Example of
Accuracy Estimate
Absolute Error = 
| Forecast Value - Observed Value |
| Forecast Value - Observed Value |Error (Tucson) = | 5750 m-5780 m | = | -30 m | = 30 m
| 5750 m-5780 m | = | -30 m | = 30 mError (Newfoundland) = | 5280 m-5540 m | = | -260 m | = 260
m
Map average value is around 60 m, a
sufficiently small error that the locations
of the trough and ridge are accurately forecast| 5280 m-5540 m | = | -260 m | = 260
m5 Day Forecast
Verification
Ahrens 2nd Ed.