Soaring Guidance
Issued by NWS Denver/Boulder, CO

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399
UXUS97 KBOU 140034
SRGBOU

Soaring Forecast
National Weather Service Denver/Boulder, Colorado
1830 MDT Thursday, June 13, 2024

This forecast is for Friday, June 14, 2024:

If the trigger temperature of 77.4 F/25.2 C is reached...then
   Thermal Soaring Index....................... Good
   Maximum rate of lift........................ 665 ft/min (3.4 m/s)
   Maximum height of thermals.................. 12012 ft MSL (6706 ft AGL)

Forecast maximum temperature................... 86.0 F/30.5 C
Time of trigger temperature.................... 1000 MDT
Time of overdevelopment........................ 1500 MDT
Middle/high clouds during soaring window....... None
Surface winds during soaring window............ 20 mph or less
Height of the -3 thermal index................. 10297 ft MSL (4992 ft AGL)
Thermal soaring outlook for Saturday 06/15..... 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)................ Weak PVA
Potential height of wave....................... 22293 ft MSL (16987 ft AGL)
Wave soaring outlook for Saturday 06/15........ Poor

Remarks... Scattered to numerous thunderstorms Friday afternoon

Sunrise/Sunset.................... 05:30:49 / 20:29:05 MDT
Total possible sunshine........... 14 hr 58 min 17 sec (898 min 17 sec)
Altitude of sun at 12:59:57 MDT... 73.54 degrees

Upper air data from numerical model forecast valid on 06/14/2024 at 0600 MDT

Freezing level.................. 16344 ft MSL (11038 ft AGL)
Convective condensation level... 14591 ft MSL (9285 ft AGL)
Lifted condensation level....... 13752 ft MSL (8446 ft AGL)
Lifted index.................... -5.4
K index......................... +26.8

