* GFS version * * ATLANTIC 2020 SHIPS INTENSITY FORECAST * * IR SAT DATA AVAILABLE, OHC AVAILABLE * * PAULETTE AL172020 09/22/20 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 35 31 29 30 30 26 21 17 17 17 N/A N/A N/A N/A N/A N/A N/A V (KT) LAND 35 31 29 30 30 26 21 17 17 17 N/A N/A N/A N/A N/A N/A N/A V (KT) LGEM 35 30 28 27 26 25 25 25 26 28 30 N/A N/A N/A N/A N/A N/A Storm Type EXTP EXTP EXTP EXTP EXTP EXTP EXTP EXTP EXTP EXTP EXTP N/A N/A N/A N/A N/A N/A SHEAR (KT) 29 18 15 17 26 14 17 7 8 23 37 N/A N/A N/A N/A N/A N/A SHEAR ADJ (KT) -3 0 0 0 -1 4 -1 8 3 -2 -6 N/A N/A N/A N/A N/A N/A SHEAR DIR 19 3 288 228 226 5 349 320 247 233 246 N/A N/A N/A N/A N/A N/A SST (C) 23.9 23.4 23.3 23.0 22.7 22.5 22.8 22.7 23.8 24.8 25.1 N/A N/A N/A N/A N/A N/A POT. INT. (KT) 97 93 93 92 88 86 88 91 99 104 105 N/A N/A N/A N/A N/A N/A ADJ. POT. INT. 84 81 81 80 77 73 75 81 89 91 90 N/A N/A N/A N/A N/A N/A 200 MB T (C) -54.8 -55.3 -55.3 -54.9 -54.8 -53.9 -54.4 -54.1 -53.4 -53.7 -54.1 N/A N/A N/A N/A N/A N/A 200 MB VXT (C) 0.4 0.3 1.1 1.1 -0.3 1.4 0.5 0.8 0.9 0.8 0.6 N/A N/A N/A N/A N/A N/A TH_E DEV (C) 2 2 2 2 2 1 1 1 2 3 4 N/A N/A N/A N/A N/A N/A 700-500 MB RH 47 53 54 53 53 52 48 47 48 55 60 N/A N/A N/A N/A N/A N/A MODEL VTX (KT) 15 14 13 15 15 11 9 7 7 6 6 LOST LOST LOST LOST LOST LOST 850 MB ENV VOR -7 -16 -20 0 -18 -16 -24 -46 -25 -52 -64 N/A N/A N/A N/A N/A N/A 200 MB DIV 19 36 20 13 -16 -51 -21 -40 -15 5 20 N/A N/A N/A N/A N/A N/A 700-850 TADV 5 -17 -17 -3 -6 0 2 21 51 50 33 N/A N/A N/A N/A N/A N/A LAND (KM) 1126 1066 981 890 782 712 677 714 1000 1198 1281 N/A N/A N/A N/A N/A N/A LAT (DEG N) 34.7 34.9 35.0 35.3 35.5 35.5 34.9 34.1 33.0 32.0 31.3 N/A N/A N/A N/A N/A N/A LONG(DEG W) 21.8 20.7 19.7 18.5 17.4 16.6 16.1 17.0 21.6 24.7 26.1 N/A N/A N/A N/A N/A N/A STM SPEED (KT) 10 9 9 10 6 3 4 12 17 11 7 N/A N/A N/A N/A N/A N/A HEAT CONTENT 0 0 0 0 0 0 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): 95/ 11 CX,CY: 11/ 0 T-12 MAX WIND: 50 PRESSURE OF STEERING LEVEL (MB): 692 (MEAN=620) GOES IR BRIGHTNESS TEMP. STD DEV. 50-200 KM RAD: 7.8 (MEAN=14.5) % GOES IR PIXELS WITH T < -20 C 50-200 KM RAD: 1.0 (MEAN=65.0) PRELIM RI PROB (DV .GE. 35 KT IN 36 HR): 0.1 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 -1. -1. -2. -2. -2. -2. -1. 1. 3. 4. 4. 3. 1. 1. -1. -2. VERTICAL SHEAR MAG 1. 3. 4. 5. 5. 5. 3. 3. 0. -5. -7. -9. -11. -13. -13. -13. VERTICAL SHEAR ADJ 0. 0. 0. 1. 0. 0. -1. -1. -0. 1. 1. 0. 0. 0. 0. 0. VERTICAL SHEAR DIR -0. -0. 0. 0. 1. 1. 1. 1. 2. 3. 3. 3. 4. 4. 4. 4. PERSISTENCE -3. -5. -6. -5. -3. -2. -3. -2. -1. -1. 0. 0. -1. -2. -4. -4. 200/250 MB TEMP. 0. 1. 1. 2. 2. 2. 2. 2. 2. 2. 2. 3. 3. 2. 1. 1. THETA_E EXCESS -0. -1. -1. -2. -3. -3. -3. -3. -3. -3. -2. -2. -2. -1. -0. 