Soaring Guidance
Issued by NWS Denver/Boulder, CO

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000
UXUS97 KBOU 270112
SRGBOU

Soaring Forecast
National Weather Service Denver/Boulder, Colorado
1912 MDT Sunday, October 26, 2014

This forecast is for Monday, October 27, 2014:

If the trigger temperature of 56.3 F/13.5 C is reached...then
   Thermal Soaring Index....................... Poor
   Maximum rate of lift........................ 0 ft/min (0.0 m/s)
   Maximum height of thermals.................. 8032 ft MSL (2745 ft AGL)

Forecast maximum temperature................... 54.0 F/12.7 C
Time of trigger temperature.................... None
Time of overdevelopment........................ None
Middle/high clouds during soaring window....... Broken/overcast thin middle
Surface winds during soaring window............ 20 mph or less
Height of the -3 thermal index................. 5753 ft MSL (465 ft AGL)
Thermal soaring outlook for Tuesday 10/28...... Good

Wave Soaring Index............................. Poor
Wave Soaring Index trend (to 1800 MDT)......... No change
Height of stable layer (12-18K ft MSL)......... None
Weak PVA/NVA (through 1800 MDT)................ Neither
Potential height of wave....................... 39567 ft MSL (34280 ft AGL)
Wave soaring outlook for Tuesday 10/28......... Poor

Remarks... Upper level trough will pass over colorado late tonight through
           Monday morning. Cold front passes through northeast colorado by
           Monday morning.

Sunrise/Sunset.................... 07:22:44 / 18:04:53 MDT
Total possible sunshine........... 10 hr 42 min 9 sec (642 min 9 sec)
Altitude of sun at 12:43:26 MDT... 37.32 degrees

