* ATLANTIC SHIPS INTENSITY FORECAST * * IR SAT DATA AVAILABLE, OHC AVAILABLE * * JULIA AL112016 09/18/16 00 UTC * TIME (HR) 0 6 12 18 24 36 48 60 72 84 96 108 120 V (KT) NO LAND 25 26 27 28 29 33 38 41 41 41 40 40 39 V (KT) LAND 25 26 27 28 29 33 38 41 41 41 40 40 39 V (KT) LGEM 25 25 25 25 25 25 28 30 34 DIS DIS DIS DIS Storm Type TROP TROP TROP TROP TROP TROP TROP TROP TROP N/A N/A N/A N/A SHEAR (KT) 24 28 26 23 19 15 21 18 23 N/A N/A N/A N/A SHEAR ADJ (KT) 3 -1 -2 0 0 -3 -3 -6 -4 N/A N/A N/A N/A SHEAR DIR 325 344 352 355 346 280 247 241 238 N/A N/A N/A N/A SST (C) 29.1 29.0 28.9 28.8 28.7 28.4 28.2 28.2 28.2 N/A N/A N/A N/A POT. INT. (KT) 150 149 147 146 144 139 135 135 135 N/A N/A N/A N/A ADJ. POT. INT. 121 122 120 119 116 112 108 107 108 N/A N/A N/A N/A 200 MB T (C) -53.5 -53.6 -53.6 -53.6 -53.6 -53.7 -53.6 -54.4 -54.5 N/A N/A N/A N/A 200 MB VXT (C) 0.8 0.5 0.4 0.3 0.2 0.9 1.0 0.9 0.6 N/A N/A N/A N/A TH_E DEV (C) 9 9 8 9 9 7 8 5 7 N/A N/A N/A N/A 700-500 MB RH 43 45 49 54 58 62 52 46 41 N/A N/A N/A N/A MODEL VTX (KT) 9 8 7 7 7 8 8 8 7 LOST LOST LOST LOST 850 MB ENV VOR -77 -90 -71 -40 -16 13 19 -3 -4 N/A N/A N/A N/A 200 MB DIV -16 -21 -11 -8 -5 24 17 18 -1 N/A N/A N/A N/A 700-850 TADV 1 1 0 2 2 2 0 0 2 N/A N/A N/A N/A LAND (KM) 403 363 323 283 244 196 154 135 115 N/A N/A N/A N/A LAT (DEG N) 30.5 30.8 31.0 31.4 31.7 32.3 32.7 32.8 32.9 N/A N/A N/A N/A LONG(DEG W) 76.4 76.7 77.0 77.2 77.4 77.4 77.4 77.7 78.0 N/A N/A N/A N/A STM SPEED (KT) 2 4 4 4 3 2 2 1 2 N/A N/A N/A N/A HEAT CONTENT 40 38 38 40 39 31 23 14 10 0 0 0 0 FORECAST TRACK FROM OFCI INITIAL HEADING/SPEED (DEG/KT):344/ 1 CX,CY: 0/ 1 T-12 MAX WIND: 25 PRESSURE OF STEERING LEVEL (MB): 649 (MEAN=618) GOES IR BRIGHTNESS TEMP. STD DEV. 50-200 KM RAD: 22.0 (MEAN=14.5) % GOES IR PIXELS WITH T < -20 C 50-200 KM RAD: 20.0 (MEAN=65.0) PRELIM RI PROB (DV .GE. 30 KT IN 24 HR): 0.9 INDIVIDUAL CONTRIBUTIONS TO INTENSITY CHANGE 6 12 18 24 36 48 60 72 84 96 108 120 ---------------------------------------------------------- SAMPLE MEAN CHANGE 1. 2. 3. 4. 6. 8. 9. 11. 11. 12. 13. 13. SST POTENTIAL 1. 1. 1. 2. 5. 9. 14. 17. 21. 23. 25. 26. VERTICAL SHEAR MAG 2. 4. 6. 7. 7. 6. 2. -2. -7. -11. -14. -18. VERTICAL SHEAR ADJ 0. 0. 0. 0. 1. 2. 4. 5. 5. 5. 5. 5. VERTICAL SHEAR DIR 0. 0. 0. 0. 0. 1. 2. 3. 4. 4. 5. 5. PERSISTENCE 0. -1. -1. -1. -1. -1. -1. -1. 0. 0. 0. 0. 200/250 MB TEMP. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. THETA_E EXCESS 0. 0. 0. 0. 0. 0. 0. 0. -1. -1. -1. -1. 700-500 MB RH 0. 0. 0. 0. 0. 0. 0. 1. 1. 1. 1. 1. MODEL VTX TENDENCY 0. -1. -1. -2. -2. -3. -4. -6. -7. -7. -8. -9. 850 MB ENV VORTICITY 0. -1. -1. -1. -2. -2. -2. -2. -3. -3. -4. -4. 200 MB DIVERGENCE 0. -1. -1. -1. -1. -1. -1. -1. -1. 0. 1. 2. 