UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025122812.upa.cvt Date: 1200Z 28 DEC 25 Searching for U4641... Searching the city database file for: U4641 ... Date:1200Z 28 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 ------------------------------------------------------------------------------- 0 1000 106 360 1 SFC 999 113 -39.5 -43.6 65 4.1 -39.6 360 1 233.7 233.7 233.6 233.9 0.08 2 991 168 -37.7 -42.5 61 4.8 -37.8 356 2 236.1 236.1 235.9 236.3 0.09 3 977 266 -37.5 -42.3 61 4.8 -37.7 350 3 237.2 237.2 237.0 237.5 0.09 4 941 530 -28.3 -33.1 63 4.8 -28.6 333 7 249.1 249.2 248.4 249.8 0.25 5 925 653 -27.7 -31.9 67 4.2 -28.0 325 9 251.0 251.0 250.2 251.8 0.29 6 924 661 -27.7 -31.9 67 4.2 -28.0 325 9 251.1 251.1 250.3 251.9 0.29 7 878 1033 -21.7 -25.0 75 3.3 -22.1 328 9 261.0 261.1 259.1 262.6 0.57 8 850 1272 -21.1 -24.4 75 3.3 -21.5 330 9 264.0 264.1 261.6 265.8 0.62 9 820 1537 -21.5 -25.1 73 3.6 -22.0 327 9 266.3 266.4 263.3 268.1 0.61 10 700 2689 -27.9 -31.9 69 4.0 -28.3 315 7 271.6 271.7 266.5 272.7 0.38 11 619 3563 -31.5 -35.3 69 3.8 -31.8 293 10 277.2 277.2 270.0 278.1 0.31 12 519 4787 -39.5 -43.6 65 4.1 -39.7 262 14 281.9 281.9 272.5 282.4 0.15 13 500 5040 -41.7 -45.7 65 4.0 -41.9 255 15 282.2 282.2 272.6 282.6 0.13 14 400 6510 -54.7 -58.9 60 4.2 -54.8 245 29 283.9 283.9 273.5 284.0 0.03 15 391 6655 -55.9 -59.9 61 4.0 -55.9 243 29 284.2 284.2 273.6 284.3 0.03 16 300 8320 -61.1 -65.1 59 4.0 -61.2 225 27 299.2 299.2 281.0 299.3 0.02 17 287 8596 -62.5 -66.8 56 4.3 -62.6 235 15 301.0 301.0 281.8 301.1 0.02 18 286 8617 -62.5 -66.8 56 4.3 -62.6 234 15 301.3 301.3 281.9 301.4 0.02 19 250 9460 -58.1 -62.6 56 4.5 -58.2 205 11 319.7 319.7 288.7 319.8 0.03 20 246 9561 -57.1 -61.5 57 4.4 -57.2 208 11 322.7 322.7 289.6 322.8 0.04 21 222 10207 -57.3 -61.9 56 4.6 -57.4 229 10 332.0 332.0 292.3 332.1 0.04 22 216 10380 -54.9 -59.5 57 4.6 -55.0 234 10 338.3 338.3 294.0 338.5 0.06 23 213 10469 -53.9 -58.7 56 4.8 -54.0 237 10 341.2 341.2 294.7 341.5 0.07 24 200 10870 -55.1 -59.9 55 4.8 -55.2 250 9 345.5 345.5 295.7 345.8 0.06 25 150 12700 -56.3 -63.3 41 7.0 -56.5 205 21 373.1 373.1 301.1 373.3 0.05 26 114 14438 -57.9 -66.9 31 9.0 -58.1 208 24 400.6 400.6 305.3 400.8 0.04 27 100 15270 -55.3 -65.3 28 10.0 -55.7 210 25 420.9 420.9 307.9 421.2 0.06 28 96 15531 -54.5 -64.5 28 10.0 -54.9 210 26 427.4 427.4 308.6 427.7 0.07 29 70 17550 -55.5 -67.5 21 12.0 -56.1 210 31 465.7 465.7 312.3 466.0 0.06 30 60 18535 -54.3 -68.3 16 14.0 -55.1 210 45 489.3 489.3 314.2 489.7 0.06 31 50 19720 -48.1 -64.1 14 16.0 -49.8 210 62 530.1 530.2 317.0 531.0 0.14 32 35 22087 -45.3 -64.3 10 19.0 -48.4 213 93 594.4 594.4 320.4 595.8 0.19 33 30 23120 -43.5 -64.5 8 21.0 -47.6 215 106 626.1 626.1 321.8 627.8 0.22 34 28 23587 -41.9 -63.7 8 21.8 -46.7 220 110 642.9 643.0 322.5 645.0 0.26 35 25 24360 -39.3 -62.3 7 23.0 -45.4 217 106 671.6 671.8 323.6 674.6 0.35 36 23 24928 -43.1 -67.1 5 24.0 -48.2 214 102 676.7 676.7 323.7 678.3 0.20 37 20 25870 -43.7 -68.7 5 25.0 -49.1 210 97 702.4 702.5 324.6 704.0 0.18 38 18 26578 -43.9 -69.9 4 26.0 -49.6 723.3 723.3 325.2 724.8 0.17 TRP 287 8596 -62.5 -66.8 56 4.3 -62.6 235 15 301.0 301.0 281.8 301.1 0.02 WND 28 23587 -41.9 -63.7 8 21.8 -46.7 220 110 642.9 643.0 322.5 645.0 0.26 Sounding variables and indices 1000-500 mb thick: 4934.