Upper air data from numerical model forecast valid on 10/27/2014 at 0600 MDT

Freezing level.................. 10067 ft MSL (4780 ft AGL)
Convective condensation level... 11100 ft MSL (5813 ft AGL)
Lifted condensation level....... 9797 ft MSL (4510 ft AGL)
Lifted index.................... +4.2
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  -58.2 -72.8   255   40   20   0.7   0.4      M     M       M      M    M
 45000  -57.1 -70.8   255   65   33   0.5   0.3      M     M       M      M    M
 40000  -56.6 -69.9   260   70   36   0.4   0.2      M     M       M      M    M
 38000  -56.0 -68.8   255   71   37   1.4   0.8      M     M       M      M    M
 36000  -55.2 -67.4   255   72   37   1.4   0.8      M     M       M      M    M
 34000  -53.1 -63.6   255   72   37   8.1   4.5      M     M       M      M    M
 32000  -48.1 -54.6   255   70   36   8.3   4.6      M     M       M      M    M
 30000  -43.0 -45.4   255   69   35   8.5   4.6   32.4  90.4    15.2      M    M
 29000  -40.5 -40.9   255   67   34   8.4   4.6   31.8  89.3    14.9      M    M
 28000  -38.0 -36.4   255   65   33   8.5   4.6   31.4  88.4    14.8      M    M
 27000  -35.4 -31.7   255   63   32   8.5   4.7   31.0  87.8    14.7      M    M
 26000  -32.8 -27.0   250   61   31   8.6   4.7   30.4  86.8    14.4      M    M
 25000  -30.3 -22.5   250   59   30   8.6   4.7   30.0  86.0    14.2      M    M
 24000  -27.7 -17.9   250   57   29   8.5   4.7   29.7  85.4    14.1      M    M
 23000  -25.2 -13.4   255   56   29   8.3   4.5   29.1  84.3    13.8      M    M
 22000  -22.7  -8.9   255   56   29   8.3   4.5   28.5  83.3    13.5      M    M
 21000  -20.2  -4.4   255   55   28   8.4   4.6   28.1  82.5    13.3      M    M
 20000  -17.7   0.1   255   54   28   8.5   4.7   27.6  81.6    13.0      M    M
 19500  -16.4   2.5   260   54   28   8.5   4.7   27.3  81.2    12.9      M    M
 19000  -15.1   4.8   260   54   28   8.4   4.6   27.1  80.9    12.8      M    M
 18500  -13.8   7.2   260   53   27   7.4   4.1   27.0  80.6    12.7      M    M
 18000  -13.0   8.6   265   53   27   5.2   2.9   26.3  79.3    12.2      M    M
 17500  -12.2  10.0   265   53   27   5.3   2.9   25.5  77.9    11.6      M    M
 17000  -11.1  12.0   265   51   26   4.6   2.5   24.2  75.6    10.5      M    M
 16500  -10.4  13.3   265   50   26   4.6   2.5   23.4  74.1     9.8      M    M
 16000   -9.7  14.5   265   48   25   5.1   2.8   22.5  72.6     9.1      M    M
 15500   -9.0  15.8   265   46   23   5.1   2.8   21.7  71.1     8.4      M    M
 15000   -8.3  17.1   265   43   22   5.8   3.2   21.0  69.8     7.7      M    M
 14500   -7.4  18.7   265   41   21   6.1   3.3   20.4  68.7     7.1      M    M
 14000   -6.6  20.1   265   39   20   6.0   3.3   19.8  67.6     6.6      M    M
 13500   -5.7  21.7   265   36   18   5.9   3.2   19.1  66.4     6.0      M    M
 13000   -4.9  23.2   265   33   17   5.9   3.2   18.5  65.3     5.3      M    M
 12500   -4.1  24.6   265   29   15   5.8   3.2   17.9  64.2     4.7      M    M
 12000   -3.3  26.1   265   26   13   5.9   3.2   17.2  63.0     4.1      M    M
 11500   -2.4  27.7   265   23   12   5.9   3.2   16.6  61.9     3.5      M    M
 11000   -1.6  29.1   265   20   11   5.8   3.2   16.0  60.8     2.9      M    M
 10500   -0.8  30.6   260   18    9   5.5   3.0   15.4  59.6     2.3      M    M
 10250   -0.4  31.3   260   17    9   6.9   3.8   15.1  59.1     2.0      M    M
 10000    0.2  32.4   260   15    8   8.4   4.6   14.9  58.9     1.8      M    M
  9750    0.8  33.4   260   14    7   7.3   4.0   14.8  58.6     1.7      M    M
  9500    1.3  34.3   260   14    7   6.7   3.7   14.5  58.2     1.4      M    M
  9250    1.8  35.2   265   13    7   7.1   3.9   14.3  57.8     1.2      M    M
  9000    2.3  36.1   270   12    6   7.5   4.1   14.1  57.4     1.0      M    M
  8750    2.9  37.2   275   11    6   6.4   3.5   13.9  57.1     0.8      M    M
  8500    3.3  37.9   280   10    5   5.4   3.0   13.6  56.5     0.5      M    M
  8250    3.7  38.7   285    9    5   6.2   3.4   13.3  55.9     0.2      M    M
  8000    4.2  39.6   295    8    4   7.0   3.8   13.1  55.5    -0.0    165  0.8
  7750    4.7  40.5   310    7    4   5.9   3.2   12.8  55.1    -0.3    143  0.7
  7500    5.0  41.0   320    7    4   4.7   2.6   12.5  54.4    -0.6    124  0.6
  7250    5.4  41.7   335    7    4   5.5   3.0   12.1  53.8    -1.0    106  0.5
  7000    5.8  42.4   350    8    4   6.0   3.3   11.8  53.3    -1.3     85  0.4
  6750    6.3  43.3   360    8    4   6.6   3.6   11.5  52.8    -1.6     64  0.3
  6500    6.8  44.2   005    9    4   6.7   3.7   11.3  52.4    -1.8     42  0.2
  6250    7.2  45.0   010    8    4   5.3   2.9   11.0  51.9    -2.1     22  0.1
  6000    7.5  45.5   015    5    3   4.3   2.3   10.6  51.2    -2.6      5  0.0
  5750    7.9  46.2   015    2    1   6.5   3.6   10.3  50.5    -3.0      M    M
  5500    8.3  46.9   205    2    1   2.8   1.5   10.0  50.0    -3.3      M    M

