Soaring Guidance
Issued by NWS Denver/Boulder, CO

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000
UXUS97 KBOU 300052
SRGBOU

Soaring Forecast
National Weather Service Denver/Boulder, Colorado
1752 MST Thursday, January 29, 2015

This forecast is for Friday, January 30, 2015:

If the trigger temperature of 55.5 F/13.1 C is reached...then
   Thermal Soaring Index....................... Poor
   Maximum rate of lift........................ 0 ft/min (0.0 m/s)
   Maximum height of thermals.................. 7849 ft MSL (2562 ft AGL)

Forecast maximum temperature................... 50.0 F/10.5 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................. 6683 ft MSL (1396 ft AGL)
Thermal soaring outlook for Saturday 01/31..... Poor

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 PVA
Potential height of wave....................... 23533 ft MSL (18246 ft AGL)
Wave soaring outlook for Saturday 01/31........ Poor

Remarks...

Sunrise/Sunset.................... 07:09:13 / 17:15:21 MST
Total possible sunshine........... 10 hr 6 min 8 sec (606 min 8 sec)
Altitude of sun at 12:12:39 MST... 32.70 degrees

Upper air data from numerical model forecast valid on 01/30/2015 at 0500 MST

Freezing level.................. 9853 ft MSL (4566 ft AGL)
Convective condensation level... 13931 ft MSL (8644 ft AGL)
Lifted condensation level....... 10902 ft MSL (5614 ft AGL)
Lifted index.................... +9.6
K index......................... +17.6

