UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025120212.upa.cvt Date: 1200Z 2 DEC 25 Searching for KIAD... Searching the city database file for: KIAD ... Date:1200Z 2 DEC 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 1005 98 0.4 -1.2 89 1.6 -0.2 0 0 273.2 273.7 272.6 282.6 3.48 1 1000 131 0.0 -1.6 89 1.6 -0.6 235 3 273.1 273.7 272.5 282.4 3.40 2 979 301 -0.7 -2.0 91 1.3 -1.2 201 10 274.1 274.7 273.1 283.3 3.37 3 963 432 0.2 -0.6 94 0.8 -0.2 196 13 276.3 277.0 274.9 286.7 3.80 4 925 754 -1.1 -1.1 100 0.0 -1.1 180 20 278.2 278.8 276.0 288.7 3.81 5 917 823 -1.3 -1.3 100 0.0 -1.3 178 22 278.7 279.3 276.2 289.2 3.79 6 900 973 -0.9 -0.9 100 0.0 -0.9 177 26 280.6 281.3 277.4 291.6 3.98 7 863 1308 -2.7 -2.7 100 0.0 -2.7 191 37 282.1 282.7 277.8 292.3 3.63 8 859 1345 -2.1 -2.3 99 0.2 -2.2 194 39 283.1 283.7 278.4 293.7 3.76 9 852 1410 0.8 0.8 100 0.0 0.8 199 44 286.8 287.6 281.4 300.3 4.76 10 850 1429 1.0 1.0 100 0.0 1.0 200 45 287.2 288.0 281.7 300.9 4.84 11 828 1641 3.0 3.0 100 0.0 3.0 208 49 291.5 292.5 284.5 308.0 5.74 12 810 1819 3.4 3.3 99 0.1 3.4 219 51 293.7 294.8 285.7 311.1 5.99 13 799 1930 3.0 3.0 100 0.0 3.0 223 53 294.5 295.5 285.9 311.8 5.95 14 794 1981 3.0 3.0 100 0.0 3.0 225 53 295.0 296.1 286.2 312.4 5.99 15 790 2022 3.0 1.7 91 1.3 2.4 226 54 295.4 296.4 285.8 311.5 5.48 16 788 2043 2.8 1.4 90 1.4 2.1 227 54 295.4 296.4 285.7 311.2 5.38 17 762 2313 0.2 0.2 100 0.0 0.2 230 58 295.4 296.4 285.5 310.4 5.10 18 730 2657 -0.7 -0.7 100 0.0 -0.7 226 61 298.1 299.0 286.4 312.9 4.98 19 700 2992 -1.9 -1.9 100 0.0 -1.9 225 60 300.4 301.3 286.9 314.7 4.75 20 571 4589 -10.5 -11.3 94 0.8 -10.8 235 62 308.3 308.8 287.8 317.2 2.82 21 500 5600 -16.9 -18.3 89 1.4 -17.3 235 70 312.4 312.8 288.2 318.4 1.81 22 468 6091 -20.3 -21.6 89 1.3 -20.6 235 71 314.2 314.5 288.4 319.0 1.45 23 400 7230 -28.5 -31.2 78 2.7 -28.9 245 85 317.9 318.1 288.9 320.4 0.71 24 382 7560 -30.9 -33.8 76 2.9 -31.3 245 86 319.0 319.1 289.0 321.0 0.58 25 316 8879 -42.3 -46.1 66 3.8 -42.5 245 98 320.9 321.0 289.3 321.7 0.19 26 312 8965 -42.9 -47.0 64 4.1 -43.1 247 102 321.3 321.3 289.3 321.9 0.18 27 310 9009 -43.1 -49.1 52 6.0 -43.4 248 104 321.6 321.6 289.4 322.1 0.14 28 300 9230 -44.5 -49.1 60 4.6 -44.7 250 119 322.6 322.7 289.8 323.2 0.15 29 294 9365 -45.5 -50.0 60 4.5 -45.7 249 124 323.1 323.1 289.9 323.6 