Soaring Guidance
Issued by NWS Denver/Boulder, CO

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000
UXUS97 KBOU 211312
SRGBOU

Soaring Forecast
National Weather Service Denver/Boulder, Colorado
0712 MDT Monday, July 21, 2014

This forecast is for Monday, July 21, 2014:

If the trigger temperature of 88.3 F/31.3 C is reached...then
   Thermal Soaring Index....................... Excellent
   Maximum rate of lift........................ 1328 ft/min (6.7 m/s)
   Maximum height of thermals.................. 19351 ft MSL (14066 ft AGL)

Forecast maximum temperature................... 98.0 F/37.1 C
Time of trigger temperature.................... 1000 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................. 16052 ft MSL (10766 ft AGL)
Thermal soaring outlook for Tuesday 07/22...... 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....................... 18059 ft MSL (12774 ft AGL)
Wave soaring outlook for Tuesday 07/22......... Poor

Remarks...

Sunrise/Sunset.................... 05:48:52 / 20:23:07 MDT
Total possible sunshine........... 14 hr 34 min 15 sec (874 min 15 sec)
Altitude of sun at 13:05:52 MDT... 70.58 degrees

Upper air data from rawinsonde observation taken on 07/21/2014 at 0600 MDT

Freezing level.................. 16638 ft MSL (11353 ft AGL)
Convective condensation level... 18921 ft MSL (13636 ft AGL)
Lifted condensation level....... 19330 ft MSL (14045 ft AGL)
Lifted index.................... -2.0
K index......................... +18.8