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

           10/27/2014 at 0900 MDT          |       10/27/2014 at 1200 MDT
                                           |
K index... -5.0  LI... +4.6                | K index... -6.6  LI... +4.2
CAPE... +16.3  CIN... -1.2                 | CAPE... +17.4  CIN... -5.7
                                           |
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 -57.8 -72.0  260  41 21   1.0   0.6 | -57.4 -71.3  265  37 19   0.5   0.3
 45000 -56.2 -69.2  265  57 29   0.6   0.3 | -56.7 -70.1  265  56 29   0.7   0.4
 40000 -56.0 -68.8  255  68 35   0.1   0.1 | -55.1 -67.2  260  68 35   1.0   0.6
 38000 -55.7 -68.3  255  72 37   1.3   0.7 | -54.4 -65.9  255  72 37   1.1   0.6
 36000 -54.9 -66.8  255  75 39   1.3   0.7 | -53.8 -64.8  255  76 39   1.1   0.6
 34000 -53.2 -63.8  250  77 40   7.3   4.0 | -52.5 -62.5  250  79 41   5.9   3.2
 32000 -48.8 -55.8  250  73 38   7.3   4.0 | -49.1 -56.4  250  81 42   5.6   3.1
 30000 -44.2 -47.6  250  69 35   8.6   4.7 | -45.3 -49.5  250  81 41   9.2   5.1
 29000 -41.6 -42.9  255  67 35   8.6   4.7 | -42.5 -44.5  250  77 40   9.2   5.1
 28000 -39.0 -38.2  255  66 34   8.6   4.7 | -39.7 -39.5  250  73 38   9.2   5.1
 27000 -36.5 -33.7  255  65 33   8.3   4.6 | -37.0 -34.6  250  69 36   9.0   4.9
 26000 -34.1 -29.4  260  62 32   8.0   4.4 | -34.4 -29.9  255  67 34   8.6   4.7
 25000 -31.7 -25.1  260  60 31   8.0   4.4 | -31.8 -25.2  255  65 33   8.6   4.7
 24000 -29.3 -20.7  260  57 29   8.3   4.5 | -29.2 -20.6  260  63 32   8.6   4.7
 23000 -26.5 -15.7  255  53 27   9.2   5.1 | -26.9 -16.4  260  61 31   7.5   4.1
 22000 -23.8 -10.8  255  49 25   9.2   5.1 | -24.6 -12.3  260  60 31   7.6   4.1
 21000 -21.0  -5.8  250  45 23   8.6   4.7 | -22.3  -8.1  265  58 30   7.3   4.0
 20000 -18.5  -1.3  255  46 23   8.2   4.5 | -20.2  -4.4  265  56 29   7.1   3.9
 19500 -17.3   0.9  255  46 24   8.2   4.5 | -19.1  -2.4  265  55 28   7.1   3.9
 19000 -16.1   3.0  260  46 24   8.1   4.5 | -18.0  -0.4  265  54 28   7.1   3.9
 18500 -14.8   5.4  260  46 24   7.7   4.2 | -16.9   1.6  265  53 27   7.2   4.0
 18000 -13.8   7.2  265  49 25   6.6   3.6 | -15.8   3.6  265  52 27   7.7   4.2
 17500 -12.8   9.0  265  52 27   6.7   3.7 | -14.7   5.5  265  51 26   7.7   4.2
 17000 -11.9  10.6  270  53 27   5.8   3.2 | -13.5   7.7  265  49 25   7.5   4.1
 16500 -10.6  12.9  270  50 26   6.0   3.3 | -11.8  10.8  260  46 24   7.9   4.3
 16000  -9.8  14.4  270  48 25   3.8   2.1 | -11.0  12.2  260  44 23   3.6   2.0