0.13 30 285 9572 -46.5 -50.6 63 4.1 -46.7 247 133 324.5 324.6 290.3 325.0 0.13 31 279 9713 -47.1 -52.1 56 5.0 -47.3 245 138 325.7 325.7 290.6 326.1 0.11 32 278 9736 -46.7 -52.7 50 6.0 -47.0 245 139 326.6 326.6 290.9 327.0 0.10 33 276 9784 -47.3 -53.3 50 6.0 -47.6 245 140 326.4 326.4 290.8 326.8 0.10 34 274 9832 -48.3 -51.5 69 3.2 -48.4 244 140 325.6 325.6 290.6 326.1 0.12 35 273 9856 -48.7 -52.1 68 3.4 -48.8 244 140 325.4 325.4 290.5 325.8 0.11 36 270 9929 -48.9 -52.1 69 3.2 -49.0 244 140 326.1 326.1 290.7 326.6 0.11 37 269 9953 -48.9 -53.6 58 4.7 -49.1 244 140 326.5 326.5 290.8 326.8 0.10 38 267 10002 -48.9 -53.6 58 4.7 -49.1 243 140 327.2 327.2 291.0 327.5 0.10 39 253 10353 -52.5 -54.7 77 2.2 -52.6 241 139 326.9 326.9 290.9 327.3 0.09 40 250 10430 -52.9 -57.7 56 4.8 -53.0 240 139 327.4 327.4 291.0 327.7 0.06 41 248 10482 -53.5 -57.5 62 4.0 -53.6 240 139 327.3 327.3 291.0 327.5 0.07 42 242 10639 -54.9 -59.8 54 4.9 -55.0 240 140 327.5 327.5 291.0 327.7 0.05 43 226 11072 -58.9 -62.3 65 3.4 -59.0 243 145 327.8 327.8 291.2 328.0 0.04 44 221 11212 -59.7 -62.3 72 2.6 -59.7 245 147 328.7 328.7 291.4 328.9 0.04 45 213 11442 -61.3 -66.3 51 5.0 -61.4 247 150 329.7 329.7 291.6 329.8 0.02 46 204 11708 -63.3 -67.4 57 4.1 -63.3 249 153 330.6 330.6 291.9 330.7 0.02 47 200 11830 -63.5 -67.1 61 3.6 -63.6 250 155 332.2 332.2 292.3 332.3 0.02 48 195 11985 -64.1 -67.1 67 3.0 -64.1 252 156 333.7 333.7 292.7 333.8 0.02 49 190 12143 -65.1 -68.4 63 3.3 -65.1 254 157 334.5 334.5 293.0 334.6 0.02 50 189 12176 -65.1 -69.0 58 3.9 -65.1 255 157 335.0 335.0 293.1 335.1 0.02 51 188 12208 -65.3 -70.3 50 5.0 -65.3 255 157 335.2 335.2 293.2 335.3 0.02 52 186 12273 -65.3 -73.3 32 8.0 -65.4 255 158 336.3 336.3 293.4 336.3 0.01 53 184 12339 -65.1 -74.1 28 9.0 -65.1 255 159 337.6 337.6 293.7 337.7 0.01 54 182 12405 -65.2 -73.7 30 8.5 -65.3 255 160 338.5 338.5 294.0 338.6 0.01 55 180 12472 -65.3 -73.3 32 8.0 -65.4 255 160 339.4 339.4 294.2 339.5 0.01 56 170 12819 -66.3 -75.3 27 9.0 -66.4 258 149 343.4 343.4 295.1 343.4 0.01 57 163 13074 -65.3 -80.3 11 15.0 -65.4 260 140 349.2 349.2 296.4 349.2 0.00 58 150 13580 -64.7 -83.7 6 19.0 -64.8 265 123 358.6 358.6 298.4 358.6 0.00 59 100 16080 -62.9 -85.9 3 23.0 -63.1 250 59 406.2 406.2 306.0 406.2 0.00 60 92 16591 -64.9 -85.9 4 21.0 -65.1 252 66 412.0 412.0 306.7 412.1 