UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025121000.upa.cvt Date: 0000Z 10 DEC 25 Searching for U4688... Searching the city database file for: U4688 ... Date:0000Z 10 DEC 25 Station: U4688 WMO ident: 24688 Latitude: 63.27 Longitude: 143.15 ------------------------------------------------------------------------------- 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 156 1 925 705 240 1 SFC 920 743 -35.1 -37.6 78 2.5 -35.2 240 1 243.8 243.8 243.4 244.2 0.16 3 873 1112 -31.1 -35.0 68 3.9 -31.3 174 8 251.6 251.7 250.6 252.3 0.22 4 850 1303 -27.7 -31.7 69 4.0 -28.0 140 11 257.1 257.2 255.5 258.0 0.32 5 814 1619 -21.5 -25.2 72 3.7 -22.0 156 11 266.9 267.0 263.7 268.6 0.61 6 767 2060 -20.1 -23.7 73 3.6 -20.7 177 11 273.0 273.1 268.1 275.1 0.74 7 700 2737 -22.1 -25.3 75 3.2 -22.6 210 11 278.0 278.1 271.2 280.1 0.70 8 655 3222 -25.1 -28.4 74 3.3 -25.5 203 15 280.0 280.1 272.1 281.7 0.56 9 500 5120 -40.5 -43.8 70 3.3 -40.6 175 33 283.7 283.7 273.6 284.2 0.16 10 400 6600 -51.5 -54.7 68 3.2 -51.5 180 48 288.1 288.1 275.7 288.3 0.06 11 335 7731 -60.5 -64.0 63 3.5 -60.5 175 48 290.7 290.7 277.0 290.8 0.02 12 300 8420 -60.5 -64.0 63 3.5 -60.5 170 46 300.1 300.1 281.4 300.1 0.02 13 250 9560 -58.5 -62.2 62 3.7 -58.6 170 33 319.1 319.1 288.5 319.2 0.04 14 243 9738 -58.5 -62.2 62 3.7 -58.6 170 33 321.7 321.7 289.3 321.8 0.04 15 215 10515 -53.1 -57.0 62 3.9 -53.2 170 34 341.5 341.6 294.8 341.9 0.08 16 200 10980 -53.1 -57.0 62 3.9 -53.2 170 35 348.7 348.7 296.4 349.0 0.09 17 150 12830 -51.3 -55.0 65 3.7 -51.5 175 38 381.7 381.7 302.6 382.4 0.15 18 100 15470 -51.3 -55.0 65 3.7 -51.6 190 38 428.6 428.7 308.8 429.7 0.22 19 74 17422 -54.3 -58.3 61 4.0 -54.6 198 43 460.8 460.9 312.0 462.0 0.20 20 70 17780 -53.1 -57.1 62 4.0 -53.5 200 44 470.8 470.9 312.8 472.2 0.24 21 50 19940 -53.7 -57.7 61 4.0 -54.1 195 60 516.9 517.0 316.2 518.9 0.32 22 40 21375 -51.9 -55.8 63 3.9 -52.5 197 67 555.5 555.7 318.6 558.9 0.50 23 38 21705 -53.9 -57.9 61 4.0 -54.5 198 68 558.6 558.8 318.7 561.4 0.40 24 30 23230 -50.7 -54.6 63 3.9 -51.5 200 75 606.4 606.7 321.2 612.1 0.77 25 29 23452 -50.1 -54.1 63 4.0 -51.0 201 77 614.0 614.3 321.5 620.3 0.84 26 22 25235 -56.1 -59.7 64 3.6 -56.8 208 92 646.6 646.8 322.7 651.0 0.56 27 20 25850 -50.1 -54.0 63 3.9 -51.3 210 97 682.8 683.3 324.2 693.1 1.24 28 19 26186 -48.9 -52.9 63 4.0 -50.3 696.6 697.3 324.7 709.2 1.49 29 16 27317 -48.0 -52.0 63 4.0 -49.6 210 101 734.7 735.6 326.0 752.2 1.97 30 13 28690 -46.9 -50.9 64 4.0 -48.8 783.4 784.7 327.5 809.6 2.75 TRP 335 7731 -60.5 -64.0 63 3.5 -60.5 175 48 290.7 290.7 277.0 290.8 0.02 WND 16 27317 -48.0 -52.0 63 4.0 -49.6 210 101 734.7 735.6 326.0 752.2 1.97 Sounding variables and indices 1000-500 mb thick: 4964.