UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025041812.upa.cvt Date: 1200Z 18 APR 25 Searching for CYAH... Searching the city database file for: CYAH ... Date:1200Z 18 APR 25 Station: CYAH WMO ident: 71823 Latitude: 53.75 Longitude: -73.68 Elevation: 306.00 ------------------------------------------------------------------------------- LEV PRES HGHT TEMP DEWP RH DD WETB DIR SPD THETA THE-V THE-W THE-E W mb m C C % C C deg knt K K K K g/kg ------------------------------------------------------------------------------- 0 1000 137 SFC 979 306 -6.9 -8.4 89 1.5 -7.4 255 4 267.9 268.2 267.0 273.5 2.07 2 938 634 -10.1 -10.1 100 0.0 -10.1 281 11 267.9 268.2 266.7 273.1 1.89 3 925 741 -9.1 -9.1 100 0.0 -9.1 305 13 270.0 270.3 268.4 275.7 2.07 4 923 758 -8.7 -8.7 100 0.0 -8.7 305 13 270.6 270.9 269.0 276.4 2.14 5 850 1393 -11.7 -11.7 100 0.0 -11.7 305 4 273.9 274.2 270.5 279.0 1.83 6 843 1456 -12.3 -12.4 99 0.1 -12.3 307 8 273.9 274.2 270.4 278.8 1.75 7 838 1502 -9.3 -11.5 84 2.2 -9.9 309 11 277.5 277.8 272.8 282.9 1.89 8 833 1548 -8.7 -10.8 85 2.1 -9.3 310 12 278.6 279.0 273.6 284.4 2.01 9 821 1661 -8.7 -14.7 62 6.0 -10.3 308 11 279.8 280.0 273.5 284.1 1.49 10 817 1698 -8.5 -10.8 83 2.3 -9.2 307 11 280.4 280.7 274.7 286.3 2.05 11 806 1804 -7.7 -11.9 72 4.2 -8.9 305 10 282.3 282.7 275.5 287.9 1.90 12 805 1813 -7.7 -11.8 72 4.1 -8.9 305 10 282.4 282.8 275.6 288.0 1.92 13 800 1862 -7.9 -12.6 69 4.7 -9.3 305 10 282.7 283.0 275.6 288.0 1.81 14 796 1901 -7.9 -15.9 53 8.0 -10.1 305 11 283.1 283.4 275.2 287.2 1.39 15 794 1920 -7.9 -25.9 22 18.0 -11.5 305 11 283.3 283.4 274.1 285.1 0.58 16 736 2508 -9.5 -48.5 3 39.0 -14.0 293 18 287.8 287.8 275.6 288.0 0.06 17 714 2742 -10.1 -45.1 4 35.0 -14.5 285 18 289.7 289.7 276.6 290.0 0.10 18 704 2850 -10.3 -20.3 44 10.0 -12.8 296 17 290.6 290.8 278.6 293.9 1.08 19 700 2894 -10.5 -21.5 40 11.0 -13.1 300 16 290.9 291.0 278.6 293.9 0.98 20 678 3139 -12.7 -19.7 56 7.0 -14.4 303 18 291.1 291.3 279.0 294.7 1.18 21 674 3184 -13.1 -25.1 36 12.0 -15.6 303 18 291.1 291.2 278.3 293.4 0.74 22 670 3229 -13.5 -24.5 39 11.0 -15.7 304 19 291.2 291.3 278.4 293.6 0.78 23 668 3252 -13.7 -18.7 66 5.0 -14.9 304 19 291.2 291.4 279.1 295.2 1.31 24 663 3309 -13.7 -16.1 82 2.4 -14.3 304 20 291.8 292.1 279.9 296.8 1.64 25 650 3460 -14.9 -16.8 85 1.9 -15.4 300 22 292.1 292.4 280.0 296.9 1.58 26 562 4549 -20.5 -24.0 73 3.5 -21.2 289 26 297.9 298.1 281.8 301.0 