Soaring Guidance
Issued by NWS Grand Junction, CO

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000
UXUS97 KGJT 271239
SRGGJT

Soaring Forecast
National Weather Service Grand Junction, Colorado
0639 MDT Saturday, September 27, 2014

This forecast is for Saturday, September 27, 2014:

If the trigger temperature of 82.9 F/28.3 C is reached...then
   Thermal Soaring Index....................... Poor
   Maximum rate of lift........................ 107 ft/min (0.5 m/s)
   Maximum height of thermals.................. 7256 ft MSL (2417 ft AGL)

Forecast maximum temperature................... 81.0 F/27.7 C
Time of trigger temperature.................... None
Time of overdevelopment........................ 1200 MDT
Middle/high clouds during soaring window....... Overcast opaque high
Surface winds during soaring window............ 20 mph or less
Height of the -3 thermal index................. 6136 ft MSL (1296 ft AGL)
Thermal soaring outlook for Sunday 09/28....... Fair

Wave Soaring Index............................. Not available

Remarks...

Sunrise/Sunset.................... 07:06:28 / 19:04:35 MDT
Total possible sunshine........... 11 hr 58 min 8 sec (718 min 8 sec)
Altitude of sun at 13:05:02 MDT... 49.07 degrees

Upper air data from rawinsonde observation taken on 09/27/2014 at 0600 MDT

Freezing level.................. 14858 ft MSL (10019 ft AGL)
Convective condensation level... 15473 ft MSL (10634 ft AGL)
Lifted condensation level....... 14255 ft MSL (9416 ft AGL)
Lifted index.................... +1.8
K index......................... +28.1

