* GFS version * * ATLANTIC 2021 SHIPS INTENSITY FORECAST * * IR SAT DATA AVAILABLE, OHC AVAILABLE * * WANDA AL212021 11/06/21 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 45 46 46 47 48 53 46 29 36 38 40 40 38 36 35 33 33 V (KT) LAND 45 46 46 47 48 53 46 29 36 38 40 40 38 36 35 33 33 V (KT) LGEM 45 45 46 47 49 55 51 43 41 N/A N/A N/A N/A N/A N/A N/A N/A Storm Type EXTP EXTP EXTP TROP TROP EXTP EXTP EXTP EXTP N/A N/A N/A N/A N/A N/A N/A N/A SHEAR (KT) 13 5 1 4 13 17 47 44 24 N/A N/A N/A N/A N/A N/A N/A N/A SHEAR ADJ (KT) 0 0 2 0 -6 12 18 23 21 N/A N/A N/A N/A N/A N/A N/A N/A SHEAR DIR 224 231 312 334 335 203 198 204 235 N/A N/A N/A N/A N/A N/A N/A N/A SST (C) 22.0 22.1 22.3 22.3 22.4 19.9 17.0 13.6 9.2 N/A N/A N/A N/A N/A N/A N/A N/A POT. INT. (KT) 86 85 85 85 90 84 80 76 73 N/A N/A N/A N/A N/A N/A N/A N/A ADJ. POT. INT. 75 74 73 73 80 78 76 73 71 N/A N/A N/A N/A N/A N/A N/A N/A 200 MB T (C) -58.0 -58.3 -58.3 -59.0 -59.5 -59.9 -58.4 -56.3 -55.8 N/A N/A N/A N/A N/A N/A N/A N/A 200 MB VXT (C) 1.6 1.4 0.9 0.0 -0.1 0.1 -0.8 -0.4 -0.8 N/A N/A N/A N/A N/A N/A N/A N/A TH_E DEV (C) 2 3 4 4 2 0 0 0 0 N/A N/A N/A N/A N/A N/A N/A N/A 700-500 MB RH 38 38 39 41 48 43 38 42 63 N/A N/A N/A N/A N/A N/A N/A N/A MODEL VTX (KT) 18 17 15 14 13 15 13 6 13 LOST LOST LOST LOST LOST LOST LOST LOST 850 MB ENV VOR -6 8 15 -11 2 -22 -70 -27 132 N/A N/A N/A N/A N/A N/A N/A N/A 200 MB DIV 0 -12 -6 12 9 53 43 36 -14 N/A N/A N/A N/A N/A N/A N/A N/A 700-850 TADV -4 -1 0 1 4 -24 -80 -109 53 N/A N/A N/A N/A N/A N/A N/A N/A LAND (KM) 1549 1600 1652 1669 1688 1740 1431 606 406 N/A N/A N/A N/A N/A N/A N/A N/A LAT (DEG N) 38.4 37.9 37.3 37.5 37.6 41.1 45.9 52.4 62.1 N/A N/A N/A N/A N/A N/A N/A N/A LONG(DEG W) 37.9 37.8 37.6 37.1 36.7 32.8 27.5 19.2 6.3 N/A N/A N/A N/A N/A N/A N/A N/A STM SPEED (KT) 8 6 3 4 13 27 37 51 58 N/A N/A N/A N/A N/A N/A N/A N/A HEAT CONTENT 0 0 0 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):185/ 12 CX,CY: 0/-11 T-12 MAX WIND: 45 PRESSURE OF STEERING LEVEL (MB): 705 (MEAN=620) GOES IR BRIGHTNESS TEMP. STD DEV. 50-200 KM RAD: 16.8 (MEAN=14.5) % GOES IR PIXELS WITH T < -20 C 50-200 KM RAD: 23.0 (MEAN=65.0) PRELIM RI PROB (DV .GE. 35 KT IN 36 HR): 1.2 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 -2. -3. -5. -6. -6. -7. -7. -9. -10. -11. -13. -16. -18. -20. -21. -22. VERTICAL SHEAR MAG 1. 2. 4. 5. 6. 4. -0. -4. -6. -9. -13. -17. -22. -25. -26. -26. VERTICAL SHEAR ADJ 0. -0. 0. 1. -0. -3. -7. -10. -9. -8. -7. -7. -7. -6. -6. -4. VERTICAL SHEAR DIR 0. 0. 1. 1. 2. 3. 4. 5. 5. 6. 6. 7. 8. 8. 8. 8. PERSISTENCE -0. -1. -1. -1. -0. -0. -0. -0. -0. 0. 0. 0. -0. -0. -1. -0. 200/250 MB TEMP. 2. 5. 7. 9. 13. 15. 18. 22. 25. 27. 29. 31. 32. 32. 30. 