Precautionary Use Statement: This product is for flight planning
purposes only and should always be used in combination with ceiling and
visibility (C&V) information from official sources such as METARs, AIRMETs,
TAFs and Area Forecasts. CVA (Ceiling and Visibility Analysis) is intended to
aid situational awareness with a quick-glance visualization of current C&V
conditions across an area or along a route of flight. CVA derives C&V for
areas between METAR stations so may, as a function of distance from a METAR,
misrepresent actual conditions. See the Help Page for additional information
on CVA use and limitations.
On April 30, 2020 NCVA will be replaced by Gridded LAMP (GLMP) data available in the Helicopter Emergency Services (HEMS) tool. More information can be found in the Service Change Notice.
Regional Ceiling and Vis Plots
Click on site name to access regional plot