Soaring Guidance
Issued by NWS Denver/Boulder, CO

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000
UXUS97 KBOU 030132
SRGBOU

Soaring Forecast
National Weather Service Denver/Boulder, Colorado
1832 MST Monday, March 2, 2015

This forecast is for Tuesday, March 3, 2015:

If the trigger temperature of 48.2 F/9.0 C is reached...then
   Thermal Soaring Index....................... Poor
   Maximum rate of lift........................ 0 ft/min (0.0 m/s)
   Maximum height of thermals.................. 5307 ft MSL (0 ft AGL)

Forecast maximum temperature................... 25.0 F/-4.3 C
Time of trigger temperature.................... None
Time of overdevelopment........................ None
Middle/high clouds during soaring window....... Broken/overcast opaque middle
Surface winds during soaring window............ 20 mph or less
Height of the -3 thermal index................. None
Thermal soaring outlook for Wednesday 03/04.... Poor

Wave Soaring Index............................. Good
Wave Soaring Index trend (to 1700 MST)......... Becoming poor by 1200 MDT as flo
Height of stable layer (12-18K ft MSL)......... None
Weak PVA/NVA (through 1700 MST)................ Weak PVA
Potential height of wave....................... 14394 ft MSL (9087 ft AGL)
Wave soaring outlook for Wednesday 03/04....... Fair

Remarks...

Sunrise/Sunset.................... 06:29:46 / 17:52:22 MST
Total possible sunshine........... 11 hr 22 min 35 sec (682 min 35 sec)
Altitude of sun at 12:11:18 MST... 43.53 degrees

Upper air data from numerical model forecast valid on 03/03/2015 at 0500 MST

Freezing level.................. 7354 ft MSL (2047 ft AGL)
Convective condensation level... 15584 ft MSL (10277 ft AGL)
Lifted condensation level....... 8748 ft MSL (3441 ft AGL)
Lifted index.................... +20.6
K index......................... -14.4

