Soaring Guidance
Issued by NWS Denver/Boulder, CO

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453
UXUS97 KBOU 250004
SRGBOU

Soaring Forecast
National Weather Service Denver/Boulder, Colorado
1704 MST Sunday, November 24, 2024

This forecast is for Monday, November 25, 2024:

If the trigger temperature of 40.4 F/4.7 C is reached...then
   Thermal Soaring Index....................... Good
   Maximum rate of lift........................ 535 ft/min (2.7 m/s)
   Maximum height of thermals.................. 12327 ft MSL (7012 ft AGL)

Forecast maximum temperature................... 47.0 F/8.8 C
Time of trigger temperature.................... 1045 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................. 9843 ft MSL (4528 ft AGL)
Thermal soaring outlook for Tuesday 11/26...... 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)................ Neither
Potential height of wave....................... 38292 ft MSL (32977 ft AGL)
Wave soaring outlook for Tuesday 11/26......... Poor

Remarks...

Sunrise/Sunset.................... 06:56:08 / 16:37:15 MST
Total possible sunshine........... 9 hr 41 min 8 sec (581 min 8 sec)
Altitude of sun at 11:46:42 MST... 29.20 degrees

Upper air data from numerical model forecast valid on 11/25/2024 at 0500 MST

Freezing level.................. Entire airmass below 32 F / 0 C
Convective condensation level... 10149 ft MSL (4834 ft AGL)
Lifted condensation level....... 11244 ft MSL (5929 ft AGL)
Lifted index.................... +6.4
K index......................... +10.2

