UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025120600.upa.cvt Date: 0000Z 6 DEC 25 Searching for KIAD... Searching the city database file for: KIAD ... Date:0000Z 6 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 1007 98 -3.3 -5.5 85 2.2 -4.0 80 4 269.3 269.7 268.7 276.1 2.51 1 1005 111 -1.5 -3.5 86 2.0 -2.2 77 4 271.3 271.7 270.7 279.2 2.93 2 1000 145 -1.9 -3.8 87 1.9 -2.6 70 3 271.2 271.7 270.6 279.1 2.88 3 973 362 -3.9 -4.0 99 0.1 -4.0 65 4 271.4 271.8 270.7 279.3 2.92 4 954 517 -4.7 -4.7 100 0.0 -4.7 134 6 272.1 272.6 271.0 279.8 2.82 5 930 719 -1.7 -1.7 100 0.0 -1.7 189 11 277.1 277.8 275.2 287.1 3.63 6 925 762 -1.9 -2.0 99 0.1 -1.9 195 12 277.4 278.0 275.2 287.2 3.56 7 903 953 -2.1 -2.1 100 0.0 -2.1 209 14 279.1 279.7 276.2 289.1 3.63 8 850 1433 -3.7 -3.8 99 0.1 -3.7 255 17 282.3 282.9 277.6 291.8 3.39 9 832 1602 -4.3 -4.3 100 0.0 -4.3 269 13 283.4 283.9 278.0 292.8 3.34 10 821 1707 -3.9 -4.2 98 0.3 -4.0 267 16 284.9 285.5 278.9 294.6 3.41 11 811 1804 -2.5 -4.4 87 1.9 -3.3 265 19 287.4 288.0 280.1 297.2 3.40 12 806 1853 -2.7 -4.4 88 1.7 -3.4 264 20 287.7 288.3 280.3 297.5 3.42 13 761 2306 -5.9 -5.9 100 0.0 -5.9 253 22 289.0 289.5 280.6 298.4 3.23 14 758 2337 -4.3 -6.3 86 2.0 -5.1 253 22 291.0 291.6 281.4 300.3 3.15 15 755 2368 -4.5 -6.2 88 1.7 -5.1 254 22 291.1 291.7 281.5 300.5 3.18 16 739 2536 -5.3 -8.1 81 2.8 -6.3 260 24 292.1 292.6 281.5 300.4 2.81 17 731 2622 -6.1 -12.1 62 6.0 -8.1 264 25 292.1 292.5 280.6 298.3 2.07 18 727 2665 -5.5 -11.5 63 6.0 -7.5 266 25 293.2 293.6 281.3 299.8 2.18 19 721 2730 -5.9 -11.9 63 6.0 -7.9 269 26 293.5 293.8 281.3 299.9 2.13 20 712 2828 -5.7 -16.7 42 11.0 -8.9 270 27 294.7 295.0 281.0 299.2 1.45 21 700 2961 -6.7 -19.7 35 13.0 -10.2 270 29 295.1 295.3 280.7 298.7 1.14 22 685 3130 -6.9 -21.9 29 15.0 -10.8 269 29 296.7 296.9 281.2 299.8 0.97 23 683 3153 -7.1 -21.1 32 14.0 -10.8 269 30 296.7 296.9 281.3 300.0 1.04 24 667 3337 -8.3 -19.3 41 11.0 -11.3 268 33 297.4 297.6 281.9 301.3 1.24 25 662 3395 -8.9 -21.9 34 13.0 -12.2 267 34 297.3 297.5 281.5 300.5 1.00 26 660 3418 -8.7 -26.7 22 18.0 -12.7 267 35 297.8 297.9 281.3 299.9 0.65 27 638 3680 -10.7 -26.7 26 16.0 -14.2 265 39 298.4 298.6 281.6 300.6 0.67 28 629 3789 -11.5 -29.5 21 18.0 -15.0 261 43 298.7 298.8 281.5 300.5 0.53 29 607 4061 -11.9 -37.9 10 26.0 -16.0 258 50 301.3 301.4 282.3 302.2 0.24 30 572 4512 -15.7 -40.7 10 25.0 -19.1 267 58 302.0 302.1 282.5 302.7 0.19 31 560 4672 -13.9 -45.9 5 32.0 -18.0 268 61 306.0 306.0 284.0 306.4 0.11 32 538 4975 -16.5 -35.5 18 19.0 -19.6 270 67 306.4 306.5 284.4 307.6 0.35 33 511 5359 -19.7 -35.7 23 16.0 -22.1 270 71 307.1 307.2 284.7 308.3 0.36 34 510 5373 -19.9 -35.9 23 16.0 -22.2 270 71 307.0 307.1 284.7 308.3 0.35 35 