513 UXUS45 KVEF 130000 FZLVEF VEF 0000 RADAT 46091=  048 UXUS41 KCAR 130000 FZLCAR CAR 0000 RADAT 26037=  708 UXUS45 KBOI 130000 FZLBOI BOI 0000 RADAT 97053=  418 UXUS45 KRIW 130000 FZLRIW RIW 0000 RADAT 41103=  099 UXUS43 KABR 130000 FZLABR ABR 0000 RADAT 88098=  621 UXUS45 KGJT 130000 FZLGJT GJT 0000 RADAT 28112=  017 UXUS43 KTOP 130000 FZLTOP TOP 0000 RADAT 49119=  277 UXUS41 KPBZ 130000 FZLPBZ PBZ 0000 RADAT 68105=  969 UXUS44 KBRO 130000 FZLBRO BRO 0000 RADAT 69141=  766 UXUS45 KSLC 130000 FZLSLC SLC 0000 RADAT 42096=  450 UXUS46 KMFR 130000 FZLMFR MFR 0000 RADAT 84064=  169 UXUS41 KILN 130000 FZLILN ILN 0000 RADAT 34111=  639 UXUS42 KKEY 130000 FZLKEY KEY 0000 RADAT 07147=  637 UXUS46 KSGX 130000 FZLNKX NKX 0000 RADAT 94085=  661 UXUS46 KMTR 130000 FZLOAK OAK 0000 RADAT 90058=  990 UXUS44 KOHX 130000 FZLOHX OHX 0000 RADAT 01123=  408 UXUS44 KJAN 130000 FZLJAN JAN 0000 RADAT 36138=  180 UXUS43 KDDC 130000 FZLDDC DDC 0000 RADAT 44121=  710 UXUS46 KSEW 130000 FZLUIL UIL 0000 RADAT 92065=  623 UXUS44 KFWD 130000 FZLFWD FWD 0000 RADAT 44130=  980 UXUS43 KILX 130000 FZLILX ILX 0000 RADAT 91115=  314 UXZS40 NSTU 130000 FZLPPG PPG 0000 RADAT 77150=  535 UXAK48 PACD 130000 FZLCDB CDB 0000 RADAT 73009=  940 UXAK48 PAFC 130000 FZLANC ANC 0000 RADAT 00008=  771 UXAK49 PAFA 130000 FZLFAI FAI 0000 RADAT 72018=  075 UXKA40 PTKR 130000 FZLTKR TKR 0000 RADAT 06164=  633 UXHW40 PHTO 130000 FZLITO ITO 0000 RADAT 62147=  449 UXAK48 PADQ 130000 FZLADQ ADQ 0000 RADAT 58011=  878 UXUS46 KPQR 130000 FZLSLE SLE 0000 RADAT 00063=  210 UXAK47 PAYA 130000 FZLYAK YAK 0000 RADAT 00009=  383 UXUS44 KEWX 130000 FZLDRT DRT 0000 RADAT 49131=  193 UXAK47 PANT 130000 FZLANN ANN 0000 RADAT 56039=  914 UXHW40 PHLI 130000 FZLLIH LIH 0000 RADAT 00128=  233 UXUS43 KSGF 130000 FZLSGF SGF 0000 RADAT 62121=  374 UXUS43 KOAX 130000 FZLOAX OAX 0000 RADAT 33112=  462 UXUS41 KBUF 130000 FZLBUF BUF 0000 RADAT 84106=  213 UXUS42 TJSJ 130001 COR FZLSJU SJU 0000 RADAT 67L133145149=  529 UXUS44 KCRP 130000 FZLCRP CRP 0000 RADAT 40140=  913 UXUS43 KLBF 130000 FZLLBF LBF 0000 RADAT 51113=  402 UXUS42 KMHX 130000 FZLMHX MHX 0000 RADAT 29L109118128=  006 UXUS44 KOUN 130000 FZLOUN OUN 0000 RADAT 53123=  965 UXUS44 KSHV 130000 FZLSHV SHV 0000 RADAT 60129=  989 UXGM40 PGUM 130000 FZLGUM GUM 0000 RADAT 77164=  202 UXUS43 KDTX 130000 FZLDTX DTX 0000 RADAT 99108=  502 UXUS41 KGYX 130000 FZLGYX GYX 0000 RADAT 76045=  322 UXUS42 KJAX 130000 FZLJAX JAX 0000 RADAT 15136=  796 UXUS41 KRNK 130000 FZLRNK RNK 0000 RADAT 74108=  437 UXUS44 KLIX 130000 FZLLIX LIX 0000 RADAT 36134=  563 UXUS42 KCHS 130000 FZLCHS CHS 0000 RADAT 30127=  889 UXUS44 KLCH 130000 FZLLCH LCH 0000 RADAT 68133=  766 UXUS45 KFGZ 130000 FZLFGZ FGZ 0000 RADAT 58101=  698 UXUS41 KALY 130000 FZLALY ALY 0000 RADAT 87102=  122 UXUS41 KLWX 130000 FZLIAD IAD 0000 RADAT 51106=  446 UXUS43 KDVN 130000 FZLDVN DVN 0000 RADAT 88112=  628 UXUS44 KAMA 130000 FZLAMA AMA 0000 RADAT 54120=  340 UXUS44 KBMX 130000 FZLBMX BMX 0000 RADAT 07133=  833 UXAK49 PABR 130000 FZLBRW BRW 0000 RADAT ZERO=  189 UXUS41 KOKX 130000 FZLOKX OKX 0000 RADAT 49105=  418 UXUS44 KEPZ 130000 FZLEPZ EPZ 0000 RADAT 48118=  030 UXMH40 PKMR 130000 FZLKMR KMR 0000 RADAT 80154=  422 UXUS45 KREV 130000 FZLREV REV 0000 RADAT 54065=  764 UBUS35 KWBC 130000 PIRUS IAH UUA /OV DAS090020/TM 2340/FL130/TP E175/TB SEV TURB FL130/RM