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  -59.9 -75.8   265   63   32   2.7   1.5      M     M       M      M    M
 45000  -55.6 -68.1   270   68   35   2.8   1.5      M     M       M      M    M
 40000  -53.4 -64.1   270   85   44   1.4   0.8      M     M       M      M    M
 38000  -52.6 -62.7   270   90   46   1.0   0.5      M     M       M      M    M
 36000  -52.1 -61.8   270   92   47   1.0   0.5      M     M       M      M    M
 34000  -51.5 -60.7   270   94   48   1.1   0.6      M     M       M      M    M
 32000  -48.5 -55.3   270   89   46   4.7   2.6      M     M       M      M    M
 30000  -45.7 -50.3   270   84   43   6.5   3.6   31.8  89.2    17.5      M    M
 29000  -43.5 -46.3   270   82   42   7.2   3.9   30.6  87.1    16.8      M    M
 28000  -41.4 -42.5   270   81   42   7.2   3.9   29.6  85.2    16.3      M    M
 27000  -39.2 -38.6   270   80   41   7.2   4.0   28.7  83.6    15.8      M    M
 26000  -37.4 -35.3   270   76   39   5.6   3.1   27.3  81.1    14.9      M    M
 25000  -35.7 -32.3   270   72   37   5.5   3.0   25.6  78.1    13.8      M    M
 24000  -34.0 -29.2   270   67   35   5.6   3.0   24.1  75.5    12.7      M    M
 23000  -32.3 -26.1   270   63   32   6.1   3.3   22.7  72.8    11.7      M    M
 22000  -30.5 -22.9   270   59   30   6.1   3.3   21.3  70.3    10.7      M    M
 21000  -28.7 -19.7   270   54   28   6.4   3.5   20.0  68.1     9.8      M    M
 20000  -27.5 -17.5   270   48   25   3.0   1.6   17.9  64.2     8.0      M    M
 19500  -27.1 -16.8   270   44   23   3.0   1.7   16.7  62.0     7.1      M    M
 19000  -26.6 -15.9   270   41   21   3.0   1.7   15.5  59.9     6.1      M    M
 18500  -26.2 -15.2   270   37   19   2.9   1.6   14.4  57.8     5.1      M    M
 18000  -25.6 -14.1   270   35   18   4.4   2.4   13.3  56.0     4.3      M    M
 17500  -25.0 -13.0   275   33   17   4.4   2.4   12.4  54.3     3.4      M    M
 17000  -23.8 -10.8   275   32   16   7.4   4.0   11.2  52.2     2.5      M    M
 16500  -22.8  -9.0   275   31   16   7.0   3.9   10.8  51.4     2.1      M    M
 16000  -21.7  -7.1   275   30   16   8.2   4.5   10.4  50.7     1.7      M    M
 15500  -20.4  -4.7   275   30   15   8.4   4.6   10.2  50.3     1.5      M    M
 15000  -19.2  -2.6   280   29   15   8.6   4.7   10.0  49.9     1.3      M    M
 14500  -17.9  -0.2   280   28   14   8.7   4.8    9.8  49.6     1.1      M    M
 14000  -16.6   2.1   280   27   14   8.5   4.7    9.6  49.3     0.9      M    M
 13500  -15.4   4.3   280   25   13   8.3   4.5    9.4  48.8     0.7      M    M
 13000  -14.2   6.4   285   23   12   7.9   4.3    9.1  48.4     0.5      M    M
 12500  -13.1   8.4   285   22   11   7.3   4.0    8.7  47.7     0.1      M    M
 12000  -12.0  10.4   290   20   10   7.0   3.8    8.4  47.0    -0.3    499  2.5
 11500  -11.0  12.2   290   18    9   6.5   3.6    7.8  46.1    -0.8    455  2.3
 11000  -10.1  13.8   295   16    8   5.9   3.3    7.3  45.2    -1.3    412  2.1
 10500   -9.3  15.3   305   15    8   5.4   3.0    6.6  43.9    -2.0    373  1.9
 10250   -8.9  16.0   305   14    7   5.1   2.8    6.3  43.3    -2.3    354  1.8
 10000   -8.6  16.5   310   14    7   3.4   1.9    5.9  42.5    -2.7    337  1.7
  9750   -8.3  17.1   310   13    7   5.5   3.0    5.4  41.7    -3.2    322  1.6
  9500   -7.7  18.1   315   13    7   8.5   4.7    5.2  41.4    -3.4    297  1.5
  9250   -7.2  19.0   315   12    6   6.1   3.4    5.0  41.1    -3.5    273  1.4
  9000   -6.9  19.6   315   12    6   3.2   1.7    4.6  40.3    -4.0    256  1.3
  8750   -6.7  19.9   315   11    6   1.8   1.0    4.1  39.3    -4.5    244  1.2
  8500   -6.6  20.1   315   10    5   0.8   0.4    3.4  38.1    -5.2    234  1.2
  8250   -6.5  20.3   315    9    5   3.9   2.1    2.8  37.0    -5.8    223  1.1
  8000   -6.1  21.0   315    9    5   6.3   3.4    2.5  36.4    -6.2    203  1.0
  7750   -5.7  21.7   315    8    4   6.2   3.4    2.2  35.9    -6.5    183  0.9
  7500   -5.2  22.6   310    8    4   6.9   3.8    1.9  35.5    -6.7    161  0.8
  7250   -4.7  23.5   315    7    4   6.1   3.3    1.7  35.0    -7.0    139  0.7
  7000   -4.2  24.4   325    6    3   6.5   3.6    1.4  34.5    -7.3    118  0.6
  6750   -3.8  25.2   340    6    3   4.7   2.6    1.1  34.1    -7.6     97  0.5
  6500   -3.5  25.7   355    5    3   5.3   2.9    0.7  33.3    -8.0     81  0.4
  6250   -2.9  26.8   005    5    2   7.7   4.2    0.5  32.9    -8.3     58  0.3
  6000   -2.4  27.7   015    4    2   7.1   3.9    0.3  32.6    -8.5     35  0.2
  5750   -1.8  28.8   030    3    2   9.2   5.0    0.2  32.3    -8.7     10  0.0
  5500   -1.1  30.0   030    3    2  11.4   6.2    0.2  32.4    -8.7      M    M