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  -58.4 -73.1   240   70   36   1.6   0.9      M     M       M      M    M
 45000  -56.0 -68.8   240   92   47   1.5   0.8      M     M       M      M    M
 40000  -54.0 -65.2   240  104   54   1.3   0.7      M     M       M      M    M
 38000  -52.9 -63.2   240  112   58   2.5   1.4      M     M       M      M    M
 36000  -51.4 -60.5   240  127   65   2.5   1.4      M     M       M      M    M
 34000  -49.9 -57.8   235  142   73   2.7   1.5      M     M       M      M    M
 32000  -45.4 -49.7   235  139   72   8.1   4.5      M     M       M      M    M
 30000  -40.5 -40.9   240  135   69   8.6   4.7      M     M       M      M    M
 29000  -38.5 -37.3   240  123   63   4.7   2.6   35.9  96.5    30.2      M    M
 28000  -37.1 -34.8   240  113   58   4.7   2.6   33.9  92.9    29.0      M    M
 27000  -35.6 -32.1   245  102   53   4.7   2.6   32.0  89.6    27.9      M    M
 26000  -34.1 -29.4   245   94   48   5.4   3.0   30.2  86.4    26.9      M    M
 25000  -32.5 -26.5   245   88   45   5.4   3.0   28.5  83.3    25.9      M    M
 24000  -30.9 -23.6   245   83   43   5.4   3.0   27.0  80.5    24.9      M    M
 23000  -29.3 -20.7   250   79   41   5.6   3.1   25.4  77.8    24.0      M    M
 22000  -27.6 -17.7   250   80   41   5.6   3.1   23.9  74.9    22.9      M    M
 21000  -25.9 -14.6   250   80   41   5.6   3.1   22.4  72.3    22.0      M    M
 20000  -24.4 -11.9   250   74   38   4.1   2.3   20.7  69.2    20.8      M    M
 19500  -23.8 -10.8   255   66   34   4.1   2.3   19.7  67.4    20.0      M    M
 19000  -23.2  -9.8   255   59   30   4.1   2.3   18.7  65.6    19.3      M    M
 18500  -22.6  -8.7   255   52   27   4.1   2.3   17.7  63.9    18.6      M    M
 18000  -22.0  -7.6   260   45   23   4.2   2.3   16.8  62.3    17.9      M    M
 17500  -21.3  -6.3   260   36   19   4.5   2.5   15.9  60.6    17.2      M    M
 17000  -20.6  -5.1   270   28   15   4.2   2.3   15.0  59.0    16.5      M    M
 16500  -19.8  -3.6   275   23   12   7.9   4.4   14.3  57.8    16.0      M    M
 16000  -18.6  -1.5   285   23   12   8.0   4.4   14.0  57.2    15.9      M    M
 15500  -17.4   0.7   290   23   12   7.9   4.4   13.7  56.7    15.7      M    M
 15000  -15.6   3.9   295   26   13   7.9   4.3   13.3  55.9    15.4      M    M
 14500  -14.4   6.1   300   28   14   8.1   4.4   13.0  55.4    15.2      M    M
 14000  -13.2   8.2   300   31   16   8.1   4.4   12.7  54.8    15.0      M    M
 13500  -12.0  10.4   300   33   17   8.3   4.6   12.4  54.4    14.9      M    M
 13000  -10.8  12.6   300   36   18   8.4   4.6   12.2  54.0    14.7      M    M
 12500   -9.5  14.9   300   39   20   7.8   4.3   12.0  53.6    14.6      M    M
 12000   -8.4  16.9   300   42   22   7.5   4.1   11.6  52.9    14.3      M    M
 11500   -7.3  18.9   300   45   23   7.4   4.0   11.2  52.2    14.0      M    M
 11000   -6.3  20.7   300   47   24   7.3   4.0   10.8  51.5    13.7      M    M
 10500   -5.2  22.6   300   49   25   7.5   4.1   10.5  50.8    13.4      M    M
 10250   -4.6  23.7   300   50   26   7.8   4.3   10.3  50.5    13.3      M    M
 10000   -4.1  24.6   300   51   26   6.7   3.7   10.1  50.2    13.1      M    M
  9750   -3.6  25.5   300   52   27   5.7   3.1    9.8  49.7    12.9      M    M
  9500   -3.2  26.2   300   53   27   5.3   2.9    9.5  49.1    12.6      M    M
  9250   -2.9  26.8   295   54   28   5.0   2.8    9.1  48.4    12.2      M    M
  9000   -2.5  27.5   295   55   28   4.8   2.6    8.8  47.8    11.9      M    M
  8750   -2.2  28.0   290   56   29   4.9   2.7    8.4  47.1    11.6      M    M
  8500   -1.8  28.8   290   56   29   5.5   3.0    8.0  46.4    11.2      M    M
  8250   -1.4  29.5   290   55   28   6.3   3.5    7.7  45.9    10.9      M    M
  8000   -1.0  30.2   285   54   28   3.9   2.1    7.4  45.3    10.7      M    M
  7750   -0.7  30.7   285   53   27   4.1   2.3    6.9  44.4    10.2      M    M
  7500   -0.3  31.5   280   50   26   6.8   3.7    6.6  43.9     9.9      M    M
  7250    0.2  32.4   280   48   25   5.8   3.2    6.3  43.4     9.7      M    M
  7000    0.6  33.1   275   45   23   7.0   3.8    6.0  42.9     9.4      M    M
  6750    1.2  34.2   275   43   22   8.0   4.4    5.9  42.6     9.3      M    M
  6500    1.8  35.2   275   41   21   7.6   4.2    5.7  42.3     9.2      M    M
  6250    2.3  36.1   275   38   20   8.2   4.5    5.6  42.1     9.0      M    M
  6000    2.8  37.0   270   35   18   2.1   1.2    5.3  41.6     8.8      M    M
  5750    2.5  36.5   270   29   15  -6.9  -3.8    4.4  39.9     7.8      M    M
  5500    1.9  35.4   265   22   11  -7.3  -4.0    3.1  37.5     6.5      M    M

