Soaring Guidance
Issued by NWS Denver/Boulder, CO

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000
UXUS97 KBOU 240042
SRGBOU

Soaring Forecast
National Weather Service Denver/Boulder, Colorado
1842 MDT Saturday, August 23, 2014

This forecast is for Sunday, August 24, 2014:

If the trigger temperature of 73.6 F/23.1 C is reached...then
   Thermal Soaring Index....................... Good
   Maximum rate of lift........................ 595 ft/min (3.0 m/s)
   Maximum height of thermals.................. 12661 ft MSL (7376 ft AGL)

Forecast maximum temperature................... 79.0 F/26.6 C
Time of trigger temperature.................... None
Time of overdevelopment........................ None
Middle/high clouds during soaring window....... Broken/overcast thin middle
Surface winds during soaring window............ 20 mph or less
Height of the -3 thermal index................. 9230 ft MSL (3944 ft AGL)
Thermal soaring outlook for Monday 08/25....... Good

Wave Soaring Index............................. Poor
Wave Soaring Index trend (to 1800 MDT)......... No change
Height of stable layer (12-18K ft MSL)......... 16619 ft MSL (11334 ft AGL)
Weak PVA/NVA (through 1800 MDT)................ Weak NVA
Potential height of wave....................... 18343 ft MSL (13058 ft AGL)
Wave soaring outlook for Monday 08/25.......... Fair

Remarks...

Sunrise/Sunset.................... 06:19:05 / 19:45:38 MDT
Total possible sunshine........... 13 hr 26 min 33 sec (806 min 33 sec)
Altitude of sun at 13:01:58 MDT... 61.50 degrees

Upper air data from rawinsonde observation taken on 08/23/2014 at 0600 MDT

Freezing level.................. 14261 ft MSL (8976 ft AGL)
Convective condensation level... 12110 ft MSL (6825 ft AGL)
Lifted condensation level....... 12283 ft MSL (6997 ft AGL)
Lifted index.................... -2.9
K index......................... +26.3

