UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025102012.upa.cvt Date: 1200Z 20 OCT 25 Searching for KIAD... Searching the city database file for: KIAD ... Date:1200Z 20 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 1002 98 11.4 5.4 67 6.0 8.3 255 8 284.4 285.4 281.4 300.1 5.61 1 1000 101 11.8 4.8 62 7.0 8.2 265 8 285.0 285.9 281.4 300.1 5.39 2 998 118 11.8 4.8 62 7.0 8.2 266 9 285.1 286.1 281.4 300.3 5.40 3 925 748 7.0 2.2 71 4.8 4.6 295 33 286.5 287.3 281.4 300.2 4.85 4 855 1390 1.6 0.2 90 1.4 1.0 312 43 287.3 288.1 281.4 300.3 4.54 5 850 1437 2.6 -0.7 79 3.3 1.1 315 43 288.9 289.6 281.8 301.2 4.27 6 846 1475 3.4 -1.6 70 5.0 1.1 317 42 290.1 290.8 282.1 301.7 4.02 7 839 1543 3.4 -2.6 65 6.0 0.8 319 41 290.8 291.5 282.1 301.8 3.76 8 790 2028 0.8 -4.2 69 5.0 -1.3 307 40 293.1 293.7 282.8 303.5 3.54 9 781 2120 0.4 -4.3 71 4.7 -1.6 305 40 293.6 294.2 283.0 304.1 3.56 10 779 2141 0.4 -4.1 72 4.5 -1.5 305 40 293.8 294.5 283.2 304.5 3.62 11 776 2172 0.6 -3.9 72 4.5 -1.3 304 40 294.3 295.0 283.5 305.3 3.69 12 724 2724 -3.5 -6.4 80 2.9 -4.7 300 37 295.7 296.3 283.6 305.5 3.27 13 714 2834 -4.3 -6.2 87 1.9 -5.1 300 37 296.0 296.6 283.8 306.1 3.37 14 708 2901 -4.7 -6.0 91 1.3 -5.3 300 38 296.3 296.9 284.0 306.6 3.45 15 700 2990 -5.1 -6.4 91 1.3 -5.6 300 38 296.8 297.4 284.2 307.0 3.38 16 664 3403 -7.7 -8.6 93 0.9 -8.1 291 34 298.4 299.0 284.4 307.6 3.01 17 650 3569 -8.5 -10.5 85 2.0 -9.2 287 32 299.3 299.8 284.4 307.4 2.64 18 646 3617 -8.9 -10.8 86 1.9 -9.6 286 32 299.4 299.9 284.3 307.4 2.60 19 611 4045 -12.7 -12.8 99 0.1 -12.8 285 34 299.9 300.3 284.2 307.1 2.34 20 604 4133 -11.5 -15.6 72 4.1 -12.8 285 35 302.2 302.6 284.6 308.1 1.88 21 573 4536 -13.5 -19.5 61 6.0 -15.1 289 37 304.5 304.7 284.9 309.1 1.42 22 551 4833 -15.1 -24.1 46 9.0 -17.2 294 38 306.0 306.2 285.1 309.3 0.99 23 515 5341 -18.9 -28.9 41 10.0 -20.8 295 42 307.4 307.5 285.2 309.7 0.68 24 500 5560 -20.9 -29.9 44 9.0 -22.5 295 44 307.6 307.7 285.2 309.7 0.64 25 412 6953 -33.7 -34.3 94 0.6 -33.8 295 35 308.6 308.7 285.4 310.3 0.51 26 406 7056 -34.9 -36.9 82 2.0 -35.1 292 38 308.3 308.4 285.2 309.7 0.40 27 404 7090 -34.9 -38.6 69 3.7 -35.3 290 42 308.8 308.8 285.3 309.9 0.34 28 403 7107 -34.9 -40.9 54 6.0 -35.4 289 43 309.0 309.0 285.3 309.9 0.27 29 402 7125 -34.1 -52.1 15 18.0 -35.1 288 43 310.2 310.2 285.5 310.5 0.08 30 401 7142 -31.7 -60.7 4 29.0 -33.1 286 44 313.6 313.6 286.6 313.7 0.03 31 400 7160 -31.7 -60.7 4 29.0 -33.2 285 45 313.8 313.8 286.7 313.9 0.03 32 397 7213 -30.9 -62.9 3 32.0 -32.5 285 46 315.5 315.5 287.3 315.6 0.02 33 387 7394 -29.5 -64.5 2 35.0 -31.4 286 46 319.7 319.7 288.6 319.7 0.02 34 361 7884 -33.7 -65.7 3 32.0 -35.1 286 34 320.5 320.5 288.9 320.5 0.02 35 348 8140 -34.1 -67.1 2 33.0 -35.5 282 33 323.3 323.3 289.8 323.3 0.01 36 326 8598 -32.1 -70.1 1 38.0 -33.8 265 37 332.1 332.1 292.3 332.2 0.01 37 300 9180 -34.5 -70.5 1 36.0 -36.0 245 48 336.7 336.7 293.5 336.8 0.01 38 273 9838 -36.7 -71.7 1 35.0 -38.1 248 53 342.8 342.8 295.0 342.8 0.01 39 271 9889 -35.7 -72.7 1 37.0 -37.2 251 51 344.9 344.9 295.5 345.0 0.01 40 250 10450 -36.5 -74.5 1 38.0 -38.0 270 35 351.8 351.8 297.0 351.8 0.01 41 213 11546 -40.3 -76.3 1 36.0 -41.5 254 36 362.4 362.4 299.2 362.4 0.01 42 200 11970 -43.9 -77.9 1 34.0 -44.8 235 40 363.3 363.3 299.3 363.3 0.00 43 194 12174 -45.7 -77.7 2 32.0 -46.5 230 43 363.6 363.6 299.4 363.6 0.00 44 183 12563 -46.5 -79.5 1 33.0 -47.3 239 47 368.4 368.4 300.3 368.4 0.00 45 182 12599 -46.5 -79.5 1 33.0 -47.3 240 47 369.0 369.0 300.4 369.0 0.00 46 179 12710 -45.7 -78.7 1 33.0 -46.6 243 48 372.0 372.0 300.9 372.0 0.00 47 150 13870 -53.1 -82.1 2 29.0 -53.5 235 50 378.6 378.6 302.0 378.6 0.00 48 137 14450 -56.4 -83.6 2 27.1 -56.8 250 60 382.6 382.6 302.7 382.7 0.00 49 136 14497 -56.7 -83.7 2 27.0 -57.1 250 60 383.0 383.0 302.7 383.0 0.00 50 133 14639 -54.3 -84.3 1 30.0 -54.8 250 60 389.7 389.7 303.8 389.7 0.00 51 110 15832 -63.1 -86.1 3 23.0 -63.3 256 16 394.9 394.9 304.5 394.9 0.00 52 100 16420 -62.5 -86.5 3 24.0 -62.7 275 25 407.0 407.0 306.1 407.0 0.00 53 98 16545 -61.7 -86.7 2 25.0 -61.9 275 25 410.9 410.9 306.6 410.9 0.00 54 85 17420 -64.9 -86.9 3 22.0 -65.1 259 21 421.5 421.5 307.9 421.5 0.00 55 81 17715 -63.3 -87.3 2 24.0 -63.6 268 14 430.6 430.6 308.9 430.6 0.00 56 78 17946 -65.3 -88.3 3 23.0 -65.5 255 12 431.1 431.1 309.0 431.1 0.00 57 70 18610 -62.5 -88.5 2 26.0 -62.8 220 18 450.7 450.7 310.9 450.7 0.00 58 69 18699 -62.3 -88.3 2 26.0 -62.6 223 18 453.0 453.0 311.1 453.0 0.00 59 61 19457 -63.1 -89.1 2 26.0 -63.4 291 15 467.4 467.4 312.4 467.4 0.00 60 55 20088 -66.7 -89.7 3 23.0 -66.9 356 1 473.2 473.2 312.9 473.2 0.00 61 52 20428 -64.9 -89.9 2 25.0 -65.2 172 10 485.1 485.1 313.8 485.1 0.00 62 51 20547 -61.3 -89.3 1 28.0 -61.8 198 8 496.2 496.2 314.7 496.2 0.00 63 50 20670 -60.9 -88.9 1 28.0 -61.4 225 6 500.0 500.0 314.9 500.0 0.00 64 48 20925 -60.3 -88.3 1 28.0 -60.9 215 12 507.3 507.3 315.5 507.3 0.00 65 47 21056 -61.5 -89.5 1 28.0 -62.0 240 10 507.5 507.5 315.5 507.5 0.00 66 45 21327 -58.7 -87.7 1 29.0 -59.5 33 7 520.6 520.6 316.4 520.6 0.00 67 39 22223 -60.7 -88.7 1 28.0 -61.4 160 10 537.3 537.3 317.3 537.3 0.00 68 36 22725 -57.9 -87.9 1 30.0 -58.9 333 10 557.0 557.0 318.5 557.0 0.00 69 31 23672 -56.5 -87.5 1 31.0 -57.8 257 16 585.1 585.1 319.9 585.1 0.01 70 30 23880 -56.7 -86.7 1 30.0 -58.0 255 16 590.1 