Soaring Guidance
Issued by NWS Denver/Boulder, CO

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UXUS97 KBOU 171316
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Soaring Forecast
National Weather Service Denver/Boulder, Colorado
0715 MDT Wednesday, July 17, 2024

This forecast is for Wednesday, July 17, 2024:

If the trigger temperature of 79.7 F/26.5 C is reached...then
   Thermal Soaring Index....................... Good
   Maximum rate of lift........................ 776 ft/min (3.9 m/s)
   Maximum height of thermals.................. 16015 ft MSL (10681 ft AGL)

Forecast maximum temperature................... 86.0 F/30.5 C
Time of trigger temperature.................... 1000 MDT
Time of overdevelopment........................ 1400 MDT
Middle/high clouds during soaring window....... Broken/overcast opaque middle
Surface winds during soaring window............ 20 mph or less
Height of the -3 thermal index................. 10058 ft MSL (4724 ft AGL)
Thermal soaring outlook for Thursday 07/18..... Good

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)................ Weak PVA
Potential height of wave....................... 16182 ft MSL (10848 ft AGL)
Wave soaring outlook for Thursday 07/18........ Poor

Remarks...

Sunrise/Sunset.................... 05:46:16 / 20:25:12 MDT
Total possible sunshine........... 14 hr 38 min 56 sec (878 min 56 sec)
Altitude of sun at 13:05:44 MDT... 71.20 degrees

Upper air data from numerical model forecast valid on 07/17/2024 at 0600 MDT

Freezing level.................. 15260 ft MSL (9926 ft AGL)
Convective condensation level... 14972 ft MSL (9638 ft AGL)
Lifted condensation level....... 15203 ft MSL (9869 ft AGL)
Lifted index.................... -3.2
K index......................... +26.4

