* GFS version * * ATLANTIC 2020 SHIPS INTENSITY FORECAST * * IR SAT DATA AVAILABLE, OHC AVAILABLE * * HANNA AL082020 07/26/20 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 70 72 72 71 68 59 54 52 50 49 48 48 49 49 48 47 44 V (KT) LAND 70 53 42 35 31 28 27 27 27 27 27 27 27 27 27 27 27 V (KT) LGEM 70 53 41 35 31 28 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A Storm Type TROP TROP TROP TROP TROP TROP N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A SHEAR (KT) 16 26 25 17 13 16 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) -2 0 -1 -2 0 1 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A SHEAR DIR 330 336 352 354 325 360 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A SST (C) 29.7 29.6 29.3 29.2 29.2 27.8 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) 163 161 156 154 154 132 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. 142 141 136 136 135 115 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) -50.6 -50.9 -51.0 -50.8 -50.4 -51.2 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) 1.8 1.9 1.3 1.0 0.9 1.0 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) 13 12 11 13 14 9 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 63 61 64 67 68 71 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) 23 20 20 18 14 9 LOST LOST LOST LOST LOST LOST LOST LOST LOST LOST LOST 850 MB ENV VOR 39 35 30 45 33 14 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 21 23 32 41 43 30 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 -2 1 -3 -10 0 8 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A LAND (KM) -16 -97 -182 -259 -322 -441 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) 26.7 26.4 26.1 25.8 25.4 25.1 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) 97.6 98.4 99.2 100.0 100.8 102.1 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) 7 8 8 8 7 6 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A HEAT CONTENT 31 5 4 5 8 3 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):260/ 7 CX,CY: -6/ 0 T-12 MAX WIND: 65 PRESSURE OF STEERING LEVEL (MB): 558 (MEAN=620) GOES IR BRIGHTNESS TEMP. STD DEV. 50-200 KM RAD: 8.4 (MEAN=14.5) % GOES IR PIXELS WITH T < -20 C 50-200 KM RAD: 99.0 (MEAN=65.0) PRELIM RI PROB (DV .GE. 35 KT IN 36 HR): 1.8 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. 4. 3. 2. 1. 0. -0. -1. -1. -1. -2. -4. -5. -6. VERTICAL SHEAR MAG -1. -3. -4. -5. -5. -6. -5. -5. -5. -5. -4. -4. -3. -3. -3. -4. VERTICAL SHEAR ADJ 0. 0. 1. 1. 1. 1. 2. 2. 2. 2. 2. 2. 2. 1. 1. 1. VERTICAL SHEAR DIR -0. 0. 0. 0. 0. 0. 0. 0. 1. 1. 1. 1. 1. 1. 1. 1. PERSISTENCE 1. 1. 1. 1. 0. 0. 0. 0. 0. -0. -0. -0. 0. 0. 0. 0. 200/250 MB TEMP. 0. -0. -1. -1. -3. -4. -4. -5. -5. -6. -7. -8. -10. -11. -13. -14. THETA_E EXCESS 0. 1. 1. 1. 1. 2. 1. 1. 1. 1. 1. 1. 1. 0. 0. -0. 700-500 MB RH -0. -0. -0. -1. -1. -2. -3. -4. -4. -4. -4. -4. -4. -5. -5. -4. MODEL VTX TENDENCY -1. -1. -3. -7. -12. -16. -19. -21. -23. -24. -25. -25. -25. -24. -23. -22. 