ZHU= MKG UUA /OV MKG/TM 2356/FLDURD/TP E145/RM LLWS +/-10KTS=  025 UXUS42 KRAH 130000 FZLGSO GSO 0000 RADAT 54106=  086 UAFJ01 NFFN 130000 NIL  889 UXUS42 KFFC 130000 FZLFFC FFC 0000 RADAT 12134=  650 UXUS97 KBOU 130005 SRGBOU Soaring Forecast National Weather Service Denver/Boulder, Colorado 1805 MDT Sunday, April 12, 2026 This forecast is for Monday, April 13, 2026: If the trigger temperature of 59.1 F/15.0 C is reached...then Thermal Soaring Index....................... Excellent Maximum rate of lift........................ 862 ft/min (4.4 m/s) Maximum height of thermals.................. 15852 ft MSL (10555 ft AGL) Forecast maximum temperature................... 72.0 F/22.7 C Time of trigger temperature.................... 0930 MDT Time of overdevelopment........................ None Middle/high clouds during soaring window....... None Surface winds during soaring window............ 20 mph or less Height of the -3 thermal index................. 13959 ft MSL (8662 ft AGL) Thermal soaring outlook for Tuesday 04/14...... Fair Wave Soaring Index............................. Poor Wave Soaring Index trend (to 1800 MDT)......... No change Height of stable layer (12-18K ft MSL)......... None Weak PVA/NVA (through 1800 MDT)................ Neither Potential height of wave....................... 44625 ft MSL (39328 ft AGL) Wave soaring outlook for Tuesday 04/14......... Poor Remarks... Sunrise/Sunset.................... 06:24:17 / 19:35:33 MDT Total possible sunshine........... 13 hr 11 min 16 sec (791 min 16 sec) Altitude of sun at 12:59:55 MDT... 59.49 degrees Upper air data from numerical model forecast valid on 04/13/2026 at 0600 MDT Freezing level.................. 10650 ft MSL (5353 ft AGL) Convective condensation level... 17635 ft MSL (12338 ft AGL) Lifted condensation level....... 17043 ft MSL (11746 ft AGL) Lifted index.................... +0.4 K index......................... -4.4 Height Temperature Wind Wind Spd Lapse Rate ConvectionT Thermal Lift Rate ft MSL deg C deg F Dir kt m/s C/km F/kft deg C deg F Index fpm m/s -------------------------------------------------------------------------------- 50000 -57.4 -71.3 235 36 19 -4.4 -2.4 M M M M M 45000 -64.0 -83.2 235 72 37 -4.4 -2.4 M M M M M 40000 -61.5 -78.7 240 78 40 1.8 1.0 M M M M M 38000 -58.7 -73.7 240 78 40 6.8 3.7 M M M M M 36000 -54.6 -66.3 240 76 39 6.8 3.7 M M M M M 34000 -50.4 -58.7 235 75 39 7.6 4.1 M M M M M 32000 -45.9 -50.6 235 73 37 7.5 4.1 M M M M M 30000 -41.4 -42.5 235 70 36 6.6 3.6 35.3 95.5 9.8 M M 29000 -39.0 -38.2 235 68 35 6.7 3.7 33.6 92.5 8.7 M M 28000 -37.0 -34.6 230 67 35 6.7 3.7 32.5 90.4 7.9 M M 27000 -35.0 -31.0 230 65 34 7.0 3.8 31.4 88.6 7.1 M M 26000 -32.9 -27.2 230 61 31 7.0 3.9 30.3 86.5 6.3 M M 25000 -30.8 -23.4 230 56 29 7.0 3.9 29.3 84.7 5.6 M M 24000 -28.7 -19.7 230 52 27 7.6 4.2 28.4 83.1 4.9 M M 23000 -26.2 -15.2 230 47 24 8.3 4.6 27.7 81.9 4.5 M M 22000 -23.7 -10.7 225 42 22 8.3 4.6 27.2 81.0 4.1 M M 21000 -21.2 -6.2 220 38 20 8.2 4.5 26.8 80.2 3.8 M M 20000 -18.7 -1.7 225 38 20 8.1 4.5 26.1 79.0 3.3 M M 19500 -17.5 0.5 230 38 20 8.1 4.5 25.9 78.5 3.1 M M 19000 -16.3 2.7 230 39 20 8.1 4.5 25.6 78.1 2.9 M M 18500 -15.1 4.8 235 39 20 7.6 4.2 25.4 77.7 2.7 M M 18000 -14.0 6.8 235 39 20 7.1 3.9 24.9 76.8 2.3 M M 17500 -13.0 8.6 240 39 20 7.1 3.9 24.4 76.0 1.9 M M 17000 -12.0 10.4 240 39 20 6.3 3.5 