UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025041900.upa.cvt Date: 0000Z 19 APR 25 Searching for U4688... Searching the city database file for: U4688 ... Date:0000Z 19 APR 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 154 SFC 928 743 -6.7 -13.7 57 7.0 -8.5 10 3 272.2 272.4 268.8 276.2 1.43 2 925 769 -7.3 -19.3 38 12.0 -9.9 355 3 271.8 272.0 267.6 274.4 0.90 3 924 777 -7.3 -19.3 38 12.0 -9.9 354 3 271.9 272.1 267.7 274.5 0.90 4 850 1425 -10.3 -19.3 48 9.0 -12.3 310 7 275.4 275.5 270.0 278.2 0.98 5 837 1543 -11.5 -19.5 52 8.0 -13.2 311 8 275.3 275.5 270.0 278.1 0.97 6 744 2444 -13.1 -22.1 47 9.0 -15.0 320 15 283.0 283.2 274.3 285.6 0.87 7 718 2715 -12.5 -18.5 61 6.0 -13.9 323 17 286.6 286.8 276.8 290.3 1.24 8 700 2909 -13.7 -19.7 60 6.0 -15.1 325 19 287.3 287.5 277.0 290.8 1.14 9 588 4213 -20.9 -25.6 66 4.7 -21.7 328 25 293.6 293.8 279.6 296.2 0.81 10 547 4742 -24.1 -29.1 63 5.0 -24.9 329 28 296.0 296.1 280.4 298.0 0.63 11 500 5390 -29.1 -34.1 62 5.0 -29.7 330 31 297.6 297.6 280.9 299.0 0.43 12 400 6940 -41.9 -51.9 33 10.0 -42.3 320 42 300.5 300.5 281.7 300.8 0.08 13 397 6991 -42.9 -52.9 33 10.0 -43.3 320 43 299.9 299.9 281.4 300.1 0.07 14 362 7609 -47.5 -59.5 24 12.0 -47.8 324 52 301.7 301.8 282.1 301.9 0.03 15 311 8599 -54.2 -66.2 22 12.0 -54.4 330 68 305.7 305.7 283.7 305.8 0.02 16 301 8809 -55.7 -67.7 21 12.0 -55.8 330 66 306.5 306.5 284.0 306.6 0.01 17 300 8830 -55.5 -67.5 21 12.0 -55.6 330 64 307.1 307.1 284.2 307.2 0.01 18 257 9814 -56.3 -67.3 24 11.0 -56.5 322 54 319.8 319.8 288.7 319.9 0.02 19 250 9990 -54.9 -65.9 24 11.0 -55.1 320 52 324.4 324.5 290.1 324.5 0.02 20 214 10991 -50.1 -62.1 23 12.0 -50.4 317 36 346.7 346.7 295.9 346.8 0.04 21 200 11430 -52.1 -65.1 20 13.0 -52.4 315 29 350.3 350.3 296.7 350.4 0.03 22 150 13320 -49.7 -65.7 14 16.0 -50.3 300 19 384.4 384.4 303.0 384.6 0.04 23 123 14610 -51.1 -68.1 11 17.0 -51.7 280 17 404.3 404.3 305.8 404.5 0.03 24 101 15886 -51.9 -69.9 10 18.0 -52.6 261 15 426.2 426.2 308.4 426.4 0.03 25 100 15950 -52.1 -70.1 10 18.0 -52.8 260 15 427.1 427.1 308.5 427.2 0.03 26 75 17821 -50.7 -69.7 9 19.0 -51.7 252 12 466.6 466.6 312.4 466.9 0.04 27 70 18270 -52.1 -70.1 10 18.0 -53.0 250 11 472.9 472.9 312.9 473.2 0.04 28 63 18951 -54.1 -73.1 8 19.0 -54.9 253 10 483.0 483.0 313.7 483.2 0.03 29 50 20440 -53.1 -72.1 8 19.0 -54.2 260 9 518.3 518.4 316.2 518.6 0.05 30 42 21560 -53.9 -72.9 8 19.0 -55.1 262 8 542.9 542.9 317.7 543.2 0.05 31 38 22203 -53.5 -72.5 8 19.0 -54.9 263 8 559.6 559.7 318.6 560.0 0.06 32 30 23720 -54.3 -73.3 8 19.0 -55.9 265 7 596.6 596.6 320.5 597.1 0.06 33 26 24636 -53.7 -73.7 7 20.0 -55.6 299 7 623.2 623.3 321.6 623.8 0.07 34 21 26006 -53.7 -73.7 7 20.0 -55.9 349 7 662.5 662.5 323.2 663.2 0.08 35 20 26320 -53.1 -74.1 6 21.0 -55.6 360 7 673.6 673.7 323.6 674.3 0.08 36 12 29645 -48.7 -69.7 7 21.0 -53.7 795.2 795.3 327.2 797.8 0.27 37 10 30840 -50.3 -71.3 7 21.0 -55.3 831.8 831.9 328.1 834.4 0.25 TRP 301 8809 -55.7 -67.7 21 12.0 -55.8 330 66 306.5 306.5 284.0 306.6 0.01 WND 311 8599 -54.2 -66.2 22 12.0 -54.4 330 68 305.7 305.7 283.7 305.8 0.02 Sounding variables and indices 1000-500 mb thick: 5236.