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  -62.6 -80.7   295   20   10   2.4   1.3      M     M       M      M    M
 45000  -56.9 -70.4   290   33   17   6.4   3.5      M     M       M      M    M
 40000  -47.7 -53.9   280   39   20   4.5   2.5      M     M       M      M    M
 38000  -44.6 -48.3   275   36   18   4.5   2.5      M     M       M      M    M
 36000  -42.0 -43.6   275   34   17   4.9   2.7      M     M       M      M    M
 34000  -38.4 -37.1   280   33   17   6.1   3.3      M     M       M      M    M
 32000  -34.7 -30.5   290   33   17   5.9   3.2      M     M       M      M    M
 30000  -30.6 -23.1   295   30   15   6.9   3.8   45.5 113.9    11.8      M    M
 29000  -28.5 -19.3   295   28   14   6.9   3.8   44.5 112.1    11.1      M    M
 28000  -26.4 -15.5   295   26   13   6.7   3.7   43.5 110.3    10.5      M    M
 27000  -24.5 -12.1   300   23   12   6.7   3.7   42.2 108.0     9.6      M    M
 26000  -22.5  -8.5   300   21   11   6.7   3.7   41.0 105.9     8.8      M    M
 25000  -20.5  -4.9   300   18    9   6.6   3.6   40.0 104.0     8.0      M    M
 24000  -18.7  -1.7   300   16    8   5.8   3.2   38.5 101.3     6.8      M    M
 23000  -17.0   1.4   300   13    7   5.9   3.2   37.1  98.7     5.6      M    M
 22000  -15.3   4.5   300   11    6   6.3   3.4   35.8  96.4     4.5      M    M
 21000  -13.3   8.1   310    9    4   7.0   3.9   34.7  94.4     3.6      M    M
 20000  -10.7  12.7   320    6    3   7.1   3.9   33.5  92.3     2.6      M    M
 19500   -9.7  14.5   330    5    3   7.5   4.1   33.1  91.6     2.2      M    M
 19000   -8.5  16.7   330    4    2   7.9   4.3   32.8  91.0     1.9      M    M
 18500   -7.4  18.7   335    4    2   8.0   4.4   32.5  90.4     1.6      M    M
 18000   -6.3  20.7   355    3    2   6.9   3.8   32.1  89.7     1.3      M    M
 17500   -5.3  22.5   025    4    2   7.0   3.8   31.6  88.8     0.8      M    M
 17000   -4.2  24.4   040    5    2   7.7   4.2   31.1  88.0     0.4      M    M
 16500   -3.0  26.6   055    5    3   8.3   4.5   30.9  87.6     0.2      M    M
 16000   -1.8  28.8   070    6    3   8.4   4.6   30.6  87.2    -0.0    968  4.9
 15500   -0.5  31.1   075    6    3   9.0   4.9   30.5  86.8    -0.2    914  4.6
 15000    0.8  33.4   080    6    3   9.0   4.9   30.3  86.6    -0.4    860  4.4
 14500    2.1  35.8   085    5    3   8.5   4.6   30.2  86.3    -0.6    807  4.1
 14000    3.3  37.9   090    4    2   8.5   4.7   30.0  85.9    -0.8    756  3.8
 13500    4.6  40.3   100    3    2   8.5   4.7   29.8  85.6    -1.0    704  3.6
 13000    5.8  42.4   115    3    1   8.6   4.7   29.6  85.2    -1.3    652  3.3
 12500    7.0  44.6   140    2    1   8.6   4.7   29.4  84.9    -1.5    600  3.0
 12000    8.3  46.9   155    3    1   8.6   4.7   29.2  84.5    -1.7    548  2.8
 11500    9.5  49.1   165    3    2   8.5   4.7   29.0  84.2    -1.9    496  2.5
 11000   10.8  51.4   165    3    2   8.3   4.5   28.8  83.9    -2.2    443  2.3
 10500   12.0  53.6   165    4    2   5.0   2.8   28.6  83.5    -2.4    391  2.0
 10250   12.2  54.0   165    4    2   4.9   2.7   28.1  82.6    -2.9    377  1.9
 10000   12.9  55.2   165    4    2  10.0   5.5   28.0  82.4    -3.0    351  1.8
  9750   13.6  56.5   165    4    2  10.2   5.6   28.0  82.4    -3.0    323  1.6
  9500   14.2  57.6   160    4    2   7.4   4.1   28.0  82.4    -3.1    295  1.5
  9250   14.6  58.3   165    4    2   4.6   2.5   27.6  81.7    -3.4    276  1.4
  9000   15.1  59.2   170    4    2   7.3   4.0   27.3  81.2    -3.8    256  1.3
  8750   15.7  60.3   170    4    2   8.6   4.7   27.2  81.0    -3.9    229  1.2
  8500   16.3  61.3   175    3    2   6.1   3.4   27.0  80.7    -4.0    205  1.0
  8250   16.6  61.9   185    3    2   4.5   2.5   26.7  80.0    -4.4    187  0.9
  8000   17.0  62.6   195    3    1   5.9   3.2   26.3  79.3    -4.8    169  0.9
  7750   17.4  63.3   210    2    1   5.9   3.2   26.0  78.9    -5.1    148  0.8
  7500   17.8  64.0   235    2    1   3.5   1.9   25.6  78.2    -5.5    131  0.7
  7250   17.9  64.2   265    2    1   1.9   1.0   25.1  77.2    -6.1    118  0.6
  7000   18.1  64.6   290    3    2   4.6   2.5   24.6  76.2    -6.7    106  0.5
  6750   18.5  65.3   290    4    2   3.8   2.1   24.2  75.6    -7.0     87  0.4
  6500   18.5  65.3   295    4    2   0.1   0.1   23.6  74.4    -7.7     78  0.4
  6250   18.5  65.3   300    4    2   0.2   0.1   22.9  73.1    -8.5     70  0.4
  6000   18.5  65.3   305    5    2   0.6   0.3   22.1  71.8    -9.2     63  0.3
  5750   18.4  65.1   310    5    3  -4.1  -2.2   21.3  70.4   -10.1     58  0.3
  5500   17.8  64.0   300    4    2 -13.0  -7.1   19.9  67.9   -11.5     70  0.4