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

           11/25/2024 at 0800 MST          |       11/25/2024 at 1100 MST
                                           |
CAPE...    +0.4    LI...       +4.4        | CAPE...     0.0    LI...       +4.2
CINH...     0.0    K Index...  -2.6        | CINH...    -0.0    K Index... -18.5
                                           |
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 -59.7 -75.5  270  54 28   2.4   1.3 | -59.4 -74.9  270  54 28   1.9   1.0
 45000 -55.9 -68.6  275  58 30   2.5   1.4 | -56.4 -69.5  275  60 31   1.9   1.1
 40000 -54.0 -65.2  275  83 43   1.2   0.7 | -55.7 -68.3  275  84 43   0.4   0.2
 38000 -53.3 -63.9  275  90 46   1.3   0.7 | -55.1 -67.2  280  91 47   2.2   1.2
 36000 -52.5 -62.5  275  92 47   1.3   0.7 | -53.7 -64.7  280  95 49   2.2   1.2
 34000 -51.6 -60.9  280  93 48   3.9   2.1 | -52.1 -61.8  280  99 51   5.1   2.8
 32000 -48.8 -55.8  280  89 46   4.6   2.5 | -49.0 -56.2  280  93 48   5.2   2.9
 30000 -45.9 -50.6  280  86 44   7.0   3.8 | -45.7 -50.3  280  88 45   6.9   3.8
 29000 -43.7 -46.7  280  84 43   7.4   4.1 | -43.7 -46.7  280  83 43   6.8   3.7
 28000 -41.4 -42.5  280  82 42   7.4   4.1 | -41.7 -43.1  280  79 41   6.8   3.7
 27000 -39.2 -38.6  280  80 41   7.5   4.1 | -39.6 -39.3  280  75 39   6.7   3.7
 26000 -37.3 -35.1  280  76 39   5.9   3.2 | -37.4 -35.3  285  72 37   7.8   4.3
 25000 -35.5 -31.9  280  71 37   5.9   3.2 | -35.0 -31.0  285  70 36   7.8   4.3
 24000 -33.7 -28.7  280  67 34   5.9   3.2 | -32.7 -26.9  285  67 35   8.0   4.4
 23000 -32.2 -26.0  285  61 31   4.7   2.6 | -30.9 -23.6  285  62 32   4.8   2.6
 22000 -30.8 -23.4  285  54 28   4.7   2.6 | -29.5 -21.1  285  56 29   4.8   2.6
 21000 -29.4 -20.9  285  47 24   4.7   2.6 | -28.1 -18.6  285  50 26   4.8   2.6
 20000 -27.9 -18.2  285  40 21   4.8   2.6 | -26.6 -15.9  285  43 22   4.7   2.6
 19500 -27.2 -17.0  285  37 19   4.8   2.6 | -25.9 -14.6  285  39 20   4.7   2.6
 19000 -26.5 -15.7  285  34 18   4.8   2.6 | -25.2 -13.4  285  35 18   4.7   2.6
 18500 -25.8 -14.4  285  31 16   4.7   2.6 | -24.1 -11.4  285  30 15   5.2   2.9
 18000 -24.5 -12.1  285  28 14   5.8   3.2 | -23.3  -9.9  285  27 14   5.5   3.0
 17500 -23.7 -10.7  285  26 13   5.8   3.2 | -22.5  -8.5  285  24 12   5.6   3.1
 17000 -22.8  -9.0  290  24 13   6.2   3.4 | -21.6  -6.9  285  22 11   6.1   3.3
 16500 -21.8  -7.2  290  23 12   6.2   3.4 | -20.7  -5.3  285  20 10   6.0   3.3
 16000 -20.9  -5.6  290  22 11   6.6   3.6 | -19.7  -3.5  290  19 10   6.9   3.8