0.00 61 81 17375 -60.9 -86.9 2 26.0 -61.2 280 60 435.5 435.5 309.4 435.5 0.00 62 74 17937 -61.1 -87.1 2 26.0 -61.4 269 48 446.5 446.5 310.5 446.5 0.00 63 70 18280 -63.1 -87.1 3 24.0 -63.4 260 47 449.4 449.4 310.8 449.4 0.00 64 65 18734 -63.9 -87.9 2 24.0 -64.2 265 52 457.3 457.3 311.5 457.3 0.00 65 64 18829 -63.5 -87.5 2 24.0 -63.8 271 53 460.2 460.2 311.8 460.2 0.00 66 63 18926 -61.1 -87.1 2 26.0 -61.5 276 53 467.5 467.5 312.4 467.6 0.00 67 60 19230 -60.1 -87.1 2 27.0 -60.6 281 45 476.4 476.4 313.1 476.4 0.00 68 59 19334 -60.1 -87.1 2 27.0 -60.6 282 42 478.6 478.7 313.4 478.7 0.00 69 58 19441 -60.7 -86.7 2 26.0 -61.2 284 40 479.6 479.6 313.4 479.7 0.00 70 54 19887 -58.3 -86.3 2 28.0 -58.9 276 25 495.1 495.1 314.6 495.1 0.00 71 50 20370 -59.3 -86.3 2 27.0 -59.9 275 17 503.7 503.7 315.2 503.8 0.00 72 48 20625 -60.5 -86.5 2 26.0 -61.0 275 19 506.8 506.8 315.4 506.8 0.00 73 43 21312 -58.7 -85.7 2 27.0 -59.5 282 12 527.4 527.4 316.8 527.5 0.01 74 41 21610 -59.5 -87.5 1 28.0 -60.2 312 14 532.7 532.7 317.1 532.7 0.00 75 40 21765 -57.9 -85.9 2 28.0 -58.8 298 12 540.4 540.5 317.5 540.5 0.01 76 38 22087 -59.5 -87.5 1 28.0 -60.3 289 15 544.4 544.4 317.8 544.4 0.00 77 36 22427 -56.5 -85.5 1 29.0 -57.6 325 17 560.6 560.6 318.7 560.6 0.01 78 31 23365 -61.1 -87.1 2 26.0 -61.9 75 12 572.7 572.7 319.3 572.7 0.01 79 30 23570 -58.7 -87.7 1 29.0 -59.7 350 23 584.6 584.6 319.9 584.7 0.01 80 29 23783 -58.1 -87.1 1 29.0 -59.3 340 16 592.0 592.0 320.2 592.0 0.01 81 27 24232 -59.9 -86.9 2 27.0 -60.9 10 20 599.1 599.1 320.6 599.2 0.01 82 26 24468 -59.1 -87.1 1 28.0 -60.3 10 13 607.9 607.9 321.0 608.0 0.01 83 24 24967 -61.5 -87.5 2 26.0 -62.4 338 12 615.0 615.0 321.3 615.1 0.01 84 23 25232 -59.3 -87.3 1 28.0 -60.6 350 17 629.0 629.0 321.9 629.1 0.01 85 20 26110 -58.1 -87.1 1 29.0 -59.7 10 16 658.3 658.3 323.0 658.4 0.01 86 19 26433 -58.1 -87.1 1 29.0 -59.8 360 16 668.1 668.1 323.3 668.1 0.01 87 18 26775 -56.3 -87.3 1 31.0 -58.4 348 12 684.2 684.2 323.9 684.2 0.01 88 15 27937 -54.7 -85.7 1 31.0 -57.5 322 18 726.1 726.1 325.3 726.2 0.02 89 13 28847 -57.1 -87.1 1 30.0 -59.6 22 17 748.1 748.1 325.9 748.2 0.02 90 11 29908 -55.3 -86.3 1 31.0 -58.6 4 20 791.3 791.3 327.0 791.4 0.02 91 10 30520 -52.5 -84.5 1 32.0 -57.1 45 31 823.6 823.6 327.8 823.9 0.03 92 10 30520 -51.9 -84.9 1 33.0 -56.6 45 31 825.8 825.8 327.8 