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

           03/03/2015 at 0800 MST          |       03/03/2015 at 1100 MST
                                           |
K index... -4.3  LI... +279.5              | K index... +0.8  LI... +280.6
CAPE... 0.0  CIN... -0.3                   | CAPE... 0.0  CIN... -0.5
                                           |
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 -57.5 -71.5  245  75 39   1.4   0.8 | -57.0 -70.6  245  71 36   1.5   0.8
 45000 -55.3 -67.5  245  95 49   1.4   0.8 | -54.7 -66.5  245  97 50   1.5   0.8
 40000 -53.2 -63.8  245 105 54   1.4   0.8 | -52.7 -62.9  245 103 53   1.3   0.7
 38000 -52.3 -62.1  240 109 56   2.4   1.3 | -51.9 -61.4  240 104 54   2.1   1.2
 36000 -50.7 -59.3  240 112 58   2.3   1.3 | -50.6 -59.1  240 105 54   2.1   1.1
 34000 -49.3 -56.7  235 115 59   2.2   1.2 | -49.2 -56.6  235 107 55   1.8   1.0
 32000 -46.4 -51.5  240 112 58   5.1   2.8 | -46.6 -51.9  235 106 55   4.7   2.6
 30000 -43.3 -45.9  240 108 56   5.1   2.8 | -43.7 -46.7  235 105 54   4.6   2.5
 29000 -41.6 -42.9  240 104 54   5.6   3.1 | -42.1 -43.8  235 102 53   5.5   3.0
 28000 -39.9 -39.8  240 100 51   5.6   3.1 | -40.5 -40.9  240  99 51   5.5   3.0
 27000 -38.2 -36.8  245  95 49   5.6   3.1 | -38.8 -37.8  240  96 49   5.5   3.0
 26000 -36.6 -33.9  245  91 47   5.6   3.1 | -37.2 -35.0  240  92 47   5.5   3.0
 25000 -34.9 -30.8  245  87 45   5.6   3.1 | -35.5 -31.9  240  88 45   5.5   3.0
 24000 -33.2 -27.8  245  84 43   5.6   3.1 | -33.9 -29.0  240  84 43   5.5   3.0
 23000 -31.5 -24.7  245  80 41   5.4   3.0 | -32.2 -26.0  240  80 41   6.5   3.6
 22000 -29.9 -21.8  245  75 38   5.4   3.0 | -30.2 -22.4  240  78 40   6.7   3.7
 21000 -28.3 -18.9  245  70 36   5.5   3.0 | -28.2 -18.8  235  75 38   6.7   3.7
 20000 -26.6 -15.9  245  64 33   6.2   3.4 | -26.2 -15.2  240  71 37   6.5   3.6
 19500 -25.6 -14.1  250  60 31   6.2   3.4 | -25.2 -13.4  240  68 35   6.5   3.6
 19000 -24.7 -12.5  250  56 29   6.2   3.4 | -24.2 -11.6  245  66 34   6.5   3.6
 18500 -23.3  -9.9  255  50 26   6.2   3.4 | -23.3  -9.9  245  64 33   6.5   3.6
 18000 -22.4  -8.3  255  47 24   4.8   2.6 | -21.9  -7.4  255  61 31   3.8   2.1
 17500 -21.8  -7.2  260  43 22   4.2   2.3 | -21.5  -6.7  255  59 30   2.4   1.3
 17000 -21.2  -6.2  260  39 20   4.4   2.4 | -21.2  -6.2  260  57 29   2.2   1.2
 16500 -20.4  -4.7  265  38 20   5.8   3.2 | -20.9  -5.6  265  55 28   1.7   0.9
 16000 -19.5  -3.1  265  38 19   5.8   3.2 | -20.6  -5.1  270  53 27   1.3   0.7