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  -63.8 -82.8   215   33   17  -5.7  -3.1   86.1 186.9    35.0      M    M
 45000  -59.5 -75.1   210   43   22   4.2   2.3   69.0 156.2    26.8      M    M
 40000  -51.1 -60.0   195   54   28   5.2   2.8   59.2 138.6    22.1      M    M
 38000  -46.7 -52.1   190   62   32   7.8   4.3   57.0 134.5    21.2      M    M
 36000  -42.0 -43.6   185   59   30   8.1   4.4   55.4 131.8    20.6      M    M
 34000  -38.7 -37.7   195   35   18   5.1   2.8   51.9 125.4    18.6      M    M
 32000  -35.2 -31.4   245   27   14   6.3   3.5   47.6 117.7    16.0      M    M
 30000  -32.0 -25.6   235   26   13   5.6   3.0   44.2 111.5    13.7      M    M
 29000  -30.1 -22.2   250   25   13   6.2   3.4   42.8 109.1    12.8      M    M
 28000  -27.7 -17.9   215   22   11   8.6   4.7   42.1 107.9    12.5      M    M
 27000  -25.3 -13.5   210   24   12   7.9   4.3   41.5 106.7    12.1      M    M
 26000  -23.0  -9.4   205   27   14   7.6   4.1   40.6 105.1    11.5      M    M
 25000  -20.8  -5.4   200   29   15   7.7   4.2   39.9 103.8    11.0      M    M
 24000  -18.6  -1.5   205   22   11   7.5   4.1   39.1 102.3    10.4      M    M
 23000  -16.0   3.2   210   18    9   6.9   3.8   38.6 101.5    10.1      M    M
 22000  -14.1   6.6   215   15    8   8.3   4.5   37.5  99.5     9.2      M    M
 21000  -11.7  10.9   230   12    6   8.3   4.5   36.9  98.5     8.8      M    M
 20000   -9.4  15.1   235   13    7   7.6   4.2   36.2  97.2     8.3      M    M
 19500   -8.3  17.1   230   16    8   6.7   3.7   35.7  96.3     7.9      M    M
 19000   -7.3  18.9   230   19   10   7.4   4.0   35.2  95.4     7.4      M    M
 18500   -6.2  20.8   230   20   10   8.1   4.5   34.9  94.9     7.2      M    M
 18000   -5.2  22.6   230   21   11   5.4   2.9   34.4  93.9     6.7      M    M
 17500   -4.4  24.1   230   20   10   5.6   3.1   33.7  92.6     6.1      M    M
 17000   -3.6  25.5   225   18    9   6.1   3.3   33.0  91.3     5.5      M    M
 16500   -3.0  26.6   225   16    8   1.2   0.6   32.0  89.6     4.6      M    M
 16000   -2.3  27.9   220   14    7   5.3   2.9   30.4  86.7     3.2      M    M
 15500   -1.6  29.1   230   13    7   4.7   2.6   29.6  85.4     2.5      M    M
 15000   -1.1  30.0   240   12    6   3.7   2.0   28.7  83.6     1.5      M    M
 14500   -0.4  31.3   245   12    6   7.7   4.2   27.9  82.3     0.8      M    M
 14000    0.9  33.6   255   12    6   8.3   4.5   27.7  81.9     0.6      M    M
 13500    2.1  35.8   255   10    5   8.3   4.6   27.5  81.4     0.3      M    M
 13000    3.3  37.9   255    9    5   8.3   4.6   27.2  81.0     0.1      M    M
 12500    4.6  40.3   250    7    4   8.3   4.6   27.0  80.7    -0.1    570  2.9
 12000    5.8  42.4   250    6    3   8.3   4.6   26.9  80.3    -0.3    519  2.6
 11500    7.0  44.6   265    6    3   8.3   4.6   26.6  79.9    -0.6    467  2.4
 11000    8.3  46.9   280    7    3   8.3   4.6   26.4  79.4    -0.8    415  2.1
 10500    9.5  49.1   290    7    4   8.1   4.4   26.1  79.1    -1.0    363  1.8
 10250   10.1  50.2   295    8    4   8.2   4.5   26.0  78.8    -1.1    337  1.7
 10000   10.6  51.1   285    7    3   5.4   3.0   25.8  78.5    -1.3    314  1.6
  9750   10.8  51.4   275    6    3   3.2   1.7   25.3  77.6    -1.9    301  1.5
  9500   11.0  51.8   255    5    2   3.1   1.7   24.8  76.7    -2.5    288  1.5
  9250   11.2  52.2   235    5    2   5.9   3.3   24.4  75.8    -3.0    276  1.4
  9000   11.9  53.4   215    5    3   9.4   5.1   24.3  75.7    -3.0    247  1.3
  8750   12.6  54.7   215    4    2   7.5   4.1   24.2  75.5    -3.1    219  1.1
  8500   13.0  55.4   210    3    1   6.6   3.6   23.9  75.1    -3.4    199  1.0
  8250   13.3  55.9   205    2    1   5.5   3.0   23.7  74.6    -3.8    182  0.9
  8000   13.6  56.5   190    1    1   4.0   2.2   23.3  73.9    -4.3    167  0.8
  7750   13.8  56.8   195    2    1   3.8   2.1   22.8  73.0    -4.8    152  0.8
  7500   14.1  57.4   195    3    2   4.4   2.4   22.3  72.2    -5.3    137  0.7
  7250   14.4  57.9   195    5    2   2.3   1.3   21.9  71.4    -5.8    122  0.6
  7000   14.3  57.7   195    6    3  -1.4  -0.8   21.2  70.1    -6.5    115  0.6
  6750   14.2  57.6   195    6    3   1.5   0.8   20.4  68.7    -7.4    111  0.6
  6500   14.5  58.1   195    6    3   6.7   3.7   20.0  67.9    -7.8     95  0.5
  6250   15.0  59.0   200    5    3   6.8   3.7   19.8  67.6    -8.1     73  0.4
  6000   15.5  59.9   200    5    3   9.1   5.0   19.6  67.3    -8.4     51  0.3
  5750   16.0  60.8   200    3    2  -0.0  -0.0   19.4  66.9    -8.7     29  0.1
  5500   15.1  59.2   200    2    1 -23.7 -13.0   17.7  63.9   -10.3     48  0.2

