Archived Model Output Statistics (MOS)
The National Weather Service operates a number of operational weather prediction models. These models produce a gridded forecast that is then processed thru a series of equations (Model Output Statistics) to produce a site specific forecast. You can find out more about MOS on the NWS's website. The IEM maintains an interactive MOS archive to support local research and makes it available for others to use as well.
|AVN||1 June 2000||16 Dec 2003|
|ETA||24 Feb 2002||9 Dec 2008|
|GFS||16 Dec 2003||--Realtime--|
|NAM||9 Dec 2008||--Realtime--|
The MOS products are processed in realtime and immediately available from the applications listed below.
- Interactive MOS Tables
Generates a simple table of how a variable changes over time and by model run.
- Meteogram Generator
Fancy application to generate graphs of current MOS data.
- Comma Delimited output
Simple web service provides csv data for a site and for a period of ten days forecast. An example URL call would be:
csv.php?station=KAMW&valid=2009-01-10%2012:00 (all data 10 days) csv.php?station=KAMW&runtime=2009-01-10%2012:00&model=GFS (explicit)
- Download the raw data!
This application returns the raw MOS data for a location and time period of your choice.
- Monthly Plots of Station Temperature Forecasts
This application creates a graph of daily MOS forecasts and actual temperatures for a month and station of your choice.
Note: MOS variables are stored as their raw encodings in the text product, except wdr (wind direction) which is multiplied by 10 for its true value.