 15500 -18.7  -1.7  270  38 19   5.3   2.9 | -20.1  -4.2  270  51 26   5.8   3.2
 15000 -17.9  -0.2  275  38 20   5.3   2.9 | -19.3  -2.7  270  49 25   5.6   3.1
 14500 -17.1   1.2  275  38 20   6.0   3.3 | -18.4  -1.1  275  47 24   7.3   4.0
 14000 -16.2   2.8  280  37 19   6.1   3.4 | -17.3   0.9  275  43 22   7.7   4.2
 13500 -15.3   4.5  280  36 19   5.8   3.2 | -16.1   3.0  275  39 20   7.5   4.1
 13000 -14.5   5.9  285  37 19   5.7   3.1 | -15.0   5.0  275  36 18   7.4   4.1
 12500 -13.7   7.3  285  37 19   6.2   3.4 | -13.9   7.0  275  32 17   7.1   3.9
 12000 -12.7   9.1  290  36 19   6.5   3.6 | -12.9   8.8  275  30 15   6.9   3.8
 11500 -11.8  10.8  290  35 18   6.4   3.5 | -12.0  10.4  275  27 14   3.8   2.1
 11000 -10.8  12.6  295  33 17   6.4   3.5 | -11.7  10.9  270  23 12   1.9   1.1
 10500  -9.9  14.2  295  30 15   5.5   3.0 | -11.6  11.1  265  19 10  -1.3  -0.7
 10250  -9.5  14.9  295  28 14   4.9   2.7 | -11.8  10.8  265  16  8  -2.7  -1.5
 10000  -9.2  15.4  295  25 13   5.6   3.1 | -12.0  10.4  260  14  7  -3.4  -1.8
  9750  -8.7  16.3  295  23 12   5.9   3.3 | -12.3   9.9  260  11  5  -3.5  -1.9
  9500  -8.3  17.1  300  20 10   4.6   2.5 | -12.4   9.7  260   7  4   0.8   0.4
  9250  -8.1  17.4  310  16  8   3.8   2.1 | -12.2  10.0  270   4  2   3.2   1.7
  9000  -7.8  18.0  320  13  7   4.5   2.4 | -12.0  10.4  310   2  1   1.9   1.0
  8750  -7.5  18.5  330  11  6   2.7   1.5 | -11.9  10.6  045   3  1   3.1   1.7
  8500  -7.4  18.7  350  11  5   0.9   0.5 | -11.6  11.1  070   4  2   5.1   2.8
  8250  -7.3  18.9  010  12  6   1.4   0.7 | -11.2  11.8  075   5  3   4.9   2.7
  8000  -7.2  19.0  025  14  7   0.9   0.5 | -10.8  12.6  080   7  4   5.8   3.2
  7750  -7.2  19.0  035  18  9  -0.8  -0.4 | -10.3  13.5  080   8  4   6.2   3.4
  7500  -7.3  18.9  035  21 11  -1.6  -0.9 |  -9.9  14.2  080   7  4   5.4   3.0
  7250  -7.4  18.7  035  24 12  -1.7  -0.9 |  -9.5  14.9  075   6  3   5.4   2.9
  7000  -7.5  18.5  040  26 14  -0.6  -0.3 |  -9.1  15.6  070   5  3   7.4   4.1
  6750  -7.5  18.5  040  26 13   1.2   0.7 |  -8.5  16.7  060   4  2   8.8   4.8
  6500  -7.4  18.7  045  24 12   0.3   0.1 |  -7.9  17.8  045   3  2   7.7   4.2
  6250  -7.3  18.9  050  22 11   4.1   2.2 |  -7.3  18.9  030   3  1   9.3   5.1
  6000  -6.8  19.8  050  19 10   9.4   5.1 |  -6.5  20.3  025   3  1  11.5   6.3
  5750  -6.1  21.0  055  17  9  10.0   5.5 |  -5.7  21.7  020   3  1   9.5   5.2
  5500  -5.3  22.5  055  14  7  10.9   6.0 |  -5.0  23.0  020   3  1   9.5   5.2