1. 700-500 MB RH 0. 0. 0. 0. 0. 0. 1. 1. 1. 0. 0. 0. 0. 0. 0. 0. MODEL VTX TENDENCY -0. -1. -0. -1. -4. -9. -12. -14. -16. -18. -19. -20. -19. -19. -18. -18. 850 MB ENV VORTICITY -0. -0. -0. -1. -1. -1. -2. -2. -3. -3. -4. -4. -4. -4. -5. -5. 200 MB DIVERGENCE -0. -0. -0. -0. -1. -1. -2. -2. -2. -1. 0. 1. 2. 2. 3. 4. 850-700 T ADVEC 0. -0. -0. -0. -0. -1. -0. 1. 1. 1. 1. 0. 0. 0. 0. 0. ZONAL STORM MOTION 0. 0. -0. -0. -1. -2. -2. -3. -4. -6. -7. -8. -8. -8. -9. -9. STEERING LEVEL PRES -0. -0. -0. -0. -1. -1. -0. -1. -1. -1. -2. -2. -1. -1. -1. -1. DAYS FROM CLIM. PEAK 0. -0. -0. -0. -0. 0. 0. -0. -0. -0. -0. -0. -0. -0. -0. -0. GOES PREDICTORS -1. -2. -2. -2. -3. -4. -6. -6. -7. -7. -7. -8. -7. -7. -7. -4. 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. -3. -2. -0. 1. 2. 3. 3. 3. 4. 4. ------------------------------------------------------------------------------ TOTAL CHANGE -4. -6. -5. -5. -9. -14. -18. -18. -18. -22. -23. -25. -26. -28. -31. -28. CURRENT MAX WIND (KT): 35. LAT, LON: 34.7 21.8 ** 2020 ATLANTIC RI INDEX AL172020 PAULETTE 09/22/20 18 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) : -15.0 -49.5 to 33.0 0.42 2.4 850-200 MB SHEAR (KT) : 21.0 30.1 to 2.3 0.33 0.7 HEAT CONTENT (KJ/CM2) : 0.0 0.0 to 151.8 0.00 0.0 STD DEV OF IR BR TEMP : 7.8 36.6 to 2.8 0.85 2.1 MAXIMUM WIND (KT) : 35.0 22.5 to 137.5 0.33 0.4 2nd PC OF IR BR TEMP : 0.1 2.9 to -2.9 0.49 0.8 BL DRY-AIR FLUX (W/M2) : 171.0 895.4 to -55.0 0.76 1.1 POT = MPI-VMAX (KT) : 45.7 27.5 to 139.6 0.16 0.1 D200 (10**7s-1) : 14.4 -29.7 to 185.9 0.20 0.1 %area of TPW <45 mm upshear : 96.9 100.0 to 0.0 0.03 0.0 SHIPS Prob RI for 20kt/ 12hr RI threshold= 3% is 0.6 times climatological mean ( 5.0%) SHIPS Prob RI for 25kt/ 24hr RI threshold= 9% is 0.8 times climatological mean (10.9%) SHIPS Prob RI for 30kt/ 24hr RI threshold= 8% is 1.1 times climatological mean ( 6.9%) 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 ( 2.5%) 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= 0% is 0.0 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: 2.9% 9.1% 7.7% 0.0% 0.0% 0.0% 0.0% 0.0% Logistic: 0.5% 0.6% 0.3% 0.1% 0.0% 0.1% 0.0% 0.0% Bayesian: 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% Consensus: 1.1% 3.2% 2.7% 0.0% 0.0% 0.0% 0.0% 0.0% DTOPS: 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% ** PROBLTY OF AT LEAST 1 SCNDRY EYEWL FORMTN EVENT AL172020 PAULETTE 09/22/2020 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) 35 31 29 30 30 26 21 17 17 17 DIS DIS DIS DIS DIS DIS DIS 18HR AGO 35 34 32 33 33 29 24 20 20 20 DIS DIS DIS DIS DIS DIS DIS 12HR AGO 35 32 31 32 32 28 23 19 19 19 DIS DIS DIS DIS DIS DIS DIS 6HR AGO 35 29 26 25 25 21 16 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