* ATLANTIC 2021 SHIPS INTENSITY FORECAST * * IR SAT DATA AVAILABLE, OHC AVAILABLE * * NINE AL092015 09/18/15 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 25 24 24 23 23 22 20 20 18 17 N/A N/A N/A N/A N/A N/A N/A V (KT) LAND 25 24 24 23 23 22 20 20 18 17 N/A N/A N/A N/A N/A N/A N/A V (KT) LGEM 25 24 23 22 20 18 15 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 TROP TROP TROP TROP TROP N/A N/A N/A N/A N/A N/A SHEAR (KT) 29 29 31 32 33 33 25 26 23 30 24 N/A N/A N/A N/A N/A N/A SHEAR ADJ (KT) 3 0 1 3 2 3 1 0 0 2 2 N/A N/A N/A N/A N/A N/A SHEAR DIR 242 237 238 239 231 222 220 210 210 208 240 N/A N/A N/A N/A N/A N/A SST (C) 28.1 28.2 28.2 28.3 28.4 29.0 29.5 29.6 29.7 29.7 29.8 N/A N/A N/A N/A N/A N/A POT. INT. (KT) 137 138 138 140 142 151 159 161 162 162 164 N/A N/A N/A N/A N/A N/A ADJ. POT. INT. 127 128 128 130 131 138 146 147 145 143 144 N/A N/A N/A N/A N/A N/A 200 MB T (C) -54.1 -54.1 -54.1 -54.2 -54.4 -54.4 -54.7 -54.2 -54.4 -54.1 -54.4 N/A N/A N/A N/A N/A N/A 200 MB VXT (C) -0.1 -0.1 -0.3 -0.4 -0.5 -0.7 -0.7 -0.3 -0.3 -0.5 -0.5 N/A N/A N/A N/A N/A N/A TH_E DEV (C) 8 9 9 9 9 10 10 11 11 12 12 N/A N/A N/A N/A N/A N/A 700-500 MB RH 52 54 54 54 54 53 51 49 45 45 43 N/A N/A N/A N/A N/A N/A MODEL VTX (KT) 8 8 8 7 7 6 5 5 3 4 2 LOST LOST LOST LOST LOST LOST 850 MB ENV VOR 28 39 44 46 44 63 49 72 50 50 11 N/A N/A N/A N/A N/A N/A 200 MB DIV 17 11 -1 4 23 18 18 11 6 -2 -6 N/A N/A N/A N/A N/A N/A 700-850 TADV 0 0 1 2 0 2 -1 2 1 4 4 N/A N/A N/A N/A N/A N/A LAND (KM) 1530 1545 1559 1572 1563 1496 1432 1299 1203 1142 1100 N/A N/A N/A N/A N/A N/A LAT (DEG N) 17.5 18.0 18.4 18.9 19.3 20.0 20.9 21.7 22.6 23.3 24.1 N/A N/A N/A N/A N/A N/A LONG(DEG W) 46.6 47.3 47.9 48.6 49.4 50.8 52.3 53.8 55.1 56.1 57.1 N/A N/A N/A N/A N/A N/A STM SPEED (KT) 8 8 8 8 8 8 8 8 6 6 6 N/A N/A N/A N/A N/A N/A HEAT CONTENT 18 21 23 23 25 36 44 57 40 37 43 N/A N/A N/A N/A N/A N/A FORECAST TRACK FROM OFCI INITIAL HEADING/SPEED (DEG/KT):290/ 7 CX,CY: -6/ 2 T-12 MAX WIND: 25 PRESSURE OF STEERING LEVEL (MB): 794 (MEAN=620) GOES IR BRIGHTNESS TEMP. STD DEV. 50-200 KM RAD: 2.6 (MEAN=14.5) % GOES IR PIXELS WITH T < -20 C 50-200 KM RAD: 0.0 (MEAN=65.0) PRELIM RI PROB (DV .GE. 35 KT IN 36 HR): 0.2 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 0. 0. 1. 1. 4. 9. 15. 20. 25. 29. 32. 36. 39. 40. 42. 41. VERTICAL SHEAR MAG 1. 2. 2. 2. 2. -2. -8. -12. -18. -23. -25. -27. -30. -32. -34. -34. VERTICAL SHEAR ADJ -0. -0. -0. -0. -1. -1. -1. -1. -1. -1. -1. -0. -0. -0. -0. -0. VERTICAL SHEAR DIR -0. -1. -1. -2. -3. -4. -5. -5. -5. -5. -6. -6. -7. -7. -7. -7. 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. 