Soaring Guidance
Issued by NWS Denver/Boulder, CO

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000
UXUS97 KBOU 260142
SRGBOU

Soaring Forecast
National Weather Service Denver/Boulder, Colorado
1842 MST Sunday, January 25, 2015

This forecast is for Monday, January 26, 2015:

If the trigger temperature of 63.5 F/17.5 C is reached...then
   Thermal Soaring Index....................... Good
   Maximum rate of lift........................ 474 ft/min (2.4 m/s)
   Maximum height of thermals.................. 11793 ft MSL (6506 ft AGL)

Forecast maximum temperature................... 70.0 F/21.6 C
Time of trigger temperature.................... 1100 MST
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................. 9932 ft MSL (4645 ft AGL)
Thermal soaring outlook for Tuesday 01/27...... Excellent

Wave Soaring Index............................. Poor
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....................... 14650 ft MSL (9363 ft AGL)
Wave soaring outlook for Tuesday 01/27......... Poor

Remarks... None

Sunrise/Sunset.................... 07:12:27 / 17:10:37 MST
Total possible sunshine........... 9 hr 58 min 10 sec (598 min 10 sec)
Altitude of sun at 12:11:55 MST... 31.64 degrees

Upper air data from numerical model forecast valid on 01/26/2015 at 0500 MST

Freezing level.................. 5305 ft MSL (18 ft AGL)
Additional freezing level....... 12732 ft MSL (7445 ft AGL)
Convective condensation level... 20025 ft MSL (14738 ft AGL)
Lifted condensation level....... 16767 ft MSL (11480 ft AGL)
Lifted index.................... +4.9
K index......................... +2.7