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  -69.9 -93.8   220   41   21   4.2   2.3   78.9 174.1    29.9      M    M
 45000  -61.3 -78.3   225   37   19   6.6   3.6   67.7 153.9    25.2      M    M
 40000  -55.1 -67.2   235   37   19   5.7   3.1   54.5 130.1    18.2      M    M
 38000  -50.6 -59.1   230   31   16   8.3   4.5   52.6 126.7    17.4      M    M
 36000  -45.9 -50.6   210   25   13   8.4   4.6   51.0 123.8    16.7      M    M
 34000  -41.0 -41.8   215   26   13   8.5   4.7   49.6 121.4    16.1      M    M
 32000  -36.6 -33.9   210   23   12   9.3   5.1   46.6 116.0    14.4      M    M
 30000  -31.2 -24.2   195   22   11   8.9   4.9   46.1 115.0    14.3      M    M
 29000  -28.7 -19.7   190   20   10   8.1   4.4   45.5 113.9    14.0      M    M
 28000  -26.2 -15.2   180   19   10   8.1   4.4   44.9 112.9    13.8      M    M
 27000  -23.8 -10.8   175   21   11   8.2   4.5   44.3 111.7    13.4      M    M
 26000  -21.6  -6.9   160   21   11   7.3   4.0   43.4 110.1    12.8      M    M
 25000  -20.4  -4.7   150   22   11  -1.2  -0.6   41.4 106.5    11.3      M    M
 24000  -18.1  -0.6   175   24   12   9.6   5.2   40.6 105.1    10.8      M    M
 23000  -15.5   4.1   185   24   12   6.4   3.5   40.2 104.4    10.6      M    M
 22000  -13.2   8.2   185   24   13   7.8   4.3   39.3 102.8    10.0      M    M
 21000  -11.6  11.1   180   25   13   6.0   3.3   37.9 100.2     8.8      M    M
 20000   -9.8  14.4   195   30   16   6.3   3.4   36.6  97.8     7.8      M    M
 19500   -9.1  15.6   190   28   15   4.0   2.2   35.7  96.2     7.0      M    M
 19000   -8.7  16.3   185   26   13   3.7   2.0   34.7  94.4     6.1      M    M
 18500   -8.2  17.2   180   24   12   4.6   2.5   33.6  92.4     5.0      M    M
 18000   -7.1  19.2   180   22   12   9.2   5.0   33.2  91.7     4.8      M    M
 17500   -5.1  22.8   180   20   10   8.9   4.9   33.0  91.3     4.6      M    M
 17000   -3.7  25.3   185   19   10   8.9   4.9   32.8  91.1     4.5      M    M
 16500   -2.5  27.5   185   17    9   4.6   2.5   32.7  90.8     4.3      M    M
 16000   -2.0  28.4   185   16    8   6.4   3.5   31.8  89.2     3.4      M    M
 15500   -1.2  29.8   190   14    7   7.4   4.1   31.2  88.1     2.7      M    M
 15000   -0.2  31.6   190   12    6   8.5   4.7   30.8  87.4     2.3      M    M
 14500    1.2  34.2   205   12    6   9.3   5.1   30.7  87.3     2.3      M    M
 14000    2.6  36.7   220   12    6   9.3   5.1   30.7  87.3     2.3      M    M
 13500    4.0  39.2   230   11    6   9.3   5.1   30.7  87.2     2.2      M    M
 13000    5.4  41.7   235   11    6   9.3   5.1   30.6  87.1     2.2      M    M
 12500    6.8  44.2   230   12    6   9.3   5.1   30.5  87.0     2.1      M    M
 12000    8.2  46.8   230   13    7   9.3   5.1   30.5  86.9     2.1      M    M
 11500    9.6  49.3   225   13    7   9.3   5.1   30.4  86.7     2.0      M    M
 11000   11.0  51.8   225   14    7   9.3   5.1   30.3  86.5     1.9      M    M
 10500   12.3  54.1   220   14    7   9.5   5.2   30.2  86.4     1.9      M    M
 10250   13.0  55.4   220   14    7   8.7   4.8   30.2  86.3     1.8      M    M
 10000   13.6  56.5   225   13    7   7.8   4.3   30.1  86.1     1.7      M    M
  9750   14.2  57.6   220   13    7   7.8   4.3   29.9  85.8     1.6      M    M
  9500   14.8  58.6   210   14    7   7.8   4.3   29.7  85.5     1.4      M    M
  9250   15.3  59.5   205   14    7   7.8   4.3   29.6  85.3     1.3      M    M
  9000   15.9  60.6   200   15    8   7.8   4.3   29.5  85.0     1.1      M    M
  8750   16.5  61.7   195   14    7   7.8   4.3   29.3  84.8     1.0      M    M
  8500   17.1  62.8   195   13    7   7.8   4.3   29.2  84.5     0.8      M    M
  8250   17.6  63.7   190   12    6   7.8   4.3   29.0  84.2     0.7      M    M
  8000   18.2  64.8   185   11    6   7.8   4.3   28.9  84.0     0.5      M    M
  7750   18.8  65.8   180   12    6   7.8   4.3   28.7  83.7     0.4      M    M
  7500   19.3  66.7   170   13    7   7.7   4.2   28.5  83.4     0.2      M    M
  7250   19.9  67.8   165   14    7   8.2   4.5   28.4  83.1     0.0      M    M
  7000   20.5  68.9   160   16    8   6.4   3.5   28.2  82.8    -0.1     87  0.4
  6750   20.7  69.3   150   16    8   0.4   0.2   27.8  82.0    -0.6     72  0.4
  6500   20.6  69.1   140   17    9  -2.2  -1.2   26.9  80.4    -1.5     69  0.3
  6250   20.4  68.7   135   19   10  -1.7  -0.9   26.0  78.8    -2.4     66  0.3
  6000   20.3  68.5   125   20   11  -1.1  -0.6   25.2  77.3    -3.2     63  0.3
  5750   20.4  68.7   120   19   10   5.1   2.8   24.5  76.1    -3.9     53  0.3
  5500   21.0  69.8   115   16    8  11.1   6.1   24.5  76.0    -4.0     26  0.1
  5250   21.7  71.1   110   14    7   3.4   1.9   24.4  75.9    -4.1      M    M
  5000   21.1  70.0   100   12    6 -21.8 -12.0   23.1  73.5    -5.4     10  0.0