0.98 27 536 4899 -21.7 -38.7 20 17.0 -23.8 295 31 300.5 300.6 281.9 301.4 0.25 28 521 5108 -22.3 -51.3 5 29.0 -24.7 302 47 302.3 302.3 282.4 302.5 0.07 29 516 5179 -22.5 -49.5 7 27.0 -24.9 305 52 302.9 302.9 282.7 303.2 0.08 30 500 5410 -23.7 -40.7 19 17.0 -25.6 300 59 304.1 304.2 283.4 304.9 0.22 31 461 5997 -27.3 -33.3 57 6.0 -28.1 296 71 306.8 306.9 284.8 308.5 0.50 32 445 6250 -29.1 -38.1 42 9.0 -30.1 293 74 307.6 307.7 284.8 308.8 0.32 33 436 6395 -30.3 -39.3 41 9.0 -31.2 290 76 307.9 308.0 284.9 308.9 0.29 34 430 6493 -30.9 -35.9 61 5.0 -31.4 289 77 308.4 308.5 285.2 309.8 0.42 35 427 6543 -31.3 -40.3 41 9.0 -32.1 288 77 308.5 308.5 285.1 309.4 0.27 36 406 6897 -34.7 -37.9 73 3.2 -35.0 288 79 308.6 308.6 285.2 309.8 0.36 37 402 6965 -35.5 -40.4 61 4.9 -35.9 289 79 308.4 308.5 285.1 309.4 0.28 38 400 7000 -35.9 -40.4 63 4.5 -36.2 290 79 308.3 308.4 285.1 309.3 0.28 39 393 7123 -37.1 -40.2 73 3.1 -37.4 290 81 308.3 308.4 285.1 309.4 0.29 40 389 7193 -37.7 -42.5 61 4.8 -38.1 290 82 308.4 308.5 285.1 309.3 0.23 41 367 7594 -40.3 -41.8 85 1.5 -40.4 290 88 310.2 310.2 285.7 311.1 0.27 42 365 7631 -40.3 -42.7 78 2.4 -40.5 290 89 310.6 310.7 285.9 311.5 0.24 43 364 7650 -40.1 -49.1 38 9.0 -40.6 290 89 311.2 311.2 285.9 311.6 0.12 44 300 8940 -51.5 -54.5 70 3.0 -51.6 285 97 312.8 312.8 286.4 313.1 0.08 45 287 9225 -54.3 -58.2 62 3.9 -54.4 286 98 312.7 312.8 286.4 312.9 0.05 46 280 9383 -54.9 -59.2 59 4.3 -55.0 287 100 314.1 314.1 286.8 314.3 0.05 47 271 9591 -56.3 -58.4 77 2.1 -56.3 288 103 315.0 315.0 287.2 315.2 0.05 48 261 9829 -57.7 -64.7 40 7.0 -57.8 289 107 316.4 316.4 287.6 316.5 0.02 49 257 9926 -58.2 -65.2 40 7.0 -58.3 290 108 317.0 317.0 287.8 317.1 0.02 50 255 9976 -58.5 -65.5 40 7.0 -58.6 290 108 317.3 317.3 287.9 317.4 0.02 51 250 10100 -58.3 -66.3 35 8.0 -58.4 295 101 319.4 319.4 288.6 319.5 0.02 52 241 10331 -57.3 -73.3 11 16.0 -57.5 295 87 324.3 324.3 290.0 324.3 0.01 53 230 10626 -57.1 -77.1 6 20.0 -57.3 295 70 328.9 328.9 291.4 328.9 0.00 54 219 10938 -54.3 -81.3 2 27.0 -54.6 293 60 337.9 337.9 293.8 337.9 0.00 55 202 11456 -53.9 -81.9 2 28.0 -54.2 290 46 346.4 346.4 295.8 346.4 0.00 56 200 11520 -54.1 -82.1 2 28.0 -54.4 290 44 347.1 347.1 296.0 347.1 0.00 57 186 11984 -55.1 -83.1 2 28.0 -55.4 295 39 352.8 352.8 297.3 352.8 0.00 58 180 12194 -52.9 -82.9 1 30.0 -53.3 298 37 359.7 359.7 298.7 359.7 0.00 59 150 13370 -52.7 -83.7 1 31.0 -53.2 290 