IRFP-01
Metro Review
g. Chart always contains a legend in the middle of the top two
panels
(1) Solid line indicates terminal areas with ceilings less than
1,000 ft and/or visibility less than 3 miles (IMC) - colored
red
(2) Scalloped line indicates terminal areas with ceiling
between 1,000 ft but less than 3,000 ft and/or visibility
greater than 3 miles but less than 5 miles (MVFR) -
colored blue
(3) Bold long-dashed lines indicate areas of moderate or
greater turbulence
NOTE: The chart does not depict light turbulence.
Moderate turbulence is symbolized by an inverted V,
severe turbulence uses the same inverted V with a second
inverted V above.
(a) No number below the V indicates turbulence from the
surface up
(b) No number above the line indicates turbulence goes to
above the limits of the chart (24,000 ft)
(c) The letters “SFC” will appear below the line if
turbulence is expected from the surface to above
24,000 ft
NOTE: All turbulence altitudes MSL.
(4) The surface 32-degree isotherm is depicted with a dotted
line and is labeled
(5) Freezing level aloft indicated with a short dashed line and
labeled in hundreds of feet MSL at 4,000-ft intervals
NOTE: If an upper level freezing contour crosses the
surface freezing line, multiple freezing levels aloft are
indicated.
NOTE: Areas of icing are not specifically outlined on the
chart; however, a pilot should know that icing is implied in
clouds or areas of precipitation above the freezing level.
2. High-level significant weather prognostic—above 24,000 ft MSL
a. Manually prepared by NWS forecasters
b. Display 12- and 24-hour forecasts for significant weather
conditions
(8-97) Original
Page 1-51
Previous Page