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

           07/17/2024 at 0900 MDT          |       07/17/2024 at 1200 MDT
                                           |
CAPE...  +228.7    LI...       -2.5        | CAPE...  +583.5    LI...       -3.3
CINH...  -134.2    K Index... +24.1        | CINH...   -23.8    K Index... +23.8
                                           |
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 -62.2 -80.0  295  19 10   2.5   1.4 | -62.1 -79.8  305  21 11   2.4   1.3
 45000 -56.5 -69.7  295  30 15   6.4   3.5 | -56.5 -69.7  295  28 14   6.3   3.5
 40000 -47.0 -52.6  285  35 18   4.1   2.2 | -47.2 -53.0  280  33 17   3.7   2.0
 38000 -44.5 -48.1  285  31 16   4.1   2.2 | -44.9 -48.8  285  29 15   3.8   2.1
 36000 -42.1 -43.8  285  28 14   4.1   2.3 | -42.7 -44.9  290  26 13   3.9   2.1
 34000 -38.8 -37.8  290  26 14   5.7   3.1 | -39.2 -38.6  295  26 14   6.1   3.3
 32000 -35.3 -31.5  295  25 13   5.6   3.1 | -35.5 -31.9  300  28 14   6.0   3.3
 30000 -30.8 -23.4  300  23 12   7.0   3.8 | -31.5 -24.7  300  25 13   6.8   3.7
 29000 -28.7 -19.7  300  22 11   7.0   3.8 | -29.0 -20.2  300  22 11   6.8   3.7
 28000 -26.6 -15.9  300  21 11   7.3   4.0 | -26.9 -16.4  300  21 11   7.9   4.4
 27000 -24.4 -11.9  300  20 10   7.3   4.0 | -24.6 -12.3  300  19 10   7.8   4.3
 26000 -22.2  -8.0  300  18  9   7.3   4.0 | -22.3  -8.1  300  18  9   7.8   4.3
 25000 -20.0  -4.0  300  17  9   6.7   3.7 | -19.9  -3.8  300  16  8   6.9   3.8
 24000 -18.3  -0.9  300  16  8   5.8   3.2 | -18.2  -0.8  295  16  8   6.1   3.3
 23000 -16.6   2.1  295  15  8   5.9   3.2 | -16.4   2.5  290  15  8   6.2   3.4
 22000 -14.9   5.2  295  14  7   6.4   3.5 | -14.6   5.7  285  15  8   6.6   3.6
 21000 -13.0   8.6  290  11  6   6.7   3.7 | -12.7   9.1  285  14  7   6.7   3.7
 20000 -11.0  12.2  290   9  4   6.8   3.7 | -10.7  12.7  280  13  7   6.8   3.7
 19500 -10.1  13.8  285   8  4   6.9   3.8 |  -9.8  14.4  280  13  7   6.9   3.8
 19000  -9.0  15.8  285   6  3   7.7   4.2 |  -8.7  16.3  280  12  6   7.2   4.0
 18500  -7.8  18.0  285   5  3   7.6   4.2 |  -7.7  18.1  280  10  5   7.2   3.9
 18000  -6.7  19.9  285   4  2   7.6   4.2 |  -6.6  20.1  275   9  5   7.5   4.1
 17500  -5.6  21.9  290   4  2   7.6   4.1 |  -5.5  22.1  275   8  4   7.6   4.2
 17000  -4.5  23.9  295   3  1   7.6   4.2 |  -4.4  24.1  275   7  4   7.7   4.2
 16500  -3.3  26.1  300   1  1   8.0   4.4 |  -3.2  26.2  265   6  3   8.2   4.5
 16000  -1.5  29.3  085   1  1   8.1   4.4 |  -1.9  28.6  255   5  2   8.2   4.5
