UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025101812.upa.cvt Date: 1200Z 18 OCT 25 Searching for KIAD... Searching the city database file for: KIAD ... Date:1200Z 18 OCT 25 Station: KIAD WMO ident: 72403 Latitude: 38.95 Longitude: -77.45 Elevation: 98.00 ------------------------------------------------------------------------------- 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 ------------------------------------------------------------------------------- SFC 1006 98 8.6 5.7 82 2.9 7.1 0 0 281.3 282.2 280.0 297.0 5.71 1 1000 135 10.2 3.2 62 7.0 6.8 200 7 283.4 284.2 279.9 296.8 4.81 2 994 185 12.6 0.6 44 12.0 6.9 203 9 286.2 286.9 280.3 297.7 4.01 3 980 305 15.0 3.0 44 12.0 8.9 210 15 289.8 290.7 282.9 303.7 4.84 4 977 331 15.0 3.0 44 12.0 8.8 210 15 290.1 290.9 283.0 304.0 4.86 5 966 427 14.8 3.8 48 11.0 9.0 212 13 290.8 291.7 283.7 305.8 5.20 6 949 577 15.2 2.2 41 13.0 8.5 214 11 292.7 293.5 284.0 306.4 4.72 7 925 794 14.2 -2.8 31 17.0 6.3 195 9 293.8 294.4 282.9 303.8 3.36 8 890 1118 12.6 -7.4 24 20.0 4.1 280 7 295.4 295.9 282.5 302.9 2.46 9 878 1232 12.0 -4.0 32 16.0 4.7 320 7 296.0 296.5 283.7 305.6 3.23 10 871 1298 12.2 -3.8 32 16.0 4.8 319 7 296.8 297.4 284.1 306.8 3.31 11 866 1347 12.8 -19.2 9 32.0 2.0 318 7 298.0 298.1 281.8 301.0 0.97 12 864 1366 13.0 -14.0 14 27.0 2.8 317 7 298.4 298.6 282.6 303.1 1.50 13 862 1385 13.0 0.0 41 13.0 6.5 317 7 298.6 299.4 285.9 311.8 4.44 14 861 1395 13.0 3.0 51 10.0 7.6 317 7 298.7 299.7 287.1 315.0 5.52 15 854 1464 12.8 7.8 72 5.0 9.9 316 7 299.2 300.6 289.4 322.1 7.79 16 850 1503 12.6 8.1 74 4.5 9.9 315 7 299.3 300.8 289.6 322.9 8.00 17 846 1543 12.6 8.7 77 3.9 10.3 291 10 299.7 301.3 290.1 324.4 8.37 18 808 1928 11.8 5.8 67 6.0 8.3 305 13 302.9 304.2 290.0 324.3 7.17 19 798 2033 11.0 6.6 74 4.4 8.5 305 14 303.1 304.5 290.6 326.1 7.68 20 793 2085 11.0 5.0 66 6.0 7.6 305 14 303.6 304.9 290.1 324.4 6.91 21 775 2277 10.0 4.0 66 6.0 6.6 303 15 304.6 305.8 290.1 324.5 6.59 22 769 2342 9.4 5.4 76 4.0 7.1 302 16 304.6 306.0 290.7 326.7 7.33 23 733 2739 7.6 4.1 78 3.5 5.6 305 19 306.8 308.1 291.2 328.2 7.02 24 716 2932 7.0 2.9 75 4.1 4.7 303 22 308.2 309.5 291.3 328.5 6.60 25 707 3036 6.4 2.9 78 3.5 4.5 301 24 308.7 309.9 291.5 329.2 6.68 26 700 3118 5.8 2.8 81 3.0 4.1 300 26 308.9 310.2 291.6 329.5 6.70 27 655 3659 2.2 -0.8 81 3.0 0.7 305 28 310.8 311.8 291.1 327.9 5.52 28 616 4152 -1.5 -1.5 100 0.0 -1.5 297 28 312.0 313.1 291.6 329.5 5.57 29 611 4218 -1.3 -3.6 84 2.3 -2.4 296 28 313.0 313.9 291.2 328.1 4.80 30 593 4456 -2.9 -5.3 83 2.4 -4.0 296 27 313.8 314.6 291.0 327.6 4.35 31 559 4922 -5.9 -6.5 96 0.6 -6.2 300 23 315.6 316.4 291.5 329.1 4.21 