500 5520 -20.7 -36.7 22 16.0 -22.9 270 73 307.8 307.9 284.9 309.0 0.33 36 490 5669 -21.3 -39.3 18 18.0 -23.7 271 75 308.8 308.9 285.2 309.8 0.26 37 466 6038 -22.3 -46.3 9 24.0 -24.8 274 78 312.1 312.1 286.2 312.5 0.13 38 465 6054 -22.1 -44.1 12 22.0 -24.6 275 78 312.5 312.5 286.4 313.1 0.16 39 433 6573 -26.7 -46.7 13 20.0 -28.5 272 80 313.1 313.1 286.6 313.6 0.13 40 400 7140 -30.7 -46.7 19 16.0 -32.0 265 94 315.1 315.1 287.3 315.6 0.14 41 370 7690 -34.5 -50.5 18 16.0 -35.5 260 109 317.1 317.2 287.9 317.5 0.10 42 368 7728 -34.5 -50.5 18 16.0 -35.5 260 110 317.6 317.7 288.1 318.0 0.10 43 364 7804 -34.7 -48.7 23 14.0 -35.7 260 114 318.4 318.4 288.3 318.8 0.13 44 358 7920 -35.3 -53.3 14 18.0 -36.4 260 119 319.1 319.1 288.5 319.4 0.08 45 345 8177 -36.3 -47.3 31 11.0 -37.1 260 130 321.1 321.1 289.3 321.7 0.16 46 323 8630 -40.7 -45.7 59 5.0 -41.1 260 137 321.1 321.2 289.3 321.9 0.20 47 314 8823 -41.7 -49.7 42 8.0 -42.1 260 139 322.4 322.4 289.6 322.9 0.13 48 300 9130 -44.5 -51.5 46 7.0 -44.8 260 143 322.6 322.7 289.7 323.1 0.11 49 298 9175 -44.9 -51.9 45 7.0 -45.2 260 142 322.7 322.7 289.7 323.1 0.11 50 286 9448 -46.1 -56.1 31 10.0 -46.4 260 145 324.8 324.8 290.3 325.1 0.07 51 283 9517 -46.7 -55.7 35 9.0 -47.0 260 146 324.9 324.9 290.3 325.2 0.07 52 277 9659 -47.7 -56.7 35 9.0 -48.0 259 148 325.5 325.5 290.5 325.7 0.06 53 276 9683 -47.7 -57.7 31 10.0 -48.0 259 149 325.8 325.8 290.6 326.0 0.06 54 275 9706 -47.7 -58.7 27 11.0 -48.0 258 149 326.1 326.1 290.7 326.3 0.05 55 257 10150 -49.7 -61.7 23 12.0 -50.0 255 157 329.6 329.6 291.6 329.7 0.04 56 254 10226 -49.7 -63.7 18 14.0 -50.0 255 158 330.7 330.7 291.9 330.8 0.03 57 251 10304 -49.7 -65.7 14 16.0 -50.1 255 157 331.8 331.8 292.2 331.9 0.02 58 250 10330 -50.1 -66.1 14 16.0 -50.4 255 156 331.6 331.6 292.2 331.7 0.02 59 200 11770 -54.9 -78.9 4 24.0 -55.2 260 130 345.8 345.8 295.7 345.8 0.00 60 199 11802 -55.1 -79.1 4 24.0 -55.4 260 130 346.0 346.0 295.7 346.0 0.00 61 150 13610 -57.1 -84.1 2 27.0 -57.4 270 95 371.7 371.7 300.9 371.7 0.00 62 100 16150 -62.7 -86.7 3 24.0 -62.9 275 64 406.6 406.6 306.1 406.6 0.00 63 89 16869 -61.9 -86.9 2 25.0 -62.1 282 57 422.0 422.0 307.9 422.0 0.00 64 75 17913 -67.1 -88.1 4 21.0 -67.2 271 41 432.2 432.2 309.1 432.2 0.00 65 73 18076 -66.5 -88.5 3 22.0 -66.7 269 42 436.8 436.8 309.6 436.9 0.00 66 70 18330 -66.7 -88.7 3 22.0 -66.9 270 47 441.7 441.7 310.0 441.7 0.00 67 62 19063 -68.1 -89.1 3 21.0 -68.2 276 49 454.2 454.2 311.3 454.2 0.00 68 58 19467 -66.5 -90.5 2 24.0 -66.7 278 46 466.5 466.5 312.4 466.6 0.00 69 56 19681 -64.3 -90.3 2 26.0 -64.6 279 44 476.3 476.3 313.1 476.3 0.00 70 56 19681 -62.1 -89.1 2 27.0 -62.5 279 44 481.3 481.3 313.5 481.3 0.00 71 55 19792 -61.9 -88.9 2 27.0 -62.3 280 