UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2026011712.upa.cvt Date: 1200Z 17 JAN 26 Searching for U4688... Searching the city database file for: U4688 ... Date:1200Z 17 JAN 26 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 326 SFC 943 737 -35.9 -38.5 77 2.6 -36.0 260 1 241.3 241.3 241.0 241.7 0.15 2 930 834 -33.9 -37.5 70 3.6 -34.1 271 1 244.3 244.3 243.8 244.7 0.16 3 925 872 -33.9 -37.5 70 3.6 -34.1 275 1 244.6 244.7 244.2 245.1 0.16 4 897 1087 -32.9 -36.5 70 3.6 -33.1 293 2 247.8 247.9 247.2 248.4 0.19 5 850 1469 -25.9 -29.3 73 3.4 -26.2 325 3 259.0 259.1 257.2 260.1 0.40 6 764 2268 -12.5 -15.8 76 3.3 -13.3 267 11 281.5 281.8 274.5 285.8 1.46 7 713 2798 -12.7 -15.8 78 3.1 -13.5 230 16 286.9 287.2 277.4 291.6 1.56 8 700 2939 -14.1 -17.3 77 3.2 -14.9 220 17 286.9 287.1 277.2 291.1 1.40 9 619 3851 -22.5 -25.6 76 3.1 -23.0 222 16 287.5 287.6 276.6 289.9 0.77 10 532 4942 -28.7 -32.0 73 3.3 -29.1 224 15 292.8 292.9 278.8 294.4 0.49 11 500 5380 -32.5 -35.6 74 3.1 -32.8 225 15 293.4 293.5 278.9 294.6 0.37 12 400 6920 -46.1 -49.2 71 3.1 -46.2 205 25 295.1 295.1 279.3 295.5 0.11 13 369 7447 -50.7 -53.9 69 3.2 -50.8 197 24 295.8 295.9 279.6 296.1 0.07 14 300 8760 -59.3 -62.6 65 3.3 -59.3 175 23 301.8 301.8 282.1 301.9 0.03 15 250 9890 -66.9 -69.9 66 3.0 -66.9 190 23 306.6 306.6 284.1 306.7 0.01 16 247 9963 -67.5 -70.6 64 3.1 -67.5 190 23 306.8 306.8 284.1 306.8 0.01 17 232 10339 -68.7 -72.1 61 3.4 -68.7 190 23 310.5 310.5 285.5 310.5 0.01 18 218 10713 -67.9 -71.2 63 3.3 -67.9 192 18 317.3 317.3 287.9 317.4 0.01 19 202 11178 -61.3 -64.6 65 3.3 -61.3 195 12 334.7 334.7 293.0 334.9 0.03 20 200 11240 -61.1 -64.4 65 3.3 -61.2 195 11 336.0 336.0 293.3 336.1 0.03 21 150 13060 -54.7 -58.3 64 3.6 -54.8 185 15 375.8 375.9 301.6 376.3 0.10 22 123 14344 -49.1 -52.8 65 3.7 -49.4 197 21 408.0 408.0 306.4 409.1 0.23 23 112 14956 -50.3 -53.9 66 3.6 -50.6 203 24 416.8 416.9 307.4 417.9 0.22 24 100 15700 -47.3 -50.9 66 3.6 -47.7 210 27 436.3 436.4 309.7 438.2 0.36 25 70 18050 -48.7 -52.5 65 3.8 -49.2 210 29 480.2 480.3 313.7 482.6 0.42 26 50 20240 -51.3 -54.8 66 3.5 -51.8 220 31 522.6 522.7 316.6 525.4 0.45 27 48 20505 -52.5 -56.1 65 3.6 -52.9 218 32 525.9 526.0 316.8 528.4 0.40 28 42 21373 -50.9 -54.5 65 3.6 -51.5 211 33 550.3 550.5 318.3 554.0 0.55 29 36 22371 -54.1 -57.9 63 3.8 -54.6 204 36 566.8 567.0 319.2 569.8 0.43 30 30 23550 -51.5 -55.0 66 3.5 -52.2 195 38 604.2 604.5 321.0 609.6 0.73 31 22 25564 -50.7 -54.4 65 3.7 -51.7 191 44 662.7 663.1 323.4 671.3 1.07 32 20 26180 -53.7 -57.5 63 3.8 -54.6 190 46 671.8 672.1 323.7 678.5 0.81 33 19 26509 -54.7 -58.5 63 3.8 -55.6 678.6 678.9 323.9 684.9 0.75 TRP 232 10339 -68.7 -72.1 61 3.4 -68.7 190 23 310.5 310.5 285.5 310.5 0.01 WND Sounding variables and indices 1000-500 mb thick: 5054.