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  -60.7 -77.3   245   31   16   1.1   0.6      M     M       M      M    M
 45000  -57.6 -71.7   235   44   23   3.9   2.1      M     M       M      M    M
 40000  -51.8 -61.2   240   45   23   4.0   2.2      M     M       M      M    M
 38000  -49.4 -56.9   240   37   19   4.0   2.2      M     M       M      M    M
 36000  -47.0 -52.6   245   30   16   3.8   2.1      M     M       M      M    M
 34000  -42.7 -44.9   240   28   14   7.8   4.3      M     M       M      M    M
 32000  -37.4 -35.3   235   27   14   8.2   4.5      M     M       M      M    M
 30000  -32.1 -25.8   240   24   12   9.0   4.9   43.2 109.7    10.0      M    M
 29000  -29.4 -20.9   245   22   12   9.0   4.9   42.9 109.3     9.9      M    M
 28000  -26.8 -16.2   250   21   11   7.5   4.1   42.6 108.7     9.8      M    M
 27000  -24.6 -12.3   245   21   11   7.4   4.1   41.6 106.9     9.1      M    M
 26000  -22.4  -8.3   240   20   10   7.4   4.1   40.7 105.3     8.5      M    M
 25000  -20.3  -4.5   235   20   10   7.3   4.0   40.0 104.0     7.9      M    M
 24000  -18.2  -0.8   230   22   12   7.1   3.9   38.9 102.1     7.1      M    M
 23000  -16.1   3.0   225   25   13   7.1   3.9   37.9 100.3     6.3      M    M
 22000  -14.0   6.8   220   28   14   7.4   4.0   37.1  98.8     5.6      M    M
 21000  -11.8  10.8   220   24   12   7.7   4.2   36.3  97.3     4.9      M    M
 20000   -9.5  14.9   220   19   10   7.8   4.3   35.6  96.0     4.3      M    M
 19500   -8.4  16.9   220   17    9   7.8   4.3   35.3  95.5     4.0      M    M
 19000   -7.2  19.0   220   15    8   7.7   4.2   34.9  94.9     3.7      M    M
 18500   -6.1  21.0   220   13    7   7.8   4.3   34.6  94.2     3.4      M    M
 18000   -5.0  23.0   220   11    6   8.7   4.8   34.2  93.6     3.1      M    M
 17500   -3.5  25.7   215   10    5   9.7   5.3   34.2  93.6     3.1      M    M
 17000   -2.1  28.2   210    9    4   9.9   5.4   34.2  93.6     3.2      M    M
 16500   -0.1  31.8   210    6    3   8.6   4.7   34.0  93.2     2.9      M    M
 16000    1.1  34.0   205    5    2   8.6   4.7   33.8  92.9     2.7      M    M
 15500    2.4  36.3   210    4    2   8.4   4.6   33.6  92.5     2.5      M    M
 15000    3.6  38.5   215    4    2   8.4   4.6   33.4  92.1     2.3      M    M
 14500    4.9  40.8   220    4    2   8.2   4.5   33.2  91.7     2.1      M    M
 14000    6.1  43.0   220    5    2   8.2   4.5   32.9  91.2     1.9      M    M
 13500    7.2  45.0   220    5    3   7.1   3.9   32.6  90.7     1.6      M    M
 13000    8.2  46.8   220    5    3   6.6   3.6   32.1  89.7     1.1      M    M
 12500    9.1  48.4   220    6    3   6.3   3.5   31.6  88.8     0.6      M    M
 12000    9.9  49.8   220    6    3   6.1   3.3   31.0  87.8    -0.1    460  2.3
 11500   10.8  51.4   220    7    4   5.5   3.0   30.4  86.7    -0.7    421  2.1
 11000   11.3  52.3   215    8    4   4.4   2.4   29.6  85.3    -1.6    388  2.0
 10500   11.9  53.4   215    9    5   2.3   1.2   28.8  83.8    -2.5    357  1.8
 10250   11.9  53.4   215    9    5   1.9   1.1   28.1  82.5    -3.2    348  1.8
 10000   12.2  54.0   205   11    5   5.6   3.1   27.7  81.8    -3.6    332  1.7
  9750   12.6  54.7   200   12    6   5.4   2.9   27.3  81.2    -4.0    313  1.6
  9500   13.0  55.4   190   15    7   5.6   3.1   27.0  80.6    -4.4    295  1.5
  9250   13.4  56.1   190   16    8   5.8   3.2   26.7  80.0    -4.7    274  1.4
  9000   13.9  57.0   185   16    8   6.8   3.8   26.4  79.5    -4.9    252  1.3
  8750   14.5  58.1   185   17    9   8.3   4.5   26.2  79.2    -5.0    226  1.1
  8500   15.1  59.2   180   17    9   6.0   3.3   26.1  78.9    -5.2    201  1.0
  8250   15.4  59.7   180   16    8   4.0   2.2   25.7  78.2    -5.6    184  0.9
  8000   15.7  60.3   180   15    8   4.7   2.6   25.3  77.5    -6.1    168  0.9
  7750   16.0  60.8   180   14    7   5.0   2.7   24.9  76.8    -6.5    151  0.8
  7500   16.4  61.5   180   13    6   5.9   3.2   24.5  76.2    -6.9    134  0.7
  7250   16.8  62.2   175   12    6   6.3   3.4   24.3  75.7    -7.2    114  0.6
  7000   17.2  63.0   175   12    6   6.5   3.6   24.0  75.2    -7.6     95  0.5
  6750   17.6  63.7   170   12    6   5.0   2.7   23.7  74.7    -7.9     76  0.4
  6500   17.8  64.0   175   10    5   2.7   1.5   23.3  73.9    -8.5     62  0.3
  6250   17.9  64.2   175    7    4   2.2   1.2   22.7  72.9    -9.1     51  0.3
  6000   18.0  64.4   180    5    3   3.4   1.8   22.2  71.9    -9.7     40  0.2
  5750   18.3  64.9   185    3    2   3.6   2.0   21.7  71.1   -10.2     26  0.1
  5500   18.4  65.1   180    3    1   1.0   0.5   21.2  70.1   -10.9     15  0.1

