* GFS version * * EAST PACIFIC 2021 SHIPS INTENSITY FORECAST * * IR SAT DATA AVAILABLE, OHC AVAILABLE * * RICK EP172021 10/25/21 06 UTC * TIME (HR) 0 6 12 18 24 36 48 60 72 84 96 108 120 132 144 156 168 V (KT) NO LAND 90 91 90 86 80 70 61 55 51 49 48 47 46 46 45 46 46 V (KT) LAND 90 91 67 52 41 31 28 27 27 27 27 27 27 27 27 27 27 V (KT) LGEM 90 92 70 53 41 31 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 15 15 19 22 24 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) 0 2 1 3 2 0 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A SHEAR DIR 154 177 198 217 216 227 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A SST (C) 29.2 28.8 28.4 28.2 28.1 28.2 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) 155 151 146 144 143 144 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) -52.3 -52.5 -52.4 -52.3 -52.5 -52.7 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) 0.1 0.2 0.2 0.1 0.0 0.0 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) 9 7 9 9 7 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 49 50 53 57 56 46 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) 8 4 3 2 LOST LOST LOST LOST LOST LOST LOST LOST LOST LOST LOST LOST LOST 850 MB ENV VOR 8 0 -10 -7 -5 -13 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 51 56 47 38 12 13 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 0 1 2 1 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A LAND (KM) 53 13 -33 -83 -130 -162 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) 17.2 17.8 18.3 18.8 19.2 20.1 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) 101.7 101.9 102.0 102.3 102.5 103.2 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 6 5 5 5 5 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A HEAT CONTENT 18 15 12 10 10 11 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):355/ 7 CX,CY: 0/ 7 T-12 MAX WIND: 75 PRESSURE OF STEERING LEVEL (MB): 507 (MEAN=587) GOES IR BRIGHTNESS TEMP. STD DEV. 50-200 KM RAD: 6.4 (MEAN=14.5) % GOES IR PIXELS WITH T < -20 C 50-200 KM RAD: 98.0 (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 0. 0. 1. 1. 1. 2. 1. 1. 0. -0. -1. -2. -2. -3. -4. -4. SST POTENTIAL 0. 1. 1. 1. -2. -6. -10. -14. -17. -19. -20. -20. -20. -20. -21. -23. VERTICAL SHEAR MAG -2. -4. -6. -8. -11. -11. -10. -9. -8. -9. -10. -11. -12. -12. -11. -10. VERTICAL SHEAR ADJ -0. -0. -0. -1. -1. -1. -1. -1. -0. -0. -0. -0. -0. -0. -0. -0. VERTICAL SHEAR DIR -0. -0. -1. -1. -2. -2. -3. -3. -3. -4. -4. -4. -4. -3. -3. -3. PERSISTENCE 4. 5. 5. 5. 3. 2. 0. -1. -1. -1. -1. -2. -2. -2. -1. -1. 200/250 MB TEMP. -0. -0. -0. -0. -1. -1. -1. -2. -2. -2. -3. -3. -3. -3. -3. -4. THETA_E EXCESS 0. 0. 1. 1. 2. 2. 3. 3. 4. 4. 4. 4. 4. 4. 5. 5. 700-500 MB RH -0. -0. -0. -0. -1. -1. -1. -1. -1. -1. -1. -1. -1. -2. -2. -3. MODEL VTX TENDENCY -1. -3. -5. -5. -5. -6. -8. -9. -10. -9. -9. -8. -7. -7. -6. -6. 850 MB ENV VORTICITY -0. -0. -0. -0. -0. 0. 0. 1. 1. 1. 1. 1. 1. 1. 1. 1. 200 MB DIVERGENCE 0. 0. 0. 0. -0. -0. -0. -1. -1. -1. -1. -0. -0. -0. 0. 0. 850-700 T ADVEC 0. 0. -0. -0. -0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 1. ZONAL STORM MOTION -0. -0. -1. -1. -2. -3. -3. -3. -3. -2. -2. -2. -2. -2. -1. 0. STEERING LEVEL PRES -0. -0. -0. -1. -1. -1. -1. -1. -1. -1. -1. -2. -1. -1. -1. -0. DAYS FROM CLIM. PEAK -0. -0. -0. -0. -0. -0. -1. -1. -1. -2. -2. -2. -3. -3. -4. -5. GOES PREDICTORS 1. 2. 2. 2. 2. 2. 2. 2. 2. 3. 3. 3. 3. 3. 2. 2. OCEAN HEAT CONTENT -0. -0. -0. -0. -0. -0. -1. -0. -0. -0. 0. 0. 1. 1. 1. 2. RI POTENTIAL -0. -1. -2. -3. -4. -4. -3. -1. 1. 2. 4. 4. 4. 4. 4. 4. ------------------------------------------------------------------------------ TOTAL CHANGE 1. -0. -4. -10. -20. -29. -35. -39. -41. -42. -43. -44. -44. -45. -44. -44. CURRENT MAX WIND (KT): 90. LAT, LON: 17.2 101.7 ** 2021 E. Pacific RI INDEX EP172021 RICK 10/25/21 06 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 POT = MPI-VMAX (KT) : 57.9 40.5 to 149.3 0.16 1.2 12 HR PERSISTENCE (KT) : 15.0 -22.0 to 44.0 0.56 4.7 D200 (10**7s-1) : 40.8 -33.0 to 159.5 0.38 2.6 850-200 MB SHEAR (KT) : 17.3 19.6 to 1.3 0.12 0.8 MAXIMUM WIND (KT) : 90.0 22.5 to 132.0 0.57 2.9 STD DEV OF IR BR TEMP : 6.4 37.8 to 2.1 0.88 4.1 BL DRY-AIR FLUX (W/M2) : 567.6 800.8 to -82.5 0.26 -1.4 HEAT CONTENT (KJ/CM2) : 13.0 2.7 to 106.7 0.10 0.4 %area of TPW <45 mm upshear : 0.0 56.6 to 0.0 1.00 1.5 2nd PC OF IR BR TEMP : 0.4 2.2 to -2.3 0.40 0.3 SHIPS Prob RI for 20kt/ 12hr RI threshold= 13% is 2.1 times climatological mean ( 6.3%) SHIPS Prob RI for 25kt/ 24hr RI threshold= 18% is 1.4 times climatological mean (12.5%) SHIPS Prob RI for 30kt/ 24hr RI threshold= 17% is 2.0 times climatological mean ( 8.6%) SHIPS Prob RI for 35kt/ 24hr RI threshold= 16% is 2.6 times climatological mean ( 6.2%) SHIPS Prob RI for 40kt/ 24hr RI threshold= 11% is 2.6 times climatological mean ( 4.2%) SHIPS Prob RI for 45kt/ 36hr RI threshold= 0% is 0.0 times climatological mean ( 6.7%) SHIPS Prob RI for 55kt/ 48hr RI threshold= 0% is 0.0 times climatological mean ( 5.9%) SHIPS Prob RI for 65kt/ 72hr RI threshold= 0% is 0.0 times climatological mean ( 4.7%) 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: 13.1% 18.0% 17.2% 16.0% 10.7% 0.0% 0.0% 0.0% Logistic: 14.0% 6.3% 7.2% 4.5% 4.9% 1.2% 0.6% 0.1% Bayesian: 2.1% 3.7% 0.7% 0.3% 0.1% 0.0% 0.0% 0.0% Consensus: 9.7% 9.3% 8.4% 6.9% 5.3% 0.4% 0.2% 0.0% DTOPS: 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% ## ANNULAR HURRICANE INDEX (AHI) EP172021 RICK 10/25/21 06 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) ##