Soaring Guidance
Issued by NWS Denver/Boulder, CO

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000
UXUS97 KBOU 251306
SRGBOU

Soaring Forecast
National Weather Service Denver/Boulder, Colorado
0706 MDT Monday, July 25, 2016

This forecast is for Monday, July 25, 2016:

If the trigger temperature of 87.4 F/30.8 C is reached...then
   Thermal Soaring Index....................... Excellent
   Maximum rate of lift........................ 1449 ft/min (7.4 m/s)
   Maximum height of thermals.................. 19952 ft MSL (14667 ft AGL)

Forecast maximum temperature................... 94.0 F/34.9 C
Time of trigger temperature.................... 1145 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................. 10831 ft MSL (5546 ft AGL)
Thermal soaring outlook for Tuesday 07/26...... Excellent

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....................... 15150 ft MSL (9865 ft AGL)
Wave soaring outlook for Tuesday 07/26......... Poor

Remarks...

Sunrise/Sunset.................... 05:52:55 / 20:19:07 MDT
Total possible sunshine........... 14 hr 26 min 11 sec (866 min 11 sec)
Altitude of sun at 13:06:01 MDT... 69.62 degrees

Upper air data from rawinsonde observation taken on 07/25/2016 at 0600 MDT

Freezing level.................. 16215 ft MSL (10930 ft AGL)
Convective condensation level... 15359 ft MSL (10074 ft AGL)
Lifted condensation level....... 16146 ft MSL (10860 ft AGL)
Lifted index.................... -5.3
K index......................... +20.6