32 558 4936 -5.9 -6.5 96 0.6 -6.2 299 23 315.8 316.6 291.5 329.3 4.22 33 553 5007 -5.9 -6.9 93 1.0 -6.4 298 24 316.6 317.4 291.7 329.9 4.12 34 550 5049 -5.9 -9.4 76 3.5 -7.4 297 24 317.1 317.7 291.2 328.2 3.41 35 549 5063 -5.9 -10.3 71 4.4 -7.7 297 24 317.2 317.9 291.0 327.6 3.18 36 545 5121 -6.1 -11.1 68 5.0 -8.1 296 25 317.7 318.3 291.0 327.5 3.01 37 520 5487 -9.1 -13.0 73 3.9 -10.6 290 28 318.4 318.9 290.9 327.3 2.70 38 516 5547 -9.3 -14.1 68 4.8 -11.1 289 29 318.8 319.3 290.9 327.1 2.49 39 500 5790 -11.5 -14.8 76 3.3 -12.7 285 31 319.0 319.5 290.9 327.1 2.43 40 475 6181 -14.5 -15.9 89 1.4 -15.0 291 27 320.0 320.5 291.1 327.8 2.33 41 471 6245 -14.9 -15.9 92 1.0 -15.2 297 27 320.3 320.8 291.2 328.2 2.35 42 447 6638 -17.5 -19.8 82 2.3 -18.1 306 25 321.9 322.2 291.1 327.9 1.78 43 432 6893 -19.5 -21.1 87 1.6 -20.0 302 25 322.5 322.8 291.2 328.1 1.64 44 429 6944 -19.7 -20.4 94 0.7 -19.9 301 25 322.9 323.2 291.4 328.9 1.76 45 409 7297 -22.1 -23.7 87 1.6 -22.5 303 25 324.2 324.5 291.5 329.0 1.38 46 400 7460 -23.3 -24.4 91 1.1 -23.5 305 25 324.7 325.0 291.5 329.3 1.33 47 395 7552 -24.1 -25.2 91 1.1 -24.4 305 24 324.8 325.1 291.5 329.2 1.25 48 384 7757 -25.5 -28.4 77 2.9 -26.1 309 22 325.6 325.8 291.5 329.0 0.96 49 375 7929 -26.5 -29.0 79 2.5 -27.0 315 20 326.5 326.7 291.7 329.8 0.93 50 365 8123 -28.1 -30.6 79 2.5 -28.5 291 21 326.9 327.1 291.7 329.9 0.82 51 349 8443 -30.5 -33.6 74 3.1 -31.0 274 21 327.9 328.0 291.8 330.2 0.64 52 333 8774 -33.3 -36.0 77 2.7 -33.7 272 22 328.5 328.6 291.8 330.5 0.53 53 322 9009 -34.7 -37.0 80 2.3 -35.0 271 22 329.7 329.8 292.2 331.6 0.50 54 320 9053 -34.7 -37.4 76 2.7 -35.0 271 22 330.3 330.4 292.3 332.1 0.48 55 300 9500 -38.3 -41.2 74 2.9 -38.6 270 17 331.4 331.5 292.4 332.7 0.35 56 250 10730 -48.7 -52.3 66 3.6 -48.8 265 30 333.7 333.7 292.8 334.1 0.12 57 207 11943 -57.5 -63.5 46 6.0 -57.6 250 33 338.4 338.4 294.0 338.5 0.04 58 200 12160 -56.3 -69.3 18 13.0 -56.5 285 28 343.6 343.6 295.2 343.7 0.02 59 150 13980 -61.7 -82.7 4 21.0 -61.9 280 37 363.8 363.8 299.4 363.8 0.00 60 100 16420 -70.5 -86.5 8 16.0 -70.6 295 33 391.5 391.5 304.0 391.5 0.00 61 93 16855 -66.3 -86.3 4 20.0 -66.4 297 36 408.0 408.0 306.3 408.0 0.00 62 87 17261 -64.5 -86.5 3 22.0 -64.7 303 36 419.5 419.5 307.7 419.5 0.00 63 81 17696 -66.5 -86.5 4 20.0 -66.7 310 25 424.0 424.0 308.2 424.1 0.00 64 73 18325 -66.9 -87.9 4 21.0 -67.1 272 15 436.0 436.0 309.4 436.0 0.00 65 70 18580 -64.7 -88.7 2 24.0 -64.9 320 23 446.0 446.0 310.5 446.0 0.00 66 69 18668 -64.3 -88.3 2 24.0 -64.6 307 22 448.7 448.7 310.7 448.7 0.00 67 67 18848 -65.1 -88.1 3 23.0 -65.3 322 20 450.7 450.7 310.9 450.7 0.00 68 50 20650 -62.1 -88.1 2 26.0 -62.6 330 10 497.1 497.1 314.8 497.2 0.00 69 39 22195 -59.7 -86.7 2 27.0 -60.4 253 4 539.8 539.8 317.5 539.9 0.01 70 34 23062 -55.5 -85.5 1 30.0 -56.9 291 12 572.5 572.5 319.3 572.5 0.01 71 32 23447 -56.9 -85.9 1 29.0 -58.1 285 12 578.7 578.7 319.6 578.8 0.01 72 30 23860 -53.1 -84.1 1 31.0 -55.0 305 7 599.9 599.9 320.6 600.0 0.01 73 27 24540 -51.1 -83.1 1 32.0 -53.6 266 9 623.9 623.9 321.6 624.0 0.01 74 22 25863 -52.9 -83.9 1 31.0 -55.4 259 20 656.1 656.1 322.9 656.2 0.02 75 20 26480 -50.3 -82.3 1 32.0 -53.7 225 15 682.2 682.2 323.9 682.4 0.02 76 18 27166 -52.1 -83.1 1 31.0 -55.2 245 16 697.4 697.4 324.4 697.6 0.02 77 17 27538 -49.9 -82.9 1 33.0 -53.8 249 15 716.0 716.0 325.0 716.1 0.02 78 15 28354 -51.9 -83.9 1 32.0 -55.5 231 31 735.4 735.4 325.5 735.6 0.02 79 13 29287 -49.5 -82.5 1 33.0 -54.4 251 26 774.4 774.4 326.6 774.7 0.03 80 11 30378 -51.3 -83.3 1 32.0 -56.0 235 27 805.8 805.8 327.4 806.1 0.03 81 10 31000 -49.5 -82.5 1 33.0 -55.2 235 16 834.8 834.8 328.1 835.2 0.04 82 8.7 31917 -46.7 -81.7 1 35.0 -54.1 245 23 879.6 879.6 329.0 880.2 0.06 83 8.4 32150 -47.5 -81.5 1 34.0 -54.7 247 24 885.3 885.3 329.1 885.9 0.06 84 8.1 32392 -43.9 -80.9 1 37.0 -53.0 250 26 908.8 908.9 329.6 909.6 0.07 85 7.7 32732 -43.5 -80.5 1 37.0 -53.1 253 28 923.7 923.7 329.9 924.6 0.08 86 7.2 33182 -45.3 -81.3 1 36.0 -54.2 258 32 934.2 934.3 330.1 935.0 0.07 87 7.0 33370 -44.1 -81.1 1 37.0 -53.8 260 33 946.7 946.8 330.3 947.6 0.08 88 6.8 33565 -42.5 -79.5 1 37.0 -53.2 961.3 961.4 330.5 962.5 0.11 TRP 207 11943 -57.5 -63.5 46 6.0 -57.6 250 33 338.4 338.4 294.0 338.5 0.04 WND Sounding variables and indices 1000-500 mb thick: 5655.00 m Freezing level: 631.81 mb = 3952.49 m = 12967.33 ft Wetbulb zero: 643.05 mb = 3807.13 m = 12490.45 ft Precipitable water: 1.16 inches Sfc-500 mean rel hum: 69.48 % Est. max temperature: 26.37 C = 79.47 F Sfc-Lift cond lev (LCL): 962.49 mb = 457.73 m = 1501.71 ft T: 14.88 C 700-500 lapse rate: 6.47 C/km ThetaE index: 5.74 C Layer 866.0- 864.0 mb Conv cond level (CCL): 539.53 mb = 5199.53 m = 17058.61 ft Mean mixing ratio: 4.28 g/kg Conv temperature: 45.22 C = 113.39 F Cap Strength: 15.41 C Lifted Index: 15.14 C Risk: None Lifted Index @300 mb: 19.98 C Lifted Index @700 mb: 13.34 C Showalter Index: 3.33 C Risk: None Total Totals Index: 43.70 C Risk: None Vertical Totals Index: 24.10 C Cross Totals Index: 19.60 C K Index: 29.20 Risk: 40-60 % chance of thunderstorms Sweat Index: 142.20 Risk: None Energy Index: 0.88 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 36.54 J/kg Max Up Vert Vel: 8.55 m/s Conv Inhibition (B-): 59837.59 J/kg Cap Strength: 15.39 C Lift Cond Lev (LCL): 783.30 mb = 