* ATLANTIC 2021 SHIPS INTENSITY FORECAST * * IR SAT DATA AVAILABLE, OHC AVAILABLE * * SEBASTIEN AL202019 11/20/19 06 UTC * TIME (HR) 0 6 12 18 24 36 48 60 72 84 96 108 120 132 144 156 168 V (KT) NO LAND 45 46 47 48 48 51 51 48 47 47 46 45 43 42 42 42 40 V (KT) LAND 45 46 47 48 48 51 51 48 47 47 46 45 43 42 42 42 40 V (KT) LGEM 45 47 47 48 48 48 46 41 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 EXTP N/A N/A N/A N/A N/A N/A N/A N/A N/A SHEAR (KT) 19 23 17 16 21 20 44 52 N/A N/A N/A N/A N/A N/A N/A N/A N/A SHEAR ADJ (KT) 0 0 2 3 2 10 5 0 N/A N/A N/A N/A N/A N/A N/A N/A N/A SHEAR DIR 294 284 276 243 243 225 225 213 N/A N/A N/A N/A N/A N/A N/A N/A N/A SST (C) 28.1 28.1 28.0 27.9 27.7 26.6 25.2 24.0 N/A N/A N/A N/A N/A N/A N/A N/A N/A POT. INT. (KT) 137 137 135 135 133 123 111 102 N/A N/A N/A N/A N/A N/A N/A N/A N/A ADJ. POT. INT. 123 123 121 121 122 117 105 95 N/A N/A N/A N/A N/A N/A N/A N/A N/A 200 MB T (C) -54.8 -54.7 -54.6 -54.6 -54.8 -54.7 -54.8 -54.3 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 0.1 0.2 0.4 0.2 0.0 0.0 N/A N/A N/A N/A N/A N/A N/A N/A N/A TH_E DEV (C) 8 8 8 7 6 5 4 3 N/A N/A N/A N/A N/A N/A N/A N/A N/A 700-500 MB RH 53 51 52 50 46 35 30 31 N/A N/A N/A N/A N/A N/A N/A N/A N/A MODEL VTX (KT) 14 14 15 16 16 17 17 LOST LOST LOST LOST LOST LOST LOST LOST LOST LOST 850 MB ENV VOR -23 -27 -25 6 9 38 24 39 N/A N/A N/A N/A N/A N/A N/A N/A N/A 200 MB DIV 19 22 57 69 65 70 58 37 N/A N/A N/A N/A N/A N/A N/A N/A N/A 700-850 TADV 0 1 9 9 14 32 22 -68 N/A N/A N/A N/A N/A N/A N/A N/A N/A LAND (KM) 569 584 608 699 791 1143 1675 1645 N/A N/A N/A N/A N/A N/A N/A N/A N/A LAT (DEG N) 20.7 21.4 22.0 22.8 23.5 25.7 28.9 32.1 N/A N/A N/A N/A N/A N/A N/A N/A N/A LONG(DEG W) 60.9 61.1 61.4 61.0 60.5 58.0 54.0 49.9 N/A N/A N/A N/A N/A N/A N/A N/A N/A STM SPEED (KT) 7 7 7 9 12 20 24 24 N/A N/A N/A N/A N/A N/A N/A N/A N/A HEAT CONTENT 44 42 34 23 21 4 0 0 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):295/ 8 CX,CY: -6/ 3 T-12 MAX WIND: 40 PRESSURE OF STEERING LEVEL (MB): 731 (MEAN=620) GOES IR BRIGHTNESS TEMP. STD DEV. 50-200 KM RAD: 30.9 (MEAN=14.5) % GOES IR PIXELS WITH T < -20 C 50-200 KM RAD: 34.0 (MEAN=65.0) PRELIM RI PROB (DV .GE. 35 KT IN 36 HR): 2.4 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. 10. 11. 12. 12. 13. 14. 15. 15. 16. SST POTENTIAL 1. 1. 2. 3. 4. 5. 7. 8. 10. 11. 12. 11. 11. 10. 9. 8. VERTICAL SHEAR MAG -0. -0. 0. 0. -0. -3. -10. -14. -18. -21. -23. -25. -28. -29. -31. -32. VERTICAL SHEAR ADJ 0. -0. -0. -0. -1. -2. -2. -2. -2. -2. -2. -2. -2. -1. -1. -1. VERTICAL SHEAR DIR -0. -0. -0. -1. -1. -1. -0. -0. -0. -0. -0. -0. -0. -0. -0. -0. PERSISTENCE 1. 1. 1. 1. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 1. 1. 200/250 MB TEMP. 0. 