850-700 T ADVEC 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. ZONAL STORM MOTION 0. 0. 0. 0. -1. -1. -1. -2. -2. -2. -3. -3. STEERING LEVEL PRES 0. 0. 0. 0. 0. 0. 0. -1. -1. -1. -1. -1. DAYS FROM CLIM. PEAK 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. -1. 0. GOES PREDICTORS -1. -2. -2. -3. -4. -4. -5. -5. -4. -4. -2. -2. OCEAN HEAT CONTENT 0. 0. 0. 0. -1. -1. -1. -1. -1. -1. -1. -1. ---------------------------------------------------------- TOTAL CHANGE 1. 2. 3. 4. 8. 13. 16. 16. 16. 15. 15. 14. CURRENT MAX WIND (KT): 25. LAT, LON: 30.5 76.4 ** 2015 ATLANTIC RI INDEX AL112016 JULIA 09/18/16 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 3.1 850-200 MB SHEAR (KT) : 24.0 28.8 to 2.9 0.19 0.4 HEAT CONTENT (KJ/cm2) : 39.0 0.0 to 155.1 0.25 0.4 STD DEV OF IR BR TEMP : 22.0 37.5 to 2.9 0.45 1.0 2nd PC OF IR BR TEMP : -1.0 2.8 to -3.1 0.65 1.5 MAXIMUM WIND (kt) : 25.0 22.5 to 121.0 0.07 0.1 D200 (10**7s-1) : -12.2 -23.1 to 181.5 0.05 0.0 POT = MPI-VMAX (KT) : 94.7 28.4 to 139.1 0.60 0.8 % AREA WITH TPW <45 mm: 36.3 100.0 to 0.0 0.64 0.3 BL DRY-AIR FLUX (w/m2): 156.2 960.3 to -67.1 0.78 0.0 SHIPS Prob RI for 20kt/ 12hr RI threshold= 5% is 0.9 times sample mean ( 5.5%) SHIPS Prob RI for 25kt/ 24hr RI threshold= 11% is 1.0 times sample mean (11.6%) SHIPS Prob RI for 30kt/ 24hr RI threshold= 8% is 1.1 times sample mean ( 7.2%) SHIPS Prob RI for 35kt/ 24hr RI threshold= 0% is 0.0 times sample mean ( 4.2%) SHIPS Prob RI for 40kt/ 24hr RI threshold= 0% is 0.0 times sample mean ( 2.8%) SHIPS Prob RI for 45kt/ 36hr RI threshold= 0% is 0.0 times sample mean ( 4.9%) SHIPS Prob RI for 55kt/ 48hr RI threshold= 9% is 1.8 times sample mean ( 5.1%) Matrix of RI probabilities --------------------------------------------------------------------- RI (kt / h) | 20/12 | 25/24 | 30/24 | 35/24 | 40/24 | 45/36 | 55/48 --------------------------------------------------------------------- SHIPS-RII: 4.8% 11.5% 7.7% 0.0% 0.0% 0.0% 9.0% Logistic: 0.8% 4.4% 2.1% 0.4% 0.0% 0.5% 1.4% Bayesian: 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% Consensus: 1.9% 5.3% 3.3% 0.1% 0.0% 0.2% 3.5% ## ANNULAR HURRICANE INDEX (AHI) AL112016 JULIA 09/18/16 00 UTC ## ## STORM NOT ANNULAR, SCREENING STEP FAILED, NPASS=4 NFAIL=3 ## ## 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 AL112016 JULIA 09/18/2016 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) PC4 UNAVAIL...MODEL SKILL DEGRADED ** 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 >24HR AGO (DSHIPS) 25 26 27 28 29 33 38 41 41 41 40 40 39 18HR AGO 25 24 25 26 27 31 36 39 39 39 38 38 37 12HR AGO 25 22 21 22 23 27 32 35 35 35 34 34 33 6HR AGO 25 19 16 15 16 20 25 28 28 28 27 27 26 NOW CURRENT INTENSITY < 83 KT IN 6HR INTENSITY IN 6HR < 83 KT IN 12HR INTENSITY IN 12HR < 83 KT