Soaring Guidance
Issued by NWS Denver/Boulder, CO

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000
UXUS97 KBOU 191244
SRGBOU

Soaring Forecast
National Weather Service Denver/Boulder, Colorado
0541 MST Wednesday, November 19, 2014

This forecast is for Wednesday, November 19, 2014:

If the trigger temperature of 51.1 F/10.6 C is reached...then
   Thermal Soaring Index....................... Poor
   Maximum rate of lift........................ 0 ft/min (0.0 m/s)
   Maximum height of thermals.................. 6749 ft MSL (1464 ft AGL)

Forecast maximum temperature................... 48.0 F/9.3 C
Time of trigger temperature.................... None
Time of overdevelopment........................ None
Middle/high clouds during soaring window....... Overcast opaque high
Surface winds during soaring window............ 20 mph or less
Height of the -3 thermal index................. None
Thermal soaring outlook for Thursday 11/20..... Good

Wave Soaring Index............................. Good
Wave Soaring Index trend (to 1700 MST)......... No change
Height of stable layer (12-18K ft MSL)......... None
Weak PVA/NVA (through 1700 MST)................ Weak NVA
Potential height of wave....................... 14655 ft MSL (9370 ft AGL)
Wave soaring outlook for Thursday 11/20........ Fair

Remarks...

Sunrise/Sunset.................... 06:48:45 / 16:40:58 MST
Total possible sunshine........... 9 hr 52 min 13 sec (592 min 13 sec)
Altitude of sun at 11:45:02 MST... 30.71 degrees

Upper air data from rawinsonde observation taken on 11/19/2014 at 0500 MST

Freezing level.................. 8768 ft MSL (3483 ft AGL)
Convective condensation level... 21207 ft MSL (15922 ft AGL)
Lifted condensation level....... 16072 ft MSL (10787 ft AGL)
Lifted index.................... +13.3
K index......................... -6.3