590.1 320.2 590.1 0.01 71 29 24095 -56.7 -86.7 1 30.0 -58.0 255 16 595.8 595.8 320.4 595.9 0.01 72 26 24792 -53.7 -85.7 1 32.0 -55.8 262 24 623.2 623.2 321.6 623.3 0.01 73 23 25582 -52.9 -85.9 1 33.0 -55.3 281 18 647.8 647.8 322.6 647.9 0.01 74 21 26167 -54.5 -86.5 1 32.0 -56.8 286 23 660.1 660.1 323.0 660.2 0.01 75 20 26480 -53.1 -86.1 1 33.0 -55.8 295 23 673.6 673.6 323.6 673.7 0.01 76 19 26811 -52.9 -85.9 1 33.0 -55.7 290 21 684.2 684.2 323.9 684.3 0.01 77 18 27159 -53.5 -85.5 1 32.0 -56.3 287 21 693.0 693.0 324.2 693.1 0.01 78 17 27528 -52.1 -85.1 1 33.0 -55.4 302 24 708.9 708.9 324.7 709.0 0.02 79 15 28337 -52.7 -85.7 1 33.0 -56.1 260 19 732.7 732.7 325.4 732.9 0.02 80 13 29254 -55.7 -86.7 1 31.0 -58.6 260 32 753.0 753.0 326.0 753.1 0.02 81 12 29766 -53.9 -86.9 1 33.0 -57.5 262 41 776.8 776.8 326.7 776.9 0.02 82 12 29766 -51.1 -85.1 1 34.0 -55.6 262 41 786.7 786.7 326.9 786.9 0.02 83 10 30960 -48.1 -83.1 1 35.0 -54.4 285 46 840.0 840.0 328.2 840.4 0.04 84 9.3 31437 -49.1 -84.1 1 35.0 -55.2 278 45 853.8 853.8 328.5 854.1 0.04 85 8.1 32350 -45.3 -82.3 1 37.0 -53.7 264 44 903.3 903.3 329.5 903.9 0.06 86 7.0 33320 -46.5 -83.5 1 37.0 -54.9 250 42 936.8 936.9 330.1 937.4 0.05 87 6.9 33416 -46.3 -83.3 1 37.0 -54.9 941.5 941.5 330.2 942.1 0.06 TRP 404 7090 -34.9 -38.6 69 3.7 -35.3 290 42 308.8 308.8 285.3 309.9 0.34 WND 137 14450 -56.4 -83.6 2 27.1 -56.8 250 60 382.6 382.6 302.7 382.7 0.00 Sounding variables and indices 1000-500 mb thick: 5459.00 m Freezing level: 768.39 mb = 2252.65 m = 7390.49 ft Wetbulb zero: 821.28 mb = 1714.86 m = 5626.12 ft Precipitable water: 0.69 inches Sfc-500 mean rel hum: 71.64 % Est. max temperature: 15.27 C = 59.49 F Sfc-Lift cond lev (LCL): 914.91 mb = 837.43 m = 2747.45 ft T: 6.25 C 700-500 lapse rate: 6.15 C/km ThetaE index: 0.07 C Layer 925.0- 855.0 mb Conv cond level (CCL): 856.23 mb = 1377.84 m = 4520.42 ft Mean mixing ratio: 5.06 g/kg Conv temperature: 14.34 C = 57.81 F Cap Strength: 8.09 C Lifted Index: 7.91 C Risk: None Lifted Index @300 mb: 26.01 C Lifted Index @700 mb: 4.20 C Showalter Index: 7.26 C Risk: None Total Totals Index: 43.70 C Risk: None Vertical Totals Index: 23.50 C Cross Totals Index: 20.20 C K Index: 21.50 Risk: 20-40 % chance of thunderstorms Sweat Index: 130.00 Risk: None Energy Index: 1.80 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 4.30 J/kg Max Up Vert Vel: 2.93 m/s Conv Inhibition (B-): 60668.26 J/kg Cap Strength: 8.06 C Lift Cond Lev (LCL): 873.88 mb = 1211.48 m = 3974.61 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 327 at 28 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 1002 98 255 8 7.7 2.1 | 164 26 -7.4 25.1 1 1000 101 