UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025042912.upa.cvt Date: 1200Z 29 APR 25 Searching for U8661... Searching the city database file for: U8661 ... Date:1200Z 29 APR 25 Station: U8661 WMO ident: 28661 Latitude: 55.47 Longitude: 65.40 ------------------------------------------------------------------------------- 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 29 290 11 SFC 995 66 3.8 -2.2 65 6.0 1.4 290 11 277.3 277.9 274.8 286.4 3.26 2 500 4820 -43.1 -58.1 18 15.0 -43.5 345 231 280.5 280.5 271.5 280.6 0.03 3 402 6287 -45.1 -60.1 17 15.0 -45.4 321 192 296.0 296.0 279.6 296.1 0.03 4 400 6320 -45.1 -60.1 17 15.0 -45.4 321 191 296.4 296.4 279.8 296.5 0.03 5 307 8095 -43.3 -59.3 16 16.0 -43.9 292 144 322.2 322.2 289.5 322.4 0.04 6 300 8250 -43.3 -59.3 16 16.0 -43.9 290 140 324.3 324.3 290.1 324.5 0.04 7 266 9055 -44.1 -60.1 15 16.0 -44.7 277 119 334.5 334.5 293.0 334.7 0.04 8 252 9417 -44.5 -60.5 15 16.0 -45.1 271 109 339.1 339.1 294.1 339.3 0.04 9 250 9470 -42.9 -59.9 14 17.0 -43.6 270 108 342.3 342.3 294.9 342.5 0.05 10 234 9915 -44.3 -60.3 15 16.0 -45.0 269 89 346.7 346.7 296.0 346.9 0.05 11 226 10148 -43.9 -59.9 15 16.0 -44.6 268 79 350.8 350.8 296.8 351.0 0.05 12 200 10970 -43.5 -61.5 12 18.0 -44.3 265 44 363.9 363.9 299.5 364.1 0.05 13 164 12304 -44.1 -62.1 12 18.0 -45.0 255 50 384.1 384.1 302.9 384.4 0.05 14 153 12768 -45.9 -63.9 11 18.0 -46.7 251 51 388.8 388.8 303.6 389.0 0.05 15 150 12900 -45.5 -63.5 11 18.0 -46.4 250 52 391.7 391.7 304.0 391.9 0.05 16 132 13754 -44.5 -62.5 12 18.0 -45.6 248 46 408.0 408.0 306.3 408.4 0.06 17 122 14281 -45.1 -63.1 12 18.0 -46.2 247 42 416.2 416.2 307.3 416.6 0.06 18 111 14909 -46.9 -64.9 11 18.0 -47.9 246 38 424.3 424.3 308.2 424.5 0.06 19 100 15600 -47.3 -65.3 11 18.0 -48.4 245 33 436.3 436.4 309.6 436.7 0.06 20 96 15963 -51.1 -69.1 10 18.0 -51.9 240 33 434.0 434.0 309.3 434.2 0.04 21 87 16816 -51.9 -69.9 10 18.0 -52.7 237 30 444.8 444.8 310.4 445.0 0.04 22 73 18279 -54.5 -72.5 9 18.0 -55.2 231 24 462.2 462.2 312.0 462.4 0.03 23 70 18620 -53.7 -71.7 9 18.0 -54.5 230 23 469.5 469.5 312.6 469.7 0.03 24 52 20519 -56.7 -73.7 10 17.0 -57.5 239 11 504.2 504.2 315.2 504.4 0.03 25 50 20770 -53.5 -70.5 11 17.0 -54.6 240 9 517.4 517.4 316.2 517.8 0.06 26 41 22038 -56.9 -73.9 10 17.0 -57.8 236 7 539.1 539.2 317.5 539.4 0.04 27 35 23051 -52.9 -69.9 11 17.0 -54.4 233 5 574.5 574.6 319.4 575.2 0.09 28 30 24040 -55.7 -72.7 10 17.0 -57.1 230 3 592.8 592.8 320.3 593.3 0.07 29 29 24257 -56.5 -73.5 10 17.0 -57.8 243 3 596.4 596.4 320.5 596.8 0.06 30 22 26032 -54.1 -70.1 12 16.0 -56.1 352 6 652.5 652.6 322.8 653.7 0.14 31 20 26650 -51.7 -67.7 13 16.0 -54.3 30 7 677.9 678.0 323.7 679.7 0.21 32 15 28541 -45.7 -61.7 15 16.0 -50.5 756.0 756.3 326.3 762.0 0.63 33 13 29493 -46.7 -63.7 13 17.0 -51.8 784.1 784.4 327.0 789.6 0.56 TRP 96 15963 -51.1 -69.1 10 18.0 -51.9 240 33 434.0 434.0 309.3 434.2 0.04 WND 266 9055 -44.1 -60.1 15 16.0 -44.7 334.5 334.5 293.0 334.7 0.04 Sounding variables and indices 1000-500 mb thick: 4791.00 m Freezing level: 954.89 mb = 451.25 m = 1480.46 ft Wetbulb zero: 979.90 mb = 171.72 m = 563.38 ft Precipitable water: 0.34 inches Sfc-500 mean rel hum: 41.26 % Est. max temperature: 5.38 C = 41.68 