23.9 75.0 1.5 M M 16500 -11.0 12.2 240 38 19 6.4 3.5 23.3 74.0 1.0 M M 16000 -10.1 13.8 240 36 19 5.2 2.8 22.7 72.9 0.4 M M 15500 -9.4 15.1 235 33 17 4.7 2.6 21.9 71.4 -0.4 845 4.3 15000 -8.4 16.9 230 28 14 4.5 2.5 20.6 69.1 -1.5 792 4.0 14500 -7.7 18.1 220 24 12 4.5 2.4 19.7 67.5 -2.4 758 3.8 14000 -7.0 19.4 215 21 11 7.0 3.8 19.0 66.1 -3.1 720 3.7 13500 -5.8 21.6 225 21 11 7.9 4.3 18.7 65.6 -3.4 671 3.4 13000 -4.6 23.7 235 22 11 7.8 4.3 18.4 65.1 -3.7 621 3.2 12500 -3.5 25.7 235 22 11 7.7 4.2 18.0 64.5 -4.1 573 2.9 12000 -2.4 27.7 240 22 11 7.2 4.0 17.7 63.9 -4.4 525 2.7 11500 -1.5 29.3 250 24 13 6.5 3.6 17.2 63.0 -5.0 481 2.4 11000 -0.5 31.1 255 27 14 6.2 3.4 16.7 62.1 -5.5 438 2.2 10500 0.3 32.5 255 25 13 5.6 3.1 16.1 61.0 -6.2 398 2.0 10250 0.8 33.4 255 23 12 7.3 4.0 15.8 60.4 -6.5 378 1.9 10000 1.4 34.5 255 22 11 9.1 5.0 15.7 60.3 -6.6 352 1.8 9750 2.0 35.6 255 20 10 8.6 4.7 15.6 60.1 -6.7 325 1.7 9500 2.7 36.9 255 19 10 8.9 4.9 15.5 60.0 -6.8 298 1.5 9250 3.3 37.9 255 17 9 8.3 4.6 15.5 59.9 -6.9 272 1.4 9000 3.9 39.0 255 15 8 8.3 4.6 15.3 59.6 -7.1 246 1.3 8750 4.6 40.3 255 14 7 9.3 5.1 15.3 59.5 -7.2 219 1.1 8500 5.3 41.5 250 12 6 9.4 5.1 15.2 59.4 -7.2 191 1.0 8250 6.0 42.8 250 11 6 9.5 5.2 15.2 59.4 -7.3 163 0.8 8000 6.7 44.1 250 9 5 9.6 5.3 15.2 59.4 -7.3 134 0.7 7750 7.4 45.3 245 8 4 9.3 5.1 15.2 59.3 -7.3 105 0.5 7500 8.1 46.6 245 7 4 9.0 4.9 15.1 59.2 -7.4 78 0.4 7250 8.7 47.7 240 6 3 9.5 5.2 15.1 59.2 -7.5 50 0.3 7000 9.5 49.1 235 6 3 9.9 5.4 15.1 59.2 -7.5 20 0.1 6750 10.2 50.4 235 5 2 9.9 5.4 15.1 59.2 -7.5 M M 6500 10.9 51.6 230 4 2 8.0 4.4 15.1 59.1 -7.5 M M 6250 11.3 52.3 220 3 2 2.5 1.4 14.7 58.5 -7.9 M M 6000 11.4 52.5 215 3 2 0.7 0.4 14.1 57.3 -8.6 M M 5750 11.4 52.5 205 3 2 -0.5 -0.3 13.4 56.1 -9.3 M M 5500 10.9 51.6 205 5 3 -17.8 -9.8 12.1 53.8 -10.6 M M * * * * * * Numerical weather prediction model forecast data valid * * * * * * 04/13/2026 at 0900 MDT | 04/13/2026 at 1200 MDT | CAPE... 0.0 LI... +6.2 | CAPE... 0.0 LI... +4.6 CINH... -0.2 K Index... -12.2 | CINH... 0.0 K Index... +1.2 | Height Temperature Wnd WndSpd Lapse Rate | Temperature Wnd WndSpd Lapse Rate ft MSL deg C deg F Dir kt m/s C/km F/kft | deg C deg F Dir kt m/s C/km F/kft -------------------------------------------------------------------------------- 50000 -58.0 -72.4 235 41 21 -2.6 -1.4 | -58.6 -73.5 240 44 23 -1.9 -1.0 45000 -62.1 -79.8 240 81 42 -1.5 -0.8 | -61.5 -78.7 240 78 40 -0.9 -0.5 40000 -62.3 -80.1 235 76 39 -0.1 -0.1 | -61.5 -78.7 235 77 40 0.0 0.0 38000 -59.9 -75.8 235 75 39 7.2 4.0 | -59.3 -74.7 235 77 40 6.8 3.7 36000 -55.6 -68.1 235 74 38 7.2 4.0 | -55.2 -67.4 235 78 40 6.8 3.7 34000 -51.2 -60.2 230 73 38 7.3 4.0 | -51.1 -60.0 230 78 40 7.6 4.2 32000 -46.8 -52.2 230 70 36 7.3 4.0 | -45.9 -50.6 230 74 38 7.6 4.2 30000 -41.9 -43.4 230 67 34 7.2 4.0 | -41.6 -42.9 230 71 36 6.6 3.6 29000 -39.8 -39.6 230 66 34 7.2 4.0 | -39.6 -39.3 230 69 36 6.5 3.6 28000 -37.6 -35.7 225 65 33 7.2 4.0 | -37.7 -35.9 230 67 35 6.5 3.6 27000 -35.4 -31.7 225 63 33 7.5 4.1 | -35.7 -32.3 230 66 34 7.5 4.1 26000 -33.2 -27.8 230 61 31 7.6 4.2 | -33.3 -27.9 230 62 32 7.9 4.4 25000 -30.9 -23.6 230 59 30 7.6 4.2 | -30.9 -23.6 230 58 30 7.9 4.4 24000 -28.6 -19.5 230 56 29 7.5 4.1 | -28.5 -19.3 230 55 28 7.6 4.1 23000 -26.4 -15.5 230 53 27 7.3 4.0 | -26.5 -15.7 235 53 27 6.8 3.8 22000 -24.2 -11.6 230 49 25 7.3 