IEM Daily Feature
Friday, 16 September 2011

Missing MOS

Posted: 16 Sep 2011 06:02 AM

Model Output Statistics (MOS) are produced by taking raw numerical forecast model output and comparing it with observations to produce hopefully bias corrected results. Some of the models were predicting very cold temperatures yesterday and actual reported lows ended up being a bit warmer than predicted. The featured chart looks at the range of predicted morning low and afternoon high temperatures by the NAM MOS data along with the actual observation from the Des Moines Airport sensor. This range is produced by looking at the various MOS output from the model runs for each forecast time.

Good = 19
Bad = 9

Tags:   mos