27 379.3 379.3 302.1 379.3 0.00 60 100 16010 -50.3 -84.3 1 34.0 -51.2 270 11 430.5 430.5 308.9 430.6 0.00 61 97 16208 -51.1 -85.1 1 34.0 -52.0 281 12 432.7 432.7 309.1 432.8 0.00 62 78 17630 -48.3 -84.3 1 36.0 -49.7 279 11 466.4 466.4 312.3 466.4 0.00 63 70 18340 -48.9 -84.9 1 36.0 -50.3 250 2 479.8 479.8 313.4 479.8 0.00 64 50 20540 -50.1 -85.1 1 35.0 -51.8 140 8 525.4 525.4 316.6 525.4 0.01 65 30 23860 -51.1 -86.1 1 35.0 -53.4 105 10 605.3 605.3 320.9 605.4 0.01 66 26 24791 -52.9 -86.9 1 34.0 -55.1 132 20 625.5 625.5 321.7 625.6 0.01 67 20 26500 -49.9 -86.9 1 37.0 -53.4 90 3 683.4 683.4 323.9 683.5 0.01 68 11 30436 -46.9 -85.9 0 39.0 -53.4 80 13 821.8 821.8 327.8 822.0 0.02 TRP 255 9976 -58.5 -65.5 40 7.0 -58.6 290 108 317.3 317.3 287.9 317.4 0.02 WND 257 9926 -58.2 -65.2 40 7.0 -58.3 290 108 317.0 317.0 287.8 317.1 0.02 Sounding variables and indices 1000-500 mb thick: 5273.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.25 inches Sfc-500 mean rel hum: 59.18 % Est. max temperature: 4.18 C = 39.53 F Sfc-Lift cond lev (LCL): 955.78 mb = 490.21 m = 1608.27 ft T: -8.70 C 700-500 lapse rate: 5.25 C/km ThetaE index: 2.87 C Layer 800.0- 736.0 mb Conv cond level (CCL): 950.01 mb = 536.67 m = 1760.70 ft Mean mixing ratio: 2.01 g/kg Conv temperature: -6.86 C = 19.64 F Cap Strength: 23.18 C Lifted Index: 23.98 C Risk: None Lifted Index @300 mb: 26.59 C Lifted Index @700 mb: 15.79 C Showalter Index: 20.99 C Risk: None Total Totals Index: 24.00 C Risk: None Vertical Totals Index: 12.00 C Cross Totals Index: 12.00 C K Index: -10.70 Risk: None Sweat Index: 67.00 Risk: None Energy Index: 5.52 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 25.28 J/kg Max Up Vert Vel: 7.11 m/s Conv Inhibition (B-): 75083.75 J/kg Cap Strength: 23.82 C Lift Cond Lev (LCL): 923.00 mb = 757.76 m = 2486.06 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 326 at 21 knt ---------------------------------------------------------- TRUE/GROUND REL | STORM REL LEV P H DIR SPD U V | DIR SPD U V mb m knt m/s | knt m/s ---------------------------------------------------------- 0 979 306 255 4 3.9 1.0 | 157 20 -7.7 18.3 1 941 610 275 10 10.0 -0.9 | 175 17 -1.6 16.4 2 925 741 305 13 10.6 -7.5 | 175 10 -0.9 9.9 3 904 914 305 14 11.5 -8.0 | 180 9 -0.1 9.3 4 869 1219 300 6 5.2 -3.0 | 156 16 -6.3 14.3 5 850 1393 305 4 3.3 -2.3 | 151 17 -8.3 15.0 6 836 1524 310 12 9.2 -7.7 | 166 10 -2.3 9.6 7 803 