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STATISTICAL MODELING BRANCH
Current MOS Forecasts:
Guidance based on the GFS and NAM models.
Gridded MOS Development & Information:
Explanation of Gridded GFS-Based MOS (6-192 hours)
Short-Range Guidance & Development:
Explanation of NAM- and GFS-Based MOS (12-72 hours)
Extended-Range Guidance & Development:
Explanation of Extended- GFS-Based MOS (24-192 hours) and Experimental Ensemble MOS
MOS Guidance Resources:
Station lists, Change notices, Sample messages, References
MOS General Information & FAQs
Recent Update Notices, Mailing List, List of Acronyms
Verification of MOS Guidance:
Evaluation of MOS Forecasts, National Verification Program
Test Results of MOS Products
The Statistical Modeling Branch (SMB) of the Meteorological Development Laboratory (MDL), formerly the Techniques Development Laboratory, produces objective forecast guidance products using Model Output Statistics (MOS). The MOS approach is a technique to interpret numerical weather prediction model output.
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