2188.01 m = 7178.43 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 323 at 15 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 1006 98 0 0 -0.0 -0.0 | 143 15 -9.2 12.1 1 1000 135 200 7 2.4 6.6 | 160 20 -6.8 18.7 2 980 305 210 15 7.5 13.0 | 176 25 -1.7 25.1 3 945 610 215 10 5.7 8.2 | 170 21 -3.5 20.3 4 925 794 195 9 2.3 8.7 | 162 22 -6.9 20.8 5 912 914 200 8 2.7 7.5 | 162 21 -6.5 19.6 6 879 1219 320 7 4.5 -5.4 | 145 8 -4.7 6.7 7 850 1503 315 7 4.9 -4.9 | 149 8 -4.3 7.1 8 848 1524 290 10 9.4 -3.4 | 181 9 0.2 8.7 9 817 1829 305 12 9.8 -6.9 | 186 5 0.6 5.2 10 788 2134 305 15 12.3 -8.6 | 221 5 3.0 3.5 11 760 2438 300 16 13.9 -8.0 | 229 6 4.6 4.1 12 732 2743 305 19 15.6 -10.9 | 259 6 6.3 1.2 13 700 3118 300 26 22.5 -13.0 | 274 13 13.3 -0.9 14 680 3353 300 31 26.8 -15.5 | 281 18 17.6 -3.4 15 654 3658 305 28 22.9 -16.1 | 286 14 13.7 -4.0 16 606 4267 295 28 25.4 -11.8 | 269 16 16.1 0.2 17 561 4877 300 23 19.9 -11.5 | 267 11 10.7 0.6 18 500 5790 285 31 29.9 -8.0 | 259 21 20.7 4.1 19 500 5791 280 28 27.6 -4.9 | 249 20 18.3 7.2 20 480 6096 285 28 27.0 -7.2 | 255 18 17.8 4.8 21 461 6401 310 25 19.2 -16.1 | 292 11 9.9 -4.0 22 425 7010 300 25 21.7 -12.5 | 272 12 12.4 -0.4 23 400 7460 305 25 20.5 -14.3 | 281 11 11.2 -2.3 24 391 7620 305 24 19.7 -13.8 | 279 11 10.4 -1.7 25 375 7925 315 20 14.1 -14.1 | 293 5 4.9 -2.1 26 359 8230 275 21 20.9 -1.8 | 229 16 11.7 10.2 27 315 9144 270 22 22.0 -0.0 | 227 18 12.8 12.1 28 300 9500 270 17 17.0 -0.0 | 213 14 7.8 12.1 29 250 10730 265 30 29.9 2.6 | 235 25 20.6 14.7 30 230 11278 265 30 29.9 2.6 | 235 25 20.6 14.7 31 209 11887 245 36 32.6 15.2 | 221 36 23.4 27.3 32 207 11943 250 33 31.0 11.3 | 223 32 21.8 23.4 33 200 12160 285 28 27.0 -7.2 | 255 18 17.8 4.8 34 190 12497 305 26 21.3 -14.9 | 283 12 12.1 -2.8 35 181 12802 280 20 19.7 -3.5 | 231 14 10.5 8.6 36 156 13716 280 21 20.7 -3.6 | 234 14 11.4 8.4 37 150 13980 280 37 36.4 -6.4 | 258 28 27.2 5.7 38 135 14630 285 46 44.4 -11.9 | 270 35 35.2 0.2 39 122 15240 300 26 22.5 -13.0 | 274 13 13.3 -0.9 40 116 15545 290 33 31.0 -11.3 | 268 22 21.8 0.8 41 110 15850 300 39 33.8 -19.5 | 287 26 24.5 -7.4 42 105 16154 305 37 30.3 -21.2 | 293 23 21.1 -9.1 43 100 16420 295 33 29.9 -13.9 | 275 21 20.7 -1.9 44 94 16764 295 33 29.9 -13.9 | 275 21 20.7 -1.9 45 90 17069 300 41 35.5 -20.5 | 288 28 26.3 -8.4 46 77 17983 315 18 12.7 -12.7 | 281 4 3.5 -0.6 47 73 18288 265 14 13.9 1.2 | 199 14 4.7 13.3 48 70 18580 320 23 14.8 -17.6 | 315 8 5.5 -5.5 49 70 18593 300 23 19.9 -11.5 | 267 11 10.7 0.6 50 60 19507 20 11 -3.8 -10.3 | 98 13 -13.0 1.7 51 57 19812 310 10 7.7 -6.4 | 164 6 -1.6 5.7 52 55 20117 210 10 5.0 8.7 | 168 21 -4.2 20.7 53 50 20650 330 10 