43 484.2 484.2 313.8 484.2 0.00 72 55 19792 -61.9 -88.9 2 27.0 -62.3 280 43 484.2 484.2 313.8 484.2 0.00 73 50 20380 -64.3 -89.3 2 25.0 -64.6 265 40 492.0 492.0 314.4 492.0 0.00 74 42 21453 -61.7 -88.7 2 27.0 -62.3 291 36 523.6 523.6 316.5 523.6 0.00 75 41 21602 -61.9 -88.9 2 27.0 -62.4 292 29 526.7 526.7 316.7 526.7 0.00 TRP 199 11802 -55.1 -79.1 4 24.0 -55.4 260 130 346.0 346.0 295.7 346.0 0.00 WND 254 10226 -49.7 -63.7 18 14.0 -50.0 255 158 330.7 330.7 291.9 330.8 0.03 Sounding variables and indices 1000-500 mb thick: 5375.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.43 inches Sfc-500 mean rel hum: 55.70 % Est. max temperature: 9.25 C = 48.65 F Sfc-Lift cond lev (LCL): 972.60 mb = 365.17 m = 1198.04 ft T: -3.92 C 700-500 lapse rate: 5.47 C/km ThetaE index: 2.19 C Layer 739.0- 727.0 mb Conv cond level (CCL): 986.92 mb = 249.33 m = 818.01 ft Mean mixing ratio: 3.14 g/kg Conv temperature: -1.30 C = 29.65 F Cap Strength: 21.06 C Lifted Index: 21.41 C Risk: None Lifted Index @300 mb: 28.61 C Lifted Index @700 mb: 14.26 C Showalter Index: 14.14 C Risk: None Total Totals Index: 33.90 C Risk: None Vertical Totals Index: 17.00 C Cross Totals Index: 16.90 C K Index: 0.20 Risk: None Sweat Index: 107.00 Risk: None Energy Index: 3.62 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 36.62 J/kg Max Up Vert Vel: 8.56 m/s Conv Inhibition (B-): 35141.53 J/kg Cap Strength: 21.41 C Lift Cond Lev (LCL): 950.03 mb = 550.39 m = 1805.72 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 295 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 1007 98 80 4 -3.9 -0.7 | 111 32 -29.6 11.3 1 1000 145 70 3 -2.8 -1.0 | 111 30 -28.5 11.0 2 980 305 40 3 -1.9 -2.3 | 109 29 -27.6 9.7 3 943 610 175 8 -0.7 8.0 | 127 33 -26.3 20.0 4 925 762 195 12 3.1 11.6 | 136 33 -22.5 23.6 5 907 914 205 13 5.5 11.8 | 140 31 -20.1 23.8 6 873 1219 235 19 15.6 10.9 | 156 25 -10.1 22.9 7 850 1433 255 17 16.4 4.4 | 151 19 -9.2 16.4 8 840 1524 270 11 11.0 -0.0 | 129 19 -14.6 12.0 9 808 1829 265 20 19.9 1.7 | 157 15 -5.7 13.7 10 778 2134 250 20 18.8 6.8 | 160 20 -6.8 18.8 11 748 2438 255 23 22.2 6.0 | 169 18 -3.4 18.0 12 720 2743 270 26 26.0 -0.0 | 182 12 0.4 12.0 13 700 2961 270 29 29.0 -0.0 | 196 12 3.4 12.0 14 692 3048 270 28 28.0 -0.0 | 191 12 2.4 12.0 15 639 3658 265 39 38.9 3.4 | 221 20 13.2 15.4 16 614 3962 255 49 47.3 12.7 | 221 33 21.7 24.7 17 590 4267 265 53 52.8 4.6 | 239 32 27.2 16.6 18 544 4877 270 66 66.0 -0.0 | 253 42 40.4 12.0 19 500 5520 270 73 73.0 -0.0 | 256 49 47.4 12.0 20 462 6096 275 79 78.7 -6.9 | 264 53 53.1 5.1 21 443 6401 275 81 80.7 -7.1 | 265 55 55.1 4.9 22 425 6706 270 80 80.0 -0.0 | 258 56 54.4 12.0 23 400 7140 265 94 93.6 8.2 | 253 71 68.0 20.2 24 373 7620 260 106 104.4 