAL 0. 0. 0. 1. 3. 7. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. VERTICAL SHEAR MAG 1. 2. 3. 4. 4. 3. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. VERTICAL SHEAR ADJ -0. -0. -0. -0. -2. -3. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. VERTICAL SHEAR DIR -0. -0. -0. -1. -1. -1. 0. 0. 0. 0. 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. -1. -1. -1. -2. -2. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. THETA_E EXCESS 0. 0. 0. 1. 1. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 700-500 MB RH 0. 0. 1. 1. 2. 2. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. MODEL VTX TENDENCY -0. -1. -1. -3. -5. -7. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 850 MB ENV VORTICITY -0. -0. -0. -0. -1. -1. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 200 MB DIVERGENCE -0. -0. -1. -1. -1. -1. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 850-700 T ADVEC 0. -0. -0. -0. 0. 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. -1. -1. -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. -1. -2. 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. -4. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. -------------------------------------------------------------------------------------------- TOTAL CHANGE 0. -0. -0. -0. -1. -1. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. CURRENT MAX WIND (KT): 30. LAT, LON: 22.5 48.9 ** 2024 ATLANTIC RI INDEX AL112024 JOYCE 09/30/24 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) : 0.0 -49.5 to 33.0 0.60 2.5 MULTI-LAYER SHEAR (KT) : 32.3 46.9 to 6.8 0.36 0.8 HEAT CONTENT (KJ/CM2) : 31.0 0.0 to 155.1 0.20 0.3 STD DEV OF IR BR TEMP : 25.8 36.6 to 2.8 0.32 0.5 MAXIMUM WIND (KT) : 30.0 22.5 to 137.5 0.20 0.2 2nd PC OF IR BR TEMP : -0.2 2.9 to -3.0 0.52 0.5 BL DRY-AIR FLUX (W/M2) : 246.8 895.4 to -69.3 0.67 0.6 D200 (10**7s-1) : 5.6 -29.7 to 189.2 0.16 0.1 POT = MPI-VMAX (KT) : 108.0 27.0 to 143.0 0.70 0.4 %area of TPW <45 mm upshear : 67.8 109.2 to 0.0 0.38 -0.0 SHIPS Prob RI for 20kt/ 12hr RI threshold= 1% is 0.3 times climatological mean ( 4.9%) SHIPS Prob RI for 25kt/ 24hr RI threshold= 9% is 0.9 times climatological mean (10.9%) SHIPS Prob RI for 30kt/ 24hr RI threshold= 6% is 0.9 times climatological mean ( 6.8%) SHIPS Prob RI for 35kt/ 24hr RI threshold= 4% is 1.0 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= 6% is 1.3 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: 1.4% 9.3% 6.0% 3.9% 0.0% 6.2% 0.0% 0.0% Logistic: 0.9% 0.9% 0.6% 0.1% 0.0% 0.1% 0.1% 0.1% Bayesian: 0.1% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% Consensus: 0.8% 3.4% 2.2% 1.3% 0.0% 2.1% 0.0% 0.0% DTOPS: 1.0% 1.0% 1.0% 1.0% 1.0% 0.0% 0.0% 0.0% SDCON: .9% 2.2% 1.6% 1.1% .5% 1.0% 0% 0% ## ANNULAR HURRICANE INDEX (AHI) AL112024 JOYCE 09/30/24 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 AL112024 JOYCE 09/30/2024 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) 30 30 30 30 30 29 29 DIS DIS DIS DIS DIS DIS DIS DIS DIS DIS 18HR AGO 30 29 29 29 29 28 28 DIS DIS DIS DIS DIS DIS DIS DIS DIS DIS 12HR AGO 30 27 26 26 26 25 25 DIS DIS DIS DIS DIS DIS DIS DIS DIS DIS 6HR AGO 30 24 21 20 20 19 19 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