4.0 | -24.4 -11.9 235 52 27 6.8 3.8 21000 -22.0 -7.6 235 46 24 7.6 4.2 | -22.3 -8.1 240 52 27 7.2 4.0 20000 -19.7 -3.5 235 43 22 7.6 4.2 | -20.1 -4.2 240 49 25 7.4 4.0 19500 -18.5 -1.3 235 42 21 7.6 4.2 | -19.0 -2.2 240 47 24 7.4 4.0 19000 -17.4 0.7 235 40 21 7.6 4.2 | -17.9 -0.2 240 46 24 7.4 4.0 18500 -16.2 2.8 235 39 20 7.7 4.2 | -16.8 1.8 245 45 23 7.2 4.0 18000 -15.1 4.8 235 38 19 7.7 4.2 | -15.8 3.6 245 43 22 7.1 3.9 17500 -14.0 6.8 235 36 19 7.7 4.2 | -14.7 5.5 245 42 21 7.2 3.9 17000 -12.3 9.9 235 35 18 7.4 4.1 | -13.2 8.2 245 38 20 6.6 3.6 16500 -11.2 11.8 235 34 18 7.4 4.0 | -12.2 10.0 245 36 18 6.5 3.6 16000 -10.1 13.8 240 34 18 7.2 3.9 | -11.3 11.7 245 32 17 6.4 3.5 15500 -9.0 15.8 240 34 18 7.2 4.0 | -10.3 13.5 245 29 15 6.4 3.5 15000 -8.0 17.6 240 34 18 6.5 3.5 | -9.4 15.1 245 27 14 6.8 3.7 14500 -7.0 19.4 245 34 18 6.5 3.5 | -8.4 16.9 245 25 13 6.8 3.7 14000 -6.1 21.0 245 33 17 5.8 3.2 | -7.4 18.7 245 23 12 6.6 3.6 13500 -5.3 22.5 250 32 17 5.6 3.1 | -6.4 20.5 250 23 12 6.5 3.6 13000 -4.4 24.1 250 31 16 4.8 2.7 | -5.5 22.1 250 23 12 6.5 3.6 12500 -3.8 25.2 255 29 15 4.3 2.4 | -4.5 23.9 250 19 10 6.6 3.6 12000 -3.2 26.2 255 26 13 5.2 2.8 | -3.6 25.5 245 16 8 7.5 4.1 11500 -2.3 27.9 260 25 13 6.3 3.5 | -2.3 27.9 245 13 7 8.4 4.6 11000 -1.4 29.5 260 24 12 5.7 3.1 | -1.1 30.0 240 11 5 7.6 4.2 10500 -0.7 30.7 265 21 11 4.2 2.3 | -0.1 31.8 240 8 4 5.8 3.2 10250 -0.3 31.5 265 20 10 7.7 4.2 | 0.5 32.9 235 7 4 11.2 6.1 10000 0.4 32.7 265 18 9 9.8 5.4 | 1.5 34.7 240 7 4 13.1 7.2 9750 1.0 33.8 265 17 9 7.6 4.2 | 2.3 36.1 240 7 4 8.9 4.9 9500 1.6 34.9 265 15 8 8.5 4.6 | 3.0 37.4 240 6 3 10.4 5.7 9250 2.2 36.0 265 14 7 7.3 4.0 | 3.7 38.7 240 6 3 8.5 4.7 9000 2.7 36.9 270 12 6 7.5 4.1 | 4.3 39.7 240 4 2 8.5 4.7 8750 3.3 37.9 270 11 5 9.4 5.1 | 5.0 41.0 240 4 2 10.5 5.7 8500 4.0 39.2 270 9 5 9.8 5.4 | 5.8 42.4 240 5 2 10.6 5.8 8250 4.7 40.5 270 8 4 9.4 5.2 | 6.6 43.9 245 5 3 9.9 5.4 8000 5.4 41.7 270 7 4 9.0 4.9 | 7.3 45.1 240 4 2 9.3 5.1 7750 6.1 43.0 270 7 3 9.4 5.2 | 8.0 46.4 240 3 2 10.2 5.6 7500 6.8 44.2 265 6 3 9.9 5.4 | 8.8 47.8 245 4 2 11.0 6.1 7250 7.5 45.5 265 6 3 8.9 4.9 | 9.6 49.3 245 4 2 9.1 5.0 7000 8.2 46.8 265 5 3 7.9 4.3 | 10.2 50.4 245 3 2 7.4 4.1 6750 8.8 47.8 265 5 3 10.5 5.7 | 10.9 51.6 245 3 1 11.2 6.1 6500 9.7 49.5 260 5 2 11.5 6.3 | 11.8 53.2 250 4 2 12.7 7.0 6250 10.4 50.7 255 4 2 9.4 5.1 | 12.7 54.9 250 4 2 10.7 5.9 6000 11.1 52.0 255 4 2 9.1 5.0 | 13.5 56.3 250 3 1 10.4 5.7 5750 11.8 53.2 250 4 2 8.5 4.7 | 14.2 57.6 250 2 1 10.5 5.8 5500 12.4 54.3 245 4 2 11.0 6.0 | 15.2 59.4 255 3 2 18.8 10.3 04/13/2026 at 1500 MDT | 04/13/2026 at 1800 MDT | CAPE... 0.0 LI... +2.0 | CAPE... 0.0 LI... +0.3 CINH... 0.0 K Index... +13.0 | CINH... 0.0 K Index... +14.7 | Height Temperature Wnd WndSpd Lapse Rate | Temperature Wnd WndSpd Lapse Rate ft MSL deg C deg F Dir kt m/s C/km F/kft | deg C deg F Dir kt m/s C/km F/kft -------------------------------------------------------------------------------- 50000 -58.3 -72.9 245 44 23 -1.1 -0.6 | -58.5 -73.3 235 52 27 0.0 0.0 45000 -60.1 -76.2 240 74 38 -0.6 -0.3 | -58.5 -73.3 240 69 36 -0.4 -0.2 40000 -60.5 -76.9 235 79 41 -0.3 -0.2 | -59.6 -75.3 235 80 41 -0.7 -0.4 38000 -58.7 -73.7 235 81 42 5.8 3.2 | -58.3 -72.9 235 83 43 4.9 2.7 36000 -55.2 -67.4 235 82 42 5.9 3.2 | -55.3 -67.5 235 85 44 4.9 2.7 34000 -51.5 -60.7 235 83 43 8.3 4.5 | -52.1 -61.8 235 86 44 8.4 4.6 32000 -46.6 -51.9 235 80 41 8.1 4.5 | -47.2 -53.0 235 81 42 8.1 4.5 30000 -41.5 -42.7 235 75 39 6.2 3.4 | -42.0 -43.6 235 74 38 6.2 3.4 29000 -39.6 -39.3 235 72 37 6.2 3.4 | -40.2 -40.4 235 69 36 6.1 3.4 28000 -37.8 -36.0 235 69 35 6.2 3.4 | -38.4 -37.1 235 65 33 6.1 3.4 27000 -35.9 -32.6 235 66 34 7.4 4.1 | -36.5 -33.7 235 60 31 7.3 4.0 26000 -33.5 -28.3 230 61 31 8.0 4.4 | -34.1 -29.4 230 57 29 8.0 4.4 25000 -31.1 -24.0 225 56 29 8.0 4.4 | -31.7 -25.1 230 53 27 8.0 4.4 24000 -28.7 -19.7 220 52 27 7.6 4.2 | -29.3 -20.7 225 49 25 7.4 4.1 23000 -26.6 -15.9 225 50 26 6.8 3.7 | -27.5 -17.5 235 48 25 6.0 3.3 22000 -24.6 -12.3 235 49 25 6.8 3.7 | -25.7 -14.3 240 47 24 6.0 3.3 21000 -22.5 -8.5 240 49 25 6.6 3.6 | -23.9 -11.0 245 46 24 6.7 3.7 20000 -20.6 -5.1 245 47 24 6.5 3.6 | -21.8 -7.2 245 39 20 7.0 3.9 19500 -19.6 -3.3 245 46 24 6.5 3.6 | -20.8 -5.4 240 35 18 7.1 3.9 19000 -18.6 -1.5 245 45 23 6.6 3.6 | -19.7 -3.5 240 31 16 7.2 3.9 18500 -17.7 0.1 245 44 22 6.7 3.7 | -18.7 -1.7 235 28 14 8.1 4.4 18000 -16.7 1.9 245 41 21 6.9 3.8 | -17.4 0.7 235 25 13 8.9 4.9 17500 -15.6 3.9 245 38 20 7.0 3.8 | -16.0 3.2 230 23 12 9.0 4.9 17000 -14.7 5.5 245 35 18 6.7 3.7 | -14.7 5.5 230 21 11 9.0 4.9 16500 -13.7 7.3 240 31 16 6.7 3.7 | -13.4 7.9 225 20 10 9.0 4.9 16000 -12.7 9.1 240 28 15 7.7 4.2 | -12.0 10.4 220 19 10 9.0 4.9 15500 -10.9 12.4 235 24 13 7.9 4.3 | -10.0 14.0 220 19 10 9.0 4.9 15000 -9.6 14.7 230 22 12 9.2 5.0 | -8.7 16.3 215 18 9 9.3 5.1 14500 -8.3 17.1 225 21 11 9.2 5.0 | -7.3 18.9 210 18 9 9.3 5.1 14000 -6.9 19.6 220 19 10 8.9 4.9 | -5.9 21.4 210 17 9 9.1 5.0 13500 -5.6 21.9 215 17 9 8.8 4.8 | -4.5 23.9 205 17 8 9.0 5.0 13000 -4.3 24.3 210 16 8 8.9 4.9 | -3.2 26.2 205 16 8 9.0 4.9 12500 -2.9 26.8 205 14 7 8.9 4.9 | -1.8 28.8 205 15 8 9.0 4.9 12000 -1.6 29.1 200 12 6 8.6 4.7 | -0.5 31.1 200 14 7 8.9 4.9 11500 -0.4 31.3 200 10 5 8.3 4.6 | 0.9 33.6 195 11 6 8.8 4.9 11000 0.9 33.6 195 8 4 8.0 4.4 | 2.2 36.0 190 9 5 8.0 4.4 10500 2.0 35.6 190 6 3 7.1 3.9 | 3.3 37.9 190 7 3 6.7 3.7 10250 2.6 36.7 190 5 3 10.5 5.7 | 3.8 38.8 185 5 3 9.3 5.1 10000 3.5 38.3 185 4 2 11.5 6.3 | 4.6 40.3 180 3 2 10.5 5.7 9750 4.2 39.6 185 4 2 9.0 4.9 | 5.3 41.5 190 2 1 8.7 4.8 9500 5.0 41.0 185 4 2 9.6 5.3 | 6.0 42.8 215 1 0 9.2 5.0 9250 5.7 42.3 185 3 2 9.7 5.3 | 6.6 43.9 315 1 0 9.0 4.9 9000 6.4 43.5 190 3 2 9.9 5.4 | 7.3 45.1 335 2 1 9.4 5.2 8750 7.1 44.8 190 3 2 9.9 5.5 | 8.0 46.4 335 2 1 9.8 5.4 8500 7.9 46.2 190 3 1 9.6 5.3 | 8.8 47.8 335 3 1 9.6 5.3 8250 8.6 47.5 195 3 1 10.8 5.9 | 9.5 49.1 335 3 2 10.1 5.6 8000 9.5 49.1 195 2 1 11.4 6.2 | 10.3 50.5 335 4 2 10.5 5.7 7750 10.3 50.5 200 2 1 9.6 5.3 | 11.0 51.8 330 4 2 9.8 5.3 7500 10.9 51.6 200 2 1 8.4 4.6 | 11.7 53.1 330 4 2 9.4 5.2 7250 11.6 52.9 205 2 1 10.2 5.6 | 12.4 54.3 330 4 2 9.7 5.3 7000 12.4 54.3 210 2 1 11.7 6.4 | 13.2 55.8 330 5 2 10.0 5.5 6750 13.3 55.9 215 2 1 9.7 5.3 | 13.9 57.0 330 5 2 9.7 5.3 6500 13.9 57.0 220 2 1 9.2 5.0 | 14.7 58.5 330 5 3 9.7 5.3 6250 14.7 58.5 225 2 1 10.9 6.0 | 15.4 59.7 330 5 3 10.3 5.7 6000 15.6 60.1 230 2 1 12.2 6.7 | 16.2 61.2 330 5 3 11.0 6.0 5750 16.4 61.5 235 2 1 9.9 5.4 | 17.0 62.6 330 5 3 9.6 5.3 5500 17.2 63.0 245 2 1 14.7 8.1 | 17.7 63.9 325 6 3 10.9 6.0 ________________________________________________________________________________ This product is issued twice per day, once by