* ATLANTIC 2019 SHIPS INTENSITY FORECAST * * IR SAT DATA AVAILABLE, OHC AVAILABLE * * IMELDA AL112019 09/17/19 18 UTC * TIME (HR) 0 6 12 18 24 36 48 60 72 84 96 108 120 V (KT) NO LAND 35 41 45 48 51 54 56 54 54 51 48 46 46 V (KT) LAND 35 33 31 29 28 27 27 27 27 27 27 27 27 V (KT) LGEM 35 33 31 29 28 27 27 27 DIS DIS DIS DIS DIS Storm Type TROP TROP TROP TROP TROP TROP TROP TROP N/A N/A N/A N/A N/A SHEAR (KT) 7 8 14 16 14 28 33 41 N/A N/A N/A N/A N/A SHEAR ADJ (KT) -3 -3 -6 -6 -6 -4 -4 0 N/A N/A N/A N/A N/A SHEAR DIR 334 280 282 297 296 288 291 293 N/A N/A N/A N/A N/A SST (C) 29.8 30.1 30.4 30.7 30.8 30.9 30.9 31.0 N/A N/A N/A N/A N/A POT. INT. (KT) 164 169 169 168 168 168 169 169 N/A N/A N/A N/A N/A ADJ. POT. INT. 137 140 144 149 149 151 153 154 N/A N/A N/A N/A N/A 200 MB T (C) -53.3 -53.0 -53.0 -53.1 -52.9 -53.0 -52.7 -52.5 N/A N/A N/A N/A N/A 200 MB VXT (C) -0.1 -0.1 -0.1 0.0 0.1 0.1 0.3 1.0 N/A N/A N/A N/A N/A TH_E DEV (C) 10 11 9 7 11 8 10 7 N/A N/A N/A N/A N/A 700-500 MB RH 47 45 44 47 48 46 55 58 N/A N/A N/A N/A N/A MODEL VTX (KT) 9 10 8 9 8 7 7 6 LOST LOST LOST LOST LOST 850 MB ENV VOR -56 -74 -97 -71 -40 -56 -52 -63 N/A N/A N/A N/A N/A 200 MB DIV -6 5 -12 -23 -3 6 16 39 N/A N/A N/A N/A N/A 700-850 TADV 4 8 6 5 6 2 0 9 N/A N/A N/A N/A N/A LAND (KM) -6 -28 -51 -87 -125 -194 -270 -405 N/A N/A N/A N/A N/A LAT (DEG N) 29.0 29.4 29.8 30.2 30.5 31.1 31.7 32.8 N/A N/A N/A N/A N/A LONG(DEG W) 95.3 95.2 95.2 95.3 95.4 95.6 96.0 96.6 N/A N/A N/A N/A N/A STM SPEED (KT) 5 4 4 4 3 3 5 6 N/A N/A N/A N/A N/A HEAT CONTENT 52 38 10 6 6 6 6 6 N/A N/A N/A N/A N/A FORECAST TRACK FROM OFCI INITIAL HEADING/SPEED (DEG/KT): 5/ 6 CX,CY: 1/ 6 T-12 MAX WIND: 20 PRESSURE OF STEERING LEVEL (MB): 587 (MEAN=620) GOES IR BRIGHTNESS TEMP. STD DEV. 50-200 KM RAD: 12.4 (MEAN=14.5) % GOES IR PIXELS WITH T < -20 C 50-200 KM RAD: 85.0 (MEAN=65.0) PRELIM RI PROB (DV .GE. 35 KT IN 36 HR): 14.5 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. 10. 11. 11. 12. 12. SST POTENTIAL 1. 1. 1. 2. 3. 8. 14. 19. 23. 26. 29. 31. VERTICAL SHEAR MAG 1. 2. 4. 5. 5. 3. -2. -6. -10. -13. -16. -18. VERTICAL SHEAR ADJ 0. 1. 1. 2. 3. 5. 6. 6. 6. 5. 5. 4. VERTICAL SHEAR DIR 0. 0. 0. 0. 1. 1. 2. 2. 2. 3. 3. 3. PERSISTENCE 3. 4. 5. 4. 3. 2. 2. 2. 1. 1. 1. 0. 200/250 MB TEMP. 0. -1. -1. -1. -1. -1. -1. -2. -2. -2. -2. -2. THETA_E EXCESS 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 700-500 MB RH 0. 0. 0. 0. 1. 1. 1. 1. 1. 1. 1. 1. MODEL VTX TENDENCY 0. -1. -1. -1. -3. -4. -7. -8. -9. -11. -11. -12. 850 MB ENV VORTICITY 0. -1. -1. -1. -2. -3. -4. -5. -5. -6. -6. -7. 200 MB DIVERGENCE 0. 0. -1. -1. -1. -1. -1. -1. -1. 0. 0. 1. 850-700 T ADVEC 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. ZONAL STORM MOTION 0. 