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

           09/27/2014 at 0900 MDT          |       09/27/2014 at 1200 MDT
                                           |
K index... +25.9  LI... -1.1               | K index... +28.4  LI... -2.7
CAPE... +147.9  CIN... -46.9               | CAPE... +322.6  CIN... -42.7
                                           |
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 -66.1 -87.0  220  38 19   1.5   0.8 | -65.7 -86.3  220  40 20   1.3   0.7
 45000 -62.4 -80.3  220  43 22   5.7   3.1 | -62.4 -80.3  220  49 25   5.2   2.8
 40000 -53.4 -64.1  225  39 20   5.4   3.0 | -54.1 -65.4  215  43 22   6.4   3.5
 38000 -50.2 -58.4  220  36 18   5.4   3.0 | -50.3 -58.5  210  38 20   6.4   3.5
 36000 -46.9 -52.4  220  33 17   5.4   3.0 | -46.4 -51.5  200  33 17   6.4   3.5
 34000 -41.9 -43.4  215  30 15   9.3   5.1 | -41.8 -43.2  200  31 16   8.3   4.5
 32000 -36.4 -33.5  215  27 14   9.3   5.1 | -36.8 -34.2  200  30 15   8.3   4.6
 30000 -31.8 -25.2  200  24 12   6.8   3.7 | -31.7 -25.1  200  30 15   8.7   4.8
 29000 -29.8 -21.6  195  23 12   6.8   3.7 | -29.1 -20.4  200  30 15   8.7   4.8
 28000 -27.8 -18.0  185  22 11   6.7   3.7 | -26.5 -15.7  200  30 16   9.0   4.9
 27000 -24.9 -12.8  185  22 11   7.8   4.3 | -23.8 -10.8  195  30 15   6.9   3.8
 26000 -22.6  -8.7  185  22 11   7.8   4.3 | -21.8  -7.2  195  30 15   7.0   3.8
 25000 -20.2  -4.4  180  22 11   7.9   4.3 | -19.7  -3.5  195  29 15   7.1   3.9
 24000 -18.0  -0.4  185  22 11   7.2   4.0 | -17.9  -0.2  190  29 15   5.7   3.1
 23000 -15.9   3.4  185  23 12   7.2   4.0 | -16.3   2.7  190  28 14   5.7   3.1
 22000 -13.7   7.3  185  23 12   7.3   4.0 | -14.6   5.7  185  27 14   5.6   3.1
 21000 -11.8  10.8  185  23 12   6.0   3.3 | -12.8   9.0  185  26 14   6.3   3.4
 20000 -10.0  14.0  180  22 11   6.0   3.3 | -10.9  12.4  180  26 13   6.3   3.4
 19500  -9.1  15.6  180  22 11   6.0   3.3 | -10.0  14.0  180  25 13   6.3   3.4
 19000  -8.3  17.1  180  22 11   6.1   3.3 |  -9.1  15.6  180  25 13   6.8   3.7
 18500  -7.4  18.7  175  22 11   6.2   3.4 |  -8.0  17.6  180  25 13   7.0   3.8
 18000  -6.5  20.3  175  22 11   6.3   3.5 |  -7.0  19.4  180  25 13   7.0   3.9
 17500  -5.6  21.9  175  21 11   6.8   3.7 |  -6.0  21.2  180  25 13   7.4   4.0
 17000  -4.6  23.7  170  20 10   6.9   3.8 |  -5.0  23.0  180  24 13   7.4   4.0
 16500  -3.7  25.3  170  19 10   7.1   3.9 |  -3.9  25.0  175  24 12   7.4   4.1
 16000  -2.6  27.3  170  18  9   7.1   3.9 |  -2.8  27.0  175  23 12   7.4   4.1
 15500  -1.6  29.1  165  17  9   7.1   3.9 |  -1.7  28.9  175  21 11   7.4   4.0