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  -65.9 -86.6   300   22   11   1.7   0.9   81.6 178.8    27.6      M    M
 45000  -59.7 -75.5   260   33   17   4.1   2.2   67.3 153.1    20.6      M    M
 40000  -51.9 -61.4   245   52   27   8.3   4.6   56.9 134.5    15.1      M    M
 38000  -47.6 -53.7   245   48   25   7.7   4.2   54.6 130.4    13.9      M    M
 36000  -42.8 -45.0   250   44   23   9.1   5.0   53.2 127.7    13.2      M    M
 34000  -36.9 -34.4   255   44   23   8.9   4.9   52.1 125.7    12.8      M    M
 32000  -31.8 -25.2   260   44   23   9.0   4.9   51.2 124.1    12.4      M    M
 30000  -27.9 -18.2   265   32   16   6.7   3.7   48.6 119.4    10.7      M    M
 29000  -25.8 -14.4   270   29   15   6.8   3.7   47.5 117.5    10.0      M    M
 28000  -23.6 -10.5   275   26   13   4.1   2.3   46.5 115.7     9.4      M    M
 27000  -22.3  -8.1   285   23   12   6.4   3.5   44.4 111.9     7.9      M    M
 26000  -20.2  -4.4   285   22   12   9.1   5.0   43.4 110.1     7.1      M    M
 25000  -17.8  -0.0   280   24   12   6.4   3.5   42.6 108.7     6.6      M    M
 24000  -16.6   2.1   280   16    8   3.7   2.0   40.5 104.8     4.9      M    M
 23000  -15.1   4.8   305    8    4   8.8   4.8   38.9 102.0     3.7      M    M
 22000  -12.6   9.3   310   10    5   8.4   4.6   38.3 101.0     3.3      M    M
 21000  -10.0  14.0   315   13    7   9.2   5.1   37.9 100.2     2.9      M    M
 20000   -9.7  14.5   320   22   11   3.4   1.9   35.0  94.9     0.3      M    M
 19500   -9.8  14.4   315   21   11   4.0   2.2   33.4  92.1    -1.3   1443  7.3
 19000   -8.4  16.9   310   19   10   9.4   5.2   33.4  92.1    -1.3   1387  7.0
 18500   -7.0  19.4   315   18    9   9.7   5.3   33.4  92.1    -1.3   1329  6.7
 18000   -5.6  21.9   320   18    9   9.7   5.3   33.4  92.2    -1.3   1271  6.5
 17500   -4.1  24.6   320   17    9   9.7   5.3   33.4  92.1    -1.4   1212  6.2
 17000   -2.7  27.1   320   15    8   9.7   5.3   33.4  92.1    -1.4   1154  5.9
 16500   -0.5  31.1   315   13    7   9.7   5.3   33.4  92.1    -1.4   1067  5.4
 16000    1.0  33.8   315   12    6   9.7   5.3   33.4  92.1    -1.4   1009  5.1
 15500    2.4  36.3   305   11    6   9.7   5.3   33.4  92.0    -1.5    951  4.8
 15000    3.8  38.8   290   10    5   9.7   5.3   33.3  92.0    -1.6    892  4.5
 14500    5.3  41.5   280   10    5   9.7   5.3   33.3  91.9    -1.6    834  4.2
 14000    6.7  44.1   270    9    5   9.4   5.2   33.3  91.9    -1.6    776  3.9
 13500    8.0  46.4   250    7    4   8.6   4.7   33.1  91.6    -1.8    723  3.7
 13000    9.3  48.7   215    6    3   8.6   4.7   33.0  91.3    -2.0    670  3.4
 12500   10.5  50.9   200    6    3   8.6   4.7   32.8  91.0    -2.2    618  3.1
 12000   11.8  53.2   185    7    4   8.6   4.7   32.6  90.7    -2.5    566  2.9
 11500   13.0  55.4   185    9    4   8.7   4.8   32.4  90.3    -2.7    514  2.6
 11000   14.3  57.7   185   10    5   8.7   4.8   32.2  90.0    -2.9    462  2.3
 10500   15.5  59.9   185   11    6   8.9   4.9   32.1  89.7    -3.2    409  2.1
 10250   16.2  61.2   180   11    6   9.1   5.0   32.0  89.6    -3.2    382  1.9
 10000   16.8  62.2   175   11    6   9.1   5.0   32.0  89.5    -3.3    355  1.8
  9750   17.5  63.5   190   10    5   9.1   5.0   31.9  89.4    -3.4    327  1.7
  9500   18.2  64.8   200   10    5   9.0   4.9   31.8  89.3    -3.5    300  1.5
  9250   18.8  65.8   215   11    6   9.7   5.3   31.8  89.2    -3.5    273  1.4
  9000   19.5  67.1   225   12    6   7.0   3.9   31.8  89.2    -3.6    245  1.2
  8750   19.7  67.5   230   11    5   0.8   0.5   31.3  88.3    -4.1    231  1.2
  8500   19.6  67.3   230    9    5  -1.0  -0.5   30.5  86.8    -5.0    228  1.2
  8250   19.5  67.1   235    8    4  -0.5  -0.3   29.7  85.4    -5.9    224  1.1
  8000   19.3  66.7   240    7    4  -0.0  -0.0   28.9  84.0    -6.8    221  1.1
  7750   19.1  66.4   225    9    5  -7.8  -4.3   28.0  82.3    -7.8    222  1.1
  7500   18.1  64.6   215   12    6 -13.7  -7.5   26.2  79.2    -9.5    243  1.2
  7250   17.5  63.5   210   15    8  -1.1  -0.6   24.8  76.7   -10.9    255  1.3
  7000   17.7  63.9   205   18    9   3.6   2.0   24.4  75.9   -11.4    241  1.2
  6750   17.5  63.5   210   15    8  -4.2  -2.3   23.6  74.4   -12.4    239  1.2
  6500   17.0  62.6   210   12    6  -2.5  -1.4   22.5  72.5   -13.6    246  1.3
  6250   17.0  62.6   220    9    5   1.0   0.5   21.8  71.2   -14.4    239  1.2
  6000   17.0  62.6   235    6    3  -0.3  -0.2   21.0  69.9   -15.2    231  1.2
  5750   17.0  62.6   230    5    3   1.2   0.7   20.3  68.6   -15.9    224  1.1
  5500   17.0  62.6   215    4    2  -3.5  -1.9   19.6  67.3   -16.7    217  1.1