approximately 0630 MST/0730 MDT (1330 UTC) and again by approximately 1830 MST/1930 MDT (0130 UTC). It is not continuously monitored nor updated after its initial issuance. The information contained herein is based on rawinsonde observation and/or numerical weather prediction model data taken near the old Stapleton Airport site in Denver, Colorado at North Latitude: 39 deg 46 min 5.016 sec West Longitude: 104 deg 52 min 9.984 sec Elevation: 5285 feet (1611 meters) and may not be representative of other areas along the Front Range of the Colorado Rocky Mountains. Note that some elevations in numerical weather prediction models differ from actual station elevations, which can lead to data which appear to be below ground. Erroneous data such as these should not be used. The content and format of this report as well as the issuance times are subject to change without prior notice. Comments and suggestions are welcome and should be directed to one of the addresses or phone numbers shown at the bottom of this page. To expedite a response to comments, be sure to mention your interest in the soaring forecast. DEFINITIONS: CAPE (Convective Available Potential Energy) - An integrated measure of the energy available for convective development, also known as the positive area on a thermodynamic diagram. Units are Joules per kilogram. Larger values are indicative of greater instability and the possibility of stronger convective activity, including thunderstorms. Values around or greater than 1000 suggest the possibility of severe weather should convective activity develop. CINH (Convective Inhibition) - An integrated measure of the amount of energy needed to initiate convective activity, also known as the negative area on a thermodynamic diagram. Units are Joules per kilogram. The more negative this number, the more energy is required to initiate convection. This inhibitive energy can be overcome through surface heating, cooling aloft, lifting mechanisms (orographic, frontal, gravity waves, etc.) Convective Condensation Level - The height to which an air parcel possessing the average saturation mixing ratio in the lowest 4000 feet of the airmass, if heated sufficiently from below, will rise dry adiabatically until it just becomes saturated. It estimates the base of cumulus clouds that are produced by surface heating only. Convection Temperature (ConvectionT) - The surface temperature required to make the airmass dry adiabatic up to the given level. It can be considered a "trigger temperature" for that level. Freezing Level - The height where the temperature is zero degrees Celsius. Height of Stable Layer - The height (between 12,000 and 18,000 feet above mean sea level) where the smallest lapse rate exists. The location and existence of this feature is important in the generation of mountain waves. K Index - A measure of stability which combines the temperature difference between approximately 5,000 and 18,000 feet above the surface, the amount of moisture at approximately 5,000 feet above the surface, and a measure of the dryness at approximately 10,000 feet above the surface. Larger positive numbers indicate more instability and a greater likelihood of thunderstorm development. One interpretation of K index values regarding soaring in the western United States is given in WMO Technical Note 158 and