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  -67.5 -89.5   290   12    6  -1.3  -0.7   79.4 174.9    24.9      M    M
 45000  -63.1 -81.6   265   43   22   6.2   3.4   62.5 144.5    16.2      M    M
 40000  -52.6 -62.7   260   73   38   8.5   4.6   54.8 130.7    12.2      M    M
 38000  -47.8 -54.0   255   69   36   8.1   4.5   53.2 127.7    11.4      M    M
 36000  -42.9 -45.2   255   65   33   8.6   4.7   52.2 125.9    11.0      M    M
 34000  -38.7 -37.7   250   59   30   7.9   4.3   49.9 121.9     9.6      M    M
 32000  -33.5 -28.3   240   54   28   8.7   4.8   48.9 120.1     9.1      M    M
 30000  -28.6 -19.5   240   48   25   6.6   3.6   47.7 117.9     8.4      M    M
 29000  -28.1 -18.6   240   44   23   6.5   3.6   44.7 112.4     6.1      M    M
 28000  -25.1 -13.2   240   38   20   8.1   4.5   43.7 110.7     5.4      M    M
 27000  -22.7  -8.9   240   34   17   8.1   4.5   43.2 109.7     5.0      M    M
 26000  -20.3  -4.5   235   29   15   6.4   3.5   42.7 108.8     4.6      M    M
 25000  -18.9  -2.0   235   24   12   7.1   3.9   40.9 105.6     3.2      M    M
 24000  -16.3   2.7   235   24   12   8.9   4.9   40.3 104.6     2.8      M    M
 23000  -13.6   7.5   235   24   12   8.9   4.9   39.9 103.8     2.4      M    M
 22000  -11.0  12.2   240   24   12   8.9   4.9   39.6 103.3     2.2      M    M
 21000   -8.3  17.1   240   24   12   8.9   4.9   39.4 103.0     2.1      M    M
 20000   -6.2  20.8   240   24   12   2.8   1.5   38.6 101.5     1.3      M    M
 19500   -5.8  21.6   240   24   12   3.6   2.0   37.4  99.4     0.3      M    M
 19000   -5.2  22.6   240   23   12   5.5   3.0   36.5  97.7    -0.5   1307  6.6
 18500   -4.1  24.6   235   22   11   7.3   4.0   36.0  96.8    -1.0   1261  6.4
 18000   -3.1  26.4   235   21   11   7.3   4.0   35.6  96.1    -1.3   1215  6.2
 17500   -2.0  28.4   240   20   10   7.3   4.0   35.2  95.3    -1.8   1168  5.9
 17000   -0.9  30.4   245   19   10   7.3   4.0   34.8  94.6    -2.2   1121  5.7
 16500    0.1  32.2   250   18   10   7.4   4.0   34.4  93.8    -2.6   1075  5.5
 16000    1.2  34.2   260   18    9   7.4   4.1   34.0  93.2    -3.0   1028  5.2
 15500    2.2  36.0   265   18    9   8.0   4.4   33.6  92.5    -3.4    982  5.0
 15000    3.6  38.5   270   17    9   9.3   5.1   33.5  92.2    -3.5    926  4.7
 14500    5.0  41.0   270   17    9   9.3   5.1   33.4  92.1    -3.6    869  4.4
 14000    7.1  44.8   265   16    8   8.8   4.8   33.2  91.8    -3.7    786  4.0
 13500    8.3  46.9   270   15    8   8.9   4.9   33.1  91.6    -3.9    733  3.7
 13000    9.6  49.3   270   14    7   8.9   4.9   33.0  91.4    -4.1    680  3.5
 12500   10.9  51.6   275   14    7   8.9   4.9   32.9  91.1    -4.3    626  3.2
 12000   12.2  54.0   280   13    7   8.9   4.9   32.7  90.9    -4.4    571  2.9
 11500   13.6  56.5   285   12    6   8.9   4.9   32.6  90.7    -4.6    516  2.6
 11000   14.9  58.8   290   11    6   8.9   4.9   32.5  90.5    -4.7    462  2.3
 10500   16.2  61.2   285   11    6   9.0   4.9   32.4  90.2    -4.9    407  2.1
 10250   16.9  62.4   280   12    6   9.0   5.0   32.3  90.2    -4.9    380  1.9
 10000   17.6  63.7   275   12    6   9.0   5.0   32.3  90.1    -5.0    353  1.8
  9750   18.2  64.8   275   13    7   9.0   5.0   32.2  90.0    -5.1    325  1.7
  9500   18.9  66.0   275   14    7   9.0   5.0   32.2  89.9    -5.2    298  1.5
  9250   19.5  67.1   275   14    7   9.0   5.0   32.1  89.8    -5.2    271  1.4
  9000   20.2  68.4   275   15    8   9.0   5.0   32.1  89.7    -5.3    244  1.2
  8750   20.9  69.6   275   14    7   9.0   5.0   32.0  89.6    -5.4    216  1.1
  8500   21.5  70.7   275   14    7   9.0   5.0   32.0  89.5    -5.4    189  1.0
  8250   22.2  72.0   275   13    7   9.0   5.0   31.9  89.4    -5.5    162  0.8
  8000   22.9  73.2   275   13    7   9.1   5.0   31.9  89.3    -5.6    134  0.7
  7750   23.5  74.3   275   14    7   8.8   4.8   31.8  89.2    -5.7    107  0.5
  7500   24.2  75.6   270   14    7   9.8   5.4   31.7  89.1    -5.8     80  0.4
  7250   24.8  76.6   270   14    7   3.2   1.7   31.6  88.9    -5.9     55  0.3
  7000   24.7  76.5   270   15    8  -2.6  -1.4   30.8  87.4    -6.8     51  0.3
  6750   24.5  76.1   265   13    7  -1.4  -0.7   29.9  85.8    -7.7     48  0.2
  6500   24.4  75.9   255   12    6   1.7   0.9   29.1  84.4    -8.5     43  0.2
  6250   24.7  76.5   245   11    6   4.0   2.2   28.7  83.6    -9.0     29  0.1
  6000   24.9  76.8   230   10    5   5.1   2.8   28.2  82.8    -9.5     15  0.1
  5750   25.1  77.2   230    7    4  -1.3  -0.7   27.8  82.0   -10.0      0  0.0
  5500   23.8  74.8   230    3    2 -37.6 -20.7   25.8  78.5   -12.2     34  0.2