826.1 0.03 93 9.6 30784 -52.5 -85.5 1 33.0 -57.2 833.2 833.3 328.0 833.5 0.03 94 9.4 30921 -50.5 -84.5 1 34.0 -56.0 845.9 845.9 328.3 846.2 0.03 95 8.8 31349 -52.7 -83.7 1 31.0 -57.5 853.5 853.5 328.5 853.9 0.04 96 8.0 31965 -52.5 -85.5 1 33.0 -57.7 877.8 877.9 329.0 878.2 0.03 TRP 188 12208 -65.3 -70.3 50 5.0 -65.3 255 157 335.2 335.2 293.2 335.3 0.02 WND 182 12405 -65.2 -73.7 30 8.5 -65.3 255 160 338.5 338.5 294.0 338.6 0.01 Sounding variables and indices 1000-500 mb thick: 5469.00 m Freezing level: 1000.00 mb = 131.00 m = 429.78 ft Freezing level: 966.56 mb = 403.09 m = 1322.45 ft Freezing level: 957.15 mb = 481.85 m = 1580.84 ft Freezing level: 853.93 mb = 1392.01 m = 4566.91 ft Freezing level: 754.89 mb = 2389.68 m = 7840.06 ft Wetbulb zero: Below ground Precipitable water: 0.88 inches Sfc-500 mean rel hum: 96.40 % Est. max temperature: 12.46 C = 54.42 F Sfc-Lift cond lev (LCL): 980.13 mb = 291.42 m = 956.10 ft T: -0.66 C 700-500 lapse rate: 5.75 C/km ThetaE index: 2.03 C Layer 790.0- 730.0 mb Conv cond level (CCL): 867.34 mb = 1267.68 m = 4159.01 ft Mean mixing ratio: 3.67 g/kg Conv temperature: 9.16 C = 48.49 F Cap Strength: 20.07 C Lifted Index: 22.05 C Risk: None Lifted Index @300 mb: 25.68 C Lifted Index @700 mb: 16.13 C Showalter Index: 11.38 C Risk: None Total Totals Index: 35.80 C Risk: None Vertical Totals Index: 17.90 C Cross Totals Index: 17.90 C K Index: 18.90 Risk: < 20 % chance of thunderstorms Sweat Index: 268.70 Risk: None Energy Index: 3.62 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 25.81 J/kg Max Up Vert Vel: 7.18 m/s Conv Inhibition (B-): 63922.62 J/kg Cap Strength: 21.93 C Lift Cond Lev (LCL): 943.37 mb = 596.91 m = 1958.33 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 257 at 39 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 1005 98 0 0 -0.0 -0.0 | 77 39 -38.3 -8.9 1 1000 131 235 3 2.5 1.7 | 79 37 -35.8 -7.2 2 978 305 200 10 3.4 9.4 | 91 35 -34.9 0.5 3 942 610 190 17 3.0 16.7 | 103 36 -35.3 7.8 4 925 754 180 20 0.0 20.0 | 106 40 -38.3 11.1 5 907 914 175 25 -2.2 24.9 | 112 44 -40.5 16.0 6 873 1219 185 31 2.7 30.9 | 122 42 -35.6 22.0 7 850 1429 200 45 15.4 42.3 | 146 40 -22.9 33.4 8 840 1524 200 48 16.4 45.1 | 149 42 -21.9 36.2 9 809 1829 220 51 32.8 39.1 | 170 31 -5.5 30.2 10 779 2134 230 56 42.9 36.0 | 190 27 4.6 27.1 11 750 2438 