* GFS version * * ATLANTIC 2021 SHIPS INTENSITY FORECAST * * IR SAT DATA AVAILABLE, OHC AVAILABLE * * ELSA AL052021 07/08/21 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 40 41 42 44 46 46 41 30 28 24 19 N/A N/A N/A N/A N/A N/A V (KT) LAND 40 34 31 30 35 34 30 21 19 16 N/A N/A N/A N/A N/A N/A N/A V (KT) LGEM 40 34 31 29 33 34 32 30 27 N/A N/A N/A N/A N/A N/A N/A N/A Storm Type TROP TROP TROP TROP TROP EXTP EXTP EXTP EXTP N/A N/A N/A N/A N/A N/A N/A N/A SHEAR (KT) 14 14 12 14 22 46 59 51 28 N/A N/A N/A N/A N/A N/A N/A N/A SHEAR ADJ (KT) 4 4 4 0 0 -2 0 5 6 N/A N/A N/A N/A N/A N/A N/A N/A SHEAR DIR 257 259 268 237 211 217 218 228 231 N/A N/A N/A N/A N/A N/A N/A N/A SST (C) 28.3 27.2 27.6 24.5 21.4 12.1 12.2 8.5 7.8 N/A N/A N/A N/A N/A N/A N/A N/A POT. INT. (KT) 144 130 136 107 90 72 74 71 70 N/A N/A N/A N/A N/A N/A N/A N/A ADJ. POT. INT. 127 115 122 97 83 71 72 70 69 N/A N/A N/A N/A N/A N/A N/A N/A 200 MB T (C) -54.0 -53.9 -54.1 -53.8 -54.2 -53.5 -51.6 -49.2 -47.0 N/A N/A N/A N/A N/A N/A N/A N/A 200 MB VXT (C) 0.0 0.0 0.0 -0.2 0.0 -0.3 -0.5 -0.8 -0.1 N/A N/A N/A N/A N/A N/A N/A N/A TH_E DEV (C) 5 8 6 2 1 0 0 0 0 N/A N/A N/A N/A N/A N/A N/A N/A 700-500 MB RH 71 74 73 67 63 54 49 58 56 N/A N/A N/A N/A N/A N/A N/A N/A MODEL VTX (KT) 15 15 14 15 17 16 15 13 15 LOST LOST LOST LOST LOST LOST LOST LOST 850 MB ENV VOR -48 0 39 88 110 64 104 114 151 N/A N/A N/A N/A N/A N/A N/A N/A 200 MB DIV 42 75 96 50 57 48 14 14 61 N/A N/A N/A N/A N/A N/A N/A N/A 700-850 TADV -1 32 45 15 26 -13 -69 -89 -3 N/A N/A N/A N/A N/A N/A N/A N/A LAND (KM) -151 -170 -128 -3 6 7 74 487 1152 N/A N/A N/A N/A N/A N/A N/A N/A LAT (DEG N) 34.2 35.7 37.2 39.0 40.8 44.7 49.6 54.5 59.0 N/A N/A N/A N/A N/A N/A N/A N/A LONG(DEG W) 80.5 79.0 77.4 74.9 72.4 67.1 59.0 48.8 40.5 N/A N/A N/A N/A N/A N/A N/A N/A STM SPEED (KT) 18 20 23 26 27 32 39 36 31 N/A N/A N/A N/A N/A N/A N/A N/A HEAT CONTENT 3 1 2 0 0 0 0 0 0 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): 35/ 16 CX,CY: 9/ 13 T-12 MAX WIND: 40 PRESSURE OF STEERING LEVEL (MB): 715 (MEAN=620) GOES IR BRIGHTNESS TEMP. STD DEV. 50-200 KM RAD: 21.3 (MEAN=14.5) % GOES IR PIXELS WITH T < -20 C 50-200 KM RAD: 52.0 (MEAN=65.0) PRELIM RI PROB (DV .GE. 35 KT IN 36 HR): 1.0 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. 15. 15. 16. SST POTENTIAL 1. 1. 1. 1. 1. 1. 1. -0. 0. 1. -1. -3. -4. -5. -7. -8. VERTICAL SHEAR MAG 1. 2. 3. 4. 5. 1. -8. -14. -20. -26. -32. -39. -47. -53. -55. -56. VERTICAL SHEAR ADJ -0. -0. -0. -0. -0. -0. -0. -1. -1. -1. -1. -1. -1. -1. -1. -0. VERTICAL SHEAR DIR 0. 0. 1. 1. 3. 4. 6. 7. 8. 8. 9. 10. 12. 12. 12. 12. 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. -0. -1. -0. 1. 1. 1. 1. 0. 2. 3. 3. THETA_E EXCESS -0. -0. -1. -1. -2. -3. -4. -3. -3. -3. -1. -0. 0. 1. 2. 4. 