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

           07/21/2014 at 0900 MDT          |       07/21/2014 at 1200 MDT
                                           |
K index... +22.5  LI... -0.4               | K index... +23.1  LI... -1.6
CAPE... +88.1  CIN... -157.8               | CAPE... +163.7  CIN... -18.8
                                           |
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 -65.4 -85.7  245  25 13   1.7   0.9 | -65.3 -85.5  230  25 13   1.8   1.0
 45000 -61.0 -77.8  255  43 22   5.3   2.9 | -60.8 -77.4  240  40 21   5.5   3.0
 40000 -52.0 -61.6  255  70 36   7.8   4.3 | -51.6 -60.9  255  67 35   7.5   4.1
 38000 -47.4 -53.3  255  65 33   7.7   4.3 | -47.1 -52.8  245  62 32   7.5   4.1
 36000 -42.8 -45.0  250  60 31   7.7   4.2 | -42.6 -44.7  240  58 30   7.5   4.1
 34000 -38.2 -36.8  245  53 27   7.6   4.2 | -38.1 -36.6  240  54 28   7.4   4.1
 32000 -33.6 -28.5  240  46 24   8.1   4.5 | -33.7 -28.7  240  51 26   8.2   4.5
 30000 -28.7 -19.7  230  42 22   8.3   4.6 | -28.8 -19.8  235  47 24   8.4   4.6
 29000 -25.7 -14.3  225  40 21   8.3   4.6 | -25.7 -14.3  230  45 23   8.4   4.6
 28000 -23.7 -10.7  225  38 20   3.1   1.7 | -23.6 -10.5  230  42 21   4.1   2.3
 27000 -22.7  -8.9  230  35 18   3.4   1.9 | -22.3  -8.1  235  37 19   4.4   2.4
 26000 -21.7  -7.1  235  32 17   3.4   1.9 | -21.0  -5.8  240  32 16   4.4   2.4
 25000 -20.5  -4.9  245  30 15   7.5   4.1 | -19.7  -3.5  245  27 14   6.4   3.5
 24000 -17.8  -0.0  240  29 15   9.1   5.0 | -17.6   0.3  240  26 13   7.2   3.9
 23000 -15.1   4.8  240  28 14   9.1   5.0 | -15.5   4.1  240  24 12   7.2   4.0
 22000 -12.5   9.5  235  27 14   7.6   4.2 | -13.3   8.1  240  22 12   7.3   4.0
 21000 -10.3  13.5  235  25 13   7.4   4.0 | -11.2  11.8  240  21 11   7.3   4.0
 20000  -8.2  17.2  240  24 12   7.4   4.0 |  -9.0  15.8  245  19 10   7.3   4.0
 19500  -7.1  19.2  240  23 12   7.2   4.0 |  -7.9  17.8  245  19 10   7.5   4.1
 19000  -6.0  21.2  240  22 11   6.9   3.8 |  -6.8  19.8  250  17  9   7.9   4.3
 18500  -5.0  23.0  245  20 10   6.8   3.7 |  -5.6  21.9  255  16  8   7.9   4.3
 18000  -3.9  25.0  250  19 10   8.5   4.7 |  -4.4  24.1  255  15  8   8.3   4.5
 17500  -2.6  27.3  250  18  9   8.7   4.8 |  -3.2  26.2  260  15  8   8.3   4.6
 17000  -1.4  29.5  255  17  9   8.7   4.7 |  -1.9  28.6  260  15  8   8.3   4.6
 16500  -0.1  31.8  260  16  8   8.4   4.6 |  -0.7  30.7  265  15  8   8.4   4.6
 16000   1.1  34.0  265  16  8   8.4   4.6 |   0.5  32.9  270  14  7   8.3   4.5
 15500   2.3  36.1  270  15  8   8.3   4.5 |   1.8  35.2  270  14  7   9.2   5.0
 15000   3.5  38.3  275  14  7   8.3   4.6 |   3.1  37.6  275  14  7   9.1   5.0
 14500   5.3  41.5  285  13  7   8.4   4.6 |   5.2  41.4  275  14  7   9.2   5.1
 14000   6.6  43.9  290  12  6   8.4   4.6 |   6.5  43.7  280  14  7   9.2   5.1
 13500   7.9  46.2  295  12  6   9.1   5.0 |   7.9  46.2  280  14  7   9.0   5.0
 13000   9.2  48.6  300  11  6   9.0   5.0 |   9.2  48.6  280  15  7   9.0   5.0
 12500  10.5  50.9  300  11  6   9.1   5.0 |  10.5  50.9  280  14  7   9.5   5.2
 12000  11.9  53.4  300  11  6   9.1   5.0 |  11.9  53.4  280  14  7   9.6   5.3
 11500  13.2  55.8  300  11  6   9.1   5.0 |  13.3  55.9  285  14  7   9.1   5.0
 11000  14.6  58.3  300  11  6   9.1   5.0 |  14.6  58.3  285  13  7   9.1   5.0
 10500  15.8  60.4  300  11  6   5.0   2.7 |  15.8  60.4  285  13  7   5.2   2.9
 10250  16.1  61.0  300  11  6   7.8   4.3 |  16.2  61.2  280  12  6   8.5   4.7
 10000  17.0  62.6  300  11  5  12.1   6.6 |  17.0  62.6  280  11  6  11.9   6.5
  9750  17.8  64.0  300  10  5  11.0   6.0 |  17.8  64.0  280  10  5  10.8   5.9
  9500  18.6  65.5  305  10  5   8.9   4.9 |  18.6  65.5  280   9  5   8.3   4.6
  9250  19.1  66.4  305   9  5   8.3   4.6 |  19.1  66.4  280   8  4   8.4   4.6
  9000  19.9  67.8  305   9  5  10.7   5.9 |  19.8  67.6  280   8  4  11.4   6.2
  8750  20.7  69.3  305   8  4  10.8   5.9 |  20.7  69.3  280   7  4  11.2   6.1
  8500  21.4  70.5  305   8  4   9.7   5.3 |  21.5  70.7  280   7  3  10.0   5.5
  8250  22.1  71.8  305   7  4   9.1   5.0 |  22.1  71.8  275   6  3   9.3   5.1
  8000  22.8  73.0  305   7  4   9.3   5.1 |  22.8  73.0  275   6  3  10.1   5.5
  7750  23.5  74.3  305   7  4   9.0   4.9 |  23.6  74.5  280   6  3  10.4   5.7
  7500  24.1  75.4  305   7  4   8.5   4.7 |  24.4  75.9  280   6  3  10.0   5.5
  7250  24.8  76.6  305   8  4   7.9   4.3 |  25.1  77.2  275   6  3  10.1   5.5
  7000  25.4  77.7  305   9  5   9.4   5.2 |  25.9  78.6  275   6  3   9.9   5.4
  6750  26.0  78.8  305  10  5   5.0   2.8 |  26.6  79.9  280   6  3  10.1   5.5
  6500  26.0  78.8  300   9  5  -1.4  -0.8 |  27.4  81.3  275   6  3  10.6   5.8
  6250  25.8  78.4  295   7  4   0.2   0.1 |  28.2  82.8  275   6  3  10.1   5.6
  6000  25.6  78.1  280   6  3  -4.4  -2.4 |  28.9  84.0  275   6  3  11.6   6.4
  5750  25.2  77.4  255   5  3   0.4   0.2 |  29.9  85.8  280   5  3  16.0   8.8
  5500  25.9  78.6  240   4  2  22.0  12.1 |  31.3  88.3  280   5  3  18.9  10.4