           03/03/2015 at 1400 MST          |       03/03/2015 at 1700 MST
                                           |
K index... +12.7  LI... +274.9             | K index... +15.6  LI... +274.6
CAPE... 0.0  CIN... M                      | CAPE... 0.0  CIN... 0.0
                                           |
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 -56.9 -70.4  250  70 36   2.1   1.2 | -56.3 -69.3  250  71 36   2.4   1.3
 45000 -53.7 -64.7  245  93 48   2.1   1.1 | -52.7 -62.9  245  89 46   2.4   1.3
 40000 -52.4 -62.3  245  95 49   0.7   0.4 | -50.7 -59.3  245  88 45   1.2   0.7
 38000 -51.9 -61.4  240  95 49   3.0   1.6 | -49.9 -57.8  245  87 45   2.3   1.3
 36000 -50.2 -58.4  240  99 51   2.7   1.5 | -48.6 -55.5  240  87 45   2.3   1.2
 34000 -48.4 -55.1  240 103 53   2.6   1.4 | -47.2 -53.0  240  88 45   2.3   1.2
 32000 -45.8 -50.4  235 105 54   4.6   2.5 | -45.5 -49.9  240  88 45   2.6   1.4
 30000 -43.1 -45.6  235 107 55   4.6   2.5 | -44.0 -47.2  240  87 45   2.6   1.4
 29000 -41.7 -43.1  235 104 54   4.5   2.5 | -43.2 -45.8  240  85 44   2.8   1.5
 28000 -40.3 -40.5  235 100 52   4.5   2.5 | -42.3 -44.1  245  82 42   2.8   1.5
 27000 -39.0 -38.2  235  96 49   4.5   2.5 | -41.5 -42.7  245  78 40   2.8   1.5
 26000 -37.7 -35.9  235  92 47   3.7   2.1 | -40.7 -41.3  245  74 38   3.0   1.6
 25000 -36.6 -33.9  240  88 45   3.6   2.0 | -39.7 -39.5  250  69 36   3.2   1.7
 24000 -35.5 -31.9  240  84 43   3.6   2.0 | -38.8 -37.8  250  64 33   3.2   1.7
 23000 -34.4 -29.9  240  80 41   4.5   2.5 | -37.8 -36.0  255  59 30   5.0   2.7
 22000 -32.9 -27.2  245  76 39   5.1   2.8 | -35.8 -32.4  250  54 28   6.7   3.7
 21000 -31.4 -24.5  245  72 37   5.2   2.8 | -33.8 -28.8  250  48 25   6.8   3.7
 20000 -29.7 -21.5  245  67 35   6.4   3.5 | -31.7 -25.1  250  43 22   8.6   4.7
 19500 -28.8 -19.8  250  63 33   6.3   3.5 | -30.4 -22.7  250  41 21   8.4   4.6
 19000 -27.8 -18.0  250  60 31   6.3   3.5 | -29.2 -20.6  250  39 20   8.4   4.6
 18500 -26.9 -16.4  250  56 29   6.3   3.5 | -27.9 -18.2  255  37 19   8.4   4.6
 18000 -26.0 -14.8  255  52 27   6.4   3.5 | -26.6 -15.9  255  34 18   8.4   4.6
 17500 -24.7 -12.5  255  48 25   5.5   3.0 | -25.4 -13.7  255  33 17   8.7   4.8
 17000 -23.9 -11.0  260  45 23   5.7   3.1 | -23.4 -10.1  255  31 16   8.6   4.7
 16500 -22.8  -9.0  260  43 22   8.5   4.7 | -22.2  -8.0  260  30 16   8.0   4.4
 16000 -21.6  -6.9  260  40 21   8.4   4.6 | -21.0  -5.8  260  30 15   8.0   4.4
 15500 -20.4  -4.7  260  38 19   7.7   4.2 | -19.8  -3.6  260  29 15   8.1   4.4