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  -62.8 -81.0   320   37   19   2.3   1.3      M     M       M      M    M
 45000  -59.9 -75.8   340   48   25  -1.9  -1.1      M     M       M      M    M
 40000  -63.0 -81.4   335   37   19  -2.3  -1.2      M     M       M      M    M
 38000  -59.8 -75.6   330   36   18   7.1   3.9      M     M       M      M    M
 36000  -55.5 -67.9   325   37   19   7.1   3.9      M     M       M      M    M
 34000  -50.8 -59.4   320   37   19   8.6   4.7      M     M       M      M    M
 32000  -45.0 -49.0   320   36   18   8.6   4.7      M     M       M      M    M
 30000  -39.9 -39.8   320   36   19   8.6   4.7   35.3  95.6    10.7      M    M
 29000  -37.3 -35.1   320   37   19   8.6   4.7   34.9  94.8    10.5      M    M
 28000  -34.7 -30.5   320   38   19   8.6   4.7   34.5  94.2    10.4      M    M
 27000  -32.2 -26.0   320   39   20   8.4   4.6   34.0  93.2    10.1      M    M
 26000  -29.7 -21.5   325   40   20   8.4   4.6   33.4  92.2     9.8      M    M
 25000  -27.2 -17.0   325   41   21   8.4   4.6   33.0  91.4     9.5      M    M
 24000  -24.7 -12.5   325   41   21   8.2   4.5   32.4  90.4     9.2      M    M
 23000  -22.3  -8.1   325   40   21   8.2   4.5   31.8  89.2     8.7      M    M
 22000  -19.8  -3.6   330   39   20   8.2   4.5   31.3  88.3     8.4      M    M
 21000  -17.3   0.9   330   38   19   8.7   4.8   30.8  87.5     8.1      M    M
 20000  -14.7   5.5   325   35   18   8.7   4.8   30.4  86.8     7.8      M    M
 19500  -13.4   7.9   325   34   17   8.7   4.7   30.3  86.5     7.7      M    M
 19000  -12.1  10.2   325   32   17   8.0   4.4   30.1  86.3     7.7      M    M
 18500  -11.0  12.2   325   31   16   6.9   3.8   29.7  85.4     7.3      M    M
 18000  -10.0  14.0   320   29   15   7.0   3.8   29.2  84.5     6.9      M    M
 17500   -9.0  15.8   320   28   14   6.2   3.4   28.6  83.5     6.4      M    M
 17000   -8.1  17.4   325   27   14   6.2   3.4   28.0  82.4     5.9      M    M
 16500   -7.2  19.0   330   27   14   6.2   3.4   27.4  81.4     5.4      M    M
 16000   -5.8  21.6   330   26   13   6.1   3.3   26.5  79.7     4.6      M    M
 15500   -4.9  23.2   335   25   13   6.6   3.6   25.9  78.7     4.1      M    M
 15000   -3.9  25.0   340   26   13   6.7   3.7   25.4  77.7     3.6      M    M
 14500   -2.9  26.8   340   27   14   6.3   3.4   24.9  76.8     3.2      M    M
 14000   -2.1  28.2   345   27   14   5.8   3.2   24.2  75.6     2.6      M    M
 13500   -1.2  29.8   350   27   14   5.8   3.2   23.6  74.5     2.0      M    M
 13000   -0.3  31.5   350   27   14   6.0   3.3   23.0  73.3     1.4      M    M
 12500    0.5  32.9   355   28   14   5.9   3.2   22.4  72.2     0.8      M    M
 12000    1.4  34.5   355   28   14   5.5   3.0   21.7  71.0     0.2      M    M
 11500    2.2  36.0   355   27   14   5.4   3.0   21.0  69.8    -0.5    446  2.3
 11000    2.9  37.2   355   27   14   4.7   2.6   20.2  68.4    -1.2    410  2.1
 10500    3.6  38.5   355   26   13   4.1   2.2   19.5  67.0    -2.0    374  1.9
 10250    3.8  38.8   355   25   13   2.4   1.3   18.9  66.1    -2.5    360  1.8
 10000    4.1  39.4   355   25   13   5.6   3.1   18.4  65.2    -3.0    345  1.8
  9750    4.6  40.3   350   24   12   8.6   4.7   18.3  64.9    -3.1    321  1.6
  9500    5.2  41.4   350   22   12   7.3   4.0   18.1  64.6    -3.3    296  1.5
  9250    5.7  42.3   350   22   11   6.0   3.3   17.9  64.2    -3.5    273  1.4
  9000    6.2  43.2   350   22   11   7.3   4.0   17.6  63.7    -3.8    252  1.3
  8750    6.9  44.4   350   22   11  10.1   5.5   17.5  63.6    -3.9    224  1.1
  8500    7.6  45.7   350   22   11   8.4   4.6   17.5  63.6    -3.9    195  1.0
  8250    8.1  46.6   350   20   10   6.6   3.6   17.3  63.2    -4.1    172  0.9
  8000    8.6  47.5   350   19   10   7.0   3.9   17.1  62.8    -4.3    149  0.8
  7750    9.1  48.4   345   17    9   6.8   3.7   16.9  62.4    -4.6    126  0.6
  7500    9.6  49.3   340   15    8   6.5   3.6   16.7  62.0    -4.8    104  0.5
  7250   10.1  50.2   330   13    7   6.2   3.4   16.4  61.5    -5.1     83  0.4
  7000   10.6  51.1   315   11    6   6.5   3.6   16.1  61.0    -5.4     61  0.3
  6750   11.1  52.0   300   10    5   6.4   3.5   15.9  60.6    -5.6     39  0.2
  6500   11.4  52.5   295   11    5   3.3   1.8   15.5  60.0    -6.0     20  0.1
  6250   11.8  53.2   290   11    6  10.5   5.8   15.2  59.3    -6.4      2  0.0
  6000   12.2  54.0   290   12    6 -16.5  -9.1   14.8  58.6    -6.8      M    M
  5750    8.9  48.0   275   12    6 -60.8 -33.3   10.8  51.4   -10.8     75  0.4
  5500    4.3  39.7   255    8    4 -52.9 -29.0    5.5  41.9   -16.1    206  1.0