           07/21/2014 at 1500 MDT          |       07/21/2014 at 1800 MDT
                                           |
K index... +24.1  LI... -0.5               | K index... +25.2  LI... -1.1
CAPE... +64.6  CIN... -30.8                | CAPE... +100.2  CIN... -32.9
                                           |
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 -66.2 -87.2  225  32 17   2.0   1.1 | -66.3 -87.3  235  29 15   1.4   0.8
 45000 -60.5 -76.9  240  46 24   6.4   3.5 | -61.0 -77.8  245  44 23   6.7   3.7
 40000 -50.7 -59.3  255  65 33   7.3   4.0 | -50.7 -59.3  255  65 34   7.5   4.1
 38000 -46.3 -51.3  250  62 32   7.3   4.0 | -46.2 -51.2  250  64 33   7.5   4.1
 36000 -41.9 -43.4  240  60 31   7.4   4.1 | -41.7 -43.1  245  63 32   7.4   4.1
 34000 -37.4 -35.3  240  57 29   7.5   4.1 | -37.3 -35.1  240  56 29   7.4   4.0
 32000 -32.9 -27.2  240  54 28   8.2   4.5 | -32.9 -27.2  235  50 26   8.0   4.4
 30000 -28.0 -18.4  235  49 25   7.2   4.0 | -28.4 -19.1  240  44 22   6.7   3.7
 29000 -25.9 -14.6  235  47 24   7.2   4.0 | -26.3 -15.3  240  41 21   6.7   3.7
 28000 -23.9 -11.0  235  44 23   5.7   3.1 | -24.3 -11.7  245  37 19   6.7   3.7
 27000 -22.2  -8.0  235  38 20   5.8   3.2 | -22.3  -8.1  245  33 17   6.7   3.7
 26000 -20.5  -4.9  235  33 17   5.8   3.2 | -20.3  -4.5  250  29 15   6.7   3.7
 25000 -18.7  -1.7  235  28 14   6.8   3.7 | -18.3  -0.9  255  26 13   7.0   3.9
 24000 -16.6   2.1  240  26 14   7.2   3.9 | -16.2   2.8  260  25 13   7.1   3.9
 23000 -14.5   5.9  245  25 13   7.2   3.9 | -14.0   6.8  260  23 12   7.1   3.9
 22000 -12.3   9.9  250  23 12   7.2   3.9 | -12.0  10.4  265  22 11   6.6   3.6
 21000 -10.2  13.6  255  21 11   7.2   3.9 | -10.1  13.8  270  22 11   6.6   3.6
 20000  -8.1  17.4  260  19 10   7.2   3.9 |  -8.2  17.2  275  22 11   6.8   3.7
 19500  -7.0  19.4  265  19 10   7.4   4.0 |  -7.2  19.0  280  22 11   7.4   4.0
 19000  -5.9  21.4  270  18  9   7.8   4.3 |  -6.1  21.0  280  21 11   8.2   4.5
 18500  -4.7  23.5  275  17  9   7.9   4.3 |  -4.9  23.2  285  20 10   8.3   4.5
 18000  -3.6  25.5  280  16  8   7.6   4.2 |  -3.7  25.3  285  18  9   8.4   4.6
 17500  -2.5  27.5  285  16  8   7.7   4.2 |  -2.5  27.5  290  17  9   8.5   4.6
 17000  -1.4  29.5  285  16  8   7.8   4.3 |  -1.3  29.7  290  16  8   8.7   4.8
 16500  -0.2  31.6  285  15  8   8.2   4.5 |   0.1  32.2  295  15  8   9.2   5.1
 16000   0.9  33.6  285  14  7   8.2   4.5 |   1.4  34.5  295  14  7   9.2   5.0
 15500   2.2  36.0  285  13  7   9.0   4.9 |   2.8  37.0  295  13  7   9.5   5.2