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.08 inches Sfc-500 mean rel hum: 68.55 % Est. max temperature: -9.11 C = 15.60 F Sfc-Lift cond lev (LCL): 929.81 mb = 615.81 m = 2020.37 ft T: -27.88 C 700-500 lapse rate: 5.87 C/km ThetaE index: 0.00 C Layer 999.0-16093824937590953869312.0 mb Conv cond level (CCL): 999.00 mb = 112.84 m = 370.20 ft Mean mixing ratio: 0.22 g/kg Conv temperature: -33.87 C = -28.96 F Cap Strength: 29.56 C Lifted Index: 29.53 C Risk: None Lifted Index @300 mb: 37.55 C Lifted Index @700 mb: 23.06 C Showalter Index: 13.53 C Risk: None Total Totals Index: 37.90 C Risk: None Vertical Totals Index: 20.60 C Cross Totals Index: 17.30 C K Index: -7.80 Risk: None Sweat Index: 33.00 Risk: None Energy Index: 3.55 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 87.18 J/kg Max Up Vert Vel: 13.20 m/s Conv Inhibition (B-): 73336.87 J/kg Cap Strength: 29.57 C Lift Cond Lev (LCL): 898.87 mb = 861.61 m = 2826.77 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 310 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 ---------------------------------------------------------- 0 999 113 360 1 -0.0 -1.0 | 124 8 -6.5 4.4 1 925 653 325 9 5.2 -7.4 | 34 2 -1.3 -2.0 2 850 1272 330 9 4.5 -7.8 | 40 3 -2.0 -2.4 3 700 2689 315 7 4.9 -4.9 | 106 2 -1.6 0.4 4 500 5040 255 15 14.5 3.9 | 221 12 8.0 9.3 5 400 6510 245 29 26.3 12.3 | 228 27 19.8 17.6 6 300 8320 225 27 19.1 19.1 | 207 28 12.6 24.5 7 287 8596 235 15 12.3 8.6 | 202 15 5.8 14.0 8 250 9460 205 11 4.6 10.0 | 173 15 -1.9 15.4 9 200 10870 250 9 8.5 3.1 | 193 9 2.0 8.5 10 150 12700 205 21 8.9 19.0 | 186 25 2.4 24.4 11 100 15270 210 25 12.5 21.7 | 192 28 6.0 27.0 12 70 17550 210 31 15.5 26.8 | 196 33 9.0 32.2 13 50 19720 210 62 31.0 53.7 | 203 64 24.5 59.1 14 30 23120 215 106 60.8 86.8 | 210 107 54.3 92.2 15 28 23587 220 110 70.7 84.3 | 216 110 64.2 89.7 16 20 25870 210 97 48.5 84.0 | 205 99 42.0 89.4 Wind Parameters Mean winds (0-6000m): 279.6 at 11.3 knts Storm direction: 309.6 at 8.4 knts Shear (0-3000m) pos: 0.1 neg: 1.3 tot: 1.4 10-3/s Storm rel Dir Shear (0-3000m): 92.5 deg Storm rel helicity (0-3000m) pos: 1.5 neg: -8.4 tot: -6.9 m^2/s^2 ave: -2.3 10^-3 m/s^2 rel: -0.20 Storm rel vorticity (0-3000m) horiz: 2.4 stream: -0.5 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 8.28 Bulk Shear: 10.53 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 ------------------------------------------------------------------------------- 500 329 5 109 4| 0.0 7.8 7.8| 0.0 -8.0 -8.0 -15.9 -0.75| 8.2 -6.2 1000 327 7 83 3| 0.3 3.9 4.2| 0.1 -8.4 -8.3 -8.3 -0.71| 4.7 -3.3 1500 328 7 70 3| 0.2 2.4 2.7| 0.4 -8.4 -8.0 -5.3 -0.61| 3.4 -2.1 2000 327 8 67 3| 0.2 1.7 1.8| 0.8 -8.4 -7.6 -3.8 -0.49| 2.8 -1.4 2500 326 8 68 2| 0.1 1.2 1.3| 1.2 -8.4 -7.2 -2.9 -0.37| 2.5 -0.9 3000 323 8 70 2| 0.1 1.3 1.4| 1.5 -8.4 -6.9 -2.3 -0.20| 2.4 -0.5 4000 312 8 69 0| 0.1 1.5 1.6| 1.7 -9.0 -7.3 -1.8 -0.14| 2.6 -0.4 5000 295 9 234 2| 0.1 1.6 1.7| 2.3 -14.7 -12.4 -2.5 -0.18| 2.8 -0.5 6000 280 11 233 6| 0.1 2.2 2.3| 9.9 -14.7 -4.9 -0.8 -0.09| 3.1 -0.3 Wrote GIF file: /home/apache/climate/data/raob//U4641/skewt/U4641.skewt.20251228.12.gif