230 60 46.0 38.6 | 195 31 7.7 29.7 12 722 2743 225 61 43.1 43.1 | 188 35 4.8 34.2 13 700 2992 225 60 42.4 42.4 | 187 34 4.1 33.5 14 695 3048 230 59 45.2 37.9 | 193 30 6.9 29.0 15 642 3658 230 61 46.7 39.2 | 196 31 8.4 30.3 16 594 4267 235 60 49.1 34.4 | 203 28 10.9 25.5 17 549 4877 235 64 52.4 36.7 | 207 31 14.1 27.8 18 500 5600 235 70 57.3 40.2 | 211 37 19.1 31.2 19 467 6096 235 71 58.2 40.7 | 212 38 19.9 31.8 20 448 6401 235 69 56.5 39.6 | 211 36 18.2 30.7 21 400 7230 245 85 77.0 35.9 | 235 47 38.7 27.0 22 378 7620 245 86 77.9 36.3 | 235 48 39.7 27.4 23 317 8839 245 97 87.9 41.0 | 237 59 49.6 32.1 24 304 9144 250 110 103.4 37.6 | 246 71 65.1 28.7 25 300 9230 250 119 111.8 40.7 | 247 80 73.5 31.8 26 277 9754 245 140 126.9 59.2 | 240 102 88.6 50.3 27 250 10430 240 139 120.4 69.5 | 234 102 82.1 60.6 28 241 10668 240 140 121.2 70.0 | 234 103 83.0 61.1 29 200 11830 250 155 145.7 53.0 | 248 116 107.4 44.1 30 188 12208 255 157 151.7 40.6 | 254 118 113.4 31.7 31 182 12405 255 160 154.5 41.4 | 254 121 116.3 32.5 32 179 12497 255 160 154.5 41.4 | 254 121 116.3 32.5 33 150 13580 265 123 122.5 10.7 | 269 84 84.2 1.8 34 115 15240 265 78 77.7 6.8 | 273 39 39.4 -2.1 35 100 16080 250 59 55.4 20.2 | 237 21 17.2 11.3 36 99 16154 255 53 51.2 13.7 | 250 14 12.9 4.8 37 94 16459 250 59 55.4 20.2 | 237 21 17.2 11.3 38 90 16764 255 74 71.5 19.2 | 253 35 33.2 10.3 39 81 17374 280 60 59.1 -10.4 | 313 28 20.8 -19.3 40 77 17678 275 49 48.8 -4.3 | 321 17 10.5 -13.2 41 70 18280 260 47 46.3 8.2 | 275 8 8.0 -0.7 42 70 18288 260 49 48.3 8.5 | 272 10 10.0 -0.4 43 67 18593 255 50 48.3 12.9 | 248 11 10.0 4.0 44 63 18898 275 54 53.8 -4.7 | 311 21 15.5 -13.6 45 57 19507 285 38 36.7 -9.8 | 5 19 -1.6 -18.7 46 52 20117 270 18 18.0 -0.0 | 66 22 -20.3 -8.9 47 50 20370 275 17 16.9 -1.5 | 64 24 -21.4 -10.4 48 50 20422 285 20 19.3 -5.2 | 53 24 -19.0 -14.1 49 47 20726 270 18 18.0 -0.0 | 66 22 -20.3 -8.9 50 45 21031 315 13 9.2 -9.2 | 58 34 -29.1 -18.1 51 43 21336 280 12 11.8 -2.1 | 67 29 -26.5 -11.0 52 41 21641 315 14 9.9 -9.9 | 56 34 -28.4 -18.8 53 39 21946 275 10 10.0 -0.9 | 71 30 -28.3 -9.8 54 37 22250 305 21 17.2 -12.0 | 45 30 -21.1 -20.9 55 35 22555 340 14 4.8 -13.2 | 57 40 -33.5 -22.1 56 34 22860 340 10 3.4 -9.4 | 62 39 -34.9 -18.3 57 32 23165 65 13 -11.8 -5.5 | 74 52 -50.1 -14.4 58 30 23470 80 12 -11.8 -2.1 | 78 51 -50.1 -11.0 59 30 23570 350 23 4.0 -22.7 | 47 47 -34.3 -31.6 60 29 23774 340 16 5.5 -15.0 | 54 41 -32.8 -23.9 61 28 24079 350 25 4.3 -24.6 | 45 48 -33.9 -33.5 62 26 24384 30 14 -7.0 -12.1 | 65 50 -45.3 -21.0 63 25 24689 315 10 7.1 -7.1 | 63 35 -31.2 -16.0 64 24 24994 340 12 4.1 -11.3 | 59 40 -34.2 -20.2 65 22 25603 5 24 -2.1 -23.9 | 51 52 -40.4 -32.8 66 21 25908 25 16 -6.8 -14.5 | 63 51 -45.1 -23.4 67 20 26110 10 16 -2.8 -15.8 | 59 48 -41.1 -24.7 68 20 26213 345 12 3.1 -11.6 | 60 41 -35.2 -20.5 69 19 26518 5 18 -1.6 -17.9 | 56 48 -39.9 -26.8 70 17 27127 325 3 1.7 -2.5 | 73 38 -36.6 -11.4 71 16 27432 355 13 1.1 -13.0 | 60 43 -37.2 -21.9 72 15 27737 345 19 4.9 -18.4 | 51 43 -33.4 -27.3 73 15 28042 310 18 13.8 -11.6 | 50 32 -24.5 -20.5 74 14 28346 340 11 3.8 -10.3 | 61 40 -34.5 -19.2 75 13 28651 25 17 -7.2 -15.4 | 62 52 -45.5 -24.3 76 12 29261 15 18 -4.7 -17.4 | 59 50 -42.9 -26.3 77 12 29566 335 12 5.1 -10.9 | 59 39 -33.2 -19.8 78 11 30175 25 26 -11.0 -23.6 | 57 59 -49.3 -32.5 79 10 30520 45 31 -21.9 -21.9 | 63 68 -60.2 -30.8 Wind Parameters Mean winds (0-6000m): 226.9 at 52.4 knts Storm direction: 256.9 at 39.3 knts Shear (0-3000m) pos: 7.2 neg: 5.7 tot: 13.0 10-3/s Storm rel Dir Shear (0-3000m): 116.7 deg Storm rel helicity (0-3000m) pos: 761.7 neg: -32.3 tot: 729.4 m^2/s^2 ave: 243.1 10^-3 m/s^2 rel: 0.76 Storm rel vorticity (0-3000m) horiz: 16.7 stream: 12.8 10^-3/s Energy-Hel index: 0.11 Bulk Rich Number: 0.10 Bulk Shear: 255.23 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 ------------------------------------------------------------------------------- 500 197 10 91 35| 0.0 17.2 17.2|145.9 0.0 145.9 291.8 0.87| 18.5 16.0 1000 185 16 101 38| 0.0 14.7 14.7|266.4 0.0 266.4 266.4 0.83| 16.6 13.7 1500 190 24 113 37| 8.7 9.8 18.5|546.6 0.0 546.6 364.4 0.89| 20.2 18.0 2000 202 31 126 33| 10.8 7.4 18.1|707.6 0.0 707.6 353.8 0.87| 21.0 18.3 2500 211 36 139 29| 8.6 6.8 15.5|733.2 -13.5 719.8 287.9 0.82| 18.3 15.0 3000 215 40 148 28| 7.2 5.7 13.0|761.7 -32.3 729.4 243.1 0.76| 16.7 12.8 4000 221 45 161 27| 5.7 4.4 10.1|792.5 -32.3 760.2 190.0 0.76| 13.2 10.1 5000 224 49 171 26| 4.8 3.8 8.6|823.2 -32.3 790.9 158.2 0.75| 11.3 8.4 6000 227 52 180 27| 4.0 3.5 7.5|843.2 -32.3 810.9 135.2 0.73| 9.9 7.2 Wrote GIF file: /home/apache/climate/data/raob//KIAD/skewt/KIAD.skewt.20251202.12.gif