 15500  -0.3  31.5  105   2  1   8.3   4.6 |  -0.7  30.7  240   4  2   8.4   4.6
 15000   0.9  33.6  110   3  2   8.3   4.6 |   1.2  34.2  215   4  2   8.4   4.6
 14500   2.2  36.0  115   4  2   8.9   4.9 |   2.5  36.5  195   4  2   8.7   4.8
 14000   3.4  38.1  120   4  2   8.9   4.9 |   3.7  38.7  185   4  2   8.6   4.7
 13500   4.7  40.5  125   4  2   8.9   4.9 |   5.0  41.0  175   5  2   8.9   4.9
 13000   6.0  42.8  130   4  2   8.9   4.9 |   6.3  43.3  170   5  3   8.9   4.9
 12500   7.2  45.0  140   4  2   8.8   4.8 |   7.6  45.7  165   6  3   8.9   4.9
 12000   8.5  47.3  145   5  2   8.8   4.8 |   8.9  48.0  160   6  3   9.0   4.9
 11500   9.8  49.6  155   5  3   8.5   4.7 |  10.2  50.4  160   7  3   9.1   5.0
 11000  11.0  51.8  160   5  3   8.3   4.6 |  11.5  52.7  160   7  4   9.3   5.1
 10500  12.1  53.8  170   6  3   3.9   2.1 |  12.6  54.7  160   7  4   2.9   1.6
 10250  12.3  54.1  175   6  3   5.4   2.9 |  12.8  55.0  160   7  4   6.8   3.7
 10000  12.9  55.2  175   6  3  10.8   5.9 |  13.6  56.5  155   7  4  13.7   7.5
  9750  13.7  56.7  180   6  3   9.7   5.3 |  14.5  58.1  155   7  3  11.0   6.1
  9500  14.3  57.7  185   6  3   6.5   3.6 |  15.2  59.4  155   6  3   7.5   4.1
  9250  14.7  58.5  190   5  3   4.3   2.4 |  15.6  60.1  160   6  3   6.1   3.3
  9000  15.1  59.2  195   5  3   7.6   4.2 |  16.2  61.2  160   6  3  10.4   5.7
  8750  15.7  60.3  200   4  2   8.3   4.6 |  17.0  62.6  155   6  3  10.6   5.8
  8500  16.2  61.2  210   4  2   5.3   2.9 |  17.7  63.9  150   5  3   7.4   4.1
  8250  16.5  61.7  225   4  2   4.0   2.2 |  18.1  64.6  150   5  2   5.7   3.1
  8000  16.8  62.2  245   3  2   5.6   3.1 |  18.6  65.5  145   4  2   9.5   5.2
  7750  17.3  63.1  250   3  2   4.8   2.6 |  19.4  66.9  125   4  2  10.3   5.7
  7500  17.5  63.5  265   3  2   2.3   1.3 |  20.0  68.0  115   3  2   7.1   3.9
  7250  17.6  63.7  280   4  2   1.0   0.6 |  20.5  68.9  110   3  2   5.4   3.0
  7000  17.7  63.9  295   4  2   5.1   2.8 |  21.0  69.8  105   3  2  12.3   6.8
  6750  18.2  64.8  300   4  2   7.5   4.1 |  22.1  71.8  100   3  2  14.5   8.0
  6500  18.6  65.5  305   4  2   5.2   2.9 |  22.9  73.2  095   3  2   8.8   4.8
  6250  19.0  66.2  310   4  2   6.4   3.5 |  23.6  74.5  095   3  2  11.5   6.3
  6000  19.4  66.9  315   4  2   4.2   2.3 |  24.4  75.9  090   3  2   6.6   3.6
  5750  19.7  67.5  320   5  2  10.5   5.8 |  24.9  76.8  080   3  2  12.8   7.0
  5500  21.1  70.0  325   4  2  26.6  14.6 |  26.6  79.9  080   3  2  35.7  19.6