850 MB ENV VORTICITY 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 200 MB DIVERGENCE -0. -0. -0. -0. -0. -0. -0. -0. -0. -0. 0. 0. 0. 0. -0. -0. 850-700 T ADVEC 0. -0. -0. -0. -0. -0. -0. -0. -0. -0. -0. -0. -0. -0. -0. -0. ZONAL STORM MOTION -0. -0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. -0. -0. -0. -0. STEERING LEVEL PRES 0. 0. 0. 0. 0. 0. 0. 0. 1. 1. 1. 1. 1. 0. 0. 1. DAYS FROM CLIM. PEAK -0. 0. 0. 0. 0. -0. -0. 0. 0. 1. 1. 1. 1. 2. 2. 2. GOES PREDICTORS 1. 1. 2. 2. 2. 2. 2. 2. 2. 1. 1. 2. 3. 3. 3. 2. 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. -3. -3. -2. -1. -0. 1. 2. 2. 3. 3. 3. 3. ------------------------------------------------------------------------------ TOTAL CHANGE 2. 2. 1. -2. -11. -16. -18. -20. -21. -22. -22. -21. -21. -22. -23. -26. CURRENT MAX WIND (KT): 70. LAT, LON: 26.7 97.6 ** 2020 ATLANTIC RI INDEX AL082020 HANNA 07/26/20 00 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) : 5.0 -49.5 to 33.0 0.66 5.5 850-200 MB SHEAR (KT) : 19.7 30.1 to 2.3 0.37 1.2 HEAT CONTENT (KJ/CM2) : 10.6 0.0 to 151.8 0.07 0.2 STD DEV OF IR BR TEMP : 8.4 36.6 to 2.8 0.83 2.9 MAXIMUM WIND (KT) : 70.0 22.5 to 137.5 0.88 1.6 2nd PC OF IR BR TEMP : -0.0 2.9 to -2.9 0.51 1.1 BL DRY-AIR FLUX (W/M2) : 166.4 895.4 to -55.0 0.77 1.6 POT = MPI-VMAX (KT) : 67.9 27.5 to 139.6 0.36 0.3 D200 (10**7s-1) : 32.0 -29.7 to 185.9 0.29 0.1 %area of TPW <45 mm upshear : 0.0 100.0 to 0.0 1.00 0.2 SHIPS Prob RI for 20kt/ 12hr RI threshold= 9% is 1.8 times climatological mean ( 5.0%) SHIPS Prob RI for 25kt/ 24hr RI threshold= 20% is 1.8 times climatological mean (10.9%) SHIPS Prob RI for 30kt/ 24hr RI threshold= 15% is 2.1 times climatological mean ( 6.9%) SHIPS Prob RI for 35kt/ 24hr RI threshold= 13% is 3.2 times climatological mean ( 3.9%) SHIPS Prob RI for 40kt/ 24hr RI threshold= 11% is 4.3 times climatological mean ( 2.5%) SHIPS Prob RI for 45kt/ 36hr RI threshold= 12% is 2.6 times climatological mean ( 4.6%) SHIPS Prob RI for 55kt/ 48hr RI threshold= 10% is 2.1 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: 8.8% 20.1% 14.7% 12.7% 10.8% 11.8% 9.6% 0.0% Logistic: 7.5% 11.2% 7.9% 4.7% 2.0% 2.3% 2.0% 0.6% Bayesian: 3.8% 7.0% 2.8% 2.0% 0.5% 0.7% 0.1% 2.8% Consensus: 6.7% 12.8% 8.5% 6.5% 4.4% 4.9% 3.9% 1.1% DTOPS: 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% ## ANNULAR HURRICANE INDEX (AHI) AL082020 HANNA 07/26/20 00 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 AL082020 HANNA 07/26/2020 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) 70 53 42 35 31 28 27 27 27 27 27 27 27 27 27 27 27 18HR AGO 70 69 58 51 47 44 43 43 43 43 43 43 43 43 43 43 43 12HR AGO 70 67 66 59 55 52 51 51 51 51 51 51 51 51 51 51 51 6HR AGO 70 64 61 60 56 53 52 52 52 52 52 52 52 52 52 52 52 NOW CURRENT INTENSITY < 83 KT IN 6HR INTENSITY IN 6HR < 83 KT IN 12HR INTENSITY IN 12HR < 83 KT