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  -66.6 -87.9   305   72   37   0.2   0.1   91.2 196.2    46.7      M    M
 45000  -63.7 -82.7   300   69   36   4.3   2.3   71.2 160.2    37.9      M    M
 40000  -65.7 -86.3   305  107   55  -1.9  -1.0   44.8 112.7    23.5      M    M
 38000  -63.8 -82.8   310  102   53   6.8   3.7   38.7 101.6    20.0      M    M
 36000  -59.5 -75.1   310   98   50   7.9   4.4   36.5  97.6    19.0      M    M
 34000  -54.3 -65.7   310   93   48   7.4   4.1   34.5  94.2    18.2      M    M
 32000  -49.8 -57.6   315   91   47   8.1   4.5   32.5  90.5    17.3      M    M
 30000  -44.9 -48.8   315   89   46   8.7   4.8   31.4  88.5    16.8      M    M
 29000  -42.3 -44.1   315   89   46   9.2   5.0   31.0  87.7    16.7      M    M
 28000  -39.5 -39.1   315   88   45   9.3   5.1   30.7  87.3    16.8      M    M
 27000  -36.8 -34.2   315   88   45   8.6   4.7   30.4  86.6    16.7      M    M
 26000  -34.3 -29.7   315   87   45   8.6   4.7   29.9  85.8    16.5      M    M
 25000  -31.9 -25.4   315   87   45   6.1   3.4   29.2  84.6    16.2      M    M
 24000  -29.8 -21.6   315   84   43   8.1   4.5   28.2  82.8    15.5      M    M
 23000  -27.8 -18.0   315   81   42   5.1   2.8   27.1  80.7    14.8      M    M
 22000  -26.2 -15.2   315   77   40   5.1   2.8   25.4  77.8    13.6      M    M
 21000  -24.9 -12.8   315   73   38  12.6   6.9   23.6  74.5    12.2      M    M
 20000  -22.7  -8.9   315   69   36   6.4   3.5   22.8  73.0    11.6      M    M
 19500  -22.1  -7.8   315   65   34   2.9   1.6   21.7  71.1    10.8      M    M
 19000  -21.7  -7.1   315   61   31   3.1   1.7   20.6  69.0     9.8      M    M
 18500  -21.2  -6.2   315   56   29   3.2   1.8   19.4  67.0     8.9      M    M
 18000  -20.7  -5.3   320   47   24   4.0   2.2   18.4  65.1     8.0      M    M
 17500  -20.1  -4.2   320   44   23   6.1   3.3   17.4  63.3     7.2      M    M
 17000  -18.8  -1.8   325   44   22   8.1   4.4   17.1  62.7     7.0      M    M
 16500  -17.0   1.4   330   42   22   8.3   4.5   16.7  62.1     6.7      M    M
 16000  -15.7   3.7   330   42   22   8.6   4.7   16.5  61.6     6.6      M    M
 15500  -14.4   6.1   330   43   22   9.0   4.9   16.3  61.3     6.5      M    M
 15000  -13.0   8.6   325   43   22   9.0   4.9   16.2  61.1     6.4      M    M
 14500  -11.6  11.1   325   44   22   9.2   5.1   16.1  60.9     6.3      M    M
 14000  -10.5  13.1   325   44   23   5.6   3.1   15.8  60.4     6.1      M    M
 13500   -9.7  14.5   320   43   22   5.2   2.9   15.0  58.9     5.4      M    M
 13000   -8.9  16.0   315   43   22   5.2   2.8   14.2  57.6     4.8      M    M
 12500   -8.1  17.4   315   42   22   4.8   2.6   13.5  56.3     4.1      M    M
 12000   -7.1  19.2   310   42   21   8.3   4.6   13.0  55.4     3.7      M    M
 11500   -5.9  21.4   310   39   20   8.0   4.4   12.7  54.8     3.4      M    M
 11000   -4.7  23.5   310   36   19   8.0   4.4   12.4  54.3     3.2      M    M
 10500   -3.5  25.7   310   33   17   7.8   4.3   12.1  53.8     2.9      M    M
 10250   -2.9  26.8   310   32   16   8.7   4.8   12.0  53.6     2.8      M    M
 10000   -2.3  27.9   310   32   16   6.2   3.4   11.9  53.4     2.7      M    M
  9750   -2.0  28.4   305   32   16   2.6   1.4   11.4  52.5     2.2      M    M
  9500   -1.8  28.8   305   32   16   5.6   3.1   10.9  51.7     1.8      M    M
  9250   -1.2  29.8   300   32   16   8.5   4.7   10.7  51.3     1.6      M    M
  9000   -0.6  30.9   300   32   16   8.6   4.7   10.7  51.2     1.5      M    M
  8750    0.1  32.2   295   32   16   8.6   4.7   10.6  51.0     1.5      M    M
  8500    0.7  33.3   295   31   16   8.6   4.7   10.5  50.9     1.4      M    M
  8250    1.4  34.5   290   31   16   8.6   4.7   10.4  50.7     1.3      M    M
  8000    2.0  35.6   290   31   16   8.7   4.7   10.3  50.6     1.2      M    M
  7750    2.7  36.9   295   29   15   8.5   4.6   10.2  50.4     1.1      M    M
  7500    3.3  37.9   295   27   14   9.2   5.0   10.1  50.2     1.0      M    M
  7250    3.9  39.0   300   26   13   6.4   3.5   10.0  50.1     0.9      M    M
  7000    4.2  39.6   305   24   12   3.3   1.8    9.6  49.3     0.5      M    M
  6750    4.5  40.1   305   20   11   3.9   2.1    9.1  48.4     0.0      M    M
  6500    4.8  40.6   300   17    9   3.5   1.9    8.7  47.6    -0.4     12  0.1
  6250    5.0  41.0   300   13    7   4.5   2.5    8.2  46.8    -0.9      M    M
  6000    5.5  41.9   295    9    5   7.6   4.2    7.9  46.3    -1.2      M    M
  5750    6.2  43.2   290    7    4   9.8   5.4    7.9  46.2    -1.3      M    M
  5500    6.8  44.2   280    5    2   5.6   3.0    7.8  46.0    -1.4      M    M

