* ATLANTIC 2021 SHIPS INTENSITY FORECAST * * IR SAT DATA AVAILABLE, OHC AVAILABLE * * MARIA AL152017 09/27/17 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 65 64 61 57 55 50 51 48 40 22 N/A N/A N/A N/A N/A N/A N/A V (KT) LAND 65 64 61 57 55 50 51 48 40 22 N/A N/A N/A N/A N/A N/A N/A V (KT) LGEM 65 65 63 61 58 56 58 57 49 38 28 N/A N/A N/A N/A N/A N/A Storm Type TROP TROP TROP TROP TROP TROP TROP TROP EXTP EXTP EXTP N/A N/A N/A N/A N/A N/A SHEAR (KT) 15 18 16 8 5 6 16 22 28 51 73 N/A N/A N/A N/A N/A N/A SHEAR ADJ (KT) 1 1 2 8 6 3 -1 3 10 22 17 N/A N/A N/A N/A N/A N/A SHEAR DIR 286 310 341 338 274 244 227 245 219 231 237 N/A N/A N/A N/A N/A N/A SST (C) 26.6 26.5 26.6 26.9 26.7 26.3 26.2 19.1 20.2 14.6 13.9 N/A N/A N/A N/A N/A N/A POT. INT. (KT) 118 117 119 123 122 120 122 84 88 77 75 N/A N/A N/A N/A N/A N/A ADJ. POT. INT. 96 95 98 103 104 107 111 80 84 74 73 N/A N/A N/A N/A N/A N/A 200 MB T (C) -49.8 -50.0 -50.3 -50.6 -50.5 -50.6 -50.1 -50.4 -50.4 -49.9 -47.8 N/A N/A N/A N/A N/A N/A 200 MB VXT (C) 1.3 1.6 1.4 0.8 0.4 0.6 0.3 0.8 0.6 0.2 0.2 N/A N/A N/A N/A N/A N/A TH_E DEV (C) 7 6 5 4 3 2 2 0 0 0 0 N/A N/A N/A N/A N/A N/A 700-500 MB RH 59 59 58 56 50 44 41 38 31 27 29 N/A N/A N/A N/A N/A N/A MODEL VTX (KT) 38 36 35 32 31 28 30 29 27 21 8 LOST LOST LOST LOST LOST LOST 850 MB ENV VOR 0 -13 4 21 38 102 122 68 32 28 82 N/A N/A N/A N/A N/A N/A 200 MB DIV 17 -9 -31 -6 18 5 41 42 28 -10 -11 N/A N/A N/A N/A N/A N/A 700-850 TADV 8 3 0 -4 1 -17 -17 -23 -166 -179 -323 N/A N/A N/A N/A N/A N/A LAND (KM) 301 357 403 490 537 645 703 591 897 1555 717 N/A N/A N/A N/A N/A N/A LAT (DEG N) 36.0 36.3 36.5 36.7 36.9 37.6 39.2 41.6 44.7 48.4 52.1 N/A N/A N/A N/A N/A N/A LONG(DEG W) 72.4 71.8 71.2 69.9 68.7 64.6 58.5 51.0 41.9 31.4 20.8 N/A N/A N/A N/A N/A N/A STM SPEED (KT) 5 5 8 10 14 20 28 34 39 39 38 N/A N/A N/A N/A N/A N/A HEAT CONTENT 2 3 5 8 4 0 2 0 0 0 0 N/A N/A N/A N/A N/A N/A FORECAST TRACK FROM OFCI INITIAL HEADING/SPEED (DEG/KT): 25/ 6 CX,CY: 3/ 5 T-12 MAX WIND: 60 PRESSURE OF STEERING LEVEL (MB): 691 (MEAN=620) GOES IR BRIGHTNESS TEMP. STD DEV. 50-200 KM RAD: 18.6 (MEAN=14.5) % GOES IR PIXELS WITH T < -20 C 50-200 KM RAD: 62.0 (MEAN=65.0) PRELIM RI PROB (DV .GE. 35 KT IN 36 HR): 0.3 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. -2. -2. -3. -3. -4. -8. -11. -15. -19. -21. -24. -27. -28. -30. -30. VERTICAL SHEAR MAG -0. -0. 0. 1. 3. 3. 3. 2. -3. -11. -14. -16. -19. -22. -23. -24. VERTICAL SHEAR ADJ -0. -0. -1. -1. -1. -1. -1. -2. -4. -6. -5. -5. -5. -4. -4. -3. VERTICAL SHEAR DIR 0. 0. 0. 0. 1. 2. 4. 5. 6. 7. 8. 9. 10. 10. 10. 10. PERSISTENCE 1. 1. 1. 1. 0. 0. 0. 0. 0. 0. -0. -0. 0. 0. 0. 0. 200/250 MB TEMP. -0. -1. -1. -2. -3. -4. -5. -5. -5. -6. -7. -8. -9. -10. -10. -11. THETA_E EXCESS -0. -0. -1. -1. -2. -2. -3. -3. -3. -3. -1. -0. 