is reproduced in the following table: below -10 no or weak thermals -10 to 5 dry thermals or 1/8 cumulus with moderate thermals 5 to 15 good soaring conditions 15 to 20 good soaring conditions with occasional showers 20 to 30 excellent soaring conditions, but increasing probability of showers and thunderstorms above 30 more than 60 percent probability of thunderstorms Lapse Rate - The change with height of the temperature. Negative values indicate inversions. Lifted Condensation Level - The height to which an air parcel possessing the average dew point in the lowest 4000 feet of the airmass and the forecast maximum temperature must be lifted dry adiabatically to attain saturation. Lifted Index (LI) - The difference between the environmental temperature at a level approximately 18,000 feet above the surface and the temperature of an air parcel lifted dry adiabatically from the surface to its lifted condensation level and then pseudoadiabatically thereafter to this same level. The parcel's initial temperature is the forecast maximum temperature and its dew point is the average dew point in the lowest 4000 feet of the airmass. Negative values are indicative of instability with positive values showing stable conditions. Lift Rate - An experimental estimate of the strength of thermals. It is computed the same way as the maximum rate of lift but uses the actual level rather than the maximum height of thermals in the calculation. Also, none of the empirical adjustments based on cloudiness and K-index are applied to these calculations. Maximum Height of Thermals - The height where the dry adiabat through the forecast maximum temperature intersects the environmental temperature. Maximum Rate of Lift - An estimate of the maximum strength of thermals. It is computed from an empirical formula which combines the expected maximum height of thermals with the difference in the environmental temperatures between the maximum height of thermals and the temperature 4,000 feet above the ground. After this computation, further empirical adjustments are made based on the value of the K-index and the amount and opacity of middle and high level cloudiness expected between the time of trigger temperature and the time of overdevelopment. Middle/High Clouds - The amount and opacity of middle (altostratus, altocumulus) or high (cirrus, cirrostratus, cirrocumulus) clouds. Broken means that between 60% and 90% of the sky is covered by the cloud, with overcast conditions occurring when more than 90% of the sky is covered by the cloud. Thin implies that the clouds are predominantly transparent, meaning that some sunlight is reaching the ground, in contrast to opaque which suggests that little sunlight is reaching the ground. Potential Height of Wave - The minimum of the following two heights: 1. Level above the height of stable layer (or 14,000 feet if none exists) where the wind direction changes by 30 degrees or more 2. Level above the height of stable layer (or 14,000 feet if none exists) where the wind speed no longer increases with height PVA/NVA - Positive vorticity advection (PVA)/negative vorticity advection (NVA) on the 500 millibar isobaric surface (approximately 18,000 feet above mean sea level). Weak PVA has been shown to assist in mountain wave soaring. Soaring Window - The time between the time the trigger