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

           01/26/2015 at 0800 MST          |       01/26/2015 at 1100 MST
                                           |
K index... +3.1  LI... +7.0                | K index... +1.3  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 -64.8 -84.6  330  44 23   3.0   1.7 | -65.6 -86.1  325  42 22   4.5   2.5
 45000 -60.7 -77.3  340  43 22  -0.4  -0.2 | -59.8 -75.6  325  34 18  -1.9  -1.0
 40000 -61.5 -78.7  315  30 16  -0.7  -0.4 | -62.9 -81.2  285  33 17  -3.1  -1.7
 38000 -58.7 -73.7  315  31 16   6.0   3.3 | -59.3 -74.7  290  34 17   7.2   3.9
 36000 -55.1 -67.2  315  33 17   6.0   3.3 | -55.0 -67.0  300  35 18   7.2   3.9
 34000 -50.2 -58.4  320  34 17   8.4   4.6 | -50.4 -58.7  305  34 17   8.3   4.5
 32000 -45.2 -49.4  330  34 18   8.4   4.6 | -45.4 -49.7  315  32 16   8.3   4.5
 30000 -40.0 -40.0  335  36 18   8.7   4.8 | -40.4 -40.7  325  30 15   8.4   4.6
 29000 -37.4 -35.3  335  36 19   8.7   4.8 | -37.9 -36.2  325  29 15   8.4   4.6
 28000 -34.8 -30.6  335  37 19   8.7   4.8 | -35.4 -31.7  330  28 14   8.4   4.6
 27000 -32.2 -26.0  340  37 19   8.6   4.7 | -32.2 -26.0  335  27 14   8.7   4.8
 26000 -29.7 -21.5  340  36 18   8.6   4.7 | -29.6 -21.3  340  27 14   8.7   4.8
 25000 -27.1 -16.8  340  34 18   8.6   4.7 | -27.0 -16.6  345  26 14   8.7   4.8
 24000 -24.6 -12.3  335  33 17   8.0   4.4 | -24.4 -11.9  345  25 13   8.6   4.7
 23000 -22.2  -8.0  335  32 16   8.0   4.4 | -21.9  -7.4  340  23 12   8.6   4.7
 22000 -19.8  -3.6  330  30 16   8.0   4.4 | -19.3  -2.7  335  21 11   8.6   4.7
 21000 -17.3   0.9  330  29 15   8.8   4.8 | -16.8   1.8  330  21 11   8.4   4.6
 20000 -14.7   5.5  330  28 14   8.8   4.8 | -14.3   6.3  330  20 11   8.4   4.6
 19500 -13.4   7.9  330  27 14   8.7   4.8 | -13.0   8.6  325  20 10   8.4   4.6
 19000 -12.1  10.2  330  27 14   7.5   4.1 | -11.8  10.8  325  20 10   6.8   3.7
 18500 -11.2  11.8  330  25 13   5.8   3.2 | -10.9  12.4  335  22 11   6.0   3.3
 18000 -10.3  13.5  335  24 12   5.8   3.2 | -10.0  14.0  340  24 12   5.9   3.2
 17500  -9.5  14.9  340  23 12   5.3   2.9 |  -9.1  15.6  345  25 13   6.5   3.6
 17000  -8.7  16.3  340  23 12   5.4   2.9 |  -8.2  17.2  345  25 13   6.5   3.6
 16500  -7.5  18.5  345  22 11   5.7   3.1 |  -7.3  18.9  350  25 13   5.6   3.1
 16000  -6.7  19.9  345  19 10   5.7   3.1 |  -6.5  20.3  345  25 13   5.4   3.0
 15500  -5.8  21.6  345  17  9   6.0   3.3 |  -5.7  21.7  345  24 12   5.8   3.2