 15000 -19.3  -2.7  260  35 18   7.7   4.2 | -18.6  -1.5  260  28 14   8.1   4.5
 14500 -18.1  -0.6  255  33 17   8.2   4.5 | -17.5   0.5  265  27 14   7.5   4.1
 14000 -16.9   1.6  255  30 16   8.4   4.6 | -16.4   2.5  265  26 13   7.4   4.0
 13500 -15.6   3.9  255  28 14   8.2   4.5 | -15.3   4.5  265  25 13   7.2   4.0
 13000 -14.4   6.1  255  26 13   8.1   4.4 | -14.2   6.4  265  24 13   7.1   3.9
 12500 -13.2   8.2  250  24 12   7.8   4.3 | -13.2   8.2  265  24 12   6.4   3.5
 12000 -12.1  10.2  250  23 12   7.5   4.1 | -12.4   9.7  260  22 11   5.6   3.1
 11500 -11.0  12.2  250  22 11   6.3   3.5 | -11.5  11.3  255  19 10   4.7   2.6
 11000 -10.2  13.6  250  21 11   5.1   2.8 | -11.0  12.2  250  19 10   3.7   2.0
 10500  -9.5  14.9  245  19 10   3.0   1.6 | -10.5  13.1  250  18  9   2.5   1.4
 10250  -9.4  15.1  245  18  9   1.4   0.8 | -10.3  13.5  240  18  9   1.5   0.8
 10000  -9.3  15.3  245  17  9   1.2   0.6 | -10.2  13.6  235  17  9   1.8   1.0
  9750  -9.3  15.3  250  16  8  -2.0  -1.1 | -10.1  13.8  230  17  9   2.1   1.2
  9500  -9.6  14.7  245  15  8  -4.3  -2.4 |  -9.9  14.2  225  16  8   3.1   1.7
  9250  -9.9  14.2  240  13  7  -4.3  -2.4 |  -9.6  14.7  215  15  8   3.3   1.8
  9000 -10.2  13.6  230  11  6  -4.7  -2.6 |  -9.4  15.1  205  14  7   3.6   2.0
  8750 -10.4  13.3  220  10  5   3.3   1.8 |  -9.1  15.6  195  14  7   3.8   2.1
  8500  -9.9  14.2  215   9  4   6.5   3.6 |  -8.9  16.0  190  12  6   2.8   1.5
  8250  -9.6  14.7  195   8  4   2.6   1.4 |  -8.7  16.3  180  11  6   2.1   1.2
  8000  -9.3  15.3  180   8  4   4.0   2.2 |  -8.5  16.7  165  10  5   2.7   1.5
  7750  -9.0  15.8  160   7  3   3.8   2.1 |  -8.3  17.1  150   9  5   4.3   2.3
  7500  -8.8  16.2  135   5  2   3.8   2.1 |  -7.9  17.8  140   9  4   5.2   2.8
  7250  -8.5  16.7  100   4  2   2.7   1.5 |  -7.5  18.5  125   8  4   4.5   2.5
  7000  -8.3  17.1  075   5  3   6.8   3.7 |  -7.2  19.0  115   8  4   6.0   3.3
  6750  -7.6  18.3  060   6  3  10.6   5.8 |  -6.7  19.9  100   8  4   7.6   4.2
  6500  -6.9  19.6  055   6  3   9.1   5.0 |  -6.1  21.0  090   8  4   7.2   3.9
  6250  -6.2  20.8  045   7  3   9.9   5.4 |  -5.6  21.9  080   8  4   7.8   4.3
  6000  -5.4  22.3  045   7  4  10.8   5.9 |  -5.0  23.0  070   8  4   9.1   5.0
  5750  -4.6  23.7  045   7  3  10.5   5.8 |  -4.3  24.3  065   7  4   9.2   5.1
  5500  -3.8  25.2  040   6  3  11.8   6.5 |  -3.6  25.5  060   6  3   9.5   5.2
________________________________________________________________________________

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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