1829 305 10 8.2 -5.7 | 164 12 -3.3 11.6 8 772 2134 305 13 10.6 -7.5 | 175 10 -0.9 9.9 9 742 2438 295 18 16.3 -7.6 | 206 11 4.8 9.7 10 714 2743 285 18 17.4 -4.7 | 205 14 5.9 12.7 11 700 2894 300 16 13.9 -8.0 | 194 10 2.3 9.3 12 658 3353 305 20 16.4 -11.5 | 220 8 4.9 5.8 13 632 3658 290 27 25.4 -9.2 | 240 16 13.8 8.1 14 583 4267 285 23 22.2 -6.0 | 223 16 10.7 11.4 15 537 4877 295 30 27.2 -12.7 | 254 16 15.7 4.6 16 516 5182 305 53 43.4 -30.4 | 292 34 31.9 -13.1 17 500 5410 300 59 51.1 -29.5 | 287 41 39.6 -12.2 18 454 6096 295 73 66.2 -30.9 | 284 56 54.6 -13.5 19 417 6706 285 79 76.3 -20.4 | 273 65 64.8 -3.1 20 400 7000 290 79 74.2 -27.0 | 279 63 62.7 -9.7 21 365 7620 290 89 83.6 -30.4 | 280 73 72.1 -13.1 22 349 7925 290 92 86.5 -31.5 | 281 76 74.9 -14.2 23 300 8940 285 97 93.7 -25.1 | 275 83 82.2 -7.8 24 291 9144 285 97 93.7 -25.1 | 275 83 82.2 -7.8 25 257 9926 290 108 101.5 -36.9 | 282 92 90.0 -19.6 26 255 9976 290 108 101.5 -36.9 | 282 92 90.0 -19.6 27 252 10058 290 108 101.5 -36.9 | 282 92 90.0 -19.6 28 250 10100 295 101 91.5 -42.7 | 288 84 80.0 -25.4 29 229 10668 295 68 61.6 -28.7 | 283 51 50.1 -11.4 30 200 11520 290 44 41.3 -15.0 | 266 30 29.8 2.3 31 198 11582 290 44 41.3 -15.0 | 266 30 29.8 2.3 32 164 12802 305 30 24.6 -17.2 | 270 13 13.0 0.1 33 156 13106 280 27 26.6 -4.7 | 230 20 15.1 12.6 34 150 13370 290 27 25.4 -9.2 | 240 16 13.8 8.1 35 142 13716 295 25 22.7 -10.6 | 239 13 11.1 6.7 36 136 14021 315 24 17.0 -17.0 | 266 5 5.4 0.3 37 124 14630 300 15 13.0 -7.5 | 188 10 1.5 9.8 38 113 15240 280 19 18.7 -3.3 | 207 16 7.2 14.0 39 107 15545 270 15 15.0 -0.0 | 191 18 3.5 17.3 40 102 15850 290 13 12.2 -4.4 | 183 13 0.7 12.9 41 100 16010 270 11 11.0 -0.0 | 178 17 -0.5 17.3 42 98 16154 285 12 11.6 -3.1 | 180 14 0.1 14.2 43 93 16459 260 13 12.8 2.3 | 184 20 1.3 19.6 44 85 17069 235 10 8.2 5.7 | 172 23 -3.3 23.0 45 81 17374 270 10 10.0 -0.0 | 175 17 -1.5 17.3 46 77 17678 280 11 10.8 -1.9 | 177 15 -0.7 15.4 47 74 17983 260 12 11.8 2.1 | 181 19 0.3 19.4 48 71 18288 310 13 10.0 -8.4 | 170 9 -1.6 9.0 49 70 18340 250 2 1.9 0.7 | 152 20 -9.7 18.0 50 67 18593 305 1 0.8 -0.6 | 147 20 -10.7 16.7 51 59 19507 330 13 6.5 -11.3 | 140 8 -5.0 6.1 52 56 19812 345 10 2.6 -9.7 | 131 12 -8.9 7.7 53 50 20540 140 8 -5.1 6.1 | 145 29 -16.7 23.4 54 49 20726 120 11 -9.5 5.5 | 137 31 -21.1 22.8 55 44 21336 250 6 5.6 2.1 | 163 20 -5.9 19.4 56 38 22250 90 10 -10.0 0.0 | 129 28 -21.5 17.3 57 37 