 15000  -4.9  23.2  350  17  9   6.1   3.3 |  -4.8  23.4  345  23 12   6.7   3.7
 14500  -4.0  24.8  355  18  9   6.2   3.4 |  -3.8  25.2  340  21 11   6.7   3.7
 14000  -3.1  26.4  005  22 11   6.4   3.5 |  -2.3  27.9  340  19 10   6.3   3.5
 13500  -2.1  28.2  010  26 13   6.2   3.4 |  -1.4  29.5  345  18  9   5.8   3.2
 13000  -1.2  29.8  015  28 14   6.0   3.3 |  -0.6  30.9  350  18  9   5.3   2.9
 12500  -0.4  31.3  015  30 15   6.2   3.4 |   0.1  32.2  360  18  9   5.7   3.1
 12000   0.6  33.1  015  29 15   6.8   3.7 |   1.1  34.0  005  18  9   6.5   3.6
 11500   1.6  34.9  015  28 15   6.7   3.7 |   2.0  35.6  010  18  9   6.7   3.7
 11000   2.6  36.7  015  27 14   6.1   3.3 |   3.1  37.6  015  17  9   7.0   3.8
 10500   3.5  38.3  010  26 13   5.0   2.7 |   4.1  39.4  015  17  9   5.1   2.8
 10250   3.7  38.7  010  26 13   3.0   1.6 |   4.3  39.7  015  17  9   2.9   1.6
 10000   4.1  39.4  010  25 13   7.4   4.1 |   4.7  40.5  015  17  9   6.9   3.8
  9750   4.8  40.6  005  24 12  11.0   6.1 |   5.3  41.5  015  16  8   9.3   5.1
  9500   5.6  42.1  360  23 12   8.9   4.9 |   6.0  42.8  015  15  8   7.2   4.0
  9250   6.2  43.2  360  22 11   6.8   3.7 |   6.4  43.5  015  14  7   4.9   2.7
  9000   6.7  44.1  360  22 11   8.8   4.8 |   6.8  44.2  010  13  7   7.7   4.2
  8750   7.5  45.5  355  21 11  11.8   6.5 |   7.5  45.5  005  12  6  10.4   5.7
  8500   8.3  46.9  355  21 11   9.3   5.1 |   8.3  46.9  355  11  6   9.0   4.9
  8250   8.9  48.0  355  20 10   7.1   3.9 |   8.9  48.0  355  10  5   8.1   4.5
  8000   9.5  49.1  355  19 10   7.7   4.2 |   9.5  49.1  355  10  5   8.9   4.9
  7750  10.0  50.0  350  17  9   7.3   4.0 |  10.2  50.4  355  10  5   9.3   5.1
  7500  10.6  51.1  345  15  8   6.6   3.6 |  10.9  51.6  355   9  5   8.5   4.7
  7250  11.0  51.8  340  13  7   6.4   3.5 |  11.5  52.7  350   8  4   7.7   4.2
  7000  11.5  52.7  330  11  6   6.2   3.4 |  12.1  53.8  340   7  3   9.3   5.1
  6750  12.0  53.6  315  10  5   6.3   3.5 |  12.8  55.0  340   6  3   8.1   4.5
  6500  12.4  54.3  315  10  5   4.0   2.2 |  13.2  55.8  320   6  3   3.9   2.1
  6250  12.8  55.0  310  11  6  12.2   6.7 |  13.7  56.7  300   6  3  10.2   5.6
  6000  13.2  55.8  305  12  6 -18.4 -10.1 |  14.1  57.4  285   7  4 -10.7  -5.8
  5750   9.5  49.1  290  11  6 -68.1 -37.4 |  11.6  52.9  265   7  4 -47.3 -26.0
  5500   4.4  39.9  265   7  4 -58.3 -32.0 |   7.7  45.9  240   6  3 -46.0 -25.2