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

           06/14/2024 at 0900 MDT          |       06/14/2024 at 1200 MDT
                                           |
CAPE... +1154.4    LI...       -3.2        | CAPE... +1390.6    LI...       -3.9
CINH...  -169.8    K Index... +23.6        | CINH...   -61.5    K Index... +22.4
                                           |
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 -60.0 -76.0  240  27 14   1.9   1.0 | -59.0 -74.2  240  26 14   2.8   1.5
 45000 -56.7 -70.1  230  43 22   2.6   1.4 | -55.2 -67.4  235  44 23   1.6   0.9
 40000 -52.6 -62.7  230  43 22   3.8   2.1 | -52.6 -62.7  235  42 21   3.9   2.2
 38000 -50.3 -58.5  225  35 18   3.8   2.1 | -50.2 -58.4  230  33 17   3.9   2.1
 36000 -48.0 -54.4  220  28 14   3.5   1.9 | -47.9 -54.2  220  25 13   3.8   2.1
 34000 -43.4 -46.1  220  26 14   8.7   4.7 | -43.5 -46.3  210  23 12   8.3   4.6
 32000 -37.5 -35.5  220  26 13   9.1   5.0 | -37.9 -36.2  205  23 12   8.2   4.5
 30000 -32.5 -26.5  220  24 13   8.5   4.7 | -32.7 -26.9  210  22 11   8.7   4.7
 29000 -29.9 -21.8  220  24 12   8.5   4.7 | -30.1 -22.2  215  22 11   8.7   4.8
 28000 -27.4 -17.3  225  23 12   8.1   4.5 | -27.6 -17.7  215  22 11   7.9   4.3
 27000 -25.0 -13.0  225  26 13   8.1   4.4 | -25.3 -13.5  220  25 13   7.7   4.2
 26000 -22.6  -8.7  230  29 15   8.1   4.5 | -23.0  -9.4  220  28 14   7.7   4.2
 25000 -20.2  -4.4  235  31 16   7.9   4.3 | -20.7  -5.3  220  30 16   7.7   4.2
 24000 -18.1  -0.6  230  34 17   7.0   3.9 | -18.6  -1.5  225  32 16   7.3   4.0
 23000 -16.0   3.2  225  36 19   7.1   3.9 | -16.5   2.3  225  34 17   7.3   4.0
 22000 -13.9   7.0  225  39 20   7.3   4.0 | -14.3   6.3  225  35 18   7.5   4.1
 21000 -11.7  10.9  225  35 18   7.6   4.2 | -12.0  10.4  225  34 17   7.8   4.3
 20000  -9.5  14.9  220  31 16   7.6   4.2 |  -9.8  14.4  225  32 17   7.9   4.3
 19500  -8.3  17.1  220  29 15   7.5   4.1 |  -8.6  16.5  225  32 16   7.9   4.3
 19000  -7.1  19.2  215  27 14   9.0   4.9 |  -7.5  18.5  225  31 16   8.0   4.4
 18500  -5.8  21.6  210  25 13   8.9   4.9 |  -6.3  20.7  220  30 15   8.0   4.4
 18000  -4.5  23.9  205  23 12   8.8   4.8 |  -5.1  22.8  215  29 15   8.3   4.6
 17500  -3.2  26.2  200  21 11   8.7   4.8 |  -3.8  25.2  215  27 14   8.7   4.8
 17000  -1.3  29.7  195  18  9   8.6   4.7 |  -1.8  28.8  210  24 13   9.1   5.0
 16500  -0.0  32.0  195  16  8   8.4   4.6 |  -0.4  31.3  205  23 12   9.5   5.2
 16000   1.2  34.2  195  14  7   8.4   4.6 |   1.0  33.8  200  21 11   9.5   5.2