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

           08/23/2014 at 0900 MDT          |       08/23/2014 at 1200 MDT
                                           |
K index... +25.8  LI... -0.5               | K index... +25.6  LI... -5.1
CAPE... +98.8  CIN... -112.1               | CAPE... +1119.7  CIN... -14.3
                                           |
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 -62.3 -80.1  195  29 15   1.2   0.7 | -61.9 -79.4  200  29 15   1.0   0.5
 45000 -58.7 -73.7  200  44 23   5.1   2.8 | -58.8 -73.8  200  41 21   4.7   2.6
 40000 -51.0 -59.8  205  51 26   6.5   3.6 | -51.6 -60.9  220  40 20   5.9   3.3
 38000 -47.1 -52.8  210  50 26   6.4   3.5 | -48.1 -54.6  230  40 21   5.9   3.2
 36000 -43.3 -45.9  210  49 25   6.4   3.5 | -44.6 -48.3  235  42 22   5.9   3.2
 34000 -39.8 -39.6  215  44 23   5.6   3.1 | -40.6 -41.1  245  42 22   7.0   3.8
 32000 -36.4 -33.5  220  38 19   5.6   3.1 | -36.5 -33.7  260  43 22   7.0   3.8
 30000 -32.2 -26.0  225  34 17   6.7   3.7 | -31.2 -24.2  260  41 21   8.3   4.5
 29000 -30.1 -22.2  225  33 17   6.8   3.7 | -28.7 -19.7  255  40 20   8.3   4.5
 28000 -28.1 -18.6  230  32 16   7.0   3.8 | -26.2 -15.2  255  39 20   8.1   4.4
 27000 -25.7 -14.3  230  31 16   8.2   4.5 | -24.0 -11.2  250  37 19   7.4   4.0
 26000 -23.3  -9.9  230  30 15   8.2   4.5 | -21.8  -7.2  245  35 18   7.4   4.1
 25000 -20.8  -5.4  230  29 15   8.2   4.5 | -19.6  -3.3  240  33 17   7.5   4.1
 24000 -18.6  -1.5  230  27 14   7.4   4.1 | -17.6   0.3  240  30 16   6.3   3.5
 23000 -16.4   2.5  225  26 13   7.5   4.1 | -15.8   3.6  235  27 14   6.4   3.5
 22000 -14.2   6.4  225  24 12   7.6   4.2 | -13.9   7.0  235  25 13   6.4   3.5
 21000 -12.1  10.2  225  23 12   6.7   3.7 | -12.2  10.0  235  23 12   5.8   3.2
 20000 -10.1  13.8  230  21 11   6.8   3.7 | -10.5  13.1  235  22 11   5.8   3.2
 19500  -9.1  15.6  235  21 11   6.8   3.7 |  -9.7  14.5  235  22 11   5.9   3.2
 19000  -8.2  17.2  240  20 10   6.6   3.6 |  -8.8  16.2  235  21 11   6.1   3.3
 18500  -7.2  19.0  240  20 10   6.4   3.5 |  -7.9  17.8  235  21 11   6.4   3.5
 18000  -6.3  20.7  240  20 10   6.5   3.5 |  -7.0  19.4  240  21 11   6.4   3.5
 17500  -5.4  22.3  240  20 10   5.9   3.2 |  -6.1  21.0  240  20 11   6.5   3.6
 17000  -4.6  23.7  240  19 10   5.9   3.2 |  -5.1  22.8  245  20 10   6.5   3.6
 16500  -3.7  25.3  235  19 10   5.7   3.1 |  -4.2  24.4  250  20 10   6.6   3.6
 16000  -3.0  26.6  235  17  9   5.5   3.0 |  -3.2  26.2  250  19 10   6.6   3.6