 * * * * * * Numerical weather prediction model forecast data valid * * * * * *

           07/25/2016 at 0900 MDT          |       07/25/2016 at 1200 MDT
                                           |
CAPE...  +318.6    LI...       -2.3        | CAPE...  +820.4    LI...       -3.2
CINH...  -318.7    K Index... +18.7        | CINH...   -58.0    K Index... +15.9
                                           |
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 -64.5 -84.1  275  12  6   2.2   1.2 | -64.2 -83.6  275  10  5   2.0   1.1
 45000 -59.3 -74.7  270  18  9   5.7   3.2 | -59.2 -74.6  270  15  8   5.6   3.1
 40000 -50.4 -58.7  255  21 11   6.6   3.6 | -50.4 -58.7  255  21 11   6.9   3.8
 38000 -46.4 -51.5  255  21 11   6.6   3.6 | -45.7 -50.3  255  23 12   6.9   3.8
 36000 -41.9 -43.4  255  22 11   7.4   4.1 | -41.5 -42.7  255  24 12   7.4   4.1
 34000 -37.3 -35.1  260  22 11   7.6   4.2 | -37.0 -34.6  255  23 12   7.5   4.1
 32000 -32.8 -27.0  265  22 11   7.9   4.3 | -32.5 -26.5  260  22 11   7.9   4.3
 30000 -28.5 -19.3  265  19 10   7.1   3.9 | -28.4 -19.1  260  19 10   6.8   3.7
 29000 -26.3 -15.3  265  18  9   7.1   3.9 | -26.3 -15.3  265  18  9   6.8   3.7
 28000 -24.3 -11.7  270  16  8   6.0   3.3 | -24.4 -11.9  265  16  8   6.1   3.3
 27000 -22.4  -8.3  270  15  8   6.1   3.4 | -22.5  -8.5  265  15  8   6.1   3.4
 26000 -20.6  -5.1  270  13  7   6.1   3.4 | -20.7  -5.3  265  14  7   6.2   3.4
 25000 -18.8  -1.8  275  12  6   6.0   3.3 | -18.8  -1.8  270  12  6   6.3   3.5
 24000 -17.0   1.4  280  11  6   5.9   3.2 | -16.9   1.6  275  11  6   6.5   3.6
 23000 -15.3   4.5  285  10  5   5.9   3.2 | -15.0   5.0  280  11  6   6.5   3.6
 22000 -13.5   7.7  295   9  5   6.4   3.5 | -13.0   8.6  285  10  5   6.5   3.6
 21000 -11.5  11.3  300   9  5   6.9   3.8 | -11.1  12.0  290  10  5   6.6   3.6
 20000  -9.4  15.1  305   9  5   6.9   3.8 |  -8.6  16.5  295  10  5   6.6   3.6
 19500  -7.9  17.8  310   9  5   7.9   4.3 |  -7.6  18.3  300  10  5   7.9   4.3
 19000  -6.7  19.9  310   9  5   8.3   4.5 |  -6.4  20.5  300  10  5   8.3   4.5
 18500  -5.5  22.1  310   9  5   8.3   4.6 |  -5.1  22.8  300   9  5   8.4   4.6
 18000  -4.2  24.4  310   9  5   9.2   5.1 |  -3.8  25.2  300   9  5   8.9   4.9
 17500  -2.8  27.0  310   8  4   9.2   5.0 |  -2.5  27.5  305   9  5   8.9   4.9
 17000  -1.4  29.5  310   8  4   9.2   5.1 |  -1.2  29.8  305   9  4   9.1   5.0
 16500  -0.1  31.8  310   7  4   9.2   5.1 |   0.2  32.4  300   8  4   9.1   5.0
 16000   1.3  34.3  310   7  4   9.2   5.0 |   1.5  34.7  300   8  4   9.1   5.0