0. 1. 2. 3. 700-500 MB RH -0. -0. -0. -0. 0. 1. 1. 2. 3. 4. 4. 4. 5. 5. 5. 5. MODEL VTX TENDENCY -0. -2. -4. -5. -9. -11. -14. -18. -27. -47. -48. -48. -46. -45. -42. -41. 850 MB ENV VORTICITY -0. -0. -0. -0. 0. 1. 1. 1. 1. 2. 2. 2. 2. 2. 2. 3. 200 MB DIVERGENCE -0. -0. -1. -1. -1. -1. -1. -1. -1. -1. -0. 0. 0. 1. 1. 2. 850-700 T ADVEC -0. 0. -0. -0. -0. -1. -1. -3. -4. -4. -1. -0. -1. -1. -0. -1. ZONAL STORM MOTION 0. 0. -0. -0. -0. -1. -1. -1. -2. -2. -3. -3. -4. -4. -4. -4. STEERING LEVEL PRES -0. -0. -0. -0. -1. -1. -0. -1. -1. -1. -2. -2. -1. -1. -1. -1. DAYS FROM CLIM. PEAK 0. -0. -0. -0. 0. 0. 0. 0. 0. -0. -0. -0. -0. -0. -0. -0. GOES PREDICTORS -0. -0. -1. -1. -0. 0. 0. 1. 1. 1. 1. 1. 0. -0. -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. -1. -0. 1. 2. 3. 3. 3. 4. 4. ------------------------------------------------------------------------------ TOTAL CHANGE -1. -4. -7. -10. -15. -14. -17. -25. -43. -74. -74. -75. -78. -77. -74. -74. CURRENT MAX WIND (KT): 65. LAT, LON: 36.0 72.4 ** 2022 ATLANTIC RI INDEX AL152017 MARIA 09/27/17 18 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) : 5.0 -45.0 to 30.0 0.67 4.0 850-200 MB SHEAR (KT) : 12.4 25.9 to 2.2 0.57 1.6 HEAT CONTENT (KJ/CM2) : 4.4 0.0 to 147.0 0.03 0.1 STD DEV OF IR BR TEMP : 18.6 33.3 to 3.1 0.49 1.1 MAXIMUM WIND (KT) : 65.0 25.0 to 125.0 0.93 1.9 2nd PC OF IR BR TEMP : -0.4 2.6 to -2.7 0.56 0.7 BL DRY-AIR FLUX (W/M2) : 327.6 814.0 to -65.0 0.55 0.9 POT = MPI-VMAX (KT) : 34.4 30.0 to 128.0 0.04 0.0 D200 (10**7s-1) : -2.2 -28.0 to 171.0 0.13 0.1 %area of TPW <45 mm upshear : 19.6 95.0 to 0.0 0.79 0.2 SHIPS Prob RI for 20kt/ 12hr RI threshold= 7% is 1.4 times climatological mean ( 4.9%) SHIPS Prob RI for 25kt/ 24hr RI threshold= 15% is 1.3 times climatological mean (10.9%) SHIPS Prob RI for 30kt/ 24hr RI threshold= 11% is 1.6 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: 6.8% 14.7% 10.6% 0.0% 0.0% 0.0% 0.0% 0.0% Logistic: 0.7% 1.1% 0.7% 0.1% 0.0% 0.2% 0.0% 0.0% Bayesian: 0.2% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% Consensus: 2.6% 5.3% 3.8% 0.0% 0.0% 0.1% 0.0% 0.0% ## ANNULAR HURRICANE INDEX (AHI) AL152017 MARIA 09/27/17 18 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 AL152017 MARIA 09/27/2017 18 UTC ** TIME(HR) 0-12 12-24(0-24) 24-36(0-36) 36-48(0-48) CLIMO(%) 2 0( 2) 0( 2) 0( 2) <-- 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) 65 64 61 57 55 50 51 48 40 22 DIS DIS DIS DIS DIS DIS DIS 18HR AGO 65 64 61 57 55 50 51 48 40 22 DIS DIS DIS DIS DIS DIS DIS 12HR AGO 65 62 61 57 55 50 51 48 40 22 DIS DIS DIS DIS DIS DIS DIS 6HR AGO 65 59 56 55 53 48 49 46 38 20 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