UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025122112.upa.cvt Date: 1200Z 21 DEC 25 Searching for U4641... Searching the city database file for: U4641 ... Date:1200Z 21 DEC 25 Station: U4641 WMO ident: 24641 Latitude: 63.77 Longitude: 121.62 ------------------------------------------------------------------------------- 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 114 -45.5 -49.7 63 4.2 -45.6 25 1 227.3 227.3 227.3 227.4 0.04 1 1000 147 -45.1 -51.1 51 6.0 -45.2 30 1 228.1 228.1 228.0 228.1 0.03 2 999 154 -44.9 -50.9 51 6.0 -45.0 31 1 228.3 228.3 228.2 228.4 0.04 3 998 160 -43.5 -49.5 51 6.0 -43.6 33 1 229.8 229.8 229.7 229.9 0.04 4 994 188 -41.1 -47.1 52 6.0 -41.2 38 1 232.4 232.5 232.3 232.6 0.06 5 947 522 -33.5 -39.5 55 6.0 -33.8 107 1 243.4 243.4 242.9 243.8 0.13 6 925 688 -30.5 -36.5 56 6.0 -30.9 140 1 248.1 248.1 247.4 248.6 0.18 7 922 711 -29.9 -35.9 56 6.0 -30.3 142 1 249.0 249.0 248.2 249.5 0.19 8 895 924 -27.7 -32.7 62 5.0 -28.1 163 2 253.4 253.4 252.2 254.1 0.27 9 850 1295 -27.3 -31.8 66 4.5 -27.7 200 3 257.5 257.6 255.8 258.4 0.31 10 821 1545 -27.7 -32.0 67 4.3 -28.0 209 4 259.7 259.7 257.6 260.6 0.32 11 700 2679 -32.5 -36.4 68 3.9 -32.8 250 7 266.5 266.5 262.6 267.2 0.24 12 620 3531 -36.1 -39.9 68 3.8 -36.3 279 6 271.8 271.8 266.3 272.4 0.19 13 500 5000 -45.1 -49.3 63 4.2 -45.2 330 3 278.1 278.1 270.1 278.3 0.09 14 406 6364 -53.5 -57.9 59 4.4 -53.6 349 7 284.2 284.3 273.6 284.4 0.04 15 400 6460 -53.9 -58.3 58 4.4 -53.9 350 7 284.9 284.9 274.0 285.1 0.04 16 330 7681 -58.5 -62.9 57 4.4 -58.6 320 9 294.7 294.7 279.0 294.8 0.02 17 315 7973 -58.7 -63.1 57 4.4 -58.7 305 8 298.4 298.4 280.7 298.5 0.03 18 300 8280 -57.7 -62.2 56 4.5 -57.8 290 7 304.0 304.0 283.0 304.1 0.03 19 250 9430 -56.3 -60.8 57 4.5 -56.4 275 7 322.4 322.4 289.5 322.5 0.04 20 216 10358 -54.5 -59.2 56 4.7 -54.6 252 8 338.9 338.9 294.1 339.2 0.06 21 200 10850 -54.1 -58.9 55 4.8 -54.2 240 9 347.1 347.1 296.1 347.4 0.07 22 175 11707 -53.5 -58.5 54 5.0 -53.7 231 10 361.6 361.6 299.1 362.0 0.08 23 150 12700 -52.5 -58.5 48 6.0 -52.8 220 11 379.6 379.6 302.2 380.1 0.10 24 100 15330 -51.3 -61.3 29 10.0 -51.9 220 27 428.6 428.6 308.7 429.1 0.10 25 70 17650 -52.1 -67.1 15 15.0 -53.0 210 38 472.9 472.9 312.9 473.3 0.07 26 65 18131 -51.7 -67.7 13 16.0 -52.7 209 39 483.9 483.9 313.8 484.3 0.07 27 59 18760 -52.3 -69.3 11 17.0 -53.4 207 41 496.2 496.2 314.7 496.5 0.06 28 50 19840 -49.5 -68.5 9 19.0 -51.1 205 44 526.8 526.8 316.8 527.3 0.08 29 49 19973 -49.1 -68.1 9 19.0 -50.8 205 44 530.8 530.8 317.0 531.4 0.08 30 44 20676 -51.9 -70.9 8 19.0 -53.4 206 43 540.6 540.6 317.6 541.0 0.06 31 34 22365 -48.1 -70.1 6 22.0 -50.7 209 41 591.9 592.0 320.3 592.6 0.09 32 32 22768 -44.9 -67.9 6 23.0 -48.5 209 41 610.9 610.9 321.2 611.8 0.13 33 30 23200 -45.5 -68.5 6 23.0 -49.1 210 40 620.6 620.6 321.6 621.6 0.13 34 23 24961 -48.1 -73.1 4 25.0 -51.7 207 50 661.9 662.0 323.2 662.6 0.08 35 20 25890 -43.9 -69.9 4 26.0 -49.3 205 56 701.8 701.9 324.6 703.2 0.16 36 12 29335 -41.9 -68.9 4 27.0 -50.0 819.3 819.4 327.8 822.3 0.30 TRP 330 7681 -58.5 -62.9 57 4.4 -58.6 320 9 294.7 294.7 279.0 294.8 0.02 WND Sounding variables and indices 1000-500 mb thick: 4853.