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  -61.0 -77.8   290   36   18   2.0   1.1      M     M       M      M    M
 45000  -58.2 -72.8   285   49   25  -1.1  -0.6      M     M       M      M    M
 40000  -61.3 -78.3   265   82   42  -2.1  -1.1      M     M       M      M    M
 38000  -60.0 -76.0   260   88   45   5.3   2.9      M     M       M      M    M
 36000  -56.8 -70.2   260   87   45   5.3   2.9      M     M       M      M    M
 34000  -52.4 -62.3   255   83   42   9.1   5.0      M     M       M      M    M
 32000  -47.0 -52.6   260   73   38   9.1   5.0      M     M       M      M    M
 30000  -41.8 -43.2   270   64   33   8.0   4.4   34.4  93.9    18.3      M    M
 29000  -39.4 -38.9   275   59   30   8.0   4.4   33.6  92.5    18.0      M    M
 28000  -37.0 -34.6   280   55   28   8.0   4.4   33.0  91.4    17.7      M    M
 27000  -34.6 -30.3   285   51   26   8.6   4.7   32.5  90.4    17.5      M    M
 26000  -32.0 -25.6   285   47   24   8.6   4.7   31.9  89.4    17.2      M    M
 25000  -29.5 -21.1   280   42   22   8.6   4.7   31.5  88.6    17.1      M    M
 24000  -27.0 -16.6   280   38   20   6.9   3.8   31.1  87.9    16.9      M    M
 23000  -25.1 -13.2   275   34   17   6.3   3.5   29.7  85.4    16.0      M    M
 22000  -23.2  -9.8   270   30   15   6.3   3.5   28.4  83.2    15.1      M    M
 21000  -21.4  -6.5   265   26   13   6.4   3.5   27.3  81.1    14.3      M    M
 20000  -19.5  -3.1   265   23   12   6.4   3.5   26.0  78.8    13.4      M    M
 19500  -18.5  -1.3   260   21   11   6.4   3.5   25.4  77.8    12.9      M    M
 19000  -17.6   0.3   260   19   10   6.5   3.6   24.9  76.8    12.5      M    M
 18500  -16.7   1.9   260   18    9   5.3   2.9   24.3  75.7    12.0      M    M
 18000  -15.9   3.4   255   17    9   5.1   2.8   23.4  74.2    11.4      M    M
 17500  -15.2   4.6   250   16    8   5.3   2.9   22.6  72.7    10.7      M    M
 17000  -14.3   6.3   245   15    7   6.1   3.3   21.9  71.5    10.2      M    M
 16500  -13.0   8.6   245   13    7   6.2   3.4   21.0  69.8     9.4      M    M
 16000  -12.1  10.2   245   11    6   6.3   3.5   20.4  68.7     8.9      M    M
 15500  -11.1  12.0   240   10    5   6.4   3.5   19.9  67.7     8.4      M    M
 15000  -10.1  13.8   245    9    5   7.1   3.9   19.4  66.8     8.0      M    M
 14500   -9.1  15.6   245    9    4   7.1   3.9   18.9  66.0     7.6      M    M
 14000   -8.1  17.4   245    8    4   6.2   3.4   18.4  65.1     7.2      M    M
 13500   -7.2  19.0   250    8    4   6.3   3.5   17.8  64.1     6.7      M    M
 13000   -6.3  20.7   250    8    4   6.1   3.3   17.2  63.0     6.1      M    M
 12500   -5.4  22.3   255    9    4   6.0   3.3   16.6  61.9     5.6      M    M
 12000   -4.5  23.9   255    9    5   6.7   3.7   16.1  61.0     5.1      M    M
 11500   -3.5  25.7   260    9    5   6.6   3.6   15.6  60.1     4.7      M    M
 11000   -2.3  27.9   260    9    5   9.0   4.9   15.3  59.5     4.4      M    M
 10500   -1.0  30.2   260   10    5  10.1   5.6   15.1  59.2     4.3      M    M
 10250   -0.3  31.5   260   10    5   4.5   2.5   15.1  59.1     4.3      M    M
 10000   -0.2  31.6   260   10    5   2.5   1.4   14.4  57.9     3.6      M    M
  9750    0.2  32.4   260   10    5   7.1   3.9   14.1  57.4     3.4      M    M
  9500    0.7  33.3   260   10    5   6.7   3.7   13.9  56.9     3.1      M    M
  9250    1.2  34.2   260   10    5   4.3   2.4   13.6  56.4     2.9      M    M
  9000    1.4  34.5   255   10    5   2.5   1.4   13.0  55.5     2.4      M    M
  8750    1.7  35.1   255    9    5   4.4   2.4   12.5  54.6     1.9      M    M
  8500    2.0  35.6   255    9    5   4.1   2.2   12.1  53.9     1.5      M    M
  8250    2.2  36.0   255    9    4   2.1   1.2   11.6  52.9     1.0      M    M
  8000    2.3  36.1   250    8    4   1.5   0.8   11.0  51.8     0.4      M    M
  7750    2.4  36.3   250    8    4   0.9   0.5   10.4  50.6    -0.2    192  1.0
  7500    2.5  36.5   250    7    4   1.0   0.6    9.6  49.4    -0.9    183  0.9
  7250    2.6  36.7   250    7    4   1.9   1.1    9.0  48.2    -1.5    172  0.9
  7000    2.7  36.9   250    8    4   1.8   1.0    8.4  47.1    -2.2    161  0.8
  6750    2.8  37.0   245    8    4   1.7   0.9    7.8  46.1    -2.8    150  0.8
  6500    2.9  37.2   240    8    4  -0.1  -0.1    7.1  44.9    -3.4    141  0.7
  6250    2.8  37.0   225    8    4  -0.3  -0.2    6.3  43.4    -4.3    136  0.7
  6000    2.8  37.0   215    9    5  -3.0  -1.6    5.6  42.0    -5.1    130  0.7
  5750    2.3  36.1   215    8    4  -8.4  -4.6    4.4  39.9    -6.3    138  0.7
  5500    1.6  34.9   210    5    3  -8.5  -4.7    3.0  37.4    -7.7    151  0.8