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.11 inches Sfc-500 mean rel hum: 72.55 % Est. max temperature: -6.98 C = 19.43 F Sfc-Lift cond lev (LCL): 881.34 mb = 1045.16 m = 3428.95 ft T: -31.83 C 700-500 lapse rate: 7.72 C/km ThetaE index: 0.00 C Layer 920.0- 0.0 mb Conv cond level (CCL): 920.00 mb = 742.85 m = 2437.15 ft Mean mixing ratio: 0.29 g/kg Conv temperature: -31.96 C = -25.52 F Cap Strength: 22.99 C Lifted Index: 24.14 C Risk: None Lifted Index @300 mb: 32.47 C Lifted Index @700 mb: 21.74 C Showalter Index: 21.06 C Risk: None Total Totals Index: 21.60 C Risk: None Vertical Totals Index: 12.80 C Cross Totals Index: 8.80 C K Index: -22.10 Risk: None Sweat Index: 55.00 Risk: None Energy Index: 5.74 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 84.45 J/kg Max Up Vert Vel: 13.00 m/s Conv Inhibition (B-): 71055.11 J/kg Cap Strength: 24.09 C Lift Cond Lev (LCL): 827.63 mb = 1497.85 m = 4914.15 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 209 at 18 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 ---------------------------------------------------------- 0 920 743 240 1 0.9 0.5 | 27 17 -7.7 -14.9 1 850 1303 140 11 -7.1 8.4 | 66 17 -15.7 -7.0 2 700 2737 210 11 5.5 9.5 | 28 7 -3.1 -5.9 3 500 5120 175 33 -2.9 32.9 | 147 21 -11.5 17.5 4 400 6600 180 48 0.0 48.0 | 165 34 -8.6 32.6 5 335 7731 175 48 -4.2 47.8 | 159 35 -12.8 32.4 6 300 8420 170 46 -8.0 45.3 | 151 34 -16.6 29.9 7 250 9560 170 33 -5.7 32.5 | 140 22 -14.3 17.1 8 200 10980 170 35 -6.1 34.5 | 142 24 -14.7 19.1 9 150 12830 175 38 -3.3 37.9 | 152 25 -11.9 22.5 10 100 15470 190 38 6.6 37.4 | 175 22 -2.0 22.0 11 70 17780 200 44 15.0 41.3 | 194 27 6.5 26.0 12 50 19940 195 60 15.5 58.0 | 189 43 6.9 42.6 13 30 23230 200 75 25.7 70.5 | 197 58 17.1 55.1 14 20 25850 210 97 48.5 84.0 | 210 79 39.9 68.6 Wind Parameters Mean winds (0-6000m): 179.2 at 23.5 knts Storm direction: 209.2 at 17.6 knts Shear (0-3000m) pos: 1.8 neg: 3.3 tot: 5.1 10-3/s Storm rel Dir Shear (0-3000m): 114.8 deg Storm rel helicity (0-3000m) pos: 39.6 neg: -12.4 tot: 27.2 m^2/s^2 ave: 9.1 10^-3 m/s^2 rel: 0.28 Storm rel vorticity (0-3000m) horiz: 6.5 stream: 1.8 10^-3/s Energy-Hel index: 0.02 Bulk Rich Number: 1.73 Bulk Shear: 48.82 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 ------------------------------------------------------------------------------- 500 145 5 47 16| 0.0 10.3 10.3| 28.2 -0.8 27.4 54.9 0.64| 13.0 8.3 1000 148 8 56 15| 1.1 5.1 6.3| 33.2 -0.8 32.4 32.4 0.51| 9.4 4.8 1500 158 9 60 14| 2.2 3.4 5.6| 33.2 -4.9 28.4 18.9 0.34| 7.9 2.7 2000 169 10 60 12| 2.7 2.6 5.2| 33.2 -12.4 20.9 10.4 0.14| 7.1 1.0 2500 179 10 60 10| 2.1 2.9 5.0| 36.2 -12.4 23.8 9.5 0.21| 6.7 1.4 3000 184 12 63 9| 1.8 3.3 5.1| 39.6 -12.4 27.2 9.1 0.28| 6.5 1.8 4000 183 15 86 8| 1.3 3.9 5.2| 41.6 -13.8 27.8 7.0 0.23| 6.3 1.5 5000 179 19 112 10| 1.3 3.7 5.0| 64.4 -17.6 46.8 9.4 0.24| 6.2 1.5 6000 179 23 132 12| 1.7 3.0 4.7|100.4 -20.8 79.6 13.3 0.27| 5.9 1.6 Wrote GIF file: /home/apache/climate/data/raob//U4688/skewt/U4688.skewt.20251210.00.gif