 15000   4.1  39.4  285  11  6   8.9   4.9 |   4.9  40.8  295  11  6   9.4   5.2
 14500   5.5  41.9  280  11  5   9.5   5.2 |   6.2  43.2  295  10  5   9.1   5.0
 14000   6.9  44.4  280  10  5   9.5   5.2 |   7.6  45.7  290   9  5   9.2   5.0
 13500   8.3  46.9  275  10  5   9.2   5.1 |   9.0  48.2  290   8  4   9.2   5.1
 13000   9.6  49.3  270   9  5   9.2   5.1 |  10.3  50.5  285   7  3   9.2   5.1
 12500  11.0  51.8  270   9  4   9.6   5.2 |  11.7  53.1  280   6  3   9.4   5.1
 12000  12.5  54.5  265   8  4   9.6   5.3 |  13.1  55.6  275   5  2   9.4   5.2
 11500  13.9  57.0  255   7  4   9.2   5.1 |  14.5  58.1  265   4  2   9.1   5.0
 11000  15.2  59.4  250   6  3   9.3   5.1 |  15.9  60.6  250   4  2   9.2   5.1
 10500  16.4  61.5  240   6  3   4.4   2.4 |  17.0  62.6  240   4  2   4.7   2.6
 10250  16.8  62.2  235   6  3   7.9   4.3 |  17.4  63.3  235   4  2   8.3   4.6
 10000  17.6  63.7  230   6  3  12.4   6.8 |  18.2  64.8  225   4  2  12.1   6.6
  9750  18.5  65.3  225   6  3  11.2   6.2 |  19.1  66.4  215   5  3  11.0   6.1
  9500  19.2  66.6  215   6  3   8.2   4.5 |  19.8  67.6  210   5  3   7.9   4.3
  9250  19.7  67.5  215   6  3   7.5   4.1 |  20.3  68.5  205   6  3   7.6   4.2
  9000  20.4  68.7  215   6  3  10.4   5.7 |  21.0  69.8  205   6  3  10.7   5.9
  8750  21.2  70.2  210   7  3  10.3   5.6 |  21.8  71.2  205   6  3  10.5   5.7
  8500  21.9  71.4  210   7  3   9.5   5.2 |  22.5  72.5  205   6  3   9.7   5.3
  8250  22.6  72.7  210   7  3   8.9   4.9 |  23.2  73.8  205   6  3   9.2   5.1
  8000  23.2  73.8  210   7  3   9.7   5.3 |  24.0  75.2  205   6  3   9.9   5.4
  7750  24.0  75.2  210   7  3  10.2   5.6 |  24.7  76.5  205   6  3  10.2   5.6
  7500  24.7  76.5  210   7  3  10.0   5.5 |  25.5  77.9  205   6  3  10.2   5.6
  7250  25.5  77.9  210   7  3   9.9   5.4 |  26.2  79.2  205   6  3  10.3   5.6
  7000  26.2  79.2  210   7  3  10.0   5.5 |  27.0  80.6  205   6  3  10.1   5.6
  6750  26.9  80.4  215   7  3  10.3   5.6 |  27.7  81.9  205   6  3  10.2   5.6
  6500  27.7  81.9  215   6  3  10.3   5.7 |  28.5  83.3  205   6  3  10.3   5.7
  6250  28.5  83.3  215   6  3  10.4   5.7 |  29.3  84.7  210   6  3  10.7   5.9
  6000  29.3  84.7  215   6  3  10.1   5.6 |  30.0  86.0  210   6  3   9.3   5.1
  5750  30.0  86.0  215   6  3  12.2   6.7 |  30.8  87.4  210   6  3  11.8   6.5
  5500  31.1  88.0  215   6  3  16.3   9.0 |  31.9  89.4  210   5  3  20.1  11.0
________________________________________________________________________________