           01/26/2015 at 1400 MST          |       01/26/2015 at 1700 MST
                                           |
K index... +2.4  LI... +7.1                | K index... +2.7  LI... +6.2
CAPE... 0.0  CIN... -0.9                   | CAPE... 0.0  CIN... -0.3
                                           |
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 -65.7 -86.3  325  40 21   4.4   2.4 | -65.2 -85.4  315  40 21   4.9   2.7
 45000 -59.9 -75.8  310  35 18  -1.2  -0.7 | -58.9 -74.0  305  40 21  -1.4  -0.8
 40000 -62.1 -79.8  310  35 18  -2.4  -1.3 | -61.4 -78.5  300  35 18  -2.5  -1.4
 38000 -59.0 -74.2  305  35 18   6.2   3.4 | -58.6 -73.5  305  35 18   5.8   3.2
 36000 -55.3 -67.5  300  35 18   6.2   3.4 | -55.1 -67.2  305  35 18   5.8   3.2
 34000 -50.8 -59.4  300  35 18   8.5   4.7 | -50.9 -59.6  305  35 18   8.4   4.6
 32000 -45.7 -50.3  300  33 17   8.5   4.7 | -45.8 -50.4  305  33 17   8.4   4.6
 30000 -40.7 -41.3  300  30 16   8.3   4.6 | -40.7 -41.3  300  32 16   8.6   4.7
 29000 -38.2 -36.8  300  29 15   8.3   4.6 | -38.1 -36.6  300  31 16   8.6   4.7
 28000 -35.7 -32.3  305  28 14   8.3   4.6 | -34.9 -30.8  300  30 16   8.6   4.7
 27000 -32.5 -26.5  310  26 13   9.0   5.0 | -32.2 -26.0  300  29 15   9.2   5.1
 26000 -29.8 -21.6  315  24 12   9.0   5.0 | -29.4 -20.9  300  27 14   9.2   5.1
 25000 -27.1 -16.8  325  22 12   9.1   5.0 | -26.7 -16.1  300  26 13   9.2   5.1
 24000 -24.4 -11.9  330  21 11   8.6   4.7 | -24.1 -11.4  300  23 12   8.4   4.6
 23000 -21.9  -7.4  325  19 10   8.6   4.7 | -21.6  -6.9  300  19 10   8.4   4.6
 22000 -19.3  -2.7  325  18  9   8.6   4.7 | -19.1  -2.4  300  16  8   8.4   4.6
 21000 -16.7   1.9  320  17  9   8.5   4.7 | -16.6   2.1  305  15  8   8.1   4.4
 20000 -14.2   6.4  315  18  9   8.5   4.7 | -14.2   6.4  310  16  8   8.1   4.4
 19500 -12.9   8.8  315  18  9   8.5   4.7 | -13.0   8.6  310  16  8   8.1   4.4
 19000 -11.7  10.9  310  18  9   8.1   4.5 | -11.8  10.8  315  16  8   7.2   3.9
 18500 -10.5  13.1  315  18  9   7.9   4.3 | -10.8  12.6  315  16  8   6.6   3.6
 18000  -9.3  15.3  320  18  9   7.9   4.4 |  -9.9  14.2  320  16  8   6.6   3.6
 17500  -8.4  16.9  330  18  9   4.6   2.5 |  -8.9  16.0  325  15  8   5.9   3.2
 17000  -7.7  18.1  340  19 10   4.8   2.6 |  -8.1  17.4  335  14  7   5.9   3.3
 16500  -7.0  19.4  345  20 10   6.3   3.5 |  -7.2  19.0  340  14  7   6.2   3.4
 16000  -6.0  21.2  350  20 10   6.8   3.7 |  -6.3  20.7  350  13  7   6.4   3.5
 15500  -5.0  23.0  355  21 11   6.6   3.6 |  -5.4  22.3  355  13  7   6.7   3.7
 15000  -4.1  24.6  360  20 10   6.1   3.3 |  -4.3  24.3  360  12  6   7.5   4.1
 14500  -3.2  26.2  360  19 10   6.1   3.3 |  -3.2  26.2  005  11  5   7.5   4.1
 14000  -1.9  28.6  355  16  8   5.7   3.1 |  -1.5  29.3  010   9  5   7.7   4.2