 15500   2.5  36.5  195  13  6   8.5   4.6 |   2.3  36.1  195  19 10   8.6   4.7
 15000   3.7  38.7  195  11  6   8.5   4.7 |   3.6  38.5  195  17  9   8.8   4.8
 14500   4.9  40.8  195   9  5   8.2   4.5 |   4.8  40.6  190  14  7   6.9   3.8
 14000   6.1  43.0  200   8  4   8.2   4.5 |   5.8  42.4  185  11  6   6.8   3.7
 13500   7.3  45.1  210   6  3   7.3   4.0 |   6.7  44.1  180   7  4   6.2   3.4
 13000   8.3  46.9  225   5  2   6.8   3.7 |   7.5  45.5  180   4  2   5.9   3.2
 12500   9.2  48.6  250   4  2   6.7   3.7 |   8.4  47.1  155   1  1   6.2   3.4
 12000  10.2  50.4  275   3  2   6.6   3.6 |   9.4  48.9  030   2  1   6.7   3.7
 11500  11.2  52.2  295   4  2   6.3   3.5 |  10.3  50.5  015   4  2   6.7   3.7
 11000  12.0  53.6  310   4  2   5.6   3.1 |  11.3  52.3  015   6  3   6.6   3.6
 10500  12.8  55.0  315   5  3   3.9   2.1 |  12.4  54.3  015   7  4   3.7   2.0
 10250  13.0  55.4  315   6  3   3.4   1.9 |  12.5  54.5  015   7  4   4.5   2.5
 10000  13.3  55.9  315   5  3   5.6   3.1 |  13.1  55.6  015   7  4   8.9   4.9
  9750  13.6  56.5  310   5  3   5.5   3.0 |  13.7  56.7  020   7  4   8.2   4.5
  9500  14.0  57.2  305   5  3   4.9   2.7 |  14.2  57.6  020   7  4   6.9   3.8
  9250  14.2  57.6  295   5  2   3.8   2.1 |  14.6  58.3  025   6  3   4.6   2.5
  9000  14.5  58.1  280   4  2   4.7   2.6 |  14.9  58.8  030   5  3   6.1   3.4
  8750  14.9  58.8  260   4  2   5.5   3.0 |  15.3  59.5  045   4  2   7.0   3.9
  8500  15.3  59.5  245   5  2   5.0   2.8 |  15.7  60.3  065   3  2   7.5   4.1
  8250  15.7  60.3  235   5  3   4.8   2.6 |  16.2  61.2  075   3  2   8.0   4.4
  8000  16.0  60.8  225   6  3   4.6   2.5 |  16.7  62.1  085   3  2   8.9   4.9
  7750  16.3  61.3  220   6  3   4.3   2.4 |  17.4  63.3  090   3  2  10.2   5.6
  7500  16.6  61.9  215   6  3   5.3   2.9 |  18.2  64.8  090   3  2  10.5   5.8
  7250  17.0  62.6  205   6  3   6.4   3.5 |  19.0  66.2  090   3  2  11.0   6.0
  7000  17.3  63.1  190   5  3   5.8   3.2 |  19.8  67.6  090   3  2  10.5   5.7
  6750  17.6  63.7  175   5  3   6.8   3.7 |  20.5  68.9  090   3  2   9.9   5.4
  6500  18.1  64.6  160   5  2   9.5   5.2 |  21.3  70.3  090   3  2  10.3   5.7
  6250  18.9  66.0  160   4  2  11.3   6.2 |  22.1  71.8  090   3  2  11.8   6.5
  6000  19.7  67.5  155   4  2   8.5   4.7 |  22.9  73.2  090   3  2   8.2   4.5
  5750  20.3  68.5  155   4  2  12.7   7.0 |  23.5  74.3  090   3  2  14.8   8.1
  5500  21.8  71.2  150   4  2  26.6  14.6 |  25.4  77.7  095   3  2  35.8  19.6

