* GFS version * * ATLANTIC 2020 SHIPS INTENSITY FORECAST * * IR SAT DATA AVAILABLE, OHC AVAILABLE * * INVEST AL912020 09/02/20 00 UTC * TIME (HR) 0 6 12 18 24 36 48 60 72 84 96 108 120 132 144 156 168 V (KT) NO LAND 25 26 28 29 30 33 38 45 51 53 53 56 59 65 69 73 76 V (KT) LAND 25 26 28 29 30 33 38 45 51 53 53 56 59 65 69 73 76 V (KT) LGEM 25 25 25 26 25 25 26 27 29 31 33 35 36 37 39 43 50 Storm Type TROP TROP TROP TROP TROP TROP TROP TROP TROP TROP TROP TROP TROP TROP TROP TROP TROP SHEAR (KT) 17 18 24 26 26 24 21 20 18 19 23 24 17 11 11 6 5 SHEAR ADJ (KT) 0 2 0 -1 -1 2 -2 -5 -7 -4 -3 -5 -2 4 2 6 2 SHEAR DIR 107 94 84 86 79 67 77 77 79 90 98 97 94 57 73 74 82 SST (C) 28.1 28.0 28.0 28.0 28.1 28.2 28.3 28.4 28.8 28.8 28.7 28.7 28.7 28.9 29.1 29.2 29.1 POT. INT. (KT) 134 133 133 133 134 138 140 141 147 147 145 142 144 147 150 151 150 ADJ. POT. INT. 124 123 124 123 125 133 139 140 146 146 141 135 138 143 145 146 147 200 MB T (C) -53.8 -54.0 -53.9 -53.5 -53.6 -53.5 -53.5 -53.8 -53.6 -53.8 -53.9 -53.9 -53.9 -54.0 -53.7 -53.7 -53.5 200 MB VXT (C) 0.0 0.0 0.0 0.0 0.1 0.0 0.1 0.0 0.0 0.0 -0.1 -0.1 -0.1 -0.2 -0.2 -0.1 0.0 TH_E DEV (C) 6 6 6 6 6 6 6 6 6 7 6 6 7 6 7 6 7 700-500 MB RH 60 59 58 57 55 54 60 64 68 67 68 66 67 67 69 65 64 MODEL VTX (KT) 9 10 10 10 10 9 9 10 10 9 8 8 8 9 9 9 8 850 MB ENV VOR 40 26 22 6 9 10 21 23 30 31 25 27 26 14 18 25 16 200 MB DIV 66 68 68 79 94 39 55 29 48 58 96 49 69 2 -21 -32 -19 700-850 TADV 0 0 0 0 1 1 1 -1 -5 -5 -3 -1 -1 0 0 0 0 LAND (KM) 1675 1696 1721 1735 1728 1641 1469 1319 1232 1215 1154 1124 1111 1072 1074 1064 1021 LAT (DEG N) 12.0 12.2 12.4 12.5 12.4 11.6 10.1 8.9 8.4 8.8 9.4 9.8 9.6 xx.x xx.x xx.x xx.x LONG(DEG W) 37.7 37.8 37.6 37.4 37.2 37.2 37.6 38.7 39.9 41.2 42.2 42.8 42.8 xxx.x xxx.x xxx.x xxx.x STM SPEED (KT) 2 2 2 2 2 6 8 7 6 7 5 2 3 4 2 2 4 HEAT CONTENT 12 13 12 13 13 12 13 18 23 26 26 27 27 28 30 31 31 FORECAST TRACK FROM TABM INITIAL HEADING/SPEED (DEG/KT):270/ 2 CX,CY: -1/ 0 T-12 MAX WIND: 15 PRESSURE OF STEERING LEVEL (MB): 585 (MEAN=620) GOES IR BRIGHTNESS TEMP. STD DEV. 50-200 KM RAD: 19.9 (MEAN=14.5) % GOES IR PIXELS WITH T < -20 C 50-200 KM RAD: 38.0 (MEAN=65.0) PRELIM RI PROB (DV .GE. 35 KT IN 36 HR): 0.7 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. 14. 15. 16. SST POTENTIAL 0. 0. 1. 1. 4. 9. 15. 20. 25. 28. 31. 34. 37. 38. 39. 39. VERTICAL SHEAR MAG 1. 1. 2. 2. 2. -0. -4. -6. -9. -12. -13. -13. -13. -12. -10. -8. VERTICAL SHEAR ADJ -0. 0. 0. 0. 0. 1. 2. 3. 4. 4. 3. 3. 3. 2. 2. 1. VERTICAL SHEAR DIR 0. 1. 1. 2. 3. 5. 7. 9. 10. 11. 12. 13. 15. 15. 15. 15. PERSISTENCE -0. -1. -1. -1. -0. -0. -0. -0. -0. 0. 0. 0. -0. -0. -1. -0. 200/250 MB TEMP. -0. -0. -1. -1. -1. -1. -1. -0. -0. -0. 0. 0. 1. 2. 4. 5. THETA_E EXCESS -0. -0. -1. -1. -1. -1. -1. -1. -1. -1. -1. -1. -1. -0. -0. 0. 700-500 MB RH -0. -0. -0. -0. -0. -1. -1. -2. -3. -3. -3. -3. -3. -4. -4. -4. MODEL VTX TENDENCY 0. 1. 