Model Output Statistics:
Frequently Asked Questions
Last updated: November 27, 2003
  Please send any questions or comments you may have to MDL_MOS.webmaster@noaa.gov.

Where can I find a list of all of the acronyms used on the MOS pages

A list of Frequently used Acronyms has been compiled, more entries will be added.

What happened to the MRF FOX MOS?

The obsolete MRF FOX was discontinued as of 0000 UTC on April 08, 2003. Since May of 2000, we have been producing the new MRF MEX MOS, which replaced the MRF FOX.

What happened to the MRF MOS Ensembles?

The 11 individual MRF MOS Ensemble messages are now available on our website, along with the operational MEX message. In the near future, we will begin issuing the Ensemble Summary Message. The ensemble products are available here.

When are you going to add more elements to the new MOS messages? When will they be complete?

For a full schedule of upcoming additions to the MAV,MEX, and MET messages, click here.

Is the NGM MOS going to disappear?

At this time there are no plans to remove the NGM MOS. This decision may be revisited once the full package of AVN MOS has been available for a full year.

Why aren't the products on your website always the most up-to-date?

These web pages are not considered operational, they are only monitored by us during normal working hours (M-F 7 am - 5:30 pm). As with any facility, we sometimes experience problems with our computers that cause the web pages to not be current. We encourage you to read the National Weather Service's Disclaimer and Privacy Policy.

When do the seasons change in your MOS equations?

It differs by element, model, and message.

ElementAVN MAVEta METNGM FWCMRF MEX
Temperature 4/1 - 9/30
10/1 - 3/31		 4/1 - 9/30
10/1 - 3/31		 3/1 - 5/31
6/1 - 8/31
9/1 - 11/30
12/1 - 2/29		 4/1 - 9/30
10/1 - 3/31
Ptype 9/1 - 5/31 9/1 - 5/31 9/16 - 5/15 -- CONUS
9/1 - 5/31 -- AK		 9/1 - 5/31
Thunderstorms 10/16 - 3/15
3/16 - 6/30
7/1 - 10/15		 10/16 - 3/15
3/16 - 6/30
7/1 - 10/15		 10/16 - 3/15
3/16 - 6/30
7/1 - 10/15		 10/16 - 3/15
3/16 - 6/30
7/1 - 10/15
All other Elements4/1 - 9/30
10/1 - 5/31		 4/1 - 9/30
10/1 - 3/31		 4/1 - 9/30
10/1 - 3/31		 4/1 - 9/30
10/1 - 3/31

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