           06/14/2024 at 1500 MDT          |       06/14/2024 at 1800 MDT
                                           |
CAPE... +1848.7    LI...       -5.0        | CAPE...    +4.4    LI...       +0.2
CINH...    -0.6    K Index... +32.9        | CINH...   -69.9    K Index... +27.6
                                           |
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  250  28 14   3.6   2.0 | -58.9 -74.0  265  29 15   2.9   1.6
 45000 -55.0 -67.0  255  39 20  -1.5  -0.8 | -55.5 -67.9  275  21 11   0.8   0.4
 40000 -56.1 -69.0  260  37 19   8.0   4.4 | -52.5 -62.5  085  30 15   9.0   4.9
 38000 -51.4 -60.5  255  31 16   7.8   4.3 | -47.1 -52.8  080  25 13   8.9   4.9
 36000 -46.7 -52.1  245  26 13   7.8   4.3 | -41.7 -43.1  075  20 10   8.9   4.9
 34000 -41.5 -42.7  230  23 12   7.7   4.2 | -36.9 -34.4  075  14  7   8.0   4.4
 32000 -36.9 -34.4  215  22 11   7.6   4.1 | -32.1 -25.8  075   8  4   7.8   4.3
 30000 -31.8 -25.2  210  24 12   8.5   4.7 | -27.8 -18.0  095   3  2   7.2   3.9
 29000 -29.3 -20.7  205  25 13   8.5   4.7 | -25.1 -13.2  180   2  1   7.2   4.0
 28000 -26.8 -16.2  200  27 14   8.3   4.6 | -23.0  -9.4  220   4  2   6.7   3.7
 27000 -24.3 -11.7  205  28 14   8.3   4.5 | -21.1  -6.0  225   6  3   6.6   3.6
 26000 -21.9  -7.4  210  29 15   8.3   4.6 | -19.2  -2.6  230   9  4   6.6   3.6
 25000 -19.4  -2.9  210  30 15   8.3   4.5 | -17.2   1.0  230  11  6   6.5   3.6
 24000 -17.2   1.0  210  33 17   7.3   4.0 | -15.5   4.1  230  14  7   5.7   3.1
 23000 -15.1   4.8  215  37 19   7.4   4.0 | -13.8   7.2  230  17  9   5.8   3.2
 22000 -13.0   8.6  215  41 21   7.3   4.0 | -12.1  10.2  230  20 10   5.7   3.1
 21000 -11.0  12.2  215  38 19   6.5   3.6 | -10.6  12.9  225  23 12   5.4   2.9
 20000  -9.1  15.6  210  33 17   6.5   3.6 |  -9.0  15.8  225  26 13   5.4   3.0
 19500  -8.2  17.2  210  31 16   6.4   3.5 |  -8.2  17.2  225  27 14   5.4   3.0
 19000  -7.2  19.0  210  29 15   7.2   3.9 |  -7.5  18.5  225  29 15   4.8   2.6
 18500  -6.2  20.8  210  28 14   7.2   4.0 |  -6.8  19.8  225  30 16   4.7   2.6
 18000  -5.1  22.8  210  26 14   7.2   3.9 |  -6.1  21.0  225  32 16   4.9   2.7
 17500  -3.6  25.5  205  23 12   6.8   3.8 |  -5.3  22.5  225  33 17   6.5   3.6
 17000  -2.6  27.3  200  20 10   7.1   3.9 |  -4.4  24.1  225  33 17   6.5   3.6
 16500  -1.5  29.3  195  17  9   7.8   4.3 |  -3.5  25.7  225  34 17   5.3   2.9
 16000  -0.3  31.5  190  14  7   8.0   4.4 |  -2.7  27.1  225  34 17   5.2   2.9
 15500   0.7  33.3  185  10  5   5.9   3.2 |  -1.5  29.3  225  34 17   7.2   3.9