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

           01/30/2015 at 0800 MST          |       01/30/2015 at 1100 MST
                                           |
K index... +18.2  LI... +3.2               | K index... +16.5  LI... +4.5
CAPE... 0.0  CIN... M                      | CAPE... 0.0  CIN... -0.7
                                           |
Height Temperature  Wnd WndSpd  Lapse Rate | Temperature  Wnd WndSpd  Lapse Rate
ft MSL deg C deg F  Dir kt m/s  C/km F/kft | deg C deg F  Dir kt m/s  C/km F/kft
--------------------------------------------------------------------------------
 50000 -60.7 -77.3  295  35 18   1.9   1.0 | -60.5 -76.9  295  31 16   1.9   1.0
 45000 -58.0 -72.4  285  45 23  -0.3  -0.2 | -57.8 -72.0  285  42 21  -1.1  -0.6
 40000 -60.6 -77.1  265  83 43  -1.8  -1.0 | -62.5 -80.5  255  75 39  -3.0  -1.7
 38000 -59.2 -74.6  260  88 45   4.9   2.7 | -60.5 -76.9  250  81 42   6.8   3.7
 36000 -56.3 -69.3  255  87 45   4.9   2.7 | -56.5 -69.7  250  83 43   6.8   3.7
 34000 -52.6 -62.7  255  82 42   8.8   4.9 | -52.0 -61.6  250  79 41   9.0   4.9
 32000 -47.3 -53.1  255  68 35   8.9   4.9 | -46.6 -51.9  255  66 34   9.0   4.9
 30000 -42.0 -43.6  260  56 29   8.7   4.8 | -41.3 -42.3  255  54 28   8.9   4.9
 29000 -39.4 -38.9  265  52 27   8.7   4.8 | -38.6 -37.5  255  49 25   8.9   4.9
 28000 -36.8 -34.2  265  47 24   8.7   4.8 | -35.3 -31.5  260  43 22   8.9   4.9
 27000 -33.6 -28.5  270  42 22   7.8   4.3 | -32.8 -27.0  260  40 20   7.6   4.2
 26000 -31.3 -24.3  275  39 20   7.9   4.3 | -30.5 -22.9  265  37 19   7.7   4.2
 25000 -29.0 -20.2  275  36 19   7.9   4.3 | -28.2 -18.8  265  35 18   7.7   4.2
 24000 -26.6 -15.9  280  33 17   7.3   4.0 | -26.0 -14.8  265  33 17   6.8   3.7
 23000 -24.5 -12.1  280  31 16   7.2   3.9 | -24.0 -11.2  270  30 15   6.7   3.7
 22000 -22.4  -8.3  285  29 15   7.2   4.0 | -22.0  -7.6  275  26 13   6.7   3.7
 21000 -20.4  -4.7  285  27 14   5.0   2.8 | -20.1  -4.2  275  23 12   6.4   3.5
 20000 -18.9  -2.0  280  23 12   5.3   2.9 | -18.1  -0.6  275  23 12   6.5   3.6
 19500 -18.1  -0.6  275  22 11   5.3   2.9 | -17.2   1.0  275  23 12   6.5   3.6
 19000 -17.3   0.9  270  20 10   5.2   2.9 | -16.2   2.8  275  23 12   6.6   3.6
 18500 -16.5   2.3  265  19 10   5.7   3.1 | -15.4   4.3  275  22 12   5.0   2.7
 18000 -15.7   3.7  265  18  9   5.7   3.1 | -14.6   5.7  275  21 11   4.9   2.7
 17500 -14.9   5.2  265  16  8   5.8   3.2 | -13.9   7.0  270  21 11   5.0   2.8
 17000 -14.0   6.8  265  15  8   5.8   3.2 | -13.2   8.2  270  19 10   5.5   3.0
 16500 -13.2   8.2  260  14  7   5.8   3.2 | -12.4   9.7  265  17  9   5.5   3.0
