UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025121812.upa.cvt Date: 1200Z 18 DEC 25 Searching for X8341... Searching the city database file for: X8341 ... Date:1200Z 18 DEC 25 Station: X8341 WMO ident: 38341 Latitude: 42.85 Longitude: 71.38 ------------------------------------------------------------------------------- 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 266 SFC 953 641 -1.1 -2.2 92 1.1 -1.6 145 3 275.8 276.4 274.1 285.2 3.41 2 952 649 -0.9 146 3 276.1 3 929 839 -2.3 171 5 276.6 4 925 873 -1.9 -1.9 100 0.0 -1.9 175 5 277.4 278.0 275.2 287.3 3.59 5 900 1091 -1.9 204 6 279.5 6 892 1163 0.0 -0.4 97 0.4 -0.2 214 6 282.2 282.9 278.6 293.9 4.16 7 850 1547 -3.7 -3.7 100 0.0 -3.7 265 7 282.3 282.9 277.6 291.9 3.42 8 799 2032 -7.3 -7.3 100 0.0 -7.3 257 11 283.5 283.9 277.3 291.4 2.76 9 700 3056 -10.7 -10.7 100 0.0 -10.7 240 21 290.6 291.1 280.4 297.8 2.41 10 673 3358 -11.3 241 24 293.3 11 596 4279 -17.3 245 35 296.7 12 531 5138 -20.7 -20.7 100 0.0 -20.7 248 45 302.6 302.8 284.2 307.0 1.38 13 500 5580 -23.9 -23.9 100 0.0 -23.9 250 50 303.9 304.1 284.4 307.5 1.11 14 400 7170 -35.9 -36.7 92 0.8 -36.0 250 62 308.3 308.4 285.2 309.8 0.41 15 300 9100 -51.9 -54.6 73 2.7 -52.0 260 46 312.2 312.2 286.2 312.5 0.08 16 266 9869 -57.5 -60.8 66 3.3 -57.6 260 44 314.9 315.0 287.1 315.1 0.04 17 250 10260 -57.7 -61.0 66 3.3 -57.8 250 50 320.3 320.3 288.9 320.4 0.04 18 205 11514 -58.4 -61.8 65 3.4 -58.5 260 79 337.9 337.9 293.9 338.1 0.05 19 200 11670 -58.5 -61.9 65 3.4 -58.6 265 77 340.1 340.1 294.4 340.3 0.05 20 150 13480 -60.7 -64.5 61 3.8 -60.8 265 68 365.5 365.5 299.8 365.7 0.04 21 100 16000 -61.1 -66.1 51 5.0 -61.2 265 54 409.7 409.7 306.5 409.9 0.05 22 70 18210 -61.5 -68.5 39 7.0 -61.7 275 38 452.8 452.8 311.1 453.1 0.05 23 54 19815 -64.1 -73.1 28 9.0 -64.3 275 46 481.7 481.7 313.6 481.9 0.04 24 50 20290 -62.1 -72.1 25 10.0 -62.4 275 48 497.1 497.2 314.8 497.4 0.05 25 40 21679 -58.9 -69.9 23 11.0 -59.5 273 43 537.9 538.0 317.4 538.5 0.08 26 36 22335 -61.9 -73.9 19 12.0 -62.4 272 40 546.6 546.6 317.9 547.0 0.05 27 30 23470 -59.3 -73.3 15 14.0 -60.2 270 36 583.0 583.0 319.8 583.4 0.06 28 20 26030 -54.3 -79.3 3 25.0 -56.6 265 40 670.0 670.0 323.4 670.3 0.04 29 18 26705 -54.7 -85.7 1 31.0 -57.2 689.2 689.2 324.1 689.3 0.01 30 17 27075 -49.9 -82.9 1 33.0 -53.8 716.0 716.0 325.0 716.1 0.02 31 14 28342 -50.5 -83.5 1 33.0 -54.8 754.8 754.8 326.1 755.0 0.03 32 13 28835 -42.3 -78.3 1 36.0 -50.2 799.4 799.4 327.3 800.0 0.07 33 11 29970 -39.9 -75.9 1 36.0 -49.7 847.2 847.3 328.4 848.4 0.12 34 10 30617 -43.3 -78.3 1 35.0 -51.8 857.9 858.0 328.6 858.8 0.09 TRP 266 9869 -57.5 -60.8 66 3.3 -57.6 260 44 314.9 315.0 287.1 315.1 0.04 WND 205 11514 -58.4 -61.8 65 3.4 -58.5 260 79 337.9 337.9 293.9 338.1 0.05 Sounding variables and indices 1000-500 mb thick: 5314.00 m Freezing level: Surface below freezing Freezing level: 892.00 mb = 1162.69 m = 3814.57 ft Freezing level: 892.00 mb = 1162.69 m = 3814.57 ft Wetbulb zero: Below ground Precipitable water: 0.51 inches Sfc-500 mean rel hum: 99.77 % Est. max