 15500  -2.2  28.0  235  16  8   5.6   3.1 |  -2.3  27.9  255  18  9   6.7   3.7
 15000  -1.0  30.2  230  14  7   6.1   3.4 |  -0.8  30.6  255  17  9   7.0   3.8
 14500  -0.2  31.6  225  12  6   6.5   3.6 |   0.2  32.4  255  16  8   7.4   4.0
 14000   0.9  33.6  225  11  5   7.5   4.1 |   1.4  34.5  255  14  7   8.4   4.6
 13500   2.0  35.6  225   9  5   7.5   4.1 |   2.7  36.9  250  13  7   8.3   4.6
 13000   3.1  37.6  225   7  4   8.2   4.5 |   3.8  38.8  250  12  6   7.6   4.2
 12500   4.3  39.7  230   5  3   8.1   4.5 |   4.9  40.8  245  10  5   7.6   4.2
 12000   5.5  41.9  240   5  3   8.1   4.4 |   6.1  43.0  240   8  4   7.8   4.3
 11500   6.7  44.1  245   6  3   8.3   4.6 |   7.2  45.0  235   7  3   8.0   4.4
 11000   7.8  46.0  250   7  4   5.9   3.3 |   8.3  46.9  230   5  3   6.2   3.4
 10500   8.7  47.7  255   9  5   5.4   3.0 |   9.2  48.6  225   4  2   6.9   3.8
 10250   9.2  48.6  255  10  5   8.9   4.9 |   9.8  49.6  220   3  2  10.1   5.5
 10000   9.9  49.8  260  10  5   9.4   5.1 |  10.6  51.1  215   3  2  10.1   5.5
  9750  10.4  50.7  265  10  5   6.3   3.4 |  11.2  52.2  215   3  2   8.3   4.6
  9500  10.9  51.6  265  11  6   7.1   3.9 |  11.9  53.4  215   3  2   9.1   5.0
  9250  11.4  52.5  270  11  6   6.9   3.8 |  12.5  54.5  210   3  2   7.6   4.2
  9000  11.9  53.4  270  11  5   7.3   4.0 |  13.0  55.4  210   3  1   6.7   3.7
  8750  12.4  54.3  275  10  5   7.6   4.2 |  13.4  56.1  200   2  1   7.5   4.1
  8500  13.0  55.4  275  10  5   7.5   4.1 |  13.9  57.0  190   2  1   7.3   4.0
  8250  13.5  56.3  280  10  5   8.1   4.4 |  14.3  57.7  175   2  1   8.5   4.7
  8000  14.1  57.4  285   9  5   7.6   4.1 |  15.0  59.0  165   2  1   7.5   4.1
  7750  14.6  58.3  285   8  4   6.6   3.6 |  15.4  59.7  160   3  1   5.4   3.0
  7500  15.0  59.0  290   8  4   6.0   3.3 |  15.8  60.4  160   3  2   5.9   3.3
  7250  15.4  59.7  295   7  4   4.6   2.5 |  16.2  61.2  150   4  2   6.7   3.7
  7000  15.7  60.3  295   7  3   3.9   2.2 |  16.7  62.1  140   5  2   7.4   4.1
  6750  15.9  60.6  300   6  3   3.1   1.7 |  17.1  62.8  135   5  3   7.0   3.8
  6500  16.1  61.0  300   5  3   3.1   1.7 |  17.6  63.7  130   6  3   9.4   5.2
  6250  16.3  61.3  295   4  2   3.9   2.1 |  18.4  65.1  125   5  3  12.5   6.9
  6000  16.5  61.7  280   3  2   3.2   1.8 |  19.2  66.6  120   5  2  11.6   6.3
  5750  16.7  62.1  260   2  1   6.6   3.6 |  20.1  68.2  115   4  2  12.7   7.0
  5500  17.5  63.5  235   2  1  16.7   9.2 |  21.3  70.3  110   3  2  22.2  12.2

