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About
the Model Diagnostics Discussion
The HPC model diagnostic meteorologist prepares the Model
Diagnostic Discussion which consists of three sections:
1)
An evaluation of the analyses of the primary models (NAM, GFS)
2)
A review of model trends and biases.
3)
A description of model differences and preferences through 84 hours.
This discussion is issued twice during each of the day and night shifts, and may include evaluation
of short range ensemble forecasts (SREF) and other global models.
The following table shows the deadline and content for each issuance.
|
| Issuance Time |
Content |
| 0400Z/1600Z |
Evaluate NAM initialization and trends from previous runs |
| 0530Z/1730Z |
Evaluate GFS initialization
Review GFS trends from previous runs
Discuss model differences and preferences |
During the cool season
(Nov 1 - Apr 15), this meteorologist is also primarily responsible for requesting
reconnaissance flights whenever the potential exists for major winter storm
development over the East or Gulf Coast states. During the Atlantic hurricane season
(June 1 - Nov 30), he or she coordinates with the National Hurricane Center (NHC) whenever
a tropical cyclone is located west of 60 degrees West longitude in the Atlantic basin, Caribbean Sea,
or Gulf of Mexico.
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www.weather.gov 
Rainfall