 15000  -0.6  30.9  170  16  8   7.0   3.8 |  -0.7  30.7  175  20 10   7.1   3.9
 14500   0.3  32.5  170  16  8   7.1   3.9 |   0.3  32.5  175  19 10   7.1   3.9
 14000   1.3  34.3  170  14  7   7.5   4.1 |   1.4  34.5  175  18  9   7.6   4.2
 13500   2.3  36.1  175  13  7   7.7   4.2 |   2.4  36.3  175  17  9   7.7   4.2
 13000   3.8  38.8  180  10  5   7.3   4.0 |   4.0  39.2  180  16  8   7.3   4.0
 12500   4.9  40.8  185   7  4   7.2   4.0 |   5.1  41.2  180  15  8   7.3   4.0
 12000   5.9  42.6  200   5  3   6.6   3.6 |   6.1  43.0  180  13  7   6.8   3.7
 11500   6.9  44.4  235   5  2   6.7   3.7 |   7.0  44.6  180  11  6   6.8   3.7
 11000   7.9  46.2  260   6  3   7.4   4.0 |   7.9  46.2  185   9  4   6.3   3.5
 10500   8.9  48.0  270   7  4   5.1   2.8 |   8.8  47.8  190   6  3   8.8   4.8
 10250   9.2  48.6  275   8  4   6.1   3.4 |   9.5  49.1  200   5  3   9.5   5.2
 10000   9.9  49.8  275   9  5   9.8   5.4 |  10.0  50.0  210   5  3   6.7   3.7
  9750  10.6  51.1  275  10  5   9.0   4.9 |  10.6  51.1  220   5  2   7.5   4.1
  9500  11.2  52.2  275  10  5   8.7   4.8 |  11.1  52.0  230   5  2   7.1   3.9
  9250  11.8  53.2  275  11  6   7.6   4.2 |  11.6  52.9  240   5  2   7.5   4.1
  9000  12.4  54.3  275  11  6   7.9   4.4 |  12.1  53.8  250   5  2   8.2   4.5
  8750  13.0  55.4  275  11  6   8.4   4.6 |  12.7  54.9  260   5  3   8.5   4.7
  8500  13.6  56.5  275  11  6   8.2   4.5 |  13.3  55.9  265   5  3   8.2   4.5
  8250  14.2  57.6  275  10  5   8.4   4.6 |  13.9  57.0  270   5  3   7.8   4.3
  8000  14.9  58.8  275   9  5   7.4   4.1 |  14.5  58.1  275   5  3   7.0   3.9
  7750  15.4  59.7  275   8  4   6.9   3.8 |  15.0  59.0  280   5  3   6.4   3.5
  7500  16.0  60.8  270   7  4   6.2   3.4 |  15.5  59.9  280   5  3   7.0   3.8
  7250  16.4  61.5  260   6  3   5.2   2.9 |  16.1  61.0  280   5  2   7.3   4.0
  7000  16.9  62.4  250   5  3   5.4   2.9 |  16.7  62.1  280   4  2   7.8   4.3
  6750  17.3  63.1  240   5  2   4.5   2.5 |  17.4  63.3  280   4  2   8.6   4.7
  6500  17.5  63.5  225   4  2   0.6   0.4 |  18.1  64.6  280   4  2  10.0   5.5
  6250  17.4  63.3  210   4  2  -1.6  -0.9 |  18.9  66.0  275   4  2  11.4   6.2
  6000  17.3  63.1  185   3  2  -1.0  -0.6 |  19.7  67.5  275   4  2   9.9   5.5
  5750  17.3  63.1  145   3  2  -0.1  -0.1 |  20.5  68.9  275   4  2  10.0   5.5
  5500  17.3  63.1  130   3  2   1.0   0.5 |  21.3  70.3  275   4  2  12.3   6.8
  5250  17.3  63.1  125   3  1   0.5   0.3 |  22.2  72.0  280   4  2  12.6   6.9
  5000     M     M    M   M  M     M     M |     M     M    M   M  M     M     M