 15500   2.6  36.7  305   6  3   9.2   5.0 |   2.9  37.2  300   7  4   9.1   5.0
 15000   3.9  39.0  305   6  3   9.2   5.1 |   4.2  39.6  300   7  4   9.1   5.0
 14500   5.2  41.4  300   5  3   8.7   4.8 |   5.6  42.1  300   7  3   9.3   5.1
 14000   6.5  43.7  290   4  2   8.8   4.8 |   6.9  44.4  300   6  3   9.3   5.1
 13500   7.8  46.0  280   4  2   8.9   4.9 |   8.3  46.9  295   6  3   9.0   5.0
 13000   9.1  48.4  265   4  2   9.0   4.9 |   9.6  49.3  290   5  3   9.1   5.0
 12500  10.4  50.7  250   4  2   8.6   4.7 |  10.9  51.6  285   5  2   8.8   4.8
 12000  11.7  53.1  235   4  2   8.5   4.7 |  12.2  54.0  275   4  2   8.8   4.8
 11500  12.9  55.2  225   4  2   8.5   4.6 |  13.4  56.1  270   4  2   8.5   4.6
 11000  14.1  57.4  220   4  2   8.6   4.7 |  14.6  58.3  255   4  2   8.3   4.6
 10500  15.3  59.5  215   4  2  10.5   5.8 |  15.8  60.4  240   3  2  10.0   5.5
 10250  16.2  61.2  215   4  2   9.4   5.2 |  16.5  61.7  235   3  2   9.0   4.9
 10000  16.6  61.9  215   4  2   6.1   3.3 |  17.0  62.6  225   3  2   6.3   3.4
  9750  17.1  62.8  215   4  2   7.0   3.8 |  17.4  63.3  220   3  1   7.2   3.9
  9500  17.6  63.7  215   3  2   6.9   3.8 |  17.9  64.2  210   3  1   6.5   3.6
  9250  18.1  64.6  215   3  2   7.0   3.9 |  18.3  64.9  200   2  1   6.6   3.6
  9000  18.6  65.5  220   3  2   6.4   3.5 |  18.8  65.8  190   2  1   7.7   4.2
  8750  19.0  66.2  220   3  2   6.2   3.4 |  19.3  66.7  175   2  1   8.1   4.5
  8500  19.3  66.7  220   3  1   4.2   2.3 |  19.9  67.8  165   2  1   7.6   4.2
  8250  19.5  67.1  225   2  1   2.9   1.6 |  20.4  68.7  150   2  1   7.7   4.2
  8000  19.7  67.5  230   2  1   2.4   1.3 |  20.9  69.6  135   2  1   6.7   3.7
  7750  19.7  67.5  225   2  1   0.2   0.1 |  21.2  70.2  120   2  1   6.4   3.5
  7500  19.6  67.3  220   1  1  -1.8  -1.0 |  21.8  71.2  115   2  1   8.7   4.8
  7250  19.3  66.7  215   1  0  -2.5  -1.4 |  22.4  72.3  105   2  1   9.9   5.4
  7000  19.1  66.4  000   0  0  -2.4  -1.3 |  23.1  73.6  095   2  1   8.7   4.8
  6750  18.9  66.0  000   0  0   1.6   0.9 |  23.7  74.7  095   2  1   8.9   4.9
  6500  19.2  66.6  000   0  0   5.1   2.8 |  24.4  75.9  095   2  1  10.4   5.7
  6250  19.5  67.1  080   1  0   5.6   3.1 |  25.2  77.4  095   2  1  10.7   5.9
  6000  19.8  67.6  065   1  0   2.6   1.4 |  26.0  78.8  090   2  1  10.4   5.7
  5750  20.0  68.0  050   1  1   8.6   4.7 |  27.0  80.6  080   2  1  17.1   9.4
  5500  21.4  70.5  050   1  1  27.7  15.2 |  28.7  83.7  075   2  1  28.6  15.7

