* GFS version * * ATLANTIC 2020 SHIPS INTENSITY FORECAST * * IR SAT DATA AVAILABLE, OHC AVAILABLE * * ZETA AL282020 10/29/20 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 45 41 37 37 34 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) LAND 45 42 39 38 35 24 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 40 35 31 27 N/A 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 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A SHEAR (KT) 59 71 92 102 99 N/A 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) 11 10 4 -3 -2 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A SHEAR DIR 254 251 251 254 262 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A SST (C) 19.3 18.7 15.9 21.1 18.1 N/A 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) 86 84 79 92 83 N/A 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. 83 81 76 87 79 N/A 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) -51.6 -51.9 -52.0 -52.3 -52.9 N/A 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) 0.0 -0.2 -0.3 0.1 0.1 N/A 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 N/A 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 57 59 57 54 N/A 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) 21 23 22 26 25 LOST LOST LOST LOST LOST LOST LOST LOST LOST LOST LOST LOST 850 MB ENV VOR 111 96 70 63 94 N/A 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 121 82 60 52 59 N/A 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 161 31 -68 -161 -152 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A LAND (KM) -209 153 277 354 368 N/A 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) 37.8 39.5 41.1 42.3 43.4 N/A 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) 78.2 72.3 66.4 59.5 52.7 N/A 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) 49 48 50 52 51 N/A 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 N/A 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): 60/ 48 CX,CY: 42/ 24 T-12 MAX WIND: 60 PRESSURE OF STEERING LEVEL (MB): 582 (MEAN=620) GOES IR BRIGHTNESS TEMP. STD DEV. 50-200 KM RAD: 16.5 (MEAN=14.5) % GOES IR PIXELS WITH T < -20 C 50-200 KM RAD: 55.0 (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 -1. -2. -3. -3. -4. -4. -5. -5. -5. -5. -6. -8. -10. -11. -12. -13. VERTICAL SHEAR MAG 0. -0. -1. -3. -12. -29. -52. -73. -90.-107.-121.-132.-147.-159.-166.-170. VERTICAL SHEAR ADJ -1. -1. -1. -1. -2. -2. -3. -3. -3. -3. -2. -2. -2. -2. -1. -1. VERTICAL SHEAR DIR 0. 1. 1. 2. 3. 5. 6. 8. 8. 9. 10. 12. 13. 13. 13. 13. PERSISTENCE -3. -5. -5. -5. -3. -2. -2. -2. -1. -0. 0. 0. -1. -2. -4. -3. 200/250 MB TEMP. -1. -1. -2. -2. -2. -3. -2. -2. -2. -2. -2. -3. -3. -2. -0. 0. 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. -1. -1. -1. -1. -1. -1. -1. -2. -2. -1. MODEL VTX TENDENCY 0. 0. 2. 2. 2. 2. 2. 1. 1. -0. -1. -2. -2. -3. -3. -3. 850 MB ENV VORTICITY 0. 1. 1. 1. 1. 2. 3. 3. 3. 4. 4. 5. 5. 5. 5. 6. 200 MB DIVERGENCE 0. 1. 1. 1. 1. 1. 2. 2. 2. 1. -0. -1. -2. -3. -3. -4. 850-700 T ADVEC -0. 0. -0. -1. -2. -4. -5. -5. -4. -3. -2. -1. -1. -1. -1. -1. ZONAL STORM MOTION 0. 0. -0. -1. -3. -5. -6. -8. -11. -16. -20. -21. -21. -22. -23. -24. 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. -1. -1. -1. -1. -1. -1. -1. -2. -1. -1. -1. 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. -8. -8. -11. -22. -39. -62. -82. -98.-116.-130.-143.-158.-169.-177.-182. CURRENT MAX WIND (KT): 45. LAT, LON: 37.8 78.2 ** 2020 ATLANTIC RI INDEX AL282020 ZETA 10/29/20 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 0.42 999.0 850-200 MB SHEAR (KT) : 84.7 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 : 16.5 36.6 to 2.8 0.59 999.0 MAXIMUM WIND (KT) : 45.0 22.5 to 137.5 0.59 999.0 2nd PC OF IR BR TEMP : -0.6 2.9 to -2.9 0.60 999.0 BL DRY-AIR FLUX (W/M2) : 137.2 895.4 to -55.0 0.80 999.0 POT = MPI-VMAX (KT) : 36.4 27.5 to 139.6 0.08 999.0 D200 (10**7s-1) : 74.8 -29.7 to 185.9 0.48 999.0 %area of TPW <45 mm upshear : 61.8 100.0 to 0.0 0.38 999.0 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= 999% is 999.0 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% 999.0% Logistic: 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 999.0% Bayesian: 0.8% 0.0% 0.1% 0.0% 0.0% 0.0% 0.0% 999.0% Consensus: 0.3% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 999.0% DTOPS: 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% ## ANNULAR HURRICANE INDEX (AHI) AL282020 ZETA 10/29/20 18 UTC ## ## STORM NOT ANNULAR, SCREENING STEP FAILED, NPASS=1 NFAIL=6 ## ## 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 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) 45 42 39 38 35 24 DIS DIS DIS DIS DIS DIS DIS DIS DIS DIS DIS 18HR AGO 45 44 41 40 37 26 DIS DIS DIS DIS DIS DIS DIS DIS DIS DIS DIS 12HR AGO 45 42 41 40 37 26 DIS DIS DIS DIS DIS DIS DIS DIS DIS DIS DIS 6HR AGO 45 39 36 35 32 21 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