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.05 inches Sfc-500 mean rel hum: 64.54 % Est. max temperature: -15.72 C = 3.71 F Sfc-Lift cond lev (LCL): 931.83 mb = 636.05 m = 2086.76 ft T: -31.44 C 700-500 lapse rate: 5.43 C/km ThetaE index: 0.00 C Layer 1005.0-36310270083072.0 mb Conv cond level (CCL): 1000.00 mb = 147.00 m = 482.28 ft Mean mixing ratio: 0.13 g/kg Conv temperature: -38.93 C = -38.07 F Cap Strength: 26.34 C Lifted Index: 29.88 C Risk: None Lifted Index @300 mb: 44.17 C Lifted Index @700 mb: 22.50 C Showalter Index: 16.14 C Risk: None Total Totals Index: 31.10 C Risk: None Vertical Totals Index: 17.80 C Cross Totals Index: 13.30 C K Index: -17.90 Risk: None Sweat Index: 9.00 Risk: None Energy Index: 4.24 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 85.35 J/kg Max Up Vert Vel: 13.07 m/s Conv Inhibition (B-): 72883.40 J/kg Cap Strength: 29.87 C Lift Cond Lev (LCL): 880.58 mb = 1040.72 m = 3414.38 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 302 at 3 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 114 25 1 -0.4 -0.9 | 104 3 -3.1 0.8 1 1000 147 30 1 -0.5 -0.9 | 104 3 -3.2 0.8 2 925 688 140 1 -0.6 0.8 | 126 4 -3.3 2.5 3 850 1295 200 3 1.0 2.8 | 160 5 -1.7 4.5 4 700 2679 250 7 6.6 2.4 | 224 6 3.9 4.1 5 500 5000 330 3 1.5 -2.6 | 52 1 -1.2 -0.9 6 400 6460 350 7 1.2 -6.9 | 16 5 -1.5 -5.2 7 330 7681 320 9 5.8 -6.9 | 329 6 3.1 -5.2 8 300 8280 290 7 6.6 -2.4 | 280 4 3.9 -0.7 9 250 9430 275 7 7.0 -0.6 | 256 4 4.3 1.1 10 200 10850 240 9 7.8 4.5 | 220 8 5.1 6.2 11 150 12700 220 11 7.1 8.4 | 203 11 4.4 10.1 12 100 15330 220 27 17.4 20.7 | 213 27 14.7 22.4 13 70 17650 210 38 19.0 32.9 | 205 38 16.3 34.6 14 50 19840 205 44 18.6 39.9 | 201 45 15.9 41.6 15 30 23200 210 40 20.0 34.6 | 205 40 17.3 36.3 16 20 25890 205 56 23.7 50.8 | 202 56 21.0 52.4 Wind Parameters Mean winds (0-6000m): 272.1 at 4.2 knts Storm direction: 302.1 at 3.2 knts Shear (0-3000m) pos: 1.2 neg: 0.0 tot: 1.2 10-3/s Storm rel Dir Shear (0-3000m): 133.7 deg Storm rel helicity (0-3000m) pos: 14.8 neg: 0.0 tot: 14.8 m^2/s^2 ave: 4.9 10^-3 m/s^2 rel: 0.90 Storm rel vorticity (0-3000m) horiz: 2.2 stream: 1.9 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 23.98 Bulk Shear: 3.56 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 73 1 111 4| 1.6 0.0 1.6| 1.3 0.0 1.3 2.7 0.74| 1.8 1.3 1000 143 1 128 4| 1.7 0.0 1.7| 3.7 0.0 3.7 3.7 0.84| 2.0 1.7 1500 187 2 145 4| 1.7 0.0 1.7| 6.5 0.0 6.5 4.3 0.89| 2.1 1.9 2000 207 3 159 4| 1.6 0.0 1.6| 9.3 0.0 9.3 4.6 0.92| 2.1 1.9 2500 225 3 175 4| 1.6 0.0 1.6| 12.8 0.0 12.8 5.1 0.94| 2.2 2.0 3000 235 4 187 4| 1.2 0.0 1.2| 14.8 0.0 14.8 4.9 0.90| 2.2 1.9 4000 249 4 201 3| 0.6 0.0 0.6| 16.5 0.0 16.5 4.1 0.84| 2.1 1.8 5000 255 4 205 3| 0.3 0.0 0.3| 17.1 -0.1 17.0 3.4 0.82| 2.0 1.6 6000 272 4 225 2| 0.5 0.0 0.5| 17.1 -0.8 16.3 2.7 0.66| 1.9 1.3 Wrote GIF file: /home/apache/climate/data/raob//U4641/skewt/U4641.skewt.20251221.12.gif