0. 1. 1. 1. 2. 2. 3. 5. 7. 8. THETA_E EXCESS 0. 0. 0. 0. 0. 1. 1. 1. 1. 1. 0. 0. -0. -0. -1. -1. 700-500 MB RH 0. 0. 0. 0. 0. 0. 0. 0. 1. 1. 1. 1. 1. 1. 1. 1. MODEL VTX TENDENCY -0. -0. -1. -2. -3. -5. -7. -11. -11. -15. -16. -16. -16. -16. -16. -16. 850 MB ENV VORTICITY 0. 0. 0. 0. 0. 1. 1. 1. 1. 1. 1. 1. 1. 1. 2. 2. 200 MB DIVERGENCE -0. -0. -0. -1. -1. -1. -1. -1. -1. -1. -0. 0. 1. 1. 1. 2. 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. -1. -1. -1. -1. -1. -1. -2. -3. -4. -3. -2. -2. -2. -3. DAYS FROM CLIM. PEAK 0. -0. -0. -0. 0. 0. 0. 0. 0. -0. -0. -0. -0. -1. -1. -1. GOES PREDICTORS -1. -2. -1. -2. -3. -5. -6. -8. -9. -8. -8. -9. -9. -8. -8. -5. 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. 4. 4. 4. ------------------------------------------------------------------------------ TOTAL CHANGE -1. -1. -2. -2. -3. -5. -5. -7. -8. -10. -9. -6. -4. -1. 3. 6. CURRENT MAX WIND (KT): 25. LAT, LON: 17.5 46.6 ** 2022 ATLANTIC RI INDEX AL092015 NINE 09/18/15 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 0.60 999.0 850-200 MB SHEAR (KT) : 30.8 28.5 to 2.0 0.00 0.0 HEAT CONTENT (KJ/CM2) : 22.0 0.0 to 161.7 0.14 999.0 STD DEV OF IR BR TEMP : 2.6 36.6 to 2.8 1.00 999.0 MAXIMUM WIND (KT) : 25.0 22.5 to 137.5 0.07 999.0 BL DRY-AIR FLUX (W/M2) : 152.0 895.4 to -71.5 0.77 999.0 POT = MPI-VMAX (KT) : 103.8 27.0 to 140.8 0.68 999.0 2nd PC OF IR BR TEMP : 1.3 2.9 to -3.0 0.27 999.0 D200 (10**7s-1) : 10.8 -30.8 to 188.1 0.19 999.0 %area of TPW <45 mm upshear : 39.3 104.5 to 0.0 0.62 999.0 SHIPS Prob RI for 20kt/ 12hr RI threshold= 5% is 1.0 times climatological mean ( 4.9%) SHIPS Prob RI for 25kt/ 24hr RI threshold= 10% is 0.9 times climatological mean (10.9%) SHIPS Prob RI for 30kt/ 24hr RI threshold= 0% is 0.0 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: 4.9% 10.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% Logistic: 1.0% 1.4% 0.9% 0.7% 0.1% 0.6% 0.4% 4.4% Bayesian: 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% Consensus: 2.0% 3.8% 0.3% 0.2% 0.0% 0.2% 0.1% 1.5% ## ANNULAR HURRICANE INDEX (AHI) AL092015 NINE 09/18/15 12 UTC ## ## STORM NOT ANNULAR, SCREENING STEP FAILED, NPASS=3 NFAIL=4 ## ## 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 AL092015 NINE 09/18/2015 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) 25 24 24 23 23 22 20 20 18 17 DIS DIS DIS DIS DIS DIS DIS 18HR AGO 25 24 24 23 23 22 20 20 18 17 DIS DIS DIS DIS DIS DIS DIS 12HR AGO 25 22 21 20 20 19 17 17 15 DIS DIS DIS DIS DIS DIS DIS DIS 6HR AGO 25 19 16 15 15 DIS 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