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

           11/19/2014 at 0800 MST          |       11/19/2014 at 1100 MST
                                           |
K index... +5.3  LI... +6.2                | K index... +3.2  LI... +7.3
CAPE... 0.0  CIN... M                      | CAPE... 0.0  CIN... M
                                           |
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 -62.9 -81.2  305  52 27  -1.0  -0.5 | -63.2 -81.8  305  62 32  -2.6  -1.4
 45000 -64.5 -84.1  305  73 38  -1.1  -0.6 | -67.3 -89.1  300  77 39  -3.2  -1.8
 40000 -64.1 -83.4  305  88 45   0.3   0.2 | -64.5 -84.1  305  82 42   2.2   1.2
 38000 -62.2 -80.0  305  90 46   6.8   3.7 | -61.9 -79.4  305  82 42   6.9   3.8
 36000 -58.1 -72.6  310  87 45   6.8   3.7 | -57.7 -71.9  305  79 41   6.9   3.8
 34000 -54.0 -65.2  310  85 44   7.8   4.3 | -53.6 -64.5  310  76 39   7.8   4.3
 32000 -49.4 -56.9  310  83 43   7.7   4.2 | -48.9 -56.0  310  75 39   7.7   4.2
 30000 -44.2 -47.6  310  81 42   8.1   4.4 | -43.7 -46.7  305  74 38   7.7   4.2
 29000 -41.7 -43.1  310  80 41   8.1   4.4 | -41.4 -42.5  305  72 37   7.7   4.2
 28000 -39.3 -38.7  310  79 41   8.1   4.4 | -39.1 -38.4  305  71 37   7.7   4.2
 27000 -36.9 -34.4  310  78 40   8.2   4.5 | -36.8 -34.2  305  70 36   8.3   4.6
 26000 -34.4 -29.9  310  76 39   8.3   4.5 | -34.2 -29.6  305  68 35   8.7   4.8
 25000 -32.0 -25.6  315  73 38   8.3   4.5 | -31.6 -24.9  305  67 34   8.7   4.8
 24000 -29.5 -21.1  315  71 37   8.1   4.4 | -29.0 -20.2  305  65 33   8.3   4.6
 23000 -27.3 -17.1  315  69 35   7.5   4.1 | -26.7 -16.1  310  63 32   7.6   4.1
 22000 -25.0 -13.0  315  66 34   7.5   4.1 | -24.4 -11.9  310  60 31   7.6   4.2
 21000 -22.8  -9.0  315  63 33   6.4   3.5 | -22.2  -8.0  310  58 30   6.6   3.6
 20000 -21.2  -6.2  315  59 30   5.7   3.1 | -20.4  -4.7  315  54 28   6.2   3.4
 19500 -20.3  -4.5  315  56 29   5.7   3.1 | -19.5  -3.1  315  52 27   6.2   3.4
 19000 -19.5  -3.1  315  54 28   5.7   3.1 | -18.6  -1.5  315  50 26   6.2   3.4
 18500 -18.7  -1.7  315  52 27   5.4   2.9 | -17.6   0.3  315  48 25   5.7   3.1
 18000 -18.0  -0.4  315  49 25   4.8   2.6 | -16.9   1.6  315  46 24   5.2   2.9
 17500 -17.2   1.0  315  47 24   4.8   2.6 | -16.1   3.0  315  44 23   5.2   2.8
 17000 -16.5   2.3  315  44 23   4.8   2.6 | -15.4   4.3  315  42 22   5.3   2.9
 16500 -15.8   3.6  315  41 21   4.8   2.6 | -14.6   5.7  315  39 20   5.3   2.9
 16000 -15.1   4.8  315  38 19   5.3   2.9 | -13.8   7.2  315  37 19   5.5   3.0