 15000   1.5  34.7  180   7  4   6.1   3.3 |  -0.5  31.1  225  33 17   7.1   3.9
 14500   2.4  36.3  170   4  2   6.3   3.4 |   0.6  33.1  230  33 17   8.0   4.4
 14000   3.3  37.9  145   2  1   6.4   3.5 |   1.8  35.2  230  32 16   8.4   4.6
 13500   4.1  39.4  065   2  1   7.1   3.9 |   3.1  37.6  230  31 16   8.9   4.9
 13000   5.2  41.4  035   2  1   7.9   4.3 |   4.5  40.1  230  29 15   9.5   5.2
 12500   6.3  43.3  025   4  2   8.3   4.5 |   5.9  42.6  235  28 14   9.2   5.1
 12000   7.5  45.5  025   4  2   9.1   5.0 |   7.1  44.8  240  26 13   8.2   4.5
 11500   8.7  47.7  030   4  2   9.2   5.1 |   8.3  46.9  240  24 12   8.0   4.4
 11000  10.0  50.0  025   4  2   9.5   5.2 |   9.3  48.7  245  22 12   6.5   3.6
 10500  11.4  52.5  025   5  3   6.1   3.3 |  10.2  50.4  255  21 11   4.9   2.7
 10250  11.7  53.1  025   5  3   7.2   3.9 |  10.5  50.9  255  21 11   3.5   1.9
 10000  12.6  54.7  020   5  3  12.5   6.9 |  10.8  51.4  260  20 10   6.2   3.4
  9750  13.4  56.1  020   5  3  11.4   6.3 |  11.3  52.3  260  20 10   7.2   4.0
  9500  14.3  57.7  020   5  3  10.5   5.8 |  11.8  53.2  265  20 10   6.3   3.5
  9250  15.0  59.0  020   5  3   8.6   4.7 |  12.2  54.0  270  20 10   4.4   2.4
  9000  15.6  60.1  015   5  3   9.7   5.3 |  12.5  54.5  270  20 10   3.6   2.0
  8750  16.4  61.5  015   5  3  10.7   5.8 |  12.7  54.9  275  20 10   3.8   2.1
  8500  17.2  63.0  010   5  3  10.2   5.6 |  13.0  55.4  275  20 10   3.8   2.1
  8250  18.0  64.4  010   5  3  10.1   5.6 |  13.3  55.9  280  20 10   3.9   2.1
  8000  18.7  65.7  005   6  3   9.8   5.4 |  13.5  56.3  280  20 11   3.7   2.0
  7750  19.4  66.9  005   6  3   9.2   5.1 |  13.8  56.8  280  21 11   3.6   2.0
  7500  20.1  68.2  005   6  3  10.0   5.5 |  14.0  57.2  280  21 11   2.7   1.5
  7250  20.9  69.6  360   6  3  11.1   6.1 |  14.1  57.4  280  22 11   1.8   1.0
  7000  21.7  71.1  360   6  3  10.2   5.6 |  14.3  57.7  280  22 11   2.1   1.2
  6750  22.4  72.3  355   6  3   8.3   4.6 |  14.4  57.9  280  23 12   2.4   1.3
  6500  23.1  73.6  355   6  3   9.7   5.3 |  14.5  58.1  275  22 12   0.9   0.5
  6250  23.9  75.0  355   6  3  11.8   6.5 |  14.5  58.1  275  22 11   0.7   0.4
  6000  24.7  76.5  355   6  3  10.1   5.5 |  14.4  57.9  270  21 11  -1.7  -1.0
  5750  25.5  77.9  355   6  3  13.5   7.4 |  14.2  57.6  270  20 10   2.6   1.4
  5500  26.9  80.4  350   6  3  24.0  13.2 |  15.0  59.0  260  16  8  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