5.0 -8.7 | 129 5 -4.2 3.4 54 49 20726 300 13 11.3 -6.5 | 200 6 2.0 5.6 55 47 21031 330 10 5.0 -8.7 | 129 5 -4.2 3.4 56 45 21336 175 3 -0.3 3.0 | 148 18 -9.5 15.1 57 43 21641 270 16 16.0 -0.0 | 209 14 6.8 12.1 58 41 21946 305 10 8.2 -5.7 | 171 6 -1.1 6.3 59 39 22250 245 3 2.7 1.3 | 154 15 -6.5 13.3 60 37 22555 285 14 13.5 -3.6 | 207 9 4.3 8.5 61 35 22860 295 11 10.0 -4.6 | 186 7 0.7 7.4 62 34 23165 290 12 11.3 -4.1 | 194 8 2.0 8.0 63 32 23470 285 12 11.6 -3.1 | 195 9 2.3 9.0 64 30 23774 305 10 8.2 -5.7 | 171 6 -1.1 6.3 65 30 23860 305 7 5.7 -4.0 | 156 9 -3.5 8.1 66 29 24079 315 10 7.1 -7.1 | 157 5 -2.2 5.0 67 28 24384 320 7 4.5 -5.4 | 145 8 -4.7 6.7 68 26 24689 215 11 6.3 9.0 | 172 21 -2.9 21.1 69 24 25298 250 28 26.3 9.6 | 218 28 17.1 21.7 70 22 25908 260 19 18.7 3.3 | 212 18 9.5 15.4 71 21 26213 250 10 9.4 3.4 | 181 16 0.2 15.5 72 20 26480 225 15 10.6 10.6 | 183 23 1.4 22.7 73 19 26822 220 17 10.9 13.0 | 184 25 1.7 25.1 74 17 27432 265 16 15.9 1.4 | 206 15 6.7 13.5 75 16 27737 220 13 8.4 10.0 | 178 22 -0.9 22.0 76 16 28042 210 21 10.5 18.2 | 182 30 1.3 30.3 77 14 28651 250 40 37.6 13.7 | 228 38 28.3 25.8 78 14 28956 240 25 21.7 12.5 | 207 28 12.4 24.6 79 12 29566 260 26 25.6 4.5 | 225 23 16.4 16.6 80 12 29870 240 27 23.4 13.5 | 209 29 14.1 25.6 81 11 30175 235 31 25.4 17.8 | 208 34 16.2 29.9 82 10 31000 235 16 13.1 9.2 | 190 22 3.9 21.3 83 7 33370 260 33 32.5 5.7 | 233 29 23.3 17.8 Wind Parameters Mean winds (0-6000m): 292.6 at 20.3 knts Storm direction: 322.6 at 15.2 knts Shear (0-3000m) pos: 3.1 neg: 2.8 tot: 5.9 10-3/s Storm rel Dir Shear (0-3000m): 131.1 deg Storm rel helicity (0-3000m) pos: 99.5 neg: -40.6 tot: 58.8 m^2/s^2 ave: 19.6 10^-3 m/s^2 rel: 0.32 Storm rel vorticity (0-3000m) horiz: 10.6 stream: 3.4 10^-3/s Energy-Hel index: 0.02 Bulk Rich Number: 0.58 Bulk Shear: 63.28 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 ------------------------------------------------------------------------------- 500 210 11 170 22| 0.0 10.5 10.5| 58.4 -11.5 46.9 93.8 0.48| 20.2 9.7 1000 211 10 169 21| 4.5 5.2 9.8| 72.8 -30.1 42.7 42.7 0.27| 17.4 4.7 1500 230 9 173 18| 4.5 3.5 8.0| 83.4 -40.6 42.7 28.5 0.23| 15.4 3.5 2000 258 10 182 14| 4.6 2.6 7.2| 87.4 -40.6 46.8 23.4 0.26| 12.9 3.4 2500 275 11 189 11| 3.7 2.3 6.0| 91.6 -40.6 51.0 20.4 0.30| 11.0 3.3 3000 285 13 200 9| 3.1 2.8 5.9| 99.5 -40.6 58.8 19.6 0.32| 10.6 3.4 4000 293 17 229 8| 2.7 2.4 5.1|112.4 -52.6 59.8 15.0 0.27| 9.5 2.5 5000 294 19 241 9| 2.2 1.8 3.9|112.4 -60.1 52.3 10.5 0.22| 8.4 1.8 6000 293 20 246 10| 1.8 2.0 3.8|123.0 -88.0 35.1 5.8 0.15| 8.2 1.2 Wrote GIF file: /home/apache/climate/data/raob//KIAD/skewt/KIAD.skewt.20251018.12.gif