           07/17/2024 at 1500 MDT          |       07/17/2024 at 1800 MDT
                                           |
CAPE...  +350.3    LI...       -2.1        | CAPE...  +255.9    LI...       -1.7
CINH...   -10.7    K Index... +30.3        | CINH...   -47.6    K Index... +30.3
                                           |
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 -61.7 -79.1  310  19 10   2.5   1.4 | -62.3 -80.1  310  19 10   3.1   1.7
 45000 -55.8 -68.4  295  27 14   5.8   3.2 | -56.0 -68.8  300  26 14   5.5   3.0
 40000 -47.6 -53.7  285  33 17   3.8   2.1 | -48.1 -54.6  285  33 17   4.0   2.2
 38000 -45.3 -49.5  285  31 16   3.8   2.1 | -45.7 -50.3  280  31 16   4.0   2.2
 36000 -43.0 -45.4  280  29 15   4.0   2.2 | -43.3 -45.9  275  29 15   4.5   2.5
 34000 -39.5 -39.1  290  30 16   6.1   3.3 | -39.3 -38.7  280  28 15   6.8   3.8
 32000 -35.8 -32.4  295  32 17   5.9   3.2 | -35.2 -31.4  285  28 15   6.6   3.6
 30000 -30.8 -23.4  295  31 16   7.8   4.3 | -30.1 -22.2  295  29 15   7.6   4.2
 29000 -28.5 -19.3  295  29 15   7.8   4.3 | -27.9 -18.2  295  30 15   7.7   4.2
 28000 -26.2 -15.2  295  28 14   7.3   4.0 | -25.6 -14.1  295  30 15   7.3   4.0
 27000 -24.0 -11.2  295  26 13   7.3   4.0 | -23.4 -10.1  300  29 15   7.4   4.0
 26000 -21.8  -7.2  290  24 13   7.3   4.0 | -21.2  -6.2  300  28 14   7.4   4.0
 25000 -19.7  -3.5  290  23 12   7.1   3.9 | -19.1  -2.4  300  27 14   7.1   3.9
 24000 -17.6   0.3  290  22 11   6.9   3.8 | -17.0   1.4  295  26 13   6.9   3.8
 23000 -15.6   3.9  285  21 11   6.9   3.8 | -15.0   5.0  295  25 13   6.9   3.8
 22000 -13.6   7.5  285  20 10   6.6   3.6 | -13.0   8.6  295  24 12   6.9   3.8
 21000 -11.8  10.8  285  17  9   6.6   3.6 | -11.0  12.2  295  22 11   6.9   3.8
 20000  -9.9  14.2  285  15  8   6.6   3.6 |  -9.0  15.8  295  20 10   7.0   3.8
 19500  -8.9  16.0  285  14  7   6.7   3.7 |  -8.0  17.6  295  19 10   7.0   3.8
 19000  -7.9  17.8  285  13  6   7.0   3.9 |  -7.0  19.4  295  17  9   6.6   3.6
 18500  -6.9  19.6  280  11  6   7.0   3.9 |  -6.1  21.0  295  16  8   6.6   3.6
 18000  -5.9  21.4  275   9  5   6.9   3.8 |  -5.1  22.8  295  14  7   7.1   3.9
 17500  -4.9  23.2  275   7  4   6.9   3.8 |  -4.1  24.6  295  12  6   7.2   4.0
 17000  -3.9  25.0  270   5  3   7.1   3.9 |  -3.0  26.6  295  10  5   7.3   4.0
 16500  -2.8  27.0  260   3  2   7.7   4.2 |  -2.0  28.4  295   8  4   7.4   4.0
 16000  -1.1  30.0  200   2  1   7.9   4.4 |  -0.4  31.3  290   6  3   7.3   4.0
 15500   0.1  32.2  165   3  1   8.3   4.6 |   0.7  33.3  285   4  2   7.3   4.0