           08/23/2014 at 1500 MDT          |       08/23/2014 at 1800 MDT
                                           |
K index... +29.3  LI... -2.0               | K index... +29.5  LI... -2.6
CAPE... +227.1  CIN... -3.8                | CAPE... +407.4  CIN... -18.2
                                           |
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 -61.3 -78.3  205  31 16   0.8   0.5 | -60.8 -77.4  230  30 15   0.7   0.4
 45000 -59.2 -74.6  210  44 23   3.2   1.7 | -58.3 -72.9  235  43 22   4.0   2.2
 40000 -53.9 -65.0  240  39 20   7.0   3.9 | -52.3 -62.1  230  42 21   5.1   2.8
 38000 -49.9 -57.8  240  44 22   6.7   3.7 | -49.3 -56.7  235  48 25   5.0   2.8
 36000 -45.9 -50.6  240  48 25   6.7   3.7 | -46.3 -51.3  235  54 28   5.1   2.8
 34000 -41.3 -42.3  240  48 25   8.0   4.4 | -41.8 -43.2  240  51 26   8.4   4.6
 32000 -36.5 -33.7  245  46 23   8.0   4.4 | -36.8 -34.2  240  45 23   8.4   4.6
 30000 -31.6 -24.9  250  44 23   8.3   4.5 | -31.5 -24.7  250  42 22   7.5   4.1
 29000 -28.6 -19.5  255  44 23   8.3   4.5 | -29.3 -20.7  255  42 21   7.5   4.1
 28000 -26.1 -15.0  260  44 23   8.1   4.4 | -27.0 -16.6  260  42 22   7.6   4.2
 27000 -23.9 -11.0  255  39 20   7.3   4.0 | -24.7 -12.5  255  38 20   7.9   4.3
 26000 -21.8  -7.2  245  35 18   7.3   4.0 | -22.4  -8.3  250  35 18   8.0   4.4
 25000 -19.6  -3.3  230  32 17   7.4   4.0 | -20.0  -4.0  240  32 16   8.1   4.4
 24000 -17.6   0.3  230  32 16   6.8   3.7 | -18.0  -0.4  240  31 16   6.5   3.6
 23000 -15.6   3.9  235  32 17   6.8   3.7 | -16.1   3.0  245  32 17   6.5   3.6
 22000 -13.6   7.5  240  33 17   6.9   3.8 | -14.2   6.4  250  33 17   6.5   3.6
 21000 -11.8  10.8  245  33 17   6.2   3.4 | -12.3   9.9  250  31 16   6.3   3.5
 20000 -10.0  14.0  245  31 16   6.2   3.4 | -10.5  13.1  245  27 14   6.4   3.5
 19500  -9.1  15.6  245  30 16   6.2   3.4 |  -9.6  14.7  245  25 13   6.4   3.5
 19000  -8.2  17.2  250  30 15   6.2   3.4 |  -8.7  16.3  240  23 12   6.5   3.6
 18500  -7.3  18.9  250  28 14   6.1   3.3 |  -7.7  18.1  240  22 11   6.6   3.6
 18000  -6.4  20.5  250  26 14   6.1   3.3 |  -6.7  19.9  240  22 11   6.6   3.6
 17500  -5.5  22.1  250  25 13   6.4   3.5 |  -5.8  21.6  240  21 11   6.9   3.8
 17000  -4.6  23.7  245  24 12   6.4   3.5 |  -4.8  23.4  235  20 10   6.9   3.8
 16500  -3.6  25.5  245  22 12   6.5   3.5 |  -3.8  25.2  230  19 10   6.8   3.8
 16000  -2.7  27.1  240  22 11   6.5   3.6 |  -2.8  27.0  230  19 10   6.8   3.7
 15500  -1.7  28.9  240  22 11   6.5   3.6 |  -1.8  28.8  225  19 10   6.8   3.7