265 8 8.0 0.7 | 163 25 -7.1 23.7 2 976 305 280 18 17.7 -3.1 | 188 20 2.6 19.9 3 941 610 285 27 26.1 -7.0 | 214 19 11.0 16.0 4 925 748 295 33 29.9 -13.9 | 239 17 14.8 9.1 5 906 914 295 36 32.6 -15.2 | 246 19 17.5 7.8 6 873 1219 300 44 38.1 -22.0 | 267 23 23.0 1.0 7 850 1437 315 43 30.4 -30.4 | 296 17 15.3 -7.4 8 841 1524 320 41 26.4 -31.4 | 307 14 11.3 -8.4 9 809 1829 310 39 29.9 -25.1 | 278 15 14.8 -2.0 10 779 2134 305 40 32.8 -22.9 | 270 18 17.7 0.1 11 750 2438 300 38 32.9 -19.0 | 257 18 17.8 4.0 12 722 2743 300 37 32.0 -18.5 | 255 18 17.0 4.5 13 700 2990 300 38 32.9 -19.0 | 257 18 17.8 4.0 14 641 3658 285 31 29.9 -8.0 | 225 21 14.9 15.0 15 592 4267 285 36 34.8 -9.3 | 235 24 19.7 13.7 16 547 4877 295 38 34.4 -16.1 | 250 21 19.4 7.0 17 500 5560 295 44 39.9 -18.6 | 260 25 24.8 4.4 18 484 5791 300 46 39.8 -23.0 | 270 25 24.8 0.0 19 464 6096 300 44 38.1 -22.0 | 267 23 23.0 1.0 20 409 7010 295 34 30.8 -14.4 | 241 18 15.7 8.7 21 404 7090 290 42 39.5 -14.4 | 250 26 24.4 8.7 22 400 7160 285 45 43.5 -11.6 | 248 31 28.4 11.4 23 391 7315 285 49 47.3 -12.7 | 252 34 32.2 10.3 24 375 7620 290 36 33.8 -12.3 | 240 22 18.7 10.7 25 343 8230 280 32 31.5 -5.6 | 223 24 16.4 17.5 26 315 8839 255 40 38.6 10.4 | 215 41 23.6 33.4 27 302 9144 245 42 38.1 17.7 | 209 47 23.0 40.8 28 300 9180 245 48 43.5 20.3 | 213 52 28.4 43.3 29 276 9754 245 55 49.8 23.2 | 217 58 34.8 46.3 30 253 10363 270 39 39.0 -0.0 | 226 33 23.9 23.0 31 250 10450 270 35 35.0 -0.0 | 221 30 19.9 23.0 32 232 10973 245 36 32.6 15.2 | 205 42 17.5 38.2 33 212 11582 255 36 34.8 9.3 | 211 38 19.7 32.3 34 200 11970 235 40 32.8 22.9 | 201 49 17.7 46.0 35 193 12192 230 43 32.9 27.6 | 199 54 17.9 50.7 36 176 12802 245 49 44.4 20.7 | 214 53 29.3 43.7 37 161 13411 245 35 31.7 14.8 | 204 41 16.6 37.8 38 150 13870 235 50 41.0 28.7 | 207 58 25.9 51.7 39 147 14021 235 49 40.1 28.1 | 206 57 25.1 51.1 40 137 14450 250 60 56.4 20.5 | 223 60 41.3 43.5 41 133 14630 250 60 56.4 20.5 | 223 60 41.3 43.5 42 121 15240 280 27 26.6 -4.7 | 212 22 11.5 18.3 43 110 15850 255 16 15.5 4.1 | 181 27 0.4 27.2 44 104 16154 235 21 17.2 12.0 | 183 35 2.1 35.1 45 100 16420 275 25 24.9 -2.2 | 205 23 9.8 20.8 46 95 16764 275 25 24.9 -2.2 | 205 23 9.8 20.8 47 90 17069 245 31 28.1 13.1 | 200 38 13.0 36.1 48 81 17678 270 14 14.0 -0.0 | 177 23 -1.1 23.0 49 74 18288 235 9 7.4 5.2 | 165 29 -7.7 28.2 50 70 18593 205 12 5.1 10.9 | 164 35 -10.0 33.9 51 70 18610 220 18 11.6 13.8 | 175 37 -3.5 36.8 52 67 18898 230 18 13.8 11.6 | 178 35 -1.3 34.6 53 64 19202 270 18 18.0 -0.0 | 187 23 2.9 23.0 54 58 19812 320 11 7.1 -8.4 | 151 17 -8.0 14.6 55 55 20117 0 0 -0.0 -0.0 | 147 28 -15.1 23.0 56 52 20422 170 10 -1.7 9.8 | 153 