 15500 -19.9  -3.8  285  21 11   6.6   3.6 | -18.7  -1.7  285  17  9   6.9   3.8
 15000 -18.9  -2.0  285  21 11   6.9   3.8 | -17.7   0.1  285  17  8   6.8   3.7
 14500 -17.9  -0.2  285  20 10   7.0   3.8 | -16.7   1.9  285  16  8   6.8   3.7
 14000 -16.9   1.6  285  20 10   7.1   3.9 | -15.7   3.7  285  16  8   6.8   3.7
 13500 -15.8   3.6  285  19 10   7.2   4.0 | -14.7   5.5  285  15  8   6.8   3.7
 13000 -14.7   5.5  285  18  9   7.3   4.0 | -13.7   7.3  280  15  8   6.8   3.8
 12500 -13.6   7.5  285  17  9   7.4   4.1 | -12.7   9.1  280  15  8   6.9   3.8
 12000 -12.6   9.3  285  16  8   7.2   4.0 | -11.6  11.1  280  15  8   7.1   3.9
 11500 -11.5  11.3  290  15  8   7.1   3.9 | -10.6  12.9  280  15  8   7.3   4.0
 11000 -10.5  13.1  290  15  7   7.1   3.9 |  -9.5  14.9  280  15  8   7.0   3.8
 10500  -9.4  15.1  295  13  7   7.4   4.0 |  -8.5  16.7  280  14  7   7.3   4.0
 10250  -8.9  16.0  295  12  6   6.1   3.4 |  -8.0  17.6  280  13  7   5.2   2.9
 10000  -8.6  16.5  295  12  6   3.6   2.0 |  -7.8  18.0  280  13  7   3.2   1.8
  9750  -8.2  17.2  295  12  6   7.0   3.8 |  -7.4  18.7  280  12  6   7.0   3.8
  9500  -7.5  18.5  295  11  5  10.7   5.9 |  -6.8  19.8  280  11  6   9.9   5.4
  9250  -6.8  19.8  300  10  5   7.8   4.3 |  -6.1  21.0  280   9  5   7.3   4.0
  9000  -6.4  20.5  300  10  5   4.8   2.7 |  -5.7  21.7  280   8  4   5.0   2.7
  8750  -6.0  21.2  300  10  5   6.4   3.5 |  -5.3  22.5  275   7  4   7.2   3.9
  8500  -5.5  22.1  300   8  4   7.7   4.2 |  -4.7  23.5  270   6  3   8.4   4.6
  8250  -5.0  23.0  295   7  4   5.5   3.0 |  -4.2  24.4  260   5  2   6.9   3.8
  8000  -4.6  23.7  290   7  4   4.5   2.4 |  -3.7  25.3  255   4  2   5.7   3.1
  7750  -4.3  24.3  280   8  4   4.5   2.5 |  -3.2  26.2  245   4  2   8.3   4.5
  7500  -4.0  24.8  270   6  3   3.9   2.1 |  -2.6  27.3  220   4  2   8.2   4.5
  7250  -3.8  25.2  260   6  3   3.8   2.1 |  -2.1  28.2  210   4  2   5.8   3.2
  7000  -3.5  25.7  250   6  3   3.3   1.8 |  -1.7  28.9  200   4  2   5.0   2.8
  6750  -3.2  26.2  240   6  3   5.2   2.9 |  -1.3  29.7  190   5  3   9.3   5.1
  6500  -2.8  27.0  225   5  3   5.5   3.0 |  -0.4  31.3  190   5  3  11.3   6.2
  6250  -2.5  27.5  215   4  2   3.7   2.0 |   0.2  32.4  185   5  3   8.7   4.7
  6000  -2.2  28.0  195   4  2   4.5   2.5 |   0.9  33.6  185   5  2   8.9   4.9
  5750  -1.8  28.8  180   4  2   7.1   3.9 |   1.6  34.9  180   4  2  12.7   7.0
  5500  -1.2  29.8  175   3  2  10.7   5.9 |   2.9  37.2  180   4  2  21.4  11.8