 15000   1.3  34.3  150   4  2   8.4   4.6 |   1.7  35.1  280   3  1   7.3   4.0
 14500   2.6  36.7  145   4  2   9.2   5.0 |   2.7  36.9  260   2  1   7.3   4.0
 14000   3.9  39.0  140   4  2   9.1   5.0 |   3.8  38.8  220   1  1   7.2   3.9
 13500   5.3  41.5  135   5  2   9.7   5.3 |   4.9  40.8  175   1  1   8.5   4.7
 13000   6.7  44.1  130   5  2   9.7   5.3 |   6.2  43.2  165   2  1   8.5   4.7
 12500   8.1  46.6  130   5  3   9.5   5.2 |   7.4  45.3  160   3  1   8.8   4.8
 12000   9.5  49.1  125   5  3   9.5   5.2 |   8.7  47.7  160   3  2   8.9   4.9
 11500  11.0  51.8  125   5  3   9.6   5.3 |  10.0  50.0  165   4  2   8.7   4.8
 11000  12.4  54.3  120   5  3   9.8   5.4 |  11.3  52.3  165   5  3   8.7   4.7
 10500  13.6  56.5  120   5  3   4.2   2.3 |  12.5  54.5  170   6  3   3.0   1.6
 10250  14.0  57.2  120   5  3   8.2   4.5 |  12.6  54.7  170   5  3   6.0   3.3
 10000  14.9  58.8  120   5  3  14.2   7.8 |  13.5  56.3  170   6  3  12.7   7.0
  9750  15.9  60.6  120   5  3  11.9   6.5 |  14.3  57.7  170   7  4  10.5   5.8
  9500  16.7  62.1  120   5  3   8.5   4.7 |  15.0  59.0  175   8  4   7.4   4.0
  9250  17.2  63.0  120   5  2   7.6   4.2 |  15.4  59.7  175   8  4   5.6   3.1
  9000  17.9  64.2  120   5  2  11.5   6.3 |  16.0  60.8  175   9  4   9.7   5.3
  8750  18.8  65.8  120   5  3  11.6   6.4 |  16.7  62.1  175  10  5  10.4   5.7
  8500  19.6  67.3  120   5  2   9.1   5.0 |  17.4  63.3  180  11  5   7.7   4.2
  8250  20.2  68.4  120   5  2   7.7   4.2 |  17.9  64.2  180  11  6   5.9   3.2
  8000  20.8  69.4  120   4  2  10.5   5.7 |  18.4  65.1  185  11  6   9.5   5.2
  7750  21.7  71.1  125   5  2  11.0   6.0 |  19.2  66.6  185  12  6  10.6   5.8
  7500  22.4  72.3  125   5  2   8.3   4.6 |  19.8  67.6  185  12  6   7.1   3.9
  7250  23.0  73.4  125   4  2   7.4   4.0 |  20.3  68.5  190  12  6   5.7   3.1
  7000  23.6  74.5  125   4  2  10.7   5.8 |  20.8  69.4  190  13  6   9.8   5.4
  6750  24.5  76.1  135   5  2  11.8   6.5 |  21.7  71.1  190  13  7  11.6   6.3
  6500  25.2  77.4  135   4  2   9.3   5.1 |  22.4  72.3  190  13  6   8.8   4.8
  6250  25.9  78.6  135   4  2  10.2   5.6 |  23.1  73.6  190  12  6   9.9   5.5
  6000  26.7  80.1  130   4  2   8.9   4.9 |  23.8  74.8  195  12  6   8.2   4.5
  5750  27.4  81.3  135   4  2  14.2   7.8 |  24.4  75.9  195  12  6  11.6   6.4
  5500  28.9  84.0  135   4  2  25.9  14.2 |  25.7  78.3  190  11  5  21.6  11.9
________________________________________________________________________________

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