DrJack's WINDIP Upper-Air Wind Forecast for  Waynesboro_VA  on  SAT 03/13
 
ALERT@ 216:+mrf 240:+mrf
 
------  WS,WD,U(kt)  SITE=kshd  METAR=kshd  RidgePerp.=320  Run:03/13@13:30Z-13:33Z
 
RUC  :  00=03/13:12Z  03=03/13:15Z  06=03/13:18Z  09=03/13:21Z  12=03/14: 0Z
300mb:    35 125 -34    61 147 -60    58 123 -56    36 116 -33    27 106 -22
850mb:    24 115 -22    19 139 -19    11 207  -4    16 272  11     9 275   6
 
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NAM  :  00=03/13:00Z  12=03/13:12Z  24=03/14: 0Z  36=03/14:12Z  48=03/15: 0Z
300mb:    39 215 -10    38 110 -33    56 106 -46    15 057  -2    17 001  13
850mb:    30 104 -24    22 135 -22    17 291  15    20 313  20    18 320  18
 
GFS  :  00=03/13:00Z  12=03/13:12Z  24=03/14: 0Z  36=03/14:12Z  48=03/15: 0Z  60=03/15:12Z  72=03/16: 0Z
300mb:    37 214 -10    33 113 -29    27 112 -24    18 026   7    43 305  42    37 049   1    57 028  21
850mb:    35 111 -30    12 107 -10    18 308  18    22 319  22    18 322  18    23 008  15    29 002  21
 
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GFS  :  96=03/17: 0Z 120=03/18: 0Z 144=03/19: 0Z 168=03/20: 0Z 192=03/21: 0Z 216=03/22: 0Z 240=03/23: 0Z
300mb:     8 312   8    12 024   5    19 011  12    16 252   6    58 198 -31  +109 239  17  +131 252  48
850mb:    11 014   6    10 360   8    12 311  12     6 227  -0    37 162 -34  + 38 242   8  + 36 253  14
 
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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.