18.4 | 249 84 78.8 30.4 25 342 8230 260 133 131.0 23.1 | 252 111 105.3 35.1 26 300 9130 260 143 140.8 24.8 | 252 121 115.2 36.8 27 299 9144 260 142 139.8 24.7 | 252 120 114.2 36.7 28 286 9449 260 145 142.8 25.2 | 252 123 117.2 37.2 29 254 10226 255 158 152.6 40.9 | 247 138 127.0 52.9 30 250 10330 255 156 150.7 40.4 | 247 136 125.1 52.4 31 249 10363 255 158 152.6 40.9 | 247 138 127.0 52.9 32 200 11770 260 130 128.0 22.6 | 251 108 102.4 34.6 33 199 11802 260 130 128.0 22.6 | 251 108 102.4 34.6 34 150 13610 270 95 95.0 -0.0 | 260 70 69.4 12.0 35 140 14021 270 93 93.0 -0.0 | 260 68 67.4 12.0 36 127 14630 265 72 71.7 6.3 | 248 50 46.1 18.3 37 121 14935 270 82 82.0 -0.0 | 258 58 56.4 12.0 38 116 15240 270 76 76.0 -0.0 | 257 52 50.4 12.0 39 100 16150 275 64 63.8 -5.6 | 260 39 38.1 6.4 40 95 16459 275 64 63.8 -5.6 | 260 39 38.1 6.4 41 82 17374 290 48 45.1 -16.4 | 283 20 19.5 -4.4 42 78 17678 275 39 38.9 -3.4 | 237 16 13.2 8.6 43 70 18288 265 44 43.8 3.8 | 229 24 18.2 15.8 44 70 18330 270 47 47.0 -0.0 | 241 25 21.4 12.0 45 64 18898 275 50 49.8 -4.4 | 252 25 24.2 7.6 46 55 19812 280 43 42.3 -7.5 | 255 17 16.7 4.5 47 52 20117 300 39 33.8 -19.5 | 313 11 8.1 -7.5 48 50 20380 265 40 39.8 3.5 | 223 21 14.2 15.5 49 49 20422 265 32 31.9 2.8 | 203 16 6.2 14.8 50 46 20726 260 38 37.4 6.6 | 212 22 11.8 18.6 51 43 21031 290 40 37.6 -13.7 | 278 12 12.0 -1.7 52 39 21336 295 17 15.4 -7.2 | 115 11 -10.2 4.8 53 34 21946 255 25 24.1 6.5 | 175 19 -1.5 18.5 Wind Parameters Mean winds (0-6000m): 265.1 at 37.7 knts Storm direction: 295.1 at 28.3 knts Shear (0-3000m) pos: 4.7 neg: 1.4 tot: 6.1 10-3/s Storm rel Dir Shear (0-3000m): 84.1 deg Storm rel helicity (0-3000m) pos: 279.6 neg: -41.2 tot: 238.4 m^2/s^2 ave: 79.5 10^-3 m/s^2 rel: 0.48 Storm rel vorticity (0-3000m) horiz: 12.0 stream: 5.8 10^-3/s Energy-Hel index: 0.06 Bulk Rich Number: 0.16 Bulk Shear: 229.69 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 ------------------------------------------------------------------------------- 500 114 4 115 33| 9.0 0.0 9.0| 85.7 -6.2 79.5 159.1 0.58| 15.7 9.2 1000 193 8 130 31| 10.3 0.0 10.3|192.5 -6.2 186.3 186.3 0.74| 15.2 11.2 1500 223 11 138 27| 5.9 0.0 5.9|211.7 -41.2 170.5 113.7 0.38| 15.8 6.0 2000 239 13 142 24| 4.4 2.1 6.6|241.8 -41.2 200.6 100.3 0.43| 14.7 6.3 2500 245 15 146 22| 4.7 1.7 6.4|264.9 -41.2 223.7 89.5 0.46| 13.2 6.1 3000 252 17 151 20| 4.7 1.4 6.1|279.6 -41.2 238.4 79.5 0.48| 12.0 5.8 4000 257 23 168 17| 3.5 4.0 7.5|345.1 -42.0 303.1 75.8 0.47| 12.4 5.8 5000 262 30 194 17| 4.9 3.2 8.1|492.1 -42.0 450.1 90.0 0.51| 12.1 6.3 6000 265 38 218 19| 5.1 2.6 7.8|611.5 -42.0 569.5 94.9 0.53| 11.3 6.0 Wrote GIF file: /home/apache/climate/data/raob//KIAD/skewt/KIAD.skewt.20251206.00.gif