Weather Service Dynamics

nonessential information to reduce frequency congestion. pilots of radar-identified aircraft whose aircraft is in dangerous proximity to terrain or to an obstruction. non control information in selected high-activity terminal areas.

Not forecasted. Greater than 6 statute miles. Possibly 6 statute miles.  

an abbreviated briefing. an outlook briefing. a standard briefing.

overcast at 2,000 feet during the forecast period between 2200Z and 2400Z. overcast at 200 ...

a general briefing. a standard briefing. an abbreviated briefing.

    1200Z to 1800Z. 1200Z to 2400Z. 1800Z to 2400Z.

A supplemental briefing. An outlook briefing. An abbreviated briefing.

3 statute miles. 6 statute miles. 1/2 statute mile.  

a forecast briefing. a prognostic briefing. an outlook briefing.