* GFS version * * ATLANTIC 2020 SHIPS INTENSITY FORECAST * * IR SAT DATA AVAILABLE, OHC AVAILABLE * * ZETA AL282020 10/29/20 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 45 36 31 28 26 19 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A V (KT) LAND 45 37 35 32 30 23 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A V (KT) LGEM 45 36 34 29 25 19 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A Storm Type EXTP EXTP EXTP EXTP EXTP EXTP N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A SHEAR (KT) 36 46 67 81 100 113 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A SHEAR ADJ (KT) 12 12 12 7 -2 -8 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A SHEAR DIR 257 251 245 250 256 263 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A SST (C) 23.0 19.5 18.4 19.3 20.8 14.6 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A POT. INT. (KT) 101 86 83 86 91 77 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A ADJ. POT. INT. 98 84 81 82 87 75 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 200 MB T (C) -51.9 -51.9 -51.9 -52.1 -52.5 -52.5 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 200 MB VXT (C) 0.6 0.6 0.2 0.1 0.0 0.0 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A TH_E DEV (C) 0 0 0 0 0 0 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 700-500 MB RH 55 54 55 60 57 51 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A MODEL VTX (KT) 19 18 15 17 LOST LOST LOST LOST LOST LOST LOST LOST LOST LOST LOST LOST LOST 850 MB ENV VOR 105 98 93 69 67 159 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 200 MB DIV 185 123 85 58 53 34 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 700-850 TADV 129 68 -1 -49 -77 -181 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A LAND (KM) -398 -208 120 314 386 433 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A LAT (DEG N) 35.3 37.3 39.2 40.5 41.8 44.6 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A LONG(DEG W) 83.6 78.3 73.0 66.6 60.1 48.4 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A STM SPEED (KT) 43 46 48 51 48 45 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A HEAT CONTENT 0 0 0 0 0 0 N/A 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): 45/ 40 CX,CY: 28/ 28 T-12 MAX WIND: 85 PRESSURE OF STEERING LEVEL (MB): 622 (MEAN=620) GOES IR BRIGHTNESS TEMP. STD DEV. 50-200 KM RAD: 18.2 (MEAN=14.5) % GOES IR PIXELS WITH T < -20 C 50-200 KM RAD: 75.0 (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. 10. 11. 12. 12. 13. 14. 14. 15. 16. SST POTENTIAL -0. -1. -2. -2. -3. -3. -3. -4. -4. -4. -5. -6. -8. -9. -10. -11. VERTICAL SHEAR MAG 0. 0. -0. -2. -10. -25. -46. -66. -82. -97.-109.-120.-133.-144.-150.-154. VERTICAL SHEAR ADJ -1. -2. -2. -2. -2. -2. -3. -3. -3. -3. -2. -2. -2. -2. -2. -1. VERTICAL SHEAR DIR 0. 1. 1. 2. 3. 4. 6. 7. 8. 9. 10. 11. 13. 13. 13. 13. PERSISTENCE -8. -12. -13. -12. -7. -6. -6. -5. -2. -1. 1. 0. -2. -5. -9. -8. 200/250 MB TEMP. -0. -1. -1. -2. -2. -2. -2. -2. -2. -2. -3. -3. -3. -3. -2. -1. THETA_E EXCESS -1. -1. -2. -3. -4. -4. -4. -4. -4. -3. -2. -2. -2. -1. -0. 1. 700-500 MB RH 0. 0. -0. -0. -0. -0. -0. -1. -1. -1. -1. -1. -1. -1. -1. -1. MODEL VTX TENDENCY -0. -2. -2. -2. -3. -4. -5. -6. -7. -8. -9. -10. -10. -10. -10. -10. 850 MB ENV VORTICITY 0. 1. 1. 1. 2. 2. 3. 3. 4. 4. 5. 5. 5. 6. 6. 7. 200 MB DIVERGENCE 0. 1. 1. 2. 2. 2. 2. 2. 2. 1. -0. -2. -2. -3. -4. -5. 850-700 T ADVEC -0. 0. 0. 0. -2. -4. -5. -4. -4. -3. -2. -1. -1. -1. -1. -1. ZONAL STORM MOTION 0. 0. -0. -0. -2. -3. -4. -5. -8. -11. -14. -15. -15. -16. -17. -18. 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. 1. 1. 1. 1. 2. 2. 2. GOES PREDICTORS 0. 0. 0. 0. 0. 0. 1. 1. 1. 0. 0. 1. 1. 1. 1. 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. -3. -2. -0. 1. 2. 3. 3. 3. 4. 4. ------------------------------------------------------------------------------ TOTAL CHANGE -9. -14. -17. -19. -26. -42. -62. -79. -91.-107.-118.-129.-144.-156.-166.-170. CURRENT MAX WIND (KT): 45. LAT, LON: 35.3 83.6 ** 2020 ATLANTIC RI INDEX AL282020 ZETA 10/29/20 12 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) : -40.0 -49.5 to 33.0 0.12 999.0 850-200 MB SHEAR (KT) : 66.0 30.1 to 2.3 0.00 0.0 HEAT CONTENT (KJ/CM2) : 0.0 0.0 to 151.8 0.00 0.0 STD DEV OF IR BR TEMP : 18.2 36.6 to 2.8 0.54 999.0 MAXIMUM WIND (KT) : 45.0 22.5 to 137.5 0.59 999.0 2nd PC OF IR BR TEMP : -1.0 2.9 to -2.9 0.67 999.0 BL DRY-AIR FLUX (W/M2) : 166.4 895.4 to -55.0 0.77 999.0 POT = MPI-VMAX (KT) : 41.3 27.5 to 139.6 0.12 999.0 D200 (10**7s-1) : 100.8 -29.7 to 185.9 0.61 999.0 %area of TPW <45 mm upshear : 69.0 100.0 to 0.0 0.31 999.0 SHIPS Prob RI for 20kt/ 12hr RI threshold= 0% is 0.0 times climatological mean ( 5.0%) SHIPS Prob RI for 25kt/ 24hr RI threshold= 0% is 0.0 times climatological mean (10.9%) SHIPS Prob RI for 30kt/ 24hr RI threshold= 0% is 0.0 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: 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% Logistic: 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% Bayesian: 96.1% 0.2% 8.3% 2.6% 0.0% 0.0% 0.0% 0.0% Consensus: 32.0% 0.1% 2.8% 0.9% 0.0% 0.0% 0.0% 0.0% DTOPS: 0.0% 6.0% 2.0% 1.0% 0.0% 0.0% 0.0% 0.0% ## ANNULAR HURRICANE INDEX (AHI) AL282020 ZETA 10/29/20 12 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 AL282020 ZETA 10/29/2020 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) 45 37 35 32 30 23 DIS DIS DIS DIS DIS DIS DIS DIS DIS DIS DIS 18HR AGO 45 44 42 39 37 30 DIS DIS DIS DIS DIS DIS DIS DIS DIS DIS DIS 12HR AGO 45 42 41 38 36 29 DIS DIS DIS DIS DIS DIS DIS DIS DIS DIS DIS 6HR AGO 45 39 36 35 33 26 DIS 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