           07/25/2016 at 1500 MDT          |       07/25/2016 at 1800 MDT
                                           |
CAPE...  +664.2    LI...       -1.5        | CAPE...  +508.3    LI...       -2.6
CINH...    -8.3    K Index... +25.6        | CINH...    -7.0    K Index... +30.7
                                           |
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 -64.1 -83.4  265  11  6   2.2   1.2 | -64.1 -83.4  260  12  6   2.0   1.1
 45000 -59.0 -74.2  260  15  8   5.7   3.1 | -59.1 -74.4  250  17  9   5.9   3.2
 40000 -49.7 -57.5  250  21 11   6.8   3.7 | -49.6 -57.3  245  21 11   6.7   3.7
 38000 -45.7 -50.3  250  23 12   6.8   3.7 | -45.6 -50.1  250  23 12   6.7   3.7
 36000 -41.6 -42.9  250  24 13   7.2   4.0 | -41.6 -42.9  250  25 13   7.3   4.0
 34000 -37.1 -34.8  255  23 12   7.5   4.1 | -37.0 -34.6  250  24 12   7.7   4.2
 32000 -32.6 -26.7  255  22 11   8.1   4.4 | -32.4 -26.3  255  23 12   8.3   4.6
 30000 -28.0 -18.4  260  19 10   6.8   3.7 | -27.5 -17.5  255  22 11   7.2   4.0
 29000 -26.0 -14.8  260  18  9   6.8   3.7 | -25.4 -13.7  260  21 11   7.2   3.9
 28000 -24.0 -11.2  260  17  9   6.2   3.4 | -23.4 -10.1  260  20 10   5.7   3.1
 27000 -22.2  -8.0  265  16  8   6.2   3.4 | -21.7  -7.1  265  18  9   5.7   3.1
 26000 -20.3  -4.5  265  15  8   6.2   3.4 | -20.0  -4.0  275  17  9   5.7   3.2
 25000 -18.5  -1.3  270  14  7   6.3   3.5 | -18.3  -0.9  280  16  8   6.0   3.3
 24000 -16.6   2.1  275  14  7   6.3   3.5 | -16.6   2.1  290  15  8   6.1   3.4
 23000 -14.8   5.4  280  14  7   6.3   3.5 | -14.8   5.4  295  14  7   6.1   3.4
 22000 -12.9   8.8  280  14  7   7.0   3.8 | -13.0   8.6  305  14  7   7.3   4.0
 21000 -10.8  12.6  285  13  7   7.2   3.9 | -10.8  12.6  310  12  6   7.6   4.2
 20000  -8.7  16.3  290  12  6   7.2   4.0 |  -8.6  16.5  315  11  6   7.6   4.2
 19500  -7.7  18.1  295  12  6   7.6   4.2 |  -7.5  18.5  315  10  5   7.7   4.2
 19000  -6.5  20.3  295  11  6   8.5   4.7 |  -6.3  20.7  320  10  5   8.1   4.4
 18500  -5.3  22.5  295  10  5   8.4   4.6 |  -5.1  22.8  320   9  5   8.1   4.4
 18000  -4.0  24.8  300   9  5   8.9   4.9 |  -3.9  25.0  320   8  4   8.7   4.8
 17500  -2.7  27.1  300   9  4   9.0   4.9 |  -2.6  27.3  320   7  4   8.8   4.8
 17000  -1.3  29.7  300   8  4   9.0   5.0 |  -1.3  29.7  325   7  3   8.8   4.8
 16500   0.7  33.3  300   7  3   9.0   5.0 |  -0.0  32.0  325   6  3   8.7   4.8
 16000   2.0  35.6  300   6  3   9.1   5.0 |   1.9  35.4  325   4  2   8.9   4.9
 15500   3.3  37.9  300   5  3   9.2   5.1 |   3.2  37.8  320   3  2   9.1   5.0