 13500  -1.1  30.0  350  14  7   6.2   3.4 |  -0.4  31.3  010   9  4   7.5   4.1
 13000  -0.1  31.8  345  13  7   6.8   3.8 |   0.7  33.3  015   7  4   7.1   3.9
 12500   0.9  33.6  335  13  7   6.8   3.7 |   1.8  35.2  025   6  3   7.1   3.9
 12000   1.9  35.4  330  12  6   6.6   3.6 |   2.8  37.0  015   4  2   7.2   3.9
 11500   2.9  37.2  330  11  5   6.7   3.7 |   3.9  39.0  340   3  2   7.2   3.9
 11000   3.9  39.0  325  10  5   6.9   3.8 |   5.0  41.0  315   4  2   6.9   3.8
 10500   5.0  41.0  325   9  4   5.3   2.9 |   6.0  42.8  305   6  3   4.8   2.7
 10250   5.3  41.5  325   8  4   4.1   2.3 |   6.3  43.3  300   6  3   4.3   2.4
 10000   5.7  42.3  325   8  4   7.8   4.3 |   6.8  44.2  300   7  3   9.7   5.3
  9750   6.4  43.5  325   7  4   9.7   5.3 |   7.7  45.9  295   7  3  11.8   6.5
  9500   7.0  44.6  330   6  3   7.7   4.2 |   8.5  47.3  295   7  3   9.4   5.1
  9250   7.5  45.5  325   6  3   5.2   2.8 |   9.0  48.2  285   6  3   6.2   3.4
  9000   7.9  46.2  320   5  3   7.3   4.0 |   9.5  49.1  275   6  3   7.9   4.3
  8750   8.6  47.5  310   4  2   9.3   5.1 |  10.2  50.4  260   6  3  10.3   5.6
  8500   9.2  48.6  300   4  2   7.7   4.2 |  10.9  51.6  245   7  3   7.3   4.0
  8250   9.7  49.5  285   4  2   6.5   3.6 |  11.3  52.3  235   7  4   4.9   2.7
  8000  10.2  50.4  270   3  2   7.4   4.0 |  11.7  53.1  225   8  4   6.1   3.3
  7750  10.8  51.4  250   4  2   8.1   4.5 |  12.2  54.0  220   9  5   7.0   3.8
  7500  11.4  52.5  240   4  2   7.6   4.2 |  12.7  54.9  215  11  5   6.9   3.8
  7250  11.9  53.4  225   5  2   7.1   3.9 |  13.2  55.8  210  12  6   6.5   3.6
  7000  12.5  54.5  220   5  3   7.4   4.1 |  13.7  56.7  210  13  6   6.9   3.8
  6750  13.0  55.4  210   6  3   8.1   4.4 |  14.2  57.6  205  14  7   7.4   4.1
  6500  13.6  56.5  210   7  4   7.2   4.0 |  14.7  58.5  205  15  8   5.8   3.2
  6250  14.2  57.6  215   9  5  10.6   5.8 |  15.2  59.4  210  15  8  10.2   5.6
  6000  14.8  58.6  215  10  5  -2.3  -1.2 |  15.7  60.3  210  16  8  -6.5  -3.6
  5750  13.4  56.1  215  10  5 -28.7 -15.8 |  13.6  56.5  205  15  7 -42.2 -23.1
  5500  10.6  51.1  205   8  4 -33.2 -18.2 |   9.7  49.5  200  11  5 -50.4 -27.7
________________________________________________________________________________

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

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

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

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

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

DEFINITIONS:

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

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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