 15000  -0.8  30.6  235  23 12   6.5   3.6 |  -0.3  31.5  220  17  9   7.1   3.9
 14500   0.6  33.1  230  23 12   6.6   3.6 |   0.8  33.4  220  16  8   7.3   4.0
 14000   1.6  34.9  225  22 11   7.0   3.9 |   1.9  35.4  220  14  7   7.7   4.2
 13500   2.6  36.7  220  20 10   7.0   3.9 |   3.0  37.4  220  13  7   7.7   4.2
 13000   3.6  38.5  210  17  9   7.4   4.1 |   4.1  39.4  220  11  6   7.7   4.2
 12500   4.7  40.5  200  13  7   7.2   4.0 |   5.2  41.4  225   9  5   7.6   4.2
 12000   5.9  42.6  195  11  6   9.4   5.2 |   6.4  43.5  230   8  4   8.6   4.7
 11500   7.2  45.0  190  11  6   9.4   5.1 |   7.6  45.7  240   7  3   8.5   4.7
 11000   8.5  47.3  190  10  5   8.7   4.8 |   8.9  48.0  250   6  3   9.2   5.0
 10500   9.8  49.6  185   9  5   9.7   5.3 |  10.3  50.5  260   6  3  10.8   5.9
 10250  10.6  51.1  185   9  5  11.5   6.3 |  11.1  52.0  270   6  3  11.4   6.2
 10000  11.4  52.5  180   9  4  10.3   5.6 |  11.8  53.2  285   6  3   8.5   4.7
  9750  12.1  53.8  180   8  4   9.4   5.2 |  12.4  54.3  295   6  3   8.1   4.4
  9500  12.8  55.0  180   8  4   9.6   5.3 |  13.0  55.4  305   7  4   8.2   4.5
  9250  13.5  56.3  180   8  4   9.6   5.3 |  13.6  56.5  315   8  4   8.1   4.4
  9000  14.3  57.7  180   7  4   9.9   5.4 |  14.2  57.6  320   9  5   8.0   4.4
  8750  15.0  59.0  175   7  4  10.1   5.6 |  14.8  58.6  325  10  5   8.2   4.5
  8500  15.7  60.3  175   7  4   9.8   5.4 |  15.4  59.7  325  11  6   7.9   4.3
  8250  16.5  61.7  175   7  3  10.9   6.0 |  16.0  60.8  330  12  6  10.0   5.5
  8000  17.3  63.1  175   6  3  10.5   5.8 |  16.8  62.2  330  13  7  10.5   5.7
  7750  18.0  64.4  175   6  3   9.1   5.0 |  17.4  63.3  335  13  7   8.8   4.8
  7500  18.7  65.7  175   6  3   9.5   5.2 |  18.1  64.6  335  14  7   9.4   5.1
  7250  19.4  66.9  170   6  3  10.9   6.0 |  18.8  65.8  335  14  7  10.1   5.5
  7000  20.3  68.5  170   6  3  11.3   6.2 |  19.6  67.3  335  14  7  10.2   5.6
  6750  21.1  70.0  170   5  3   9.6   5.3 |  20.3  68.5  335  15  7   9.1   5.0
  6500  21.8  71.2  170   5  3   9.8   5.4 |  21.0  69.8  335  15  8   9.4   5.2
  6250  22.5  72.5  170   5  3  10.8   5.9 |  21.7  71.1  335  14  7  10.4   5.7
  6000  23.4  74.1  170   5  2  11.4   6.2 |  22.5  72.5  330  14  7  10.4   5.7
  5750  24.2  75.6  165   4  2   9.5   5.2 |  23.2  73.8  330  14  7  10.6   5.8
  5500  24.9  76.8  165   4  2  13.8   7.6 |  24.1  75.4  330  14  7  12.5   6.8
________________________________________________________________________________

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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