37 -16.8 32.9 57 50 20670 225 6 4.2 4.2 | 158 29 -10.8 27.3 58 50 20726 195 16 4.1 15.5 | 164 40 -10.9 38.5 59 47 21031 225 10 7.1 7.1 | 165 31 -8.0 30.1 60 45 21336 35 7 -4.0 -5.7 | 132 26 -19.1 17.3 61 43 21641 20 10 -3.4 -9.4 | 126 23 -18.5 13.6 62 39 22250 165 10 -2.6 9.7 | 152 37 -17.7 32.7 63 37 22555 295 10 9.1 -4.2 | 162 20 -6.0 18.8 64 35 22860 360 10 -0.0 -10.0 | 131 20 -15.1 13.0 65 34 23165 220 10 6.4 7.7 | 164 32 -8.7 30.7 66 32 23470 270 17 17.0 -0.0 | 185 23 1.9 23.0 67 31 23774 250 15 14.1 5.1 | 178 28 -1.0 28.2 68 30 23880 255 16 15.5 4.1 | 181 27 0.4 27.2 69 28 24384 255 17 16.4 4.4 | 183 27 1.3 27.4 70 25 24994 265 27 26.9 2.4 | 205 28 11.8 25.4 71 24 25298 295 19 17.2 -8.0 | 188 15 2.1 15.0 72 22 25908 265 17 16.9 1.5 | 184 25 1.9 24.5 73 21 26213 290 24 22.6 -8.2 | 207 17 7.5 14.8 74 20 26480 295 23 20.8 -9.7 | 203 15 5.8 13.3 75 18 27127 285 20 19.3 -5.2 | 193 18 4.2 17.9 76 17 27432 300 27 23.4 -13.5 | 221 13 8.3 9.5 77 16 27737 305 18 14.7 -10.3 | 178 13 -0.3 12.7 78 16 28042 250 13 12.2 4.4 | 174 28 -2.9 27.5 79 14 28651 270 25 25.0 -0.0 | 203 25 9.9 23.0 80 14 28956 240 23 19.9 11.5 | 188 35 4.8 34.5 81 13 29261 260 32 31.5 5.6 | 210 33 16.4 28.6 82 12 29566 250 37 34.8 12.7 | 209 41 19.7 35.7 83 11 30175 285 47 45.4 -12.2 | 250 32 30.3 10.9 84 10 30960 285 46 44.4 -11.9 | 249 31 29.3 11.1 85 7 33320 250 42 39.5 14.4 | 213 45 24.4 37.4 Wind Parameters Mean winds (0-6000m): 296.8 at 36.7 knts Storm direction: 326.8 at 27.5 knts Shear (0-3000m) pos: 6.4 neg: 2.4 tot: 8.8 10-3/s Storm rel Dir Shear (0-3000m): 87.6 deg Storm rel helicity (0-3000m) pos: 255.6 neg: -64.0 tot: 191.6 m^2/s^2 ave: 63.9 10^-3 m/s^2 rel: 0.47 Storm rel vorticity (0-3000m) horiz: 12.2 stream: 5.8 10^-3/s Energy-Hel index: 0.01 Bulk Rich Number: 0.08 Bulk Shear: 52.60 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 ------------------------------------------------------------------------------- 500 280 18 188 20| 20.7 0.0 20.7|102.0 0.0 102.0 204.1 0.91| 20.7 18.8 1000 290 26 214 17| 18.2 0.0 18.2|178.1 0.0 178.1 178.1 0.92| 18.8 17.3 1500 298 32 238 15| 12.9 0.0 12.9|253.5 -3.6 249.9 166.6 0.86| 18.9 16.2 2000 302 34 249 14| 9.6 2.2 11.8|253.5 -32.9 220.6 110.3 0.63| 16.4 10.3 2500 302 35 252 15| 7.7 2.5 10.2|253.5 -54.3 199.3 79.7 0.52| 14.1 7.3 3000 302 35 253 16| 6.4 2.4 8.8|255.6 -64.0 191.6 63.9 0.47| 12.2 5.8 4000 298 35 247 17| 4.8 2.8 7.6|271.5-110.0 161.5 40.4 0.33| 10.8 3.6 5000 297 35 246 18| 4.7 2.2 7.0|320.0-110.0 210.0 42.0 0.38| 9.7 3.7 6000 297 37 250 19| 4.4 1.9 6.3|364.2-116.6 247.7 41.3 0.40| 8.9 3.6 Wrote GIF file: /home/apache/climate/data/raob//KIAD/skewt/KIAD.skewt.20251020.12.gif