 15500 -14.2   6.4  315  35 18   5.6   3.1 | -13.0   8.6  315  35 18   5.5   3.0
 15000 -13.0   8.6  315  31 16   5.9   3.3 | -11.7  10.9  315  31 16   5.4   3.0
 14500 -12.1  10.2  315  29 15   5.9   3.2 | -10.9  12.4  315  29 15   5.4   3.0
 14000 -11.1  12.0  320  27 14   7.2   3.9 | -10.1  13.8  315  27 14   5.8   3.2
 13500 -10.0  14.0  320  26 13   7.5   4.1 |  -9.2  15.4  320  25 13   5.9   3.2
 13000  -8.9  16.0  325  25 13   8.0   4.4 |  -8.3  17.1  320  23 12   6.0   3.3
 12500  -7.6  18.3  325  25 13   8.3   4.6 |  -7.3  18.9  320  21 11   6.1   3.3
 12000  -6.4  20.5  325  26 13   7.9   4.3 |  -6.4  20.5  320  20 10   7.1   3.9
 11500  -5.2  22.6  325  26 14   7.6   4.2 |  -5.2  22.6  325  21 11   7.7   4.2
 11000  -4.1  24.6  320  27 14   7.2   4.0 |  -4.1  24.6  325  21 11   7.4   4.1
 10500  -3.1  26.4  320  28 14   7.5   4.1 |  -3.0  26.6  320  23 12   7.6   4.2
 10250  -2.6  27.3  320  28 15   5.0   2.7 |  -2.5  27.5  315  23 12   5.6   3.1
 10000  -2.3  27.9  320  28 15   3.4   1.9 |  -2.1  28.2  315  24 12   4.1   2.2
  9750  -2.0  28.4  315  28 15   5.6   3.1 |  -1.8  28.8  310  24 13   5.3   2.9
  9500  -1.5  29.3  315  28 15   6.2   3.4 |  -1.4  29.5  310  25 13   5.7   3.1
  9250  -1.1  30.0  310  29 15   5.1   2.8 |  -1.0  30.2  305  26 13   4.5   2.4
  9000  -0.8  30.6  310  28 15   3.6   2.0 |  -0.7  30.7  305  25 13   2.4   1.3
  8750  -0.5  31.1  305  28 14   3.3   1.8 |  -0.6  30.9  300  23 12   2.1   1.2
  8500  -0.3  31.5  305  27 14   3.7   2.0 |  -0.4  31.3  295  21 11   2.1   1.2
  8250  -0.0  32.0  305  26 13   2.6   1.4 |  -0.3  31.5  290  18  9   2.7   1.5
  8000   0.1  32.2  300  24 12   1.6   0.9 |  -0.1  31.8  280  15  7   3.3   1.8
  7750   0.3  32.5  300  21 11   2.1   1.1 |   0.2  32.4  270  11  6   4.0   2.2
  7500   0.4  32.7  295  19 10   2.4   1.3 |   0.6  33.1  255   9  5   5.7   3.1
  7250   0.6  33.1  295  16  8   2.9   1.6 |   1.0  33.8  240   8  4   7.5   4.1
  7000   0.8  33.4  295  12  6   2.9   1.6 |   1.6  34.9  225   7  4   8.0   4.4
  6750   1.0  33.8  290   8  4   3.5   1.9 |   2.2  36.0  210   7  3   8.6   4.7
  6500   1.3  34.3  285   5  3   2.9   1.6 |   2.8  37.0  195   6  3   5.2   2.8
  6250   1.4  34.5  265   4  2   0.4   0.2 |   3.0  37.4  185   6  3   1.0   0.6
  6000   1.5  34.7  230   3  2   5.3   2.9 |   3.1  37.6  175   5  3   4.7   2.6
  5750   1.9  35.4  200   4  2  -2.6  -1.4 |   3.4  38.1  165   5  3  -0.6  -0.3
  5500   0.4  32.7  190   4  2 -35.2 -19.3 |   2.6  36.7  155   4  2 -18.9 -10.4