 16000 -12.3   9.9  260  12  6   5.6   3.1 | -11.6  11.1  260  15  8   5.0   2.7
 15500 -11.5  11.3  255  10  5   5.6   3.1 | -10.9  12.4  255  13  7   5.0   2.8
 15000 -10.7  12.7  250   9  4   6.1   3.4 | -10.1  13.8  250  11  6   4.9   2.7
 14500  -9.8  14.4  255   8  4   6.3   3.4 |  -9.4  15.1  250   9  5   4.9   2.7
 14000  -8.4  16.9  265   6  3   6.6   3.6 |  -8.3  17.1  245   7  4   5.5   3.0
 13500  -7.4  18.7  275   6  3   6.6   3.6 |  -7.6  18.3  245   6  3   5.3   2.9
 13000  -6.5  20.3  285   6  3   6.5   3.6 |  -6.7  19.9  250   5  2   6.2   3.4
 12500  -5.5  22.1  295   6  3   6.5   3.6 |  -5.8  21.6  270   4  2   6.2   3.4
 12000  -4.5  23.9  300   6  3   6.7   3.7 |  -4.8  23.4  285   4  2   7.2   3.9
 11500  -3.5  25.7  305   6  3   6.6   3.6 |  -3.8  25.2  305   4  2   7.2   4.0
 11000  -2.4  27.7  310   6  3   8.3   4.5 |  -2.7  27.1  320   5  2   7.4   4.1
 10500  -1.2  29.8  315   6  3   9.5   5.2 |  -1.6  29.1  340   6  3   8.2   4.5
 10250  -0.6  30.9  320   6  3   3.5   1.9 |  -1.0  30.2  345   6  3   4.3   2.4
 10000  -0.5  31.1  320   6  3   3.9   2.2 |  -0.8  30.6  345   6  3   5.2   2.9
  9750   0.1  32.2  320   6  3  10.2   5.6 |  -0.2  31.6  350   7  4   9.6   5.3
  9500   0.8  33.4  320   6  3   9.0   4.9 |   0.5  32.9  355   8  4   8.9   4.9
  9250   1.5  34.7  320   6  3   6.2   3.4 |   1.1  34.0  355   8  4   6.7   3.7
  9000   1.7  35.1  320   6  3   3.4   1.9 |   1.5  34.7  355   8  4   4.9   2.7
  8750   2.1  35.8  315   6  3   4.9   2.7 |   2.0  35.6  355   9  4   6.8   3.7
  8500   2.4  36.3  310   5  3   4.4   2.4 |   2.5  36.5  355   9  4   6.7   3.6
  8250   2.7  36.9  300   5  3   2.8   1.5 |   2.9  37.2  350   8  4   5.6   3.1
  8000   2.8  37.0  295   5  3   1.8   1.0 |   3.3  37.9  350   8  4   4.9   2.7
  7750   3.0  37.4  285   5  3   3.5   1.9 |   3.7  38.7  345   8  4   5.0   2.8
  7500   3.3  37.9  280   5  3   1.4   0.8 |   4.0  39.2  345   8  4   2.3   1.3
  7250   3.2  37.8  280   5  3  -1.6  -0.9 |   4.0  39.2  340   7  4  -0.4  -0.2
  7000   3.1  37.6  280   5  3  -1.4  -0.7 |   4.0  39.2  335   7  3  -0.2  -0.1
  6750   3.0  37.4  280   5  3  -0.7  -0.4 |   4.0  39.2  330   6  3   0.2   0.1
  6500   3.0  37.4  280   5  3  -0.7  -0.4 |   3.9  39.0  330   6  3  -0.8  -0.4
  6250   2.9  37.2  275   5  3  -0.5  -0.3 |   3.8  38.8  325   5  2  -0.3  -0.2
  6000   2.8  37.0  270   6  3  -3.4  -1.9 |   3.8  38.8  325   3  2  -4.8  -2.6
  5750   2.2  36.0  270   5  3  -9.8  -5.4 |   3.4  38.1  315   2  1   2.0   1.1
  5500   1.4  34.5  265   3  2 -11.1  -6.1 |   4.5  40.1  315   2  1  26.7  14.7