This product is issued twice per day, once by approximately 0630 MST/0730 MDT
(1330 UTC) and again by approximately 1830 MST/1930 MDT (0130 UTC).  It is not
continuously monitored nor updated after its initial issuance.

The information contained herein is based on rawinsonde observation and/or
numerical weather prediction model data taken near the old Stapleton
Airport site in Denver, Colorado at

                   North Latitude:  39 deg 46 min 5.016 sec
                   West Longitude: 104 deg 52 min 9.984 sec
                   Elevation: 5285 feet (1611 meters)

and may not be representative of other areas along the Front Range of the
Colorado Rocky Mountains.  Note that some elevations in numerical weather
prediction models differ from actual station elevations, which can lead to
data which appear to be below ground.  Erroneous data such as these should
not be used.

The content and format of this report as well as the issuance times are subject
to change without prior notice.  Comments and suggestions are welcome and should
be directed to one of the addresses or phone numbers shown at the bottom of this
page.  To expedite a response to comments, be sure to mention your interest in
the soaring forecast.

DEFINITIONS:

CAPE (Convective Available Potential Energy) - An integrated measure of the
     energy available for convective development, also known as the positive
     area on a thermodynamic diagram.  Units are Joules per kilogram.  Larger
     values are indicative of greater instability and the possibility of
     stronger convective activity, including thunderstorms.  Values around or
     greater than 1000 suggest the possibility of severe weather should
     convective activity develop.

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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