 15500  -9.2  15.4  270  47 24   4.0   2.2 | -10.4  13.3  265  43 22   3.9   2.1
 15000  -8.7  16.3  270  45 23   3.5   1.9 |  -9.9  14.2  265  42 22   1.9   1.0
 14500  -8.2  17.2  270  42 22   3.4   1.9 |  -9.8  14.4  265  40 21   1.3   0.7
 14000  -7.7  18.1  270  40 20   3.6   2.0 |  -9.6  14.7  265  39 20   1.5   0.8
 13500  -7.2  19.0  270  37 19   3.7   2.0 |  -9.5  14.9  265  34 18   1.9   1.1
 13000  -6.7  19.9  270  35 18   3.8   2.1 |  -9.3  15.3  265  29 15   3.6   2.0
 12500  -6.2  20.8  270  32 16   4.0   2.2 |  -8.4  16.9  265  24 12   6.6   3.6
 12000  -5.6  21.9  270  28 14   4.9   2.7 |  -7.5  18.5  265  19 10   6.9   3.8
 11500  -4.7  23.5  265  25 13   6.9   3.8 |  -6.4  20.5  260  16  8   7.7   4.2
 11000  -3.8  25.2  265  22 11   6.6   3.6 |  -5.3  22.5  260  15  8   7.6   4.2
 10500  -2.9  26.8  260  18  9   5.6   3.1 |  -4.2  24.4  260  12  6   7.1   3.9
 10250  -2.5  27.5  260  17  9   8.0   4.4 |  -3.6  25.5  260  11  6   9.4   5.2
 10000  -1.8  28.8  255  15  8  10.6   5.8 |  -2.8  27.0  265  10  5  10.2   5.6
  9750  -1.1  30.0  255  14  7   9.1   5.0 |  -2.2  28.0  265  10  5   8.2   4.5
  9500  -0.5  31.1  255  13  7   8.5   4.7 |  -1.6  29.1  270   9  5   8.6   4.7
  9250   0.2  32.4  250  13  6   8.6   4.7 |  -1.0  30.2  270   8  4   8.3   4.6
  9000   0.7  33.3  250  12  6   6.6   3.6 |  -0.5  31.1  275   7  4   6.4   3.5
  8750   1.1  34.0  250  11  5   5.8   3.2 |  -0.1  31.8  280   6  3   5.5   3.0
  8500   1.6  34.9  250   9  5   6.5   3.6 |   0.4  32.7  300   5  3   5.6   3.1
  8250   2.0  35.6  250   8  4   6.3   3.5 |   0.8  33.4  320   4  2   6.7   3.7
  8000   2.5  36.5  260   7  3   6.0   3.3 |   1.4  34.5  340   5  2   8.9   4.9
  7750   2.9  37.2  270   5  3   4.6   2.5 |   2.1  35.8  350   5  3   9.5   5.2
  7500   3.2  37.8  295   4  2   3.8   2.1 |   2.8  37.0  355   6  3   9.5   5.2
  7250   3.6  38.5  320   4  2   4.5   2.4 |   3.6  38.5  355   6  3  10.1   5.6
  7000   4.0  39.2  355   5  3   5.0   2.7 |   4.4  39.9  355   6  3  10.8   5.9
  6750   4.4  39.9  010   7  4   4.4   2.4 |   5.1  41.2  360   6  3   9.6   5.3
  6500   4.7  40.5  020  10  5   5.5   3.0 |   5.8  42.4  355   6  3   9.5   5.2
  6250   5.2  41.4  025  10  5   8.3   4.5 |   6.6  43.9  360   6  3  10.7   5.8
  6000   5.8  42.4  030   9  5   8.8   4.8 |   7.4  45.3  360   6  3  10.4   5.7
  5750   6.4  43.5  035   8  4   9.3   5.1 |   8.2  46.8  360   6  3  11.2   6.2
  5500   7.2  45.0  040   6  3  12.3   6.7 |   9.2  48.6  360   6  3  17.9   9.8

