Figure 2-2. Frontal Symbols

CHAPTER TWO

METEOROLOGY FLIGHT PLANNING

The pressure systems mentioned are outlined by isobars drawn at 4-millibar intervals. When the

pressure gradient is very shallow, intermediate isobars (short dashed lines) are sometimes drawn

on the chart at one-half the standard interval. A two-digit number indicates the values of the

isobars (e.g., 16, which would indicate 1016.0 milliards).

Figure 2-2 Frontal Symbols

Station Model Plots

To build a Surface Analysis Chart, some of the information received is displayed around circles

in the form of station models. The station model is a pictorial shorthand that provides the

maximum data in a minimum amount of space. Figures 2-2 and 2-3 are provided as a review and

reference for other charts that use the station model plot.

Wind Direction: 330

Wind Speed: 65 kts

Sea Level Pressure: 1014.7 mb

Temperature

147

Present Weather

+28 /

Dew Point

Pressure Change (3 hrs)

Sky Cover

Figure 2-3 Station Model Explanation

2-4 DATA DISPLAYED ON WEATHER IMAGERY PRODUCTS