DrJack's WINDIP Upper-Air Wind Forecast for  Waynesboro_VA  on  FRI 02/03
 
ALERT@ 00:*eta,*avn 12:*eta 24:+avn 120:+mrf
 
------  WS,WD,U(kt)  SITE=kshd  METAR=kshd  RidgePerp.=320  Run:02/03@13:30Z-13:36Z
 
RUC  :  00=02/03:12Z  03=02/03:15Z  06=02/03:18Z  09=02/03:21Z  12=02/04: 0Z
300mb:   111 274  77   107 275  76    94 275  67    93 273  63    84 271  55
850mb:    19 347  17    16 350  14    11 328  11     9 295   8    13 253   5
 
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NAM  :  00=02/03:00Z  12=02/03:12Z  24=02/04: 0Z  36=02/04:12Z  48=02/05: 0Z
300mb:  *124 278  92  *108 276  78    92 279  69    78 279  58    83 272  56
850mb:  * 31 306  30  * 22 342  20    12 249   4    15 292  13     4 270   3
 
GFS  :  00=02/03:06Z  12=02/03:18Z  24=02/04: 6Z  36=02/04:18Z  48=02/05: 6Z  60=02/05:18Z  72=02/06: 6Z
300mb:  *117 275  83   100 272  67  + 82 270  52    93 275  66   102 267  61    90 273  61    95 278  70
850mb:  * 23 332  23     7 318   7  + 21 269  13    15 281  12    13 237   2    16 329  16    14 229  -0
 
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GFS  :  96=02/07: 0Z 120=02/08: 0Z 144=02/09: 0Z 168=02/10: 0Z 192=02/11: 0Z 216=02/12: 0Z 240=02/13: 0Z
300mb:    73 235   7  + 93 244  22   106 237  13    89 253  35    58 232   2    70 265  40    33 291  29
850mb:    16 241   3  + 20 285  16    11 186  -8    13 233   1    17 257   8    17 331  17    12 248   4
 
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The criterion "mt. wave" windspeeds used for this site are:
To have a mt. wave somewhere (indicated by "+" marks)
  (1) windspeed of 65 kt at 300 mb (approx. 31,000 ft)
  (2) windspeed of 20 kt at "ridgetop" level of 850 mb (approx. 5,000 ft)
To have a mt. wave at designated ridge (indicated by "*" marks)
  (1) perpendicular wind of 46 kt at 300 mb (approx. 31,000 ft)
  (2) perpendicular wind of 14 kt at "ridgetop" level of 850 mb (approx. 5,000 ft)
These criteria based on the those empirically developed
for the Sierra wave by Doug Armstrong of the Reno NWS
 
For a description of the forecast format and forecasts for other locations, see: 
   http://www.drjack.info/WINDIP/
Please recognize that the utilized mt. wave criterion is simplistic
while mt. wave behavior can be complex, so the simple yes/no program
predictions cannot be expected to cover all mt. wave occurrences.