0. 0. 0. 0. -1. -1. -1. -1. -2. -3. -3. STEERING LEVEL PRES 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. DAYS FROM CLIM. PEAK 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. GOES PREDICTORS 1. 1. 1. 1. 1. 1. 0. 0. 0. 0. 0. 0. OCEAN HEAT CONTENT 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. RI POTENTIAL 0. 1. 1. 1. 2. 1. 1. 0. 0. 0. 0. -1. ---------------------------------------------------------- TOTAL CHANGE 6. 10. 13. 16. 19. 21. 19. 19. 16. 14. 11. 11. CURRENT MAX WIND (KT): 35. LAT, LON: 29.0 95.3 ** 2019 ATLANTIC RI INDEX AL112019 IMELDA 09/17/19 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) : 15.0 -49.5 to 33.0 0.78 7.4 850-200 MB SHEAR (KT) : 11.7 30.1 to 2.3 0.66 2.4 HEAT CONTENT (KJ/CM2) : 22.4 0.0 to 151.8 0.15 0.5 STD DEV OF IR BR TEMP : 12.4 36.6 to 2.8 0.72 2.8 MAXIMUM WIND (KT) : 35.0 22.5 to 137.5 0.33 0.7 2nd PC OF IR BR TEMP : 1.4 2.9 to -2.9 0.26 0.7 POT = MPI-VMAX (KT) : 108.8 27.5 to 139.6 0.73 1.8 D200 (10**7s-1) : -7.8 -29.7 to 185.9 0.10 0.1 %area of TPW <45 mm upshear : 9.0 100.0 to 0.0 0.91 0.0 BL DRY-AIR FLUX (W/M2) : 147.2 895.4 to -55.0 0.79 0.0 SHIPS Prob RI for 20kt/ 12hr RI threshold= 9% is 1.7 times climatological mean ( 5.2%) SHIPS Prob RI for 25kt/ 24hr RI threshold= 23% is 2.1 times climatological mean (10.9%) SHIPS Prob RI for 30kt/ 24hr RI threshold= 16% is 2.4 times climatological mean ( 6.9%) SHIPS Prob RI for 35kt/ 24hr RI threshold= 12% is 3.1 times climatological mean ( 3.8%) SHIPS Prob RI for 40kt/ 24hr RI threshold= 11% is 4.6 times climatological mean ( 2.4%) SHIPS Prob RI for 45kt/ 36hr RI threshold= 12% is 2.6 times climatological mean ( 4.5%) SHIPS Prob RI for 55kt/ 48hr RI threshold= 12% is 2.7 times climatological mean ( 4.6%) SHIPS Prob RI for 65kt/ 72hr RI threshold= 0% is 0.0 times climatological mean ( 5.4%) 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: 8.9% 23.3% 16.3% 11.6% 11.1% 11.7% 12.4% 0.0% Logistic: 14.8% 56.1% 50.6% 39.0% 14.7% 36.4% 15.5% 3.7% Bayesian: 3.8% 3.3% 1.0% 0.5% 0.0% 0.1% 0.0% 0.0% Consensus: 9.1% 27.6% 22.6% 17.0% 8.6% 16.1% 9.3% 1.2% DTOPS: 999.0% 999.0% 999.0% 999.0% 999.0% 999.0% 999.0% 999.0% ## ANNULAR HURRICANE INDEX (AHI) AL112019 IMELDA 09/17/19 18 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 AL112019 IMELDA 09/17/2019 18 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 >24HR AGO (DSHIPS) 35 33 31 29 28 27 27 27 27 27 27 27 27 18HR AGO 35 34 32 30 29 28 28 28 28 28 28 28 28 12HR AGO 35 32 31 29 28 27 27 27 27 27 27 27 27 6HR AGO 35 29 26 25 24 23 23 23 23 23 23 23 23 NOW CURRENT INTENSITY < 83 KT IN 6HR INTENSITY IN 6HR < 83 KT IN 12HR INTENSITY IN 12HR < 83 KT