Sky Cover Symbols

METEOROLOGY FLIGHT PLANNING

CHAPTER TWO

208.

WEATHER DEPICTION CHARTS

The Weather Depiction Chart is a facsimile presentation of the surface METARs, valid as of the

time indicated on the chart (Figure 2-15). It is used in flight planning to determine areas of

IFR/VFR and to determine the minimum ceilings en route. To help the pilot better understand

the cause of low ceilings and/or poor visibilities, the chart will also include the positions of fronts

from the previous hour. The station models depicted represent individual station observations,

but they are different from the general station model presented in chapter 2. Because of the

purpose of the chart, information presented is kept to a minimum for simplicity. Therefore, these

models have no wind, temperature, or pressure, and indicate only (1) sky coverage, (2) ceilings or

the height (AGL) of the lowest cloud layer (SCT or greater), (3) visibilities of six miles or less,

and (4) weather and obstructions to visibility, each of which are described below.

Figure 2-16 Weather Depiction Chart

Sky Cover Symbols

Total sky cover is reported in the station models of the Weather Depiction Chart using the same

methods listed in Figure 2-3. Additionally, a right bracket (]) to the right of the symbol indicates

the METAR is from an automated station.

DATA DISPLAYED ON WEATHER IMAGERY PRODUCTS

2-17