 15000   4.7  40.5  300   4  2   9.3   5.1 |   4.5  40.1  315   2  1   9.1   5.0
 14500   6.1  43.0  300   3  2   9.3   5.1 |   5.9  42.6  300   1  1   9.6   5.3
 14000   7.5  45.5  300   3  1   9.3   5.1 |   7.3  45.1  265   1  0   9.6   5.3
 13500   8.9  48.0  300   2  1   9.5   5.2 |   8.7  47.7  215   1  0   9.7   5.3
 13000  10.3  50.5  295   1  1   9.5   5.2 |  10.1  50.2  185   1  1   9.8   5.4
 12500  11.7  53.1  295   1  0   9.5   5.2 |  11.5  52.7  175   2  1   9.6   5.3
 12000  13.1  55.6  000   0  0   9.5   5.2 |  12.9  55.2  170   2  1   9.6   5.3
 11500  14.5  58.1  000   0  0   9.4   5.2 |  14.4  57.9  165   2  1   9.7   5.3
 11000  15.8  60.4  140   1  0   9.4   5.2 |  15.8  60.4  160   3  1   9.7   5.3
 10500  17.2  63.0  140   1  1  10.4   5.7 |  17.2  63.0  160   3  2  10.3   5.7
 10250  17.9  64.2  130   1  1  10.1   5.5 |  18.0  64.4  160   3  2  10.2   5.6
 10000  18.6  65.5  130   1  1   9.0   4.9 |  18.7  65.7  160   3  2   9.3   5.1
  9750  19.2  66.6  130   2  1   9.2   5.1 |  19.4  66.9  160   3  2   9.5   5.2
  9500  19.9  67.8  130   2  1   9.8   5.4 |  20.1  68.2  160   4  2   9.7   5.3
  9250  20.6  69.1  125   1  1  10.1   5.6 |  20.9  69.6  160   4  2   9.9   5.4
  9000  21.3  70.3  125   2  1   9.7   5.3 |  21.6  70.9  160   4  2   9.7   5.3
  8750  22.0  71.6  125   2  1   9.7   5.3 |  22.3  72.1  155   4  2   9.6   5.2
  8500  22.7  72.9  125   2  1  10.5   5.8 |  23.1  73.6  155   4  2  10.3   5.6
  8250  23.6  74.5  120   2  1  11.5   6.3 |  23.8  74.8  155   4  2  11.1   6.1
  8000  24.4  75.9  115   2  1   9.5   5.2 |  24.6  76.3  155   4  2   9.7   5.3
  7750  25.0  77.0  120   2  1   8.3   4.6 |  25.3  77.5  155   4  2   8.8   4.8
  7500  25.7  78.3  120   2  1  10.3   5.7 |  26.0  78.8  155   4  2  10.2   5.6
  7250  26.5  79.7  115   2  1  11.7   6.4 |  26.8  80.2  155   4  2  11.4   6.2
  7000  27.3  81.1  115   2  1   9.9   5.4 |  27.6  81.7  155   4  2   9.8   5.4
  6750  28.0  82.4  115   2  1   8.4   4.6 |  28.3  82.9  155   4  2   8.1   4.5
  6500  28.7  83.7  115   2  1  10.1   5.5 |  28.9  84.0  155   4  2   9.6   5.3
  6250  29.5  85.1  115   2  1  11.8   6.5 |  29.7  85.5  155   4  2  11.0   6.0
  6000  30.3  86.5  110   2  1   8.7   4.8 |  30.5  86.9  155   4  2   9.4   5.2
  5750  31.0  87.8  115   2  1  14.5   7.9 |  31.2  88.2  155   4  2  11.5   6.3
  5500  32.7  90.9  110   2  1  32.7  18.0 |  32.3  90.1  150   4  2  19.6  10.7
________________________________________________________________________________

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


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