           10/27/2014 at 1500 MDT          |       10/27/2014 at 1800 MDT
                                           |
K index... +14.9  LI... +3.9               | K index... +11.5  LI... +3.3
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 -57.6 -71.7  280  32 16   2.0   1.1 | -58.8 -73.8  295  34 17   3.1   1.7
 45000 -54.6 -66.3  275  49 25   1.6   0.9 | -54.2 -65.6  285  47 24   2.5   1.4
 40000 -53.0 -63.4  275  62 32   1.0   0.6 | -51.7 -61.1  295  65 33   1.6   0.9
 38000 -52.6 -62.7  270  65 34   0.0   0.0 | -51.0 -59.8  300  70 36   0.6   0.3
 36000 -52.6 -62.7  265  65 33   0.0   0.0 | -50.7 -59.3  300  72 37   0.6   0.3
 34000 -52.0 -61.6  260  66 34   7.0   3.8 | -50.0 -58.0  295  75 38   5.2   2.9
 32000 -48.2 -54.8  260  69 35   6.3   3.5 | -46.8 -52.2  300  75 39   5.5   3.0
 30000 -44.4 -47.9  260  71 37   7.0   3.8 | -43.4 -46.1  300  76 39   5.9   3.2
 29000 -42.3 -44.1  260  71 36   7.0   3.8 | -41.7 -43.1  295  73 38   5.9   3.2
 28000 -40.2 -40.4  260  71 36   7.0   3.8 | -39.9 -39.8  295  71 37   5.9   3.2
 27000 -38.1 -36.6  260  70 36   7.0   3.8 | -37.7 -35.9  290  68 35   5.8   3.2
 26000 -36.0 -32.8  265  70 36   7.2   4.0 | -36.0 -32.8  290  65 33   5.6   3.1
 25000 -33.8 -28.8  265  69 35   7.2   4.0 | -34.4 -29.9  290  61 31   5.6   3.1
 24000 -31.6 -24.9  265  68 35   7.1   3.9 | -32.7 -26.9  285  57 29   5.6   3.1
 23000 -29.2 -20.6  270  67 35   8.4   4.6 | -30.8 -23.4  285  53 27   6.5   3.6
 22000 -26.7 -16.1  270  66 34   8.4   4.6 | -28.8 -19.8  285  50 26   6.5   3.6
 21000 -24.1 -11.4  270  65 33   8.0   4.4 | -26.9 -16.4  285  46 24   7.5   4.1
 20000 -21.9  -7.4  270  63 32   7.2   4.0 | -24.3 -11.7  280  44 23   8.6   4.7
 19500 -20.9  -5.6  270  62 32   7.2   4.0 | -23.0  -9.4  280  43 22   8.6   4.7
 19000 -19.8  -3.6  270  60 31   7.2   4.0 | -21.8  -7.2  280  42 22   8.5   4.7
 18500 -18.7  -1.7  270  59 31   7.1   3.9 | -20.5  -4.9  280  41 21   7.7   4.2
 18000 -17.8  -0.0  265  56 29   5.4   2.9 | -19.6  -3.3  275  40 20   5.3   2.9
 17500 -17.0   1.4  265  53 27   5.6   3.1 | -18.8  -1.8  275  39 20   5.5   3.0
 17000 -16.1   3.0  260  48 25   2.0   1.1 | -18.1  -0.6  270  38 19   4.0   2.2
 16500 -15.8   3.6  260  46 24   2.0   1.1 | -17.5   0.5  270  37 19   4.1   2.2
 16000 -15.3   4.5  255  43 22   4.9   2.7 | -16.9   1.6  265  36 19   5.6   3.1
 15500 -14.7   5.5  255  38 20   4.9   2.7 | -16.0   3.2  265  35 18   6.6   3.6
 15000 -13.9   7.0  255  34 17   7.5   4.1 | -15.0   5.0  265  33 17   7.0   3.9