           09/27/2014 at 1500 MDT          |       09/27/2014 at 1800 MDT
                                           |
K index... +26.9  LI... -2.2               | K index... +28.7  LI... -2.2
CAPE... +142.6  CIN... -118.2              | CAPE... +185.9  CIN... -92.5
                                           |
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 -65.2 -85.4  215  41 21   1.0   0.6 | -65.4 -85.7  215  39 20   1.2   0.6
 45000 -62.4 -80.3  215  56 29   4.7   2.6 | -62.8 -81.0  215  55 29   3.9   2.1
 40000 -54.8 -66.6  215  46 24   6.7   3.7 | -56.3 -69.3  210  43 22   7.9   4.3
 38000 -50.9 -59.6  205  43 22   6.6   3.6 | -51.7 -61.1  200  38 20   7.6   4.2
 36000 -46.9 -52.4  200  40 21   6.6   3.6 | -47.2 -53.0  190  34 17   7.6   4.2
 34000 -41.9 -43.4  195  36 19   8.9   4.9 | -41.8 -43.2  190  32 16   9.5   5.2
 32000 -36.6 -33.9  195  32 17   8.9   4.9 | -36.1 -33.0  190  30 15   9.5   5.2
 30000 -31.4 -24.5  195  31 16   8.6   4.7 | -31.0 -23.8  190  29 15   8.1   4.5
 29000 -28.9 -20.0  195  31 16   8.6   4.7 | -28.6 -19.5  185  30 15   8.1   4.5
 28000 -26.3 -15.3  195  32 16   8.8   4.8 | -26.2 -15.2  185  30 15   8.4   4.6
 27000 -23.7 -10.7  195  31 16   6.8   3.8 | -23.8 -10.8  180  31 16   5.9   3.2
 26000 -21.7  -7.1  195  30 15   6.9   3.8 | -22.1  -7.8  180  32 17   5.9   3.2
 25000 -19.7  -3.5  190  29 15   6.9   3.8 | -20.3  -4.5  175  34 17   5.8   3.2
 24000 -17.8  -0.0  190  29 15   6.3   3.5 | -18.3  -0.9  175  35 18   7.3   4.0
 23000 -15.9   3.4  185  30 15   6.3   3.5 | -16.2   2.8  175  36 18   7.3   4.0
 22000 -14.1   6.6  180  31 16   6.4   3.5 | -14.0   6.8  170  37 19   7.6   4.1
 21000 -12.4   9.7  175  31 16   5.6   3.1 | -12.3   9.9  170  36 18   5.6   3.0
 20000 -10.7  12.7  175  30 16   5.6   3.1 | -10.6  12.9  170  34 17   5.6   3.1
 19500  -9.9  14.2  170  30 16   5.6   3.1 |  -9.8  14.4  170  33 17   5.6   3.1
 19000  -9.1  15.6  170  30 16   6.6   3.6 |  -9.0  15.8  170  32 16   5.9   3.2
 18500  -8.0  17.6  170  29 15   7.2   3.9 |  -8.1  17.4  170  31 16   6.1   3.3
 18000  -6.9  19.6  170  29 15   7.3   4.0 |  -7.2  19.0  165  29 15   6.1   3.3
 17500  -5.9  21.4  170  28 14   6.7   3.7 |  -6.3  20.7  165  28 15   6.7   3.7
 17000  -5.0  23.0  170  27 14   6.8   3.7 |  -5.4  22.3  165  27 14   6.7   3.7
 16500  -4.0  24.8  170  27 14   7.0   3.8 |  -4.4  24.1  165  26 13   7.1   3.9
 16000  -2.9  26.8  170  26 14   7.1   3.9 |  -3.3  26.1  165  25 13   7.4   4.1
 15500  -1.9  28.6  170  26 13   7.3   4.0 |  -2.2  28.0  165  25 13   7.6   4.1
 15000  -0.7  30.7  170  25 13   8.3   4.6 |  -1.0  30.2  165  24 12   8.1   4.5
 14500   0.5  32.9  170  24 12   8.3   4.5 |   0.2  32.4  170  24 12   8.1   4.4
 14000   1.7  35.1  175  24 12   8.3   4.6 |   1.4  34.5  175  23 12   8.2   4.5