700-500 MB RH -0. -0. -1. -1. -1. -2. -2. -2. -3. -3. -3. -3. -4. -4. -5. -4. MODEL VTX TENDENCY -0. -1. -0. 1. -0. -2. -6. -4. -5. -6. -7. -7. -8. -8. -8. -8. 850 MB ENV VORTICITY -0. -0. -0. 0. 1. 1. 2. 2. 3. 3. 3. 4. 4. 4. 5. 5. 200 MB DIVERGENCE 0. 0. 1. 1. 1. 1. 1. 1. 1. 1. 0. -0. -0. -1. -1. -1. 850-700 T ADVEC -0. 0. 0. 0. 1. 0. -2. -2. -1. -1. -0. -0. -0. -0. -0. -0. ZONAL STORM MOTION 0. 0. -0. -0. -1. -1. -2. -2. -3. -4. -6. -6. -6. -7. -7. -7. STEERING LEVEL PRES -0. -0. -0. -0. -1. -1. -0. -1. -1. -2. -2. -2. -1. -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 -0. -0. -0. -1. -1. -1. -1. -1. -1. -1. -1. -1. -2. -2. -2. -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. -2. -4. -4. -3. -1. -0. 1. 2. 3. 3. 3. 4. 3. ------------------------------------------------------------------------------ TOTAL CHANGE 1. 2. 4. 7. 6. 1. -10. -12. -16. -21. -26. -32. -40. -43. -44. -45. CURRENT MAX WIND (KT): 40. LAT, LON: 34.2 80.5 ** 2021 ATLANTIC RI INDEX AL052021 ELSA 07/08/21 12 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) : 0.0 -49.5 to 33.0 0.60 2.4 850-200 MB SHEAR (KT) : 15.3 30.1 to 2.3 0.53 1.0 HEAT CONTENT (KJ/CM2) : 1.2 0.0 to 151.8 0.01 0.0 STD DEV OF IR BR TEMP : 21.3 36.6 to 2.8 0.45 0.9 MAXIMUM WIND (KT) : 40.0 22.5 to 137.5 0.46 0.7 BL DRY-AIR FLUX (W/M2) : 155.0 895.4 to -55.0 0.78 1.2 2nd PC OF IR BR TEMP : -0.6 2.9 to -2.9 0.61 0.7 POT = MPI-VMAX (KT) : 69.0 28.3 to 146.3 0.34 0.2 D200 (10**7s-1) : 64.0 -29.7 to 185.9 0.43 0.3 %area of TPW <45 mm upshear : 0.0 100.0 to 0.0 1.00 0.1 SHIPS Prob RI for 20kt/ 12hr RI threshold= 3% is 0.7 times climatological mean ( 4.9%) SHIPS Prob RI for 25kt/ 24hr RI threshold= 11% 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= 6% is 1.6 times climatological mean ( 3.9%) SHIPS Prob RI for 40kt/ 24hr RI threshold= 0% is 0.0 times climatological mean ( 2.4%) 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 ( 4.7%) 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: 3.4% 10.5% 7.4% 6.4% 0.0% 0.0% 0.0% 0.0% Logistic: 1.3% 2.1% 0.6% 0.1% 0.0% 0.2% 0.0% 0.0% Bayesian: 0.7% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% Consensus: 1.8% 4.2% 2.7% 2.2% 0.0% 0.1% 0.0% 0.0% DTOPS: 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% ## ANNULAR HURRICANE INDEX (AHI) AL052021 ELSA 07/08/21 12 UTC ## ## STORM NOT ANNULAR, SCREENING STEP FAILED, NPASS=5 NFAIL=2 ## ## 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 AL052021 ELSA 07/08/2021 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) 40 34 31 30 35 34 30 21 19 16 DIS DIS DIS DIS DIS DIS DIS 18HR AGO 40 39 36 35 40 39 35 26 24 21 DIS DIS DIS DIS DIS DIS DIS 12HR AGO 40 37 36 35 40 39 35 26 24 21 DIS DIS DIS DIS DIS DIS DIS 6HR AGO 40 34 31 30 35 34 30 21 19 16 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