0. -0. -1. -1. -1. -2. -5. -6. -7. -8. -7. -7. -7. -9. 850 MB ENV VORTICITY 0. 0. -0. -0. -0. -0. -0. -0. -0. -0. -0. -0. -0. -0. -0. -1. 200 MB DIVERGENCE 0. 0. 1. 1. 1. 1. 1. 1. 1. 1. -0. -1. -1. -1. -1. -1. 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. -1. -1. -1. -2. -2. -2. -2. -3. -3. 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. -0. -0. -0. -0. -1. -1. -1. -1. GOES PREDICTORS -0. -1. -1. -1. -1. -2. -3. -3. -4. -3. -3. -4. -3. -3. -3. -2. 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. -4. -3. -2. -0. 1. 2. 3. 3. 3. 3. 3. ------------------------------------------------------------------------------ TOTAL CHANGE 1. 3. 4. 5. 8. 13. 20. 26. 28. 28. 31. 34. 40. 44. 48. 51. CURRENT MAX WIND (KT): 25. LAT, LON: 12.0 37.7 ** 2020 ATLANTIC RI INDEX AL912020 INVEST 09/02/20 00 UTC ** (SHIPS-RII PREDICTOR TABLE for 30 KT OR MOREMAXIMUM 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 3.9 850-200 MB SHEAR (KT) : 22.2 30.1 to 2.3 0.28 0.7 HEAT CONTENT (KJ/CM2) : 12.6 0.0 to 151.8 0.08 0.2 STD DEV OF IR BR TEMP : 19.9 36.6 to 2.8 0.49 1.4 MAXIMUM WIND (KT) : 25.0 22.5 to 137.5 0.07 0.1 2nd PC OF IR BR TEMP : -0.5 2.9 to -2.9 0.59 1.0 BL DRY-AIR FLUX (W/M2) : 128.6 895.4 to -55.0 0.81 1.4 POT = MPI-VMAX (KT) : 98.7 27.5 to 139.6 0.64 0.4 D200 (10**7s-1) : 75.0 -29.7 to 185.9 0.49 0.2 %area of TPW <45 mm upshear : 0.0 100.0 to 0.0 1.00 0.2 SHIPS Prob RI for 20kt/ 12hr RI threshold= 4% is 0.7 times climatological mean ( 5.0%) SHIPS Prob RI for 25kt/ 24hr RI threshold= 13% is 1.2 times climatological mean (10.9%) SHIPS Prob RI for 30kt/ 24hr RI threshold= 9% is 1.4 times climatological mean ( 6.9%) SHIPS Prob RI for 35kt/ 24hr RI threshold= 6% is 1.6 times climatological mean ( 3.9%) SHIPS Prob RI for 40kt/ 24hr RI threshold= 0% is 0.0 times climatological mean ( 2.5%) 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= 7% is 1.6 times climatological mean ( 4.6%) SHIPS Prob RI for 65kt/ 72hr RI threshold= 0% is 0.0 times climatological mean ( 5.2%) 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: 3.7% 13.3% 9.4% 6.4% 0.0% 0.0% 7.1% 0.0% Logistic: 1.6% 3.1% 1.9% 0.5% 0.1% 0.4% 0.4% 0.6% Bayesian: 0.3% 0.1% 0.4% 0.0% 0.0% 0.1% 0.3% 0.0% Consensus: 1.9% 5.5% 3.9% 2.3% 0.0% 0.2% 2.6% 0.2% DTOPS: 999.0% 999.0% 999.0% 999.0% 999.0% 999.0% 999.0% 999.0% ## ANNULAR HURRICANE INDEX (AHI) AL912020 INVEST 09/02/20 00 UTC ## ## STORM NOT ANNULAR, SCREENING STEP FAILED, NPASS=6 NFAIL=1 ## ## 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 AL912020 INVEST 09/02/2020 00 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) 25 26 28 29 30 33 38 45 51 53 53 56 59 65 69 73 76 18HR AGO 25 24 26 27 28 31 36 43 49 51 51 54 57 63 67 71 74 12HR AGO 25 22 21 22 23 26 31 38 44 46 46 49 52 58 62 66 69 6HR AGO 25 19 16 15 16 19 24 31 37 39 39 42 45 51 55 59 62 NOW CURRENT INTENSITY < 83 KT IN 6HR INTENSITY IN 6HR < 83 KT IN 12HR INTENSITY IN 12HR < 83 KT