28. THETA_E EXCESS -0. -1. -1. -1. -3. -3. -4. -4. -4. -3. -1. -0. 0. 1. 3. 4. 700-500 MB RH 0. 0. 1. 1. 1. 2. 3. 3. 3. 3. 3. 3. 4. 4. 4. 4. MODEL VTX TENDENCY -0. -1. -3. -4. -3. -7. -17. -10. -11. -12. -13. -13. -13. -13. -13. -13. 850 MB ENV VORTICITY -0. -0. -0. -0. -1. -1. -2. -1. -2. -2. -2. -2. -2. -2. -3. -3. 200 MB DIVERGENCE -0. -0. -1. -1. -1. -1. -1. -1. -1. -0. -0. 0. 0. 0. 1. 1. 850-700 T ADVEC 0. -0. -0. -0. -0. -2. -4. -3. -2. -2. -1. -0. -1. -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. -1. -1. -0. -1. -1. -1. -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 -1. -1. -1. -2. -2. -3. -3. -4. -4. -4. -4. -5. -5. -5. -5. -3. OCEAN HEAT CONTENT 0. 0. 0. 0. 0. 0. -0. -0. -0. -0. -0. -0. -0. -0. -0. -0. RI POTENTIAL -0. -1. -1. -2. -4. -4. -3. -1. -0. 1. 2. 3. 3. 3. 3. 3. ------------------------------------------------------------------------------ TOTAL CHANGE 1. 1. 2. 3. 8. 1. -16. -9. -7. -5. -5. -7. -9. -10. -12. -12. CURRENT MAX WIND (KT): 45. LAT, LON: 38.4 37.9 ** 2021 ATLANTIC RI INDEX AL212021 WANDA 11/06/21 00 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 2.3 850-200 MB SHEAR (KT) : 7.4 30.1 to 2.3 0.82 1.5 HEAT CONTENT (KJ/CM2) : 0.0 0.0 to 151.8 0.00 0.0 STD DEV OF IR BR TEMP : 16.8 36.6 to 2.8 0.59 1.1 MAXIMUM WIND (KT) : 45.0 22.5 to 137.5 0.59 0.9 BL DRY-AIR FLUX (W/M2) : 337.2 895.4 to -55.0 0.59 0.9 2nd PC OF IR BR TEMP : 0.3 2.9 to -2.9 0.45 0.5 POT = MPI-VMAX (KT) : 29.9 28.3 to 146.3 0.01 0.0 D200 (10**7s-1) : 0.6 -29.7 to 185.9 0.14 0.1 %area of TPW <45 mm upshear : 99.9 100.0 to 0.0 0.00 0.0 SHIPS Prob RI for 20kt/ 12hr RI threshold= 4% is 0.8 times climatological mean ( 4.9%) SHIPS Prob RI for 25kt/ 24hr RI threshold= 9% is 0.9 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= 0% is 0.0 times climatological mean ( 3.9%) SHIPS Prob RI for 40kt/ 24hr RI threshold= 0% is 0.0 times climatological mean ( 2.4%) 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: 4.1% 9.3% 7.2% 0.0% 0.0% 0.0% 0.0% 0.0% Logistic: 1.3% 1.9% 1.1% 0.3% 0.1% 0.4% 0.0% 0.0% Bayesian: 0.3% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% Consensus: 1.9% 3.7% 2.8% 0.1% 0.0% 0.1% 0.0% 0.0% DTOPS: 0.0% 1.0% 0.0% 0.0% 0.0% 0.0% 0.0% 1.0% ## ANNULAR HURRICANE INDEX (AHI) AL212021 WANDA 11/06/21 00 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 AL212021 WANDA 11/06/2021 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) 45 46 46 47 48 53 46 29 36 38 40 40 38 36 35 33 33 18HR AGO 45 44 44 45 46 51 44 27 34 36 38 38 36 34 33 31 31 12HR AGO 45 42 41 42 43 48 41 24 31 33 35 35 33 31 30 28 28 6HR AGO 45 39 36 35 36 41 34 17 24 26 28 28 26 24 23 21 21 NOW CURRENT INTENSITY < 83 KT IN 6HR INTENSITY IN 6HR < 83 KT IN 12HR INTENSITY IN 12HR < 83 KT