           11/19/2014 at 1400 MST          |       11/19/2014 at 1700 MST
                                           |
K index... +1.9  LI... +7.4                | K index... +1.0  LI... +8.2
CAPE... 0.0  CIN... -0.2                   | CAPE... 0.0  CIN... -0.1
                                           |
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 -63.3 -81.9  305  62 32  -1.5  -0.8 | -64.4 -83.9  305  49 25  -1.2  -0.7
 45000 -65.8 -86.4  300  73 38  -1.9  -1.0 | -66.3 -87.3  300  71 37  -1.5  -0.8
 40000 -64.2 -83.6  300  76 39   1.2   0.7 | -64.7 -84.5  300  68 35   1.2   0.6
 38000 -61.8 -79.2  300  74 38   7.1   3.9 | -62.2 -80.0  300  66 34   7.5   4.1
 36000 -57.6 -71.7  305  70 36   7.1   3.9 | -57.7 -71.9  300  64 33   7.5   4.1
 34000 -53.3 -63.9  305  66 34   7.9   4.4 | -53.2 -63.8  300  63 32   8.0   4.4
 32000 -48.0 -54.4  305  65 34   7.8   4.3 | -47.9 -54.2  300  61 31   7.9   4.3
 30000 -43.3 -45.9  305  65 33   7.8   4.3 | -43.1 -45.6  300  60 31   8.1   4.4
 29000 -40.9 -41.6  305  65 33   7.8   4.3 | -40.7 -41.3  300  60 31   8.1   4.4
 28000 -38.6 -37.5  305  65 33   7.8   4.3 | -38.2 -36.8  305  59 31   8.1   4.4
 27000 -36.2 -33.2  305  65 33   8.0   4.4 | -35.8 -32.4  305  59 30   7.8   4.3
 26000 -33.8 -28.8  305  63 33   8.1   4.5 | -33.6 -28.5  305  57 29   7.6   4.2
 25000 -31.4 -24.5  305  62 32   8.2   4.5 | -31.3 -24.3  305  55 28   7.7   4.2
 24000 -29.0 -20.2  305  61 31   8.2   4.5 | -29.0 -20.2  305  53 27   7.8   4.3
 23000 -26.5 -15.7  305  59 30   8.1   4.5 | -26.6 -15.9  305  51 26   8.0   4.4
 22000 -24.1 -11.4  305  57 29   8.2   4.5 | -24.3 -11.7  310  49 25   8.0   4.4
 21000 -21.7  -7.1  310  55 28   7.1   3.9 | -21.9  -7.4  310  47 24   7.5   4.1
 20000 -19.8  -3.6  310  51 26   6.5   3.6 | -19.7  -3.5  310  45 23   7.3   4.0
 19500 -18.8  -1.8  310  49 25   6.5   3.6 | -18.7  -1.7  310  43 22   7.3   4.0
 19000 -17.8  -0.0  310  46 24   6.5   3.6 | -17.6   0.3  310  42 22   7.3   4.0
 18500 -16.9   1.6  310  44 23   6.2   3.4 | -16.5   2.3  310  41 21   7.1   3.9
 18000 -16.0   3.2  310  42 22   5.8   3.2 | -15.5   4.1  310  40 21   6.7   3.7
 17500 -15.1   4.8  310  39 20   6.0   3.3 | -14.5   5.9  310  40 21   6.8   3.7
 17000 -14.4   6.1  310  37 19   4.4   2.4 | -13.6   7.5  310  39 20   5.6   3.1
 16500 -13.7   7.3  310  35 18   4.5   2.5 | -12.8   9.0  310  39 20   5.7   3.1
 16000 -13.0   8.6  310  33 17   5.3   2.9 | -11.5  11.3  315  38 19   5.3   2.9
 15500 -11.7  10.9  310  32 16   5.8   3.2 | -10.7  12.7  315  36 19   5.3   2.9
