T L O Action: The student will interpret the information contained in a surface analysis chart. Condition: Given pertinent information about surface.
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Action: The student will interpret the information contained in a surface analysis chart.
Condition: Given pertinent information about surface analysis charts.
Standard: IAW AC 00-45F
Enabling Learning Objective (ELO) A
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
13,
METAR KATL 151450Z 28025KT 4SM DZFG
SCT014 BKN120 OVC300 15/13
A3049 RMK SLP315
315
CLEAR
FEW(1-2 octas)
SCATTERED(3-4 octas)
BROKEN(5-7 octas)
OVERCAST(8 octas)
OBSCURED
SKY COVERMISSING
REF: AC 00-45F
WIND DIRECTION
CALM
05 KNOTS
10 KNOTS
15 KNOTS
20 KNOTS
50 KNOTS
65 KNOTS
WINDSPEED
15
13,
TEMPERATURE
315
15
13,
WEATHER &OBSCURATION
315
RAIN
RAIN
DRIZZLE
SNOW
ICE PELLETS
HAIL SHOWER
RAIN SHOWER
SNOW SHOWER
T/STORM
FREEZINGRAIN
FREEZINGDRIZZLE
FOG
SMOKE
HAZE
15
13,
DEWPOINT
315
15
13,
315
STATION PRESSURE
1. STATION PRESSURE CORRECTED TO SEA LEVEL2. SHOWN IN HECTOPASCALS / MILLIBARS
1013.2 = 132
986.6 = 866
L
H
IND TRUE
H L
L H
Action: The student will interpret data contained in a weather depiction chart.
Condition: Given pertinent information about weather depiction charts.
Standard: IAW AC 00-45F
Enabling Learning Objective (ELO) B
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 COVERMISSING OR
PARTIALOBSCURATION
REF: AC 00-45F
BREAKS IN OVERCAST
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
4 ‚
No altitude will be given if FEW or SCT.
If BKN or OVC, height is ceiling.
CLOUD BASE
4
5
‚
No altitude will be given if FEW or SCT.
If BKN or OVC, height is ceiling.
SCT010 BKN020 OVC030
W.D. S.A.
020
Using the summation
method
FEW010 FEW020 SCT030
W.D. S.A.
VFR
MVFR
IFR
CEILING AND VISIBILITY GREATER THAN 3000 -- 5
CEILING AND / OR VISIBILITY LESS THAN 1000 -- 3
AREAS DEPICTED
3000 -- 5To
1000 -- 3
SHADED AREAS … IFR WITH CIG LESS THAN1000 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
15
13
315
METAR KATL 151450Z 28025KT 4SM DZFG
SCT014 BKN120 OVC300 15/13
A3049 RMK SLP315
,120
4
W.D. S.A.
,
Action: The student will interpret the information contained on a radar summary chart.
Condition: Given pertinent information about radar summary charts.
Standard: IAW AC 00-45F
Enabling Learning Objective (ELO) C
RADAR SUMMARY
Radar Summary Chart
Gives a three-dimensional viewpoint of clouds and
precipitation
Issued every hour
CONTOURS ATLEVELS
1, 3, AND 5.
1
3
5
Light to Moderate
Heavy to Very Heavy
Intense to Extreme
450
TOPS OF ECHOMaximum echo top does not
equal maximum cloud top
30
Area/Line Movement
CELL MOVEMENT
Symbol MeaningR RainRW Rain ShowerS SnowSW Snow ShowerT ThunderstormNE No Echoes
NA Not Available
OM Out for Maintenance
Line of Echoes – Solid (SLD)
WS999
WT999
HOOK
Severe Thunderstorm
Tornado Watch
Hook Echo
Severe weather watch area
FM 1-230 Referencesfor today
• Surface Analysis Chart 18-4
• Weather Depiction Chart 18-5
• Radar Summary 18-8
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