 13500   3.0  37.4  175  23 12   8.3   4.6 |   2.6  36.7  180  23 12   8.2   4.5
 13000   4.7  40.5  180  22 11   7.8   4.3 |   4.3  39.7  185  21 11   7.5   4.1
 12500   5.8  42.4  180  21 11   7.9   4.3 |   5.3  41.5  190  20 11   7.6   4.2
 12000   7.0  44.6  180  20 10   8.0   4.4 |   6.5  43.7  195  19 10   8.8   4.8
 11500   8.1  46.6  180  19 10   8.1   4.4 |   7.7  45.9  195  18 10   8.7   4.8
 11000   9.2  48.6  180  17  9   7.4   4.1 |   9.0  48.2  200  18  9   8.5   4.7
 10500  10.3  50.5  180  16  8  10.4   5.7 |  10.2  50.4  200  17  9  10.9   6.0
 10250  11.2  52.2  185  16  8  10.9   6.0 |  11.1  52.0  200  17  9  11.7   6.4
 10000  11.7  53.1  185  15  8   7.2   3.9 |  11.8  53.2  200  17  9   9.0   4.9
  9750  12.3  54.1  185  14  7   8.2   4.5 |  12.5  54.5  200  17  9   9.7   5.3
  9500  12.9  55.2  185  13  7   7.8   4.3 |  13.2  55.8  200  17  9   9.6   5.3
  9250  13.4  56.1  185  12  6   6.7   3.7 |  13.9  57.0  200  17  9   8.8   4.8
  9000  13.9  57.0  185  11  6   6.5   3.6 |  14.5  58.1  200  16  8   8.1   4.4
  8750  14.4  57.9  185   9  5   7.1   3.9 |  15.1  59.2  200  15  8   8.3   4.6
  8500  14.9  58.8  190   7  4   6.8   3.7 |  15.7  60.3  205  15  8   8.2   4.5
  8250  15.3  59.5  195   6  3   5.9   3.2 |  16.3  61.3  205  14  7   7.7   4.2
  8000  15.7  60.3  205   4  2   5.0   2.7 |  16.8  62.2  205  12  6   6.1   3.3
  7750  16.0  60.8  220   3  2   4.4   2.4 |  17.2  63.0  205  10  5   5.3   2.9
  7500  16.3  61.3  245   3  2   5.9   3.3 |  17.6  63.7  205   8  4   5.6   3.1
  7250  16.8  62.2  255   3  2   8.7   4.8 |  18.0  64.4  210   6  3   5.6   3.1
  7000  17.5  63.5  260   3  2   9.5   5.2 |  18.4  65.1  220   5  2   6.1   3.4
  6750  18.2  64.8  265   4  2   9.2   5.1 |  18.8  65.8  230   4  2   6.0   3.3
  6500  18.9  66.0  265   4  2  10.2   5.6 |  19.3  66.7  240   4  2   8.1   4.4
  6250  19.7  67.5  265   4  2  11.1   6.1 |  20.0  68.0  245   4  2  10.5   5.8
  6000  20.5  68.9  265   4  2  10.7   5.9 |  20.7  69.3  245   3  2  10.0   5.5
  5750  21.3  70.3  265   4  2  10.5   5.8 |  21.4  70.5  245   3  2   9.0   4.9
  5500  22.1  71.8  265   4  2  10.7   5.9 |  22.0  71.6  250   3  2   6.8   3.7
  5250  22.9  73.2  270   4  2  11.1   6.1 |  22.4  72.3  250   3  2   5.3   2.9
  5000     M     M    M   M  M     M     M |     M     M    M   M  M     M     M
________________________________________________________________________________

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 at Walker Field in Grand
Junction, Colorado at

                   North Latitude:  39 deg 07 min 0.000 sec
                   West Longitude: 108 deg 32 min 0.000 sec
                   Elevation: 4839 feet (1475 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.

CIN (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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