F Sfc-Lift cond lev (LCL): 906.80 mb = 707.35 m = 2320.67 ft T: -2.53 C 700-500 lapse rate: 9.87 C/km Conv cond level (CCL): 842.00 mb = 1219.49 m = 4000.89 ft Mean mixing ratio: 2.57 g/kg Conv temperature: 5.41 C = 41.74 F Cap Strength: 0.90 C Lifted Index: -3.16 C Risk: Severe thunderstorms possible Lifted Index @300 mb: 27.84 C Lifted Index @700 mb: -1.20 C Showalter Index: -1.49 C Risk: Thunderstorms probable Total Totals Index: 64.27 C Risk: Severe Thunderstorms probable Vertical Totals Index: 36.17 C Cross Totals Index: 28.11 C K Index: 10.57 Risk: None Sweat Index: 659.12 Risk: Severe Thunderstorms possible Energy Index: -0.95 Risk: Scattered severe thunderstorms Parcel Indices Parcel: using 100 mb layer CAPE (B+): 260.81 J/kg Max Up Vert Vel: 22.84 m/s Conv Inhibition (B-): 15.09 J/kg Cap Strength: 0.90 C Lift Cond Lev (LCL): 855.57 mb = 1109.08 m = 3638.68 ft Lev Free Conv (LFC): 790.57 mb = 1654.94 m = 5429.54 ft Equ Level (EL): 470.57 mb = 5227.85 m = 17151.53 ft B at Equ Level: 259.97 J/kg Max Parcel Lev (MPL): 390.57 mb = 6480.03 m = 21259.68 ft Wind level data Storm motion: 48 at 130 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 ---------------------------------------------------------- 0 995 66 290 11 10.3 -3.8 | 232 136 107.7 82.7 1 925 619 85 126 -125.5 -11.0 | 160 81 -28.2 75.5 2 850 1206 80 143 -140.8 -24.8 | 145 75 -43.5 61.7 3 700 2540 40 167 -107.3 -127.9 | 14 43 -10.0 -41.4 4 500 4820 345 231 59.8 -223.1 | 311 208 157.1 -136.6 5 266 9055 6 250 9470 270 108 108.0 -0.0 | 247 223 205.3 86.5 7 200 10970 265 44 43.8 3.8 | 237 168 141.2 90.3 8 150 12900 250 52 48.9 17.8 | 234 180 146.2 104.3 9 100 15600 245 33 29.9 13.9 | 232 162 127.2 100.5 10 96 15963 240 33 28.6 16.5 | 231 163 125.9 103.0 11 70 18620 230 23 17.6 14.8 | 229 153 115.0 101.3 12 50 20770 240 9 7.8 4.5 | 229 139 105.1 91.0 13 30 24040 230 3 2.3 1.9 | 228 133 99.6 88.4 14 20 26650 30 7 -3.5 -6.1 | 229 124 93.8 80.4 Wind Parameters Mean winds (0-6000m): 18.4 at 173.6 knts Storm direction: 48.4 at 130.2 knts Shear (0-3000m) pos: 25.5 neg: 25.8 tot: 51.3 10-3/s Storm rel Dir Shear (0-3000m): 117.0 deg Storm rel helicity (0-3000m) pos: 1822.2 neg: -2616.0 tot: -793.8 m^2/s^2 ave: -264.6 10^-3 m/s^2 rel: -0.40 Storm rel vorticity (0-3000m) horiz: 68.1 stream: -27.6 10^-3/s Energy-Hel index: 2.97 Bulk Rich Number: 0.08 Bulk Shear: 3316.39 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 84 63 204 87| 127.2 0.0 127.2|1822.2-688.41133.8 2267.6 -0.09|198.5-17.8 1000 83 98 180 74| 76.5 0.0 76.5|1822.2-1125.5 696.7 696.7 -0.17|123.4-20.9 1500 80 114 167 68| 51.0 10.9 61.9|1822.2-1536.5 285.7 190.5 -0.23| 93.6-21.9 2000 74 124 157 57| 38.2 18.5 56.7|1822.2-1901.5 -79.3 -39.7 -0.31| 80.8-25.3 2500 67 132 144 42| 30.6 23.2 53.8|1822.2-2261.4-439.1 -175.7 -0.39| 73.6-28.4 3000 60 139 126 28| 25.5 25.8 51.3|1822.2-2616.0-793.8 -264.6 -0.40| 68.1-27.6 4000 45 153 25 25| 19.1 29.1 48.2|1822.2-4014.5-2192.3 -548.1 -0.43| 62.3 -26.7 5000 29 167 345 62| 15.3 29.2 44.5|1822.2-7035.5-5213.3 -1042.7 -0.47| 59.0 -27.6 6000 18 174 331 89| 12.7 24.7 37.4|1822.2-10722.5-8900.2 -1483.4 -0.52| 54.8 -28.5 Wrote GIF file: /home/apache/climate/data/raob//U8661/skewt/U8661.skewt.20250429.12.gif