0. 0. 0. 1. 1. 1. 1. 1. 1. 2. 2. 3. 4. 5. 5. THETA_E EXCESS -0. -0. -0. -0. -1. -1. -2. -1. -1. -1. -0. -0. 0. 1. 1. 2. 700-500 MB RH 0. 0. 0. 0. 1. 2. 3. 4. 4. 4. 5. 5. 5. 5. 6. 5. MODEL VTX TENDENCY -0. 0. 0. 1. 1. 1. -0. -1. -2. -2. -3. -4. -4. -5. -5. -6. 850 MB ENV VORTICITY -0. -0. -0. -1. -1. -1. -1. -1. -1. -1. -1. -1. -1. -1. -1. -2. 200 MB DIVERGENCE -0. -0. 0. 0. 1. 1. 1. 1. 1. 1. 0. -0. -1. -1. -1. -2. 850-700 T ADVEC 0. 0. 0. 0. 1. 1. 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. -1. -1. -2. -2. -2. -2. -1. -1. -2. DAYS FROM CLIM. PEAK -0. 0. 0. 0. -0. -0. -0. -0. -0. 0. 0. 0. 1. 2. 2. 2. GOES PREDICTORS -1. -1. -2. -2. -1. -1. -1. -1. -1. -0. -0. -1. -3. -3. -4. -3. OCEAN HEAT CONTENT 0. 0. 0. 0. 0. 0. -0. -0. -0. -0. -0. -0. -0. -0. -0. -0. RI POTENTIAL -0. -1. -1. -2. -3. -3. -2. -1. -0. 1. 2. 2. 3. 3. 3. 3. ------------------------------------------------------------------------------ TOTAL CHANGE 1. 2. 3. 3. 6. 6. 3. 2. 2. 1. 0. -2. -3. -3. -3. -5. CURRENT MAX WIND (KT): 45. LAT, LON: 20.7 60.9 ** 2022 ATLANTIC RI INDEX AL202019 SEBASTIEN 11/20/19 06 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 -45.0 to 30.0 0.67 3.4 850-200 MB SHEAR (KT) : 19.4 25.9 to 2.2 0.28 0.6 HEAT CONTENT (KJ/CM2) : 32.8 0.0 to 147.0 0.22 0.5 STD DEV OF IR BR TEMP : 30.9 33.3 to 3.1 0.08 0.2 MAXIMUM WIND (KT) : 45.0 25.0 to 125.0 0.56 0.9 2nd PC OF IR BR TEMP : 2.5 2.6 to -2.7 0.03 0.0 BL DRY-AIR FLUX (W/M2) : 273.2 814.0 to -65.0 0.62 0.8 POT = MPI-VMAX (KT) : 77.2 30.0 to 128.0 0.48 0.3 D200 (10**7s-1) : 46.4 -28.0 to 171.0 0.37 0.4 %area of TPW <45 mm upshear : 11.6 95.0 to 0.0 0.88 0.2 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= 10% is 1.0 times climatological mean (10.9%) SHIPS Prob RI for 30kt/ 24hr RI threshold= 7% is 1.1 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= 6% is 1.4 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% 10.5% 7.4% 0.0% 0.0% 6.3% 0.0% 0.0% Logistic: 0.7% 2.3% 0.9% 0.4% 0.1% 0.5% 0.1% 0.0% Bayesian: 0.5% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% Consensus: 0.4% 4.3% 2.8% 0.1% 0.0% 2.3% 0.0% 0.0% ## ANNULAR HURRICANE INDEX (AHI) AL202019 SEBASTIEN 11/20/19 06 UTC ## ## STORM NOT ANNULAR, SCREENING STEP FAILED, NPASS=2 NFAIL=5 ## ## 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 AL202019 SEBASTIEN 11/20/2019 06 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) 45 46 47 48 48 51 51 48 47 47 46 45 43 42 42 42 40 18HR AGO 45 44 45 46 46 49 49 46 45 45 44 43 41 40 40 40 38 12HR AGO 45 42 41 42 42 45 45 42 41 41 40 39 37 36 36 36 34 6HR AGO 45 39 36 35 35 38 38 35 34 34 33 32 30 29 29 29 27 NOW CURRENT INTENSITY < 83 KT IN 6HR INTENSITY IN 6HR < 83 KT IN 12HR INTENSITY IN 12HR < 83 KT