DrJack's WINDIP Upper-Air Wind Forecast for  Waynesboro_VA  on  THU 07/29
 
------  WS,WD,U(kt)  SITE=kshd  METAR=kshd  RidgePerp.=320  Run:07/29@13:30Z-13:36Z
 
RUC  :  00=07/29:12Z  03=07/29:15Z  06=07/29:18Z  09=07/29:21Z  12=07/30: 0Z
300mb:    32 280  25    37 275  26    42 276  30    49 275  35    55 283  44
850mb:    16 316  16    20 309  20    15 300  14    16 333  16    15 343  14
 
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NAM  :  00=07/29:00Z  12=07/29:12Z  24=07/30: 0Z  36=07/30:12Z  48=07/31: 0Z
300mb:    38 297  35    32 273  22    67 281  52    66 297  61    58 301  55
850mb:    12 247   3    14 314  14    10 312  10    10 353   8    10 347   9
 
GFS  :  00=07/29:00Z  12=07/29:12Z  24=07/30: 0Z  36=07/30:12Z  48=07/31: 0Z  60=07/31:12Z  72=08/01: 0Z
300mb:    37 298  34    30 286  25    59 290  51    70 302  66    65 299  60    59 286  49    45 282  36
850mb:    14 264   8    19 304  18    13 318  13     6 356   5     8 009   5    10 208  -4    14 225  -1
 
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GFS  :  96=08/02: 0Z 120=08/03: 0Z 144=08/04: 0Z 168=08/05: 0Z 192=08/06: 0Z 216=08/07: 0Z 240=08/08: 0Z
300mb:    46 282  36    33 341  31    22 298  20    29 293  26    40 266  24    42 264  24    34 256  15
850mb:     4 250   1     4 161  -4    12 246   3     9 258   4    10 274   7     6 339   6    11 068  -3
 
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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.