           01/30/2015 at 1400 MST          |       01/30/2015 at 1700 MST
                                           |
K index... +15.7  LI... +5.4               | K index... +15.6  LI... +5.7
CAPE... 0.0  CIN... -0.4                   | CAPE... 0.0  CIN... -0.4
                                           |
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 -60.8 -77.4  285  34 18   2.2   1.2 | -60.5 -76.9  290  36 19   2.5   1.4
 45000 -57.6 -71.7  280  44 23  -1.3  -0.7 | -56.9 -70.4  280  45 23  -0.8  -0.4
 40000 -61.5 -78.7  255  62 32  -2.6  -1.4 | -59.9 -75.8  260  55 28  -2.0  -1.1
 38000 -60.3 -76.5  250  68 35   5.7   3.1 | -59.1 -74.4  255  60 31   4.4   2.4
 36000 -56.4 -69.5  250  72 37   5.7   3.1 | -56.4 -69.5  250  64 33   4.4   2.4
 34000 -52.2 -62.0  245  72 37   9.7   5.3 | -52.3 -62.1  250  65 33   9.7   5.3
 32000 -46.3 -51.3  250  68 35   9.7   5.3 | -46.5 -51.7  250  58 30   9.7   5.3
 30000 -40.7 -41.3  250  61 31   8.9   4.9 | -40.9 -41.6  250  52 27   8.9   4.9
 29000 -38.0 -36.4  250  56 29   8.9   4.9 | -38.2 -36.8  250  48 25   8.9   4.9
 28000 -35.4 -31.7  250  51 26   8.9   4.9 | -35.5 -31.9  250  45 23   8.9   4.9
 27000 -32.8 -27.0  250  46 24   7.8   4.3 | -33.0 -27.4  250  41 21   7.5   4.1
 26000 -30.5 -22.9  255  42 21   7.8   4.3 | -30.8 -23.4  250  36 19   7.4   4.0
 25000 -28.1 -18.6  255  37 19   7.8   4.3 | -28.6 -19.5  255  32 16   7.4   4.0
 24000 -25.8 -14.4  260  33 17   7.2   3.9 | -26.4 -15.5  255  27 14   7.3   4.0
 23000 -23.8 -10.8  260  30 15   6.7   3.7 | -24.3 -11.7  260  25 13   7.2   3.9
 22000 -21.8  -7.2  260  27 14   6.7   3.7 | -22.1  -7.8  260  22 11   7.2   3.9
 21000 -19.9  -3.8  260  24 12   6.2   3.4 | -20.0  -4.0  260  20 10   6.6   3.6
 20000 -18.0  -0.4  265  22 11   6.2   3.4 | -18.1  -0.6  260  18  9   6.4   3.5
 19500 -17.1   1.2  265  21 11   6.2   3.4 | -17.2   1.0  260  17  9   6.4   3.5
 19000 -16.2   2.8  265  20 10   6.2   3.4 | -16.3   2.7  260  16  8   6.4   3.5
 18500 -15.3   4.5  270  19 10   6.2   3.4 | -15.3   4.5  260  15  8   6.3   3.4
 18000 -14.4   6.1  270  18  9   6.2   3.4 | -14.4   6.1  260  14  7   6.1   3.3
 17500 -13.5   7.7  270  17  9   6.2   3.4 | -13.5   7.7  260  13  7   6.1   3.4
 17000 -12.2  10.0  270  16  8   6.0   3.3 | -12.3   9.9  260  12  6   5.5   3.0
 16500 -11.3  11.7  265  15  8   5.7   3.1 | -11.5  11.3  260  11  6   5.4   3.0
 16000 -10.6  12.9  265  14  7   4.1   2.3 | -10.8  12.6  260  10  5   4.4   2.4
 15500 -10.0  14.0  265  12  6   4.3   2.3 | -10.1  13.8  255   9  5   4.6   2.5