temperature is reached and the time of overdevelopment. Thermal Index - The difference between the environmental temperature and the temperature at a particular level determined by following the dry adiabat through the forecast maximum temperature up to that level. Negative values are indicative of thermal lift. Thermal Soaring Index - An adjective rating (for sailplanes) based on the computed maximum rate of lift, and the wind speed and middle and high cloud cover expected during the soaring window (the time of the trigger temperature and the time of overdevelopment) according to the following: Maximum rate of lift Adjective Rating >= 800 fpm Excellent >= 400 and < 800 fpm Good >= 200 and < 400 fpm Fair < 200 fpm Poor Time of Overdevelopment - The time one or more of the following phenomena, which essentially shut off thermal lift, is expected to occur: 1. formation of broken to overcast convective cloud cover 2. formation of scattered to numerous downbursts 3. initiation of widespread precipitation Time of Trigger Temperature - The time the surface temperature is expected to reach the trigger temperature. Trigger Temperature - The surface temperature required to make the first 4000 feet of the atmosphere dry adiabatic. Wave Soaring Index - An empirical, adjective rating (for sailplanes) which attempts to combine a variety of phenomena important in mountain wave soaring into a single index number. Objective points are assigned to these phenomena: wind speed and direction at 14,000 ft MSL, the static stability in the 12,000-18,000 ft MSL layer, the wind speed gradient above the stable layer, jet stream location and frontal and upper trough movements. 042613  417 UXUS43 KMPX 130000 FZLMPX MPX 0000 RADAT 69099=  232 UXUS42 KTBW 130000 FZLTBW TBW 0000 RADAT 01149=  954 UBUS35 KWBC 130015 PIRUS PWK UUA /OV PWK340001/TM 0010/FLDURD/TP E545/RM LLWS +-15-20KTS SHORT FINAL= PWK UUA /OV PWK340001/TM 0013/FLDURD/TP C700/RM LLWS +-20KTS SHORT FINAL 600FT=  712 UXKA40 PTTP 130000 FZLTTP TTP 0000 RADAT 65164=  591 UXUS43 KDLH 130000 FZLINL INL 0000 RADAT 83092=  362 UBUS35 KWBC 130025 PIRUS ORD UUA /OV ORD/TM 0022/FL010/TP CRJ2/RM LLWS +20 DURC RWY 22L=  430 UBUS35 KWBC 130030 PIRUS DAL UUA /OV DAL310002/TM 0018/FL020/TP B38M/RM LLWS +/-15KT SFC-020 DURD RWY 13R KDAL=  716 UXUS46 KSGX 130001 COR FZLNKX NKX 0000 RADAT 94085=  818 UXUS43 KUNR 130000 FZLUNR UNR 0000 RADAT 43105=  368 UBUS35 KWBC 130035 PIRUS STL UUA /OV STL/TM 0025/FLDURD/TP CRJ7/RM LLWS +/-15 KT DURD RWY 11=  820 UXUS46 KSEW 130001 COR FZLUIL UIL 0000 RADAT 92065=  198 UBUS35 KWBC 130040 PIRUS SUS UUA /OV SUS/TM 0035/FLUNKN/TP P180/RM LLWS +/- 10KTS, GAIN OF 10KTS @500 FT AND A LOSS OF 10KTS @300 FT AGL. DURD RWY 26L=  556 UXAK48 PACD 130001 COR FZLCDB CDB 0000 RADAT 73009=  591 UXHW40 PHTO 130001 COR FZLITO ITO 0000 RADAT 62147=  275 UXUS46 KPQR 130001 COR FZLSLE SLE 0000 RADAT 00063=  223 UXUS45 KABQ 130001 COR FZLABQ ABQ 0000 RADAT 23122=  400 UXAK48 PADQ 130001 COR FZLADQ ADQ 0000 RADAT 58011=  923 UXAK47 PAYA 130001 COR FZLYAK YAK 0000 RADAT 00009=  918 UXAK47 PANT 130001 COR FZLANN ANN 0000 RADAT 56039=  420 UXUS44 KEWX 130001 COR FZLDRT DRT 0000 RADAT 49131=  326 UXAK49 PAFA 130001 COR FZLFAI FAI 0000 RADAT 72018=  659 UXAK48 PAFC 130001 COR FZLANC ANC 0000 RADAT 00008=  559 UXUS43 KDTX 130001 COR FZLDTX DTX 0000 RADAT 99108=