 14500 -12.7   9.1  255  30 15   8.3   4.5 | -13.9   7.0  265  31 16   7.9   4.3
 14000 -11.4  11.5  255  26 13   7.8   4.3 | -12.1  10.2  265  27 14   8.1   4.4
 13500 -10.4  13.3  260  23 12   7.4   4.1 | -10.9  12.4  265  25 13   8.2   4.5
 13000  -9.3  15.3  265  21 11   7.4   4.1 |  -9.7  14.5  270  23 12   8.1   4.4
 12500  -8.2  17.2  270  19 10   7.5   4.1 |  -8.6  16.5  270  21 11   8.0   4.4
 12000  -7.1  19.2  275  17  9   7.5   4.1 |  -7.4  18.7  275  20 10   8.5   4.7
 11500  -6.0  21.2  280  15  8   7.4   4.1 |  -6.1  21.0  280  20 10   8.9   4.9
 11000  -4.9  23.2  290  14  7   7.0   3.8 |  -4.8  23.4  290  21 11   8.5   4.7
 10500  -3.9  25.0  300  12  6   5.9   3.2 |  -3.6  25.5  295  21 11   9.2   5.0
 10250  -3.5  25.7  305  11  6   8.3   4.5 |  -3.0  26.6  295  21 11   4.2   2.3
 10000  -2.7  27.1  320  11  6   9.6   5.3 |  -2.8  27.0  295  21 11   5.6   3.1
  9750  -2.1  28.2  320  11  6   8.2   4.5 |  -2.0  28.4  300  21 11  11.4   6.3
  9500  -1.5  29.3  325  11  6   8.6   4.7 |  -1.2  29.8  305  21 11  10.2   5.6
  9250  -0.9  30.4  330  11  6   8.3   4.6 |  -0.5  31.1  305  21 11   9.4   5.1
  9000  -0.2  31.6  330  11  6   9.2   5.0 |   0.1  32.2  310  21 11   8.0   4.4
  8750   0.5  32.9  330  11  6  10.3   5.6 |   0.8  33.4  315  21 11   8.9   4.9
  8500   1.3  34.3  330  11  6  10.3   5.7 |   1.5  34.7  315  21 11   9.0   4.9
  8250   2.1  35.8  335  11  6  10.4   5.7 |   2.1  35.8  320  21 11   9.3   5.1
  8000   2.8  37.0  335  11  6  10.3   5.6 |   2.8  37.0  320  21 11   9.6   5.3
  7750   3.6  38.5  335  11  6   9.8   5.4 |   3.6  38.5  325  21 11   9.4   5.1
  7500   4.3  39.7  335  11  6   9.5   5.2 |   4.3  39.7  325  21 11   9.4   5.1
  7250   5.0  41.0  335  11  6   9.9   5.4 |   5.0  41.0  325  21 11   9.5   5.2
  7000   5.8  42.4  335  11  6  10.1   5.5 |   5.7  42.3  330  21 11   9.7   5.3
  6750   6.5  43.7  335  11  6   9.5   5.2 |   6.4  43.5  330  20 10   9.1   5.0
  6500   7.2  45.0  335  11  6   9.9   5.4 |   7.0  44.6  330  20 10   9.2   5.0
  6250   8.0  46.4  335  11  5  11.0   6.1 |   7.8  46.0  330  19 10   9.6   5.3
  6000   8.9  48.0  335  10  5  10.8   5.9 |   8.5  47.3  335  18  9   9.8   5.4
  5750   9.7  49.5  335  10  5  11.3   6.2 |   9.2  48.6  335  17  9   8.7   4.8
  5500  10.7  51.3  335  10  5  16.5   9.0 |   9.7  49.5  335  15  8   5.5   3.0
________________________________________________________________________________

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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