           11/25/2024 at 1400 MST          |       11/25/2024 at 1700 MST
                                           |
CAPE...     0.0    LI...       +4.1        | CAPE...     0.0    LI...       +4.3
CINH...     0.0    K Index... -21.1        | CINH...     0.0    K Index... -14.7
                                           |
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 -59.4 -74.9  270  60 31   1.5   0.8 | -59.9 -75.8  270  63 33   1.6   0.9
 45000 -57.0 -70.6  270  69 35   1.5   0.8 | -57.4 -71.3  270  74 38   1.6   0.9
 40000 -57.0 -70.6  280  96 50  -0.0  -0.0 | -57.5 -71.5  270  95 49  -0.1  -0.0
 38000 -56.3 -69.3  280 103 53   3.1   1.7 | -56.9 -70.4  275 103 53   2.5   1.3
 36000 -54.5 -66.1  280 101 52   3.0   1.7 | -55.5 -67.9  285 111 57   2.4   1.3
 34000 -52.7 -62.9  280  99 51   4.4   2.4 | -53.9 -65.0  290 120 62   5.5   3.0
 32000 -48.7 -55.7  285  95 49   5.8   3.2 | -49.1 -56.4  290 117 60   7.2   4.0
 30000 -45.2 -49.4  285  91 47   6.6   3.6 | -44.7 -48.5  290 112 57   7.4   4.0
 29000 -43.2 -45.8  285  87 45   6.5   3.6 | -42.5 -44.5  290 102 53   7.4   4.0
 28000 -41.3 -42.3  285  82 42   6.5   3.6 | -40.3 -40.5  290  93 48   7.4   4.0
 27000 -39.3 -38.7  285  77 40   6.5   3.6 | -38.1 -36.6  290  83 43   7.3   4.0
 26000 -37.2 -35.0  285  73 38   7.3   4.0 | -36.1 -33.0  285  77 40   6.6   3.6
 25000 -35.0 -31.0  285  69 36   7.3   4.0 | -34.1 -29.4  285  72 37   6.6   3.6
 24000 -32.8 -27.0  285  66 34   7.3   4.0 | -32.1 -25.8  285  66 34   6.6   3.6
 23000 -30.7 -23.3  285  62 32   6.7   3.7 | -30.0 -22.0  285  63 32   7.1   3.9
 22000 -28.7 -19.7  285  59 30   6.7   3.7 | -27.8 -18.0  285  60 31   7.1   3.9
 21000 -26.7 -16.1  285  56 29   6.2   3.4 | -25.7 -14.3  285  57 29   6.3   3.4
 20000 -25.3 -13.5  285  50 26   4.7   2.6 | -24.2 -11.6  285  53 27   4.9   2.7
 19500 -24.6 -12.3  285  47 24   4.7   2.6 | -23.4 -10.1  285  50 26   4.9   2.7
 19000 -23.9 -11.0  285  44 23   4.7   2.6 | -22.7  -8.9  285  48 25   5.0   2.7
 18500 -23.1  -9.6  285  42 21   4.8   2.6 | -22.0  -7.6  285  46 24   5.5   3.0
 18000 -22.4  -8.3  285  38 20   5.4   3.0 | -20.9  -5.6  285  45 23   7.6   4.2
 17500 -21.6  -6.9  285  35 18   5.4   3.0 | -19.8  -3.6  285  43 22   7.8   4.3
 17000 -20.8  -5.4  285  32 16   5.1   2.8 | -18.8  -1.8  285  41 21   4.4   2.4
 16500 -19.6  -3.3  285  27 14   4.9   2.7 | -17.9  -0.2  285  37 19   4.4   2.4
 16000 -18.8  -1.8  285  25 13   6.2   3.4 | -17.0   1.4  285  35 18   6.8   3.7
 15500 -17.9  -0.2  285  22 12   6.0   3.3 | -16.0   3.2  285  33 17   6.6   3.6