22555 110 10 -9.4 3.4 | 135 29 -20.9 20.7 58 35 22860 70 6 -5.6 -2.1 | 132 23 -17.2 15.3 59 33 23165 80 10 -9.8 -1.7 | 126 26 -21.4 15.6 60 32 23470 95 17 -16.9 1.5 | 123 34 -28.5 18.8 61 30 23774 145 11 -6.3 9.0 | 146 32 -17.8 26.3 62 30 23860 105 10 -9.7 2.6 | 133 29 -21.2 19.9 63 29 24079 110 9 -8.5 3.1 | 136 29 -20.0 20.4 64 28 24384 115 13 -11.8 5.5 | 134 33 -23.3 22.8 65 25 24994 140 23 -14.8 17.6 | 143 44 -26.3 34.9 66 24 25298 160 14 -4.8 13.2 | 152 35 -16.3 30.5 67 23 25603 90 10 -10.0 0.0 | 129 28 -21.5 17.3 68 22 25908 110 16 -15.0 5.5 | 131 35 -26.6 22.8 69 20 26500 90 3 -3.0 0.0 | 140 23 -14.5 17.3 70 20 26518 100 18 -17.7 3.1 | 125 36 -29.3 20.4 71 18 26822 130 13 -10.0 8.4 | 140 33 -21.5 25.7 72 14 27432 60 10 -8.7 -5.0 | 121 24 -20.2 12.3 73 11 28042 90 10 -10.0 0.0 | 129 28 -21.5 17.3 74 10 28346 60 18 -15.6 -9.0 | 107 28 -27.1 8.3 75 8 28956 95 22 -21.9 1.9 | 120 39 -33.4 19.2 76 7 29566 120 27 -23.4 13.5 | 131 47 -34.9 30.8 Wind Parameters Mean winds (0-6000m): 296.3 at 27.7 knts Storm direction: 326.3 at 20.8 knts Shear (0-3000m) pos: 3.5 neg: 0.8 tot: 4.3 10-3/s Storm rel Dir Shear (0-3000m): 59.3 deg Storm rel helicity (0-3000m) pos: 67.9 neg: -28.2 tot: 39.6 m^2/s^2 ave: 13.2 10^-3 m/s^2 rel: 0.23 Storm rel vorticity (0-3000m) horiz: 8.7 stream: 2.0 10^-3/s Energy-Hel index: 0.01 Bulk Rich Number: 0.53 Bulk Shear: 48.13 m/s Storm Parameters ------------------------------------------------------------------------------- Depth Mean Inflow| Shear | Helicity | Vorticity AGL Dir Spd Dir Spd| Pos Neg Tot| Pos Neg Tot Ave Rel | Hor Strm m knt knt| 10^-3/s | m^2/s^2 m/s^2 | 10^-3/s ------------------------------------------------------------------------------- 500 284 9 170 15| 11.6 0.0 11.6| 28.7 -0.1 28.6 57.2 0.45| 13.7 6.2 1000 294 10 168 14| 5.8 4.3 10.1| 29.9 -18.9 11.0 11.0 0.04| 11.8 0.4 1500 299 9 165 13| 5.6 2.9 8.5| 40.2 -21.3 18.9 12.6 0.10| 10.8 1.1 2000 300 10 167 12| 4.2 0.9 5.1| 54.2 -21.3 32.9 16.5 0.23| 9.6 2.2 2500 298 12 174 12| 3.4 1.0 4.3| 60.4 -24.4 36.1 14.4 0.22| 9.1 2.0 3000 298 13 178 11| 3.5 0.8 4.3| 67.9 -28.2 39.6 13.2 0.23| 8.7 2.0 4000 295 16 194 11| 2.6 1.5 4.1| 77.9 -44.3 33.6 8.4 0.18| 8.3 1.5 5000 296 19 214 11| 5.6 1.2 6.8|209.8 -58.5 151.3 30.3 0.34| 10.3 3.5 6000 296 28 249 14| 4.7 2.7 7.4|209.8-172.1 37.8 6.3 0.21| 10.6 2.2 Wrote GIF file: /home/apache/climate/data/raob//CYAH/skewt/CYAH.skewt.20250418.12.gif