 15000  -9.4  15.1  260  11  6   3.5   1.9 |  -9.5  14.9  255   8  4   3.7   2.0
 14500  -8.9  16.0  260   9  5   3.6   2.0 |  -9.0  15.8  260   6  3   3.7   2.0
 14000  -8.3  17.1  260   7  4   4.1   2.2 |  -8.4  16.9  265   5  2   3.7   2.0
 13500  -7.7  18.1  260   6  3   4.1   2.3 |  -7.9  17.8  275   3  2   3.7   2.0
 13000  -7.1  19.2  270   4  2   4.7   2.6 |  -7.3  18.9  305   2  1   3.7   2.0
 12500  -6.4  20.5  285   3  2   4.8   2.6 |  -6.8  19.8  340   3  1   3.8   2.1
 12000  -5.7  21.7  310   3  2   5.7   3.1 |  -6.2  20.8  005   4  2   4.5   2.5
 11500  -4.7  23.5  350   4  2   6.0   3.3 |  -5.5  22.1  015   6  3   5.1   2.8
 11000  -3.8  25.2  010   5  3   7.6   4.2 |  -4.7  23.5  020   8  4   5.1   2.8
 10500  -2.6  27.3  015   8  4   9.0   4.9 |  -4.0  24.8  025   9  5   5.8   3.2
 10250  -2.0  28.4  020   9  5   4.8   2.6 |  -3.6  25.5  030  10  5   2.3   1.3
 10000  -1.7  28.9  020   9  5   5.0   2.8 |  -3.5  25.7  030  11  6   3.8   2.1
  9750  -1.1  30.0  020  10  5   9.4   5.2 |  -2.9  26.8  030  12  6   8.8   4.8
  9500  -0.5  31.1  020  11  6   8.5   4.7 |  -2.3  27.9  030  13  7   7.9   4.4
  9250   0.1  32.2  020  12  6   7.7   4.2 |  -1.7  28.9  030  15  8   7.9   4.4
  9000   0.6  33.1  020  13  7   6.3   3.5 |  -1.1  30.0  030  15  8   7.9   4.3
  8750   1.1  34.0  020  13  7   7.0   3.8 |  -0.4  31.3  030  16  8   8.5   4.7
  8500   1.7  35.1  025  14  7   7.3   4.0 |   0.2  32.4  030  16  8   9.1   5.0
  8250   2.2  36.0  025  14  7   5.7   3.1 |   0.9  33.6  035  17  9   7.3   4.0
  8000   2.6  36.7  025  13  7   4.4   2.4 |   1.3  34.3  035  16  8   5.6   3.1
  7750   2.9  37.2  025  13  7   4.5   2.5 |   1.8  35.2  040  15  7   5.8   3.2
  7500   3.2  37.8  020  12  6   3.8   2.1 |   2.2  36.0  040  13  7   5.9   3.2
  7250   3.5  38.3  020  11  5   3.1   1.7 |   2.6  36.7  035  11  6   6.6   3.6
  7000   3.7  38.7  020   9  5   3.0   1.7 |   3.1  37.6  030   9  5   7.0   3.8
  6750   3.9  39.0  020   7  4   2.3   1.3 |   3.5  38.3  015   7  4   6.1   3.4
  6500   4.1  39.4  020   5  3   6.5   3.6 |   4.0  39.2  355   7  3   7.9   4.3
  6250   4.8  40.6  015   4  2  10.6   5.8 |   4.7  40.5  350   7  3   9.8   5.4
  6000   5.5  41.9  015   3  2   8.5   4.7 |   5.4  41.7  350   7  3   9.5   5.2
  5750   6.2  43.2  010   2  1  10.9   6.0 |   6.0  42.8  350   7  4   8.5   4.6
  5500   7.2  45.0  005   3  1  17.7   9.7 |   6.5  43.7  350   6  3   5.7   3.1
________________________________________________________________________________

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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