* GFS version * * EAST PACIFIC 2024 SHIPS INTENSITY FORECAST * * IR SAT DATA AVAILABLE, OHC AVAILABLE * * ALVIN EP012025 05/31/25 00 UTC * TIME (HR) 0 6 12 18 24 36 48 60 72 84 96 108 120 132 144 156 168 V (KT) NO LAND 40 37 33 29 25 19 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A V (KT) LAND 40 37 33 29 25 19 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A V (KT) LGEM 40 37 33 29 26 20 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) 29 32 32 30 30 36 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 0 -1 -2 -2 -4 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A SHEAR DIR 194 202 211 214 210 226 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A SST (C) 25.9 24.8 24.2 23.9 23.7 26.1 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) 122 110 103 100 99 124 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) -51.9 -52.3 -52.7 -52.7 -52.6 -53.1 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) 0.3 0.2 0.1 0.0 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) 2 2 1 2 3 2 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 52 50 49 44 40 38 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) 17 15 14 12 10 6 LOST LOST LOST LOST LOST LOST LOST LOST LOST LOST LOST 850 MB ENV VOR 36 16 4 5 -3 -8 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 45 16 10 1 -2 9 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 9 10 9 13 5 4 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A LAND (KM) 394 376 313 237 162 26 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) 18.7 19.5 20.2 20.9 21.6 23.3 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) 109.0 109.2 109.3 109.4 109.4 109.2 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) 9 8 7 7 8 8 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A HEAT CONTENT 2 1 0 0 0 1 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):350/ 9 CX,CY: -1/ 9 T-12 MAX WIND: 45 PRESSURE OF STEERING LEVEL (MB): 671 (MEAN=586) GOES IR BRIGHTNESS TEMP. STD DEV. 50-200 KM RAD: 19.0 (MEAN=14.5) % GOES IR PIXELS WITH T < -20 C 50-200 KM RAD: 55.0 (MEAN=65.0) PRELIM RI PROB (DV .GE. 35 KT IN 36 HR): 0.0 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. 1. 1. 1. 2. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. SST POTENTIAL 0. -0. -1. -2. -3. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. VERTICAL SHEAR MAG -0. -0. 0. 1. 2. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. VERTICAL SHEAR ADJ 0. 0. 0. 1. 1. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. VERTICAL SHEAR DIR -0. -0. -0. -0. -0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. PERSISTENCE -1. -2. -2. -3. -2. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 200/250 MB TEMP. -0. -0. -0. -0. -1. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. THETA_E EXCESS -0. -1. -2. -2. -4. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 700-500 MB RH -0. -0. -0. -1. -2. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. MODEL VTX TENDENCY -1. -2. -3. -5. -8. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 850 MB ENV VORTICITY 0. -0. -0. -0. -0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 200 MB DIVERGENCE -0. -0. -0. -0. -0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 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. 0. 1. 1. 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. 0. 0. 0. 0. GOES PREDICTORS -0. -1. -1. -1. -1. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 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. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. -------------------------------------------------------------------------------------------- TOTAL CHANGE -3. -7. -11. -15. -21. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. CURRENT MAX WIND (KT): 40. LAT, LON: 18.7 109.0 ** 2024 E. PACIFIC RI INDEX EP012025 ALVIN 05/31/25 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 POT = MPI-VMAX (KT) : 66.8 36.9 to 148.5 0.27 999.0 12 HR PERSISTENCE (KT) : -5.0 -22.0 to 44.0 0.26 999.0 MULTI-LAYER SHEAR (KT) : 37.5 34.9 to 8.5 0.00 0.0 BL DRY-AIR FLUX (W/M2) : 258.6 800.8 to -82.5 0.61 999.0 D200 (10**7s-1) : 14.0 -33.0 to 170.5 0.23 999.0 MAXIMUM WIND (KT) : 40.0 22.5 to 132.0 0.50 999.0 STD DEV OF IR BR TEMP : 19.0 37.8 to 2.1 0.53 999.0 HEAT CONTENT (KJ/CM2) : 0.6 2.7 to 107.8 0.00 0.0 %area of TPW <45 mm upshear : 78.3 58.2 to 0.0 0.00 0.0 2nd PC OF IR BR TEMP : -1.4 2.2 to -2.3 0.82 999.0 SHIPS Prob RI for 20kt/ 12hr RI threshold= 0% is 0.0 times climatological mean ( 6.3%) SHIPS Prob RI for 25kt/ 24hr RI threshold= 0% is 0.0 times climatological mean (12.5%) SHIPS Prob RI for 30kt/ 24hr RI threshold= 0% is 0.0 times climatological mean ( 8.6%) SHIPS Prob RI for 35kt/ 24hr RI threshold= 0% is 0.0 times climatological mean ( 6.2%) SHIPS Prob RI for 40kt/ 24hr RI threshold= 0% is 0.0 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: 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% Logistic: 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% Bayesian: 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% Consensus: 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% DTOPS: 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% SDCON: 0% 0% 0% 0% 0% 0% 0% 0% ## ANNULAR HURRICANE INDEX (AHI) EP012025 ALVIN 05/31/25 00 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) ##