 15000 -10.9  12.4  315  31 16   5.6   3.0 |  -9.9  14.2  315  35 18   5.7   3.1
 14500 -10.0  14.0  315  30 15   5.5   3.0 |  -9.0  15.8  315  34 18   5.7   3.1
 14000  -9.2  15.4  315  29 15   6.4   3.5 |  -8.1  17.4  315  33 17   5.7   3.1
 13500  -8.1  17.4  315  27 14   6.7   3.7 |  -7.3  18.9  315  32 16   5.6   3.1
 13000  -7.1  19.2  315  26 13   6.1   3.4 |  -6.4  20.5  315  30 16   5.5   3.0
 12500  -6.3  20.7  315  25 13   5.8   3.2 |  -5.6  21.9  315  29 15   5.5   3.0
 12000  -5.4  22.3  315  24 12   7.0   3.8 |  -4.7  23.5  310  28 14   5.7   3.1
 11500  -4.2  24.4  315  25 13   8.1   4.5 |  -3.8  25.2  310  27 14   5.9   3.2
 11000  -2.9  26.8  315  25 13   6.7   3.7 |  -2.9  26.8  305  27 14   5.4   3.0
 10500  -2.1  28.2  310  26 13   6.4   3.3 |  -2.2  28.0  300  27 14   5.4   3.0
 10250  -1.7  28.9  305  26 13   2.9   1.6 |  -1.8  28.8  300  26 14   3.0   1.6
 10000  -1.6  29.1  305  26 13   2.3   1.3 |  -1.7  28.9  300  26 14   3.6   2.0
  9750  -1.3  29.7  300  25 13   5.0   2.7 |  -1.3  29.7  295  25 13   6.4   3.5
  9500  -1.0  30.2  300  24 12   4.8   2.6 |  -0.8  30.6  295  24 12   5.8   3.2
  9250  -0.7  30.7  295  23 12   4.4   2.4 |  -0.4  31.3  290  22 11   5.9   3.2
  9000  -0.4  31.3  295  22 11   3.8   2.1 |  -0.0  32.0  290  21 11   5.3   2.9
  8750  -0.1  31.8  290  20 10   4.6   2.5 |   0.3  32.5  285  19 10   5.4   2.9
  8500   0.3  32.5  290  17  9   5.4   2.9 |   0.7  33.3  285  17  9   5.7   3.1
  8250   0.6  33.1  285  15  8   4.4   2.4 |   1.1  34.0  285  15  8   5.3   2.9
  8000   0.9  33.6  280  13  6   3.5   1.9 |   1.5  34.7  285  13  6   5.0   2.7
  7750   1.2  34.2  275  10  5   4.4   2.4 |   1.9  35.4  280  11  5   5.2   2.8
  7500   1.6  34.9  265   9  4   5.3   2.9 |   2.3  36.1  280   9  5   5.2   2.9
  7250   2.0  35.6  255   7  4   6.5   3.6 |   2.6  36.7  275   8  4   4.7   2.6
  7000   2.5  36.5  250   6  3   7.0   3.8 |   3.0  37.4  275   6  3   4.2   2.3
  6750   3.1  37.6  240   5  3   8.0   4.4 |   3.3  37.9  275   5  2   4.6   2.5
  6500   3.6  38.5  235   4  2   4.3   2.4 |   3.6  38.5  280   3  2   1.2   0.7
  6250   3.7  38.7  225   3  1  -0.1  -0.1 |   3.5  38.3  285   2  1  -2.5  -1.4
  6000   3.7  38.7  185   2  1   1.7   0.9 |   3.3  37.9  305   1  1  -1.3  -0.7
  5750   3.7  38.7  130   2  1  -1.4  -0.8 |   3.1  37.6  005   1  0  -4.0  -2.2
  5500   3.1  37.6  115   3  1 -10.0  -5.5 |   2.3  36.1  070   1  0 -13.7  -7.5
________________________________________________________________________________

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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