temperature: 6.35 C = 43.43 F Sfc-Lift cond lev (LCL): 936.59 mb = 776.18 m = 2546.50 ft T: -1.83 C 700-500 lapse rate: 5.23 C/km ThetaE index: 2.50 C Layer 850.0- 700.0 mb Conv cond level (CCL): 953.00 mb = 640.99 m = 2102.95 ft Mean mixing ratio: 3.75 g/kg Conv temperature: -0.92 C = 30.34 F Cap Strength: 11.68 C Lifted Index: 12.29 C Risk: None Lifted Index @300 mb: 15.73 C Lifted Index @700 mb: 4.87 C Showalter Index: 10.88 C Risk: None Total Totals Index: 40.40 C Risk: None Vertical Totals Index: 20.20 C Cross Totals Index: 20.20 C K Index: 16.50 Risk: < 20 % chance of thunderstorms Sweat Index: 64.00 Risk: None Energy Index: 3.18 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 35.37 J/kg Max Up Vert Vel: 8.41 m/s Conv Inhibition (B-): 65713.98 J/kg Cap Strength: 12.26 C Lift Cond Lev (LCL): 901.40 mb = 1078.93 m = 3539.74 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 277 at 22 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 ---------------------------------------------------------- 0 953 641 145 3 -1.7 2.5 | 103 24 -23.4 5.3 1 925 873 175 5 -0.4 5.0 | 109 23 -22.2 7.8 2 850 1547 265 7 7.0 0.6 | 103 15 -14.8 3.4 3 700 3056 240 21 18.2 10.5 | 165 14 -3.5 13.3 4 500 5580 250 50 47.0 17.1 | 232 32 25.3 19.9 5 400 7170 250 62 58.3 21.2 | 237 44 36.5 24.0 6 300 9100 260 46 45.3 8.0 | 245 26 23.6 10.8 7 266 9869 260 44 43.3 7.6 | 244 24 21.6 10.5 8 250 10260 250 50 47.0 17.1 | 232 32 25.3 19.9 9 205 11514 260 79 77.8 13.7 | 254 58 56.1 16.5 10 200 11670 265 77 76.7 6.7 | 260 56 55.0 9.5 11 150 13480 265 68 67.7 5.9 | 259 47 46.0 8.7 12 100 16000 265 54 53.8 4.7 | 257 33 32.1 7.5 13 70 18210 275 38 37.9 -3.3 | 272 16 16.1 -0.5 14 50 20290 275 48 47.8 -4.2 | 273 26 26.1 -1.4 15 30 23470 270 36 36.0 -0.0 | 259 15 14.3 2.8 16 20 26030 265 40 39.8 3.5 | 251 19 18.1 6.3 Wind Parameters Mean winds (0-6000m): 247.4 at 29.2 knts Storm direction: 277.4 at 21.9 knts Shear (0-3000m) pos: 2.6 neg: 2.6 tot: 5.2 10-3/s Storm rel Dir Shear (0-3000m): 87.5 deg Storm rel helicity (0-3000m) pos: 90.1 neg: -11.6 tot: 78.5 m^2/s^2 ave: 26.2 10^-3 m/s^2 rel: 0.60 Storm rel vorticity (0-3000m) horiz: 5.9 stream: 3.5 10^-3/s Energy-Hel index: 0.01 Bulk Rich Number: 0.35 Bulk Shear: 100.65 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 ------------------------------------------------------------------------------- 500 182 5 109 23| 5.5 0.0 5.5| 24.9 0.0 24.9 49.9 0.64| 6.5 4.1 1000 223 6 111 19| 5.0 0.0 5.0| 26.5 -11.6 14.9 14.9 0.13| 6.8 0.9 1500 242 7 112 17| 3.3 1.7 5.0| 38.9 -11.6 27.3 18.2 0.30| 6.2 1.9 2000 245 9 116 15| 2.5 2.5 5.0| 53.5 -11.6 41.9 20.9 0.45| 6.0 2.7 2500 242 11 124 14| 2.0 3.1 5.1| 68.9 -11.6 57.3 22.9 0.53| 5.9 3.1 3000 242 13 132 14| 2.6 2.6 5.2| 90.1 -11.6 78.5 26.2 0.60| 5.9 3.5 4000 243 18 154 12| 3.4 1.9 5.4|135.9 -11.6 124.3 31.1 0.64| 5.9 3.8 5000 246 24 181 13| 3.9 1.5 5.5|187.4 -11.6 175.8 35.2 0.63| 6.0 3.8 6000 247 29 200 15| 3.3 1.9 5.2|207.5 -11.6 195.9 32.6 0.59| 5.6 3.3 Wrote GIF file: /home/apache/climate/data/raob//X8341/skewt/X8341.skewt.20251218.12.gif