Enabling Learning Objective
(ELO) A
Action: The student will interpret the
information contained in a surface
analysis chart.
Condition: Given pertinent information
about surface analysis charts.
Standard: IAW AC 00-45G
SURFACE ANALYSIS CHART
PURPOSE.... TO PROVIDE THE PILOT
WITH A GENERAL PICTURE OF THE
WEATHER AT A SPECIFIC TIME
SURFACE ANALYSIS CHART
 Chart is issued every 3 hours
 Information taken from METAR reports
CONDITIONS DETERMINED FROM CHART
1. SURFACE WINDS
2. FRONTAL SYSTEMS
3. PRESSURE SYSTEMS
4. SKY COVERAGE
5. TEMPERATURE AND DEW POINT
6. PRECIPITATION AND OBSCURATIONS
7. STATION PRESSURE (corrected for sea level)
,
15
315
13
METAR KATL 151450Z 28025KT 4SM DZFG
SCT014 BKN120 OVC300 15/13
A3049 RMK SLP315
CLEAR
FEW
(1-2 octas)
OVERCAST
(8 octas)
OBSCURED
SCATTERED
(3-4 octas)
BROKEN
(5-7 octas)
SKY COVER
MISSING
REF: AC 00-45G
WIND DIRECTION
CALM
05 KNOTS
10 KNOTS
15 KNOTS
20 KNOTS
50 KNOTS
65 KNOTS
WIND
SPEED
TEMPERATURE
,
315
15
13
WEATHER &
OBSCURATION
,
15
13
315
RAIN
RAIN
HAIL SHOWER
DRIZZLE
RAIN SHOWER
SNOW
ICE
PELLETS
SNOW SHOWER
T/STORM
FOG
FREEZING
DRIZZLE
SMOKE
FREEZING
RAIN
HAZE
,
15
315
13
DEWPOINT
STATION PRESSURE
,
15
13
315
1. STATION PRESSURE CORRECTED TO
SEA LEVEL
2. SHOWN IN HECTOPASCALS / MILLIBARS
1013.2 = 132
986.6 = 866
L
IND
TRUE
H
L
L
H
H
Enabling Learning Objective
(ELO) B
Action: The student will interpret data
contained in a weather depiction chart.
Condition: Given pertinent information
about weather depiction charts.
Standard: IAW AC 00-45G
WEATHER DEPICTION CHART
WEATHER DEPICTION CHART
PURPOSE - To portray areas of IFR,
VFR and MVFR
FREQUENCY - Issued every 3
hours
CLEAR
FEW
(1-2 octas)
SCATTERED
(3-4 octas)
BROKEN
(5-7 octas)
OVERCAST
(8 octas)
OBSCURED
SKY COVER
MISSING OR
PARTIAL
OBSCURATION
BREAKS IN
OVERCAST
REF: AC 00-45F
VISIBILITY
ONLY SHOWN WHEN 5 SM OR LESS
4
‚
VISIBILITY
NO VISIBILITY SHOWN MEANS VISIBILITY IS
GREATER THAN 5 SM
WEATHER AND OBSTRUCTIONS
‚
4
Sky cover symbols shown
on the weather depiction
chart are the worst sky
conditions (summation
method) for that station.
The altitude below the
station will show the
ceiling.
CLOUD BASE
No altitude will be
given if FEW or SCT.
If BKN or OVC, height
is ceiling.
4
‚
CLOUD BASE
No altitude will be
given if FEW or SCT.
If BKN or OVC, height
is ceiling.
‚
4
5
W.D.
S.A.
Using the
summation
method
020
SCT010 BKN020 OVC030
W.D.
S.A.
FEW010 FEW020 SCT030
AREAS DEPICTED
VFR
MVFR
IFR
CEILING AND VISIBILITY
GREATER THAN 3000 -- 5
3000 -- 5
To
1000 -- 3
CEILING AND / OR VISIBILITY
LESS THAN 1000 -- 3
SHADED AREAS … IFR WITH CIG LESS THAN
1000 FT AND/OR VSBY LESS THAN 3 MI
CONTOURED WITHOUT SHADING…MVFR AREAS WITH
CIG GREATER THAN OR EQUAL TO 1000 TO LESS THAN
OR EQUAL TO 3000 FT AND/OR VSBY GREATER THAN OR
EQUAL TO 3 TO LESS THAN OR EQUAL TO 5 MI
NO CONTOURS… VFR AREAS WITH CIG GREATER THAN
3000 FT AND VSBY GREATER THAN 5 MI
W.D.
4
,
S.A.
,
15
315
13
120
METAR KATL 151450Z 28025KT 4SM DZFG
SCT014 BKN120 OVC300 15/13
A3049 RMK SLP315
Enabling Learning Objective
(ELO) C
Action: The student will interpret the
information contained on a Radar
Summary Chart.
Condition: Given pertinent information
about radar summary charts.
Standard: Technical Information Notice
13-11 NWS (Effective 11 June 3012)
RADAR SUMMARY
Radar Summary Chart
Shows intensity, coverage, tops,
and movement of precipitation
Creates gives a three-dimensional
viewpoint of precipitation
Radar Summary Chart
 Issued twice per hour
(15 and 45 minutes of the hour)
Intensity
measured in
decibels (dBZ)
light green
to purple
dBZ
Nondimensional "unit" of radar
reflectivity which represents a
logarithmic power ratio (in decibels, or
dB) with respect to radar reflectivity
factor, Z.
Wind barbs
show direction
the cell is
moving FROM
“FROM the NE at 15
kts”
Tops of echoes
are labeled in
hundreds of feet
in bold black
numbers
“Tops at 57,000 ft”
FM 1-230 References
for tomorrow…
• TAF App B-11
• Winds Aloft Chart 18-10