UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025041512.upa.cvt Date: 1200Z 15 APR 25 Searching for X1873... Searching the city database file for: X1873 ... Date:1200Z 15 APR 25 Station: X1873 WMO ident: 31873 Latitude: 45.87 Longitude: 133.73 ------------------------------------------------------------------------------- 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 -28 SFC 984 105 7.4 2.5 71 4.9 5.1 315 3 281.8 282.6 279.0 294.8 4.65 2 925 612 5.2 0.3 71 4.9 2.9 325 19 284.6 285.4 279.8 296.6 4.22 3 850 1295 0.0 -3.5 77 3.5 -1.4 325 15 286.1 286.8 279.6 296.1 3.47 4 827 1514 -0.9 -3.5 82 2.6 -2.0 321 14 287.4 288.1 280.3 297.7 3.57 5 702 2797 -10.5 -12.0 89 1.5 -11.0 295 5 290.6 291.0 280.0 297.1 2.17 6 700 2819 -10.5 -12.0 89 1.5 -11.0 295 5 290.9 291.2 280.1 297.4 2.17 7 565 4431 -20.7 -23.9 75 3.2 -21.3 346 9 297.2 297.4 281.5 300.4 0.98 8 500 5320 -28.1 -31.7 71 3.6 -28.6 15 11 298.8 298.9 281.5 300.6 0.54 9 400 6880 -40.7 -45.5 60 4.8 -40.9 35 13 302.1 302.1 282.4 302.7 0.16 10 351 7750 -48.3 -53.3 56 5.0 -48.4 13 23 303.3 303.4 282.8 303.6 0.08 11 324 8271 -51.3 -57.3 49 6.0 -51.4 360 29 306.2 306.2 284.0 306.4 0.05 12 319 8371 -51.3 -57.3 49 6.0 -51.4 359 29 307.6 307.6 284.5 307.8 0.05 13 306 8641 -50.3 -55.3 55 5.0 -50.4 356 28 312.7 312.7 286.4 312.9 0.07 14 300 8770 -48.7 -54.7 50 6.0 -48.9 355 27 316.7 316.7 287.8 317.0 0.08 15 267 9542 -45.1 -51.1 51 6.0 -45.4 336 18 332.7 332.7 292.6 333.2 0.13 16 250 9980 -45.7 -51.7 51 6.0 -46.0 325 13 338.1 338.2 294.0 338.7 0.13 17 200 11480 -46.3 -52.3 51 6.0 -46.7 330 7 359.5 359.5 298.7 360.1 0.15 TRP 324 8271 -51.3 -57.3 49 6.0 -51.4 360 29 306.2 306.2 284.0 306.4 0.05 WND Sounding variables and indices 1000-500 mb thick: 5348.00 m Freezing level: 850.00 mb = 1295.00 m = 4248.64 ft Wetbulb zero: 874.66 mb = 1063.97 m = 3490.69 ft Precipitable water: 0.52 inches Sfc-500 mean rel hum: 79.25 % Est. max temperature: 12.58 C = 54.64 F Sfc-Lift cond lev (LCL): 912.87 mb = 718.64 m = 2357.72 ft T: 4.39 C 700-500 lapse rate: 7.04 C/km ThetaE index: 0.63 C Layer 702.0- 700.0 mb Conv cond level (CCL): 822.61 mb = 1555.71 m = 5103.97 ft Mean mixing ratio: 4.26 g/kg Conv temperature: 13.09 C = 55.56 F Cap Strength: 3.60 C Lifted Index: 3.70 C Risk: None Lifted Index @300 mb: 14.74 C Lifted Index @700 mb: 1.32 C Showalter Index: 3.64 C Risk: None Total Totals Index: 52.70 C Risk: Scattered heavy thunderstorms Vertical Totals Index: 28.10 C Cross Totals Index: 24.60 C K Index: 23.10 Risk: 20-40 % chance of thunderstorms Sweat Index: 115.00 Risk: None Energy Index: 0.89 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 13.59 J/kg Max Up Vert Vel: 5.21 m/s Conv Inhibition (B-): 4244.38 J/kg Cap Strength: 3.69 C Lift Cond Lev (LCL): 867.22 mb = 1132.99 m = 3717.12 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 10 at 8 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 ---------------------------------------------------------- 0 984 105 315 3 2.1 -2.1 | 212 6 3.4 5.4 1 925 612 325 19 10.9 -15.6 | 303 15 12.2 -8.0 2 850 1295 325 15 8.6 -12.3 | 296 11 9.9 -4.8 3 700 2819 295 5 4.5 -2.1 | 227 8 5.8 5.4 4 500 5320 15 11 -2.8 -10.6 | 27 3 -1.6 -3.1 5 400 6880 35 13 -7.5 -10.6 | 63 7 -6.2 -3.1 6 324 8271 360 29 -0.0 -29.0 | 357 22 1.3 -21.5 7 300 8770 355 27 2.4 -26.9 | 349 20 3.6 -19.4 8 250 9980 325 13 7.5 -10.6 | 290 9 8.7 -3.1 9 200 11480 330 7 3.5 -6.1 | 253 5 4.8 1.5 Wind Parameters Mean winds (0-6000m): 339.7 at 10.2 knts Storm direction: 9.7 at 7.6 knts Shear (0-3000m) pos: 2.2 neg: 1.8 tot: 4.0 10-3/s Storm rel Dir Shear (0-3000m): 21.9 deg Storm rel helicity (0-3000m) pos: 29.7 neg: -31.6 tot: -1.9 m^2/s^2 ave: -0.6 10^-3 m/s^2 rel: 0.04 Storm rel vorticity (0-3000m) horiz: 5.5 stream: 0.2 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 11.15 Bulk Shear: 1.22 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 ------------------------------------------------------------------------------- 500 324 11 279 8| 16.3 0.0 16.3| 28.0 0.0 28.0 56.0 0.79| 16.5 13.0 1000 324 14 293 10| 6.8 0.0 6.8| 28.0 -3.6 24.4 24.4 0.62| 9.6 6.0 1500 324 14 293 11| 4.5 1.2 5.7| 28.0 -11.7 16.3 10.8 0.39| 7.6 3.0 2000 322 14 289 10| 3.4 1.9 5.3| 28.0 -20.9 7.1 3.6 0.20| 6.7 1.3 2500 321 12 284 9| 2.7 2.2 4.9| 28.0 -28.7 -0.7 -0.3 0.06| 6.1 0.3 3000 320 11 278 9| 2.2 1.8 4.0| 29.7 -31.6 -1.9 -0.6 0.04| 5.5 0.2 4000 321 10 273 8| 2.1 1.4 3.4| 35.4 -31.6 3.8 0.9 0.13| 4.7 0.6 5000 329 10 279 6| 1.9 1.1 3.0| 39.7 -31.6 8.1 1.6 0.23| 4.4 1.0 6000 340 10 293 5| 1.6 0.9 2.6| 42.5 -31.6 11.0 1.8 0.28| 3.9 1.1 Wrote GIF file: /home/apache/climate/data/raob//X1873/skewt/X1873.skewt.20250415.12.gif