 15000 -16.9   1.6  285  21 11   7.5   4.1 | -15.1   4.8  285  32 16   5.9   3.2
 14500 -15.8   3.6  285  20 10   7.6   4.2 | -14.2   6.4  285  31 16   5.8   3.2
 14000 -14.6   5.7  285  20 10   7.8   4.3 | -13.3   8.1  285  29 15   6.2   3.4
 13500 -13.5   7.7  285  21 11   7.9   4.3 | -12.4   9.7  285  28 15   6.4   3.5
 13000 -12.3   9.9  285  21 11   7.7   4.2 | -11.4  11.5  280  27 14   6.3   3.5
 12500 -11.2  11.8  285  23 12   7.7   4.2 | -10.5  13.1  280  25 13   6.3   3.5
 12000 -10.0  14.0  285  24 12   7.0   3.9 |  -9.6  14.7  275  23 12   7.0   3.8
 11500  -9.1  15.6  285  23 12   6.8   3.7 |  -8.5  16.7  275  21 11   7.3   4.0
 11000  -8.1  17.4  285  22 11   6.9   3.8 |  -7.4  18.7  275  19 10   7.4   4.1
 10500  -7.1  19.2  285  18  9   7.3   4.0 |  -6.4  20.5  275  16  8   8.0   4.4
 10250  -6.6  20.1  280  17  9   5.1   2.8 |  -5.8  21.6  270  15  8   5.6   3.1
 10000  -6.4  20.5  280  16  8   3.9   2.1 |  -5.5  22.1  270  14  7   4.2   2.3
  9750  -6.0  21.2  280  14  7   7.4   4.1 |  -5.1  22.8  270  13  7   7.5   4.1
  9500  -5.3  22.5  275  12  6   9.5   5.2 |  -4.5  23.9  270  12  6   9.3   5.1
  9250  -4.7  23.5  270   9  5   6.9   3.8 |  -3.9  25.0  265  10  5   6.8   3.7
  9000  -4.3  24.3  265   7  4   4.4   2.4 |  -3.5  25.7  260   9  5   4.6   2.5
  8750  -3.9  25.0  255   6  3   6.2   3.4 |  -3.1  26.4  255   8  4   6.5   3.5
  8500  -3.5  25.7  230   4  2   7.2   3.9 |  -2.6  27.3  245   6  3   7.2   4.0
  8250  -3.0  26.6  200   4  2   7.3   4.0 |  -2.1  28.2  230   5  3   6.5   3.6
  8000  -2.4  27.7  185   4  2   7.2   4.0 |  -1.7  28.9  215   5  2   5.8   3.2
  7750  -1.9  28.6  170   4  2   8.4   4.6 |  -1.3  29.7  195   5  2   8.2   4.5
  7500  -1.2  29.8  170   4  2  10.0   5.5 |  -0.6  30.9  180   5  3  10.3   5.6
  7250  -0.5  31.1  170   4  2  10.1   5.6 |   0.1  32.2  170   5  3   9.5   5.2
  7000   0.3  32.5  165   4  2  10.2   5.6 |   0.8  33.4  165   6  3  10.1   5.5
  6750   1.0  33.8  165   4  2  10.2   5.6 |   1.6  34.9  160   7  3   8.5   4.7
  6500   1.8  35.2  165   4  2  10.1   5.6 |   2.1  35.8  160   7  4   8.4   4.6
  6250   2.5  36.5  165   4  2  10.4   5.7 |   2.8  37.0  155   7  4   9.4   5.2
  6000   3.3  37.9  165   4  2   9.6   5.3 |   3.5  38.3  155   7  4   9.9   5.4
  5750   4.1  39.4  165   4  2  12.3   6.7 |   4.2  39.6  150   7  4   7.2   4.0
  5500   5.2  41.4  165   4  2  19.1  10.5 |   4.4  39.9  150   5  3   0.1   0.1
________________________________________________________________________________

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.

CINH (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