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.17 inches Sfc-500 mean rel hum: 56.71 % Est. max temperature: 0.99 C = 33.78 F Sfc-Lift cond lev (LCL): 829.99 mb = 1607.78 m = 5274.81 ft T: -11.61 C 700-500 lapse rate: 6.21 C/km ThetaE index: 1.80 C Layer 925.0- 924.0 mb Conv cond level (CCL): 540.67 mb = 4826.35 m = 15834.27 ft Mean mixing ratio: 0.95 g/kg Conv temperature: 16.76 C = 62.16 F Cap Strength: 16.66 C Lifted Index: 17.40 C Risk: None Lifted Index @300 mb: 21.53 C Lifted Index @700 mb: 11.42 C Showalter Index: 16.23 C Risk: None Total Totals Index: 28.60 C Risk: None Vertical Totals Index: 18.80 C Cross Totals Index: 9.80 C K Index: -6.50 Risk: None Sweat Index: 45.00 Risk: None Energy Index: 4.41 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 11.22 J/kg Max Up Vert Vel: 4.74 m/s Conv Inhibition (B-): 65529.20 J/kg Cap Strength: 17.27 C Lift Cond Lev (LCL): 746.72 mb = 2416.15 m = 7926.90 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 356 at 17 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 ---------------------------------------------------------- 0 928 743 10 3 -0.5 -3.0 | 173 14 -1.7 13.9 1 925 769 355 3 0.3 -3.0 | 176 14 -1.0 13.8 2 850 1425 310 7 5.4 -4.5 | 199 13 4.1 12.3 3 700 2909 325 19 10.9 -15.6 | 263 10 9.7 1.3 4 500 5390 330 31 15.5 -26.8 | 305 17 14.3 -10.0 5 400 6940 320 42 27.0 -32.2 | 301 30 25.8 -15.3 6 311 8599 330 68 34.0 -58.9 | 322 53 32.8 -42.1 7 301 8809 330 66 33.0 -57.2 | 322 51 31.8 -40.3 8 300 8830 330 64 32.0 -55.4 | 321 49 30.8 -38.6 9 250 9990 320 52 33.4 -39.8 | 306 40 32.2 -23.0 10 200 11430 315 29 20.5 -20.5 | 281 20 19.3 -3.7 11 150 13320 300 19 16.5 -9.5 | 244 17 15.2 7.3 12 100 15950 260 15 14.8 2.6 | 215 24 13.6 19.4 13 70 18270 250 11 10.3 3.8 | 204 23 9.1 20.6 14 50 20440 260 9 8.9 1.6 | 203 20 7.6 18.4 15 30 23720 265 7 7.0 0.6 | 198 18 5.8 17.4 16 20 26320 360 7 -0.0 -7.0 | 173 10 -1.2 9.8 Wind Parameters Mean winds (0-6000m): 325.9 at 22.5 knts Storm direction: 355.9 at 16.9 knts Shear (0-3000m) pos: 2.4 neg: 1.4 tot: 3.8 10-3/s Storm rel Dir Shear (0-3000m): 109.0 deg Storm rel helicity (0-3000m) pos: 63.3 neg: 0.0 tot: 63.3 m^2/s^2 ave: 21.1 10^-3 m/s^2 rel: 0.93 Storm rel vorticity (0-3000m) horiz: 3.9 stream: 3.6 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 0.26 Bulk Shear: 43.80 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 ------------------------------------------------------------------------------- 500 334 4 183 13| 0.0 4.6 4.6| 14.0 0.0 14.0 28.0 0.91| 4.7 4.2 1000 319 6 192 13| 0.0 4.3 4.3| 27.1 0.0 27.1 27.1 0.91| 4.6 4.1 1500 318 8 200 12| 1.4 2.9 4.3| 38.4 0.0 38.4 25.6 0.92| 4.5 4.1 2000 320 10 209 11| 2.2 2.1 4.3| 49.5 0.0 49.5 24.7 0.93| 4.5 4.2 2500 322 12 218 10| 2.4 1.7 4.1| 57.2 0.0 57.2 22.9 0.94| 4.2 3.9 3000 323 13 227 9| 2.4 1.4 3.8| 63.3 0.0 63.3 21.1 0.93| 3.9 3.6 4000 325 16 248 9| 2.4 1.1 3.5| 76.0 0.0 76.0 19.0 0.90| 3.6 3.2 5000 327 19 266 9| 2.2 1.2 3.4| 84.7 -0.7 84.0 16.8 0.79| 3.5 2.8 6000 326 23 279 12| 1.8 1.7 3.5| 84.7 -9.4 75.4 12.6 0.61| 3.6 2.2 Wrote GIF file: /home/apache/climate/data/raob//U4688/skewt/U4688.skewt.20250419.00.gif