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.18 inches Sfc-500 mean rel hum: 74.57 % Est. max temperature: -4.18 C = 24.48 F Sfc-Lift cond lev (LCL): 901.71 mb = 1050.13 m = 3445.27 ft T: -33.07 C 700-500 lapse rate: 7.54 C/km ThetaE index: 1.69 C Layer 700.0- 532.0 mb Conv cond level (CCL): 943.00 mb = 736.51 m = 2416.33 ft Mean mixing ratio: 0.25 g/kg Conv temperature: -33.20 C = -27.76 F Cap Strength: 35.03 C Lifted Index: 34.92 C Risk: None Lifted Index @300 mb: 36.07 C Lifted Index @700 mb: 32.73 C Showalter Index: 27.36 C Risk: None Total Totals Index: 9.80 C Risk: None Vertical Totals Index: 6.60 C Cross Totals Index: 3.20 C K Index: -25.90 Risk: None Sweat Index: 21.00 Risk: None Energy Index: 7.52 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 71.62 J/kg Max Up Vert Vel: 11.97 m/s Conv Inhibition (B-): 69141.11 J/kg Cap Strength: 35.06 C Lift Cond Lev (LCL): 851.28 mb = 1458.32 m = 4784.47 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 252 at 10 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 ---------------------------------------------------------- 0 943 737 260 1 1.0 0.2 | 71 9 -8.7 -3.1 1 925 872 275 1 1.0 -0.1 | 69 9 -8.7 -3.3 2 850 1469 325 3 1.7 -2.5 | 54 10 -8.0 -5.7 3 700 2939 220 17 10.9 13.0 | 187 10 1.2 9.8 4 500 5380 225 15 10.6 10.6 | 187 7 0.9 7.4 5 400 6920 205 25 10.6 22.7 | 183 19 0.9 19.4 6 300 8760 175 23 -2.0 22.9 | 149 23 -11.7 19.7 7 250 9890 190 23 4.0 22.7 | 164 20 -5.7 19.4 8 232 10339 190 23 4.0 22.7 | 164 20 -5.7 19.4 9 200 11240 195 11 2.8 10.6 | 137 10 -6.8 7.4 10 150 13060 185 15 1.3 14.9 | 144 14 -8.4 11.7 11 100 15700 210 27 13.5 23.4 | 191 21 3.8 20.2 12 70 18050 210 29 14.5 25.1 | 192 22 4.8 21.9 13 50 20240 220 31 19.9 23.7 | 207 23 10.2 20.5 14 30 23550 195 38 9.8 36.7 | 180 33 0.1 33.5 15 20 26180 190 46 8.0 45.3 | 178 42 -1.7 42.1 Wind Parameters Mean winds (0-6000m): 221.6 at 13.6 knts Storm direction: 251.6 at 10.2 knts Shear (0-3000m) pos: 0.9 neg: 3.0 tot: 3.8 10-3/s Storm rel Dir Shear (0-3000m): 116.8 deg Storm rel helicity (0-3000m) pos: 0.1 neg: -30.6 tot: -30.5 m^2/s^2 ave: -10.2 10^-3 m/s^2 rel: -0.72 Storm rel vorticity (0-3000m) horiz: 4.7 stream: -3.4 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 3.12 Bulk Shear: 22.94 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 ------------------------------------------------------------------------------- 500 291 1 66 9| 1.7 0.0 1.7| 0.0 -4.0 -4.0 -8.0 -0.96| 1.8 -1.7 1000 310 2 59 9| 2.5 0.0 2.5| 0.0 -12.3 -12.3 -12.3 -0.89| 2.9 -2.6 1500 288 4 52 7| 1.7 2.3 4.0| 0.0 -19.6 -19.6 -13.1 -0.78| 4.3 -3.4 2000 252 6 71 4| 1.3 3.7 4.9| 0.0 -25.5 -25.5 -12.8 -0.79| 5.7 -4.4 2500 232 8 119 4| 1.0 3.5 4.6| 0.0 -30.6 -30.5 -12.2 -0.74| 5.5 -4.1 3000 228 10 140 4| 0.9 3.0 3.8| 0.1 -30.6 -30.5 -10.2 -0.72| 4.7 -3.4 4000 226 11 160 5| 0.8 2.2 3.0| 0.1 -30.6 -30.5 -7.6 -0.70| 3.6 -2.5 5000 225 12 169 5| 0.6 2.0 2.7| 0.6 -30.7 -30.1 -6.0 -0.62| 3.2 -2.0 6000 222 14 175 7| 0.5 2.3 2.9| 0.6 -35.6 -35.0 -5.8 -0.53| 3.4 -1.8 Wrote GIF file: /home/apache/climate/data/raob//U4688/skewt/U4688.skewt.20260117.12.gif