Users should check each plot's top header for current date.

Interpretation Caveats:

· It is important to recognize that there is considerable variability both in the model predictions and in the real atmosphere.  Comparison of predictions at different times is one indicator of the expected variability on a given day.  Mountain wave predictions are more reliable when wave is present at all forecast times.  If wave is forecast for only a single time then it is likely to be a transient event and the actual timing of its maximum may differ from that provided by the model.

· The mt. wave predictions depend upon a large-scale sounding forecast of wind and temperature which differs for each grid, so differing wave predictions can occur for the same geographic location in regions of grid overlap.  Comparison of such differences provides an additional indicator of wave variability for that day. 

· Wave locations are very dependent upon wind direction, which in turn depends upon the forecast time.   Actual wave locations may differ significantly if the actual wind direction aloft differs from the forecast large-scale wind direction. 

· The linear model may produce stronger and more extensive waves than actually occur.  Strength predictions are most useful for their relative values, for example to predict whether today will have stronger wave than yesterday.  Empirical experience must be used to relate model predicted updrafts to those actually experienced.

· The Boundary Layer (where thermals occur) is not considered, so waves can be incorrectly forecast to extend down to the surface.  In addition, rotor formation is not predicted.

· We emphasize that these forecasts are likely to be more valuable for their relative predictions, rather for their absolute predictions.  The most useful predictions are likely to result from empirical experience in each region, based upon long-term comparisons of the predictions to actual mt. wave occurrence.

· The model used here is experimental and part of a research project. We make no promises regarding the accuracy or reliability. Please use at your own risk.