t l o action: the student will interpret the information contained in a surface analysis chart....
TRANSCRIPT
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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
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SURFACE ANALYSIS CHART
PURPOSE.... TO PROVIDE THE PILOT WITH A GENERAL PICTURE OF THE WEATHER AT A SPECIFIC TIME
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SURFACE ANALYSIS CHART
Chart is issued every 3 hours
Information taken from METAR reports
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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)
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15
13,
METAR KATL 151450Z 28025KT 4SM DZFG
SCT014 BKN120 OVC300 15/13
A3049 RMK SLP315
315
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CLEAR
FEW(1-2 octas)
SCATTERED(3-4 octas)
BROKEN(5-7 octas)
OVERCAST(8 octas)
OBSCURED
SKY COVERMISSING
REF: AC 00-45F
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WIND DIRECTION
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CALM
05 KNOTS
10 KNOTS
15 KNOTS
20 KNOTS
50 KNOTS
65 KNOTS
WINDSPEED
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15
13,
TEMPERATURE
315
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15
13,
WEATHER &OBSCURATION
315
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RAIN
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RAIN
DRIZZLE
SNOW
ICE PELLETS
HAIL SHOWER
RAIN SHOWER
SNOW SHOWER
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T/STORM
FREEZINGRAIN
FREEZINGDRIZZLE
FOG
SMOKE
HAZE
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15
13,
DEWPOINT
315
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15
13,
315
STATION PRESSURE
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1. STATION PRESSURE CORRECTED TO SEA LEVEL2. SHOWN IN HECTOPASCALS / MILLIBARS
1013.2 = 132
986.6 = 866
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L
H
IND TRUE
H L
L H
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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
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WEATHER DEPICTION CHART
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WEATHER DEPICTION CHART
PURPOSE - To portray areas of IFR, VFR and MVFR
FREQUENCY - Issued every 3 hours
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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
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VISIBILITY
ONLY SHOWN WHEN 5 SM OR LESS
4 ‚
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VISIBILITY
NO VISIBILITY SHOWN MEANS VISIBILITY IS GREATER THAN 5 SM
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WEATHER AND OBSTRUCTIONS
4 ‚
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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.
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CLOUD BASE
4 ‚
No altitude will be given if FEW or SCT.
If BKN or OVC, height is ceiling.
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CLOUD BASE
4
5
‚
No altitude will be given if FEW or SCT.
If BKN or OVC, height is ceiling.
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SCT010 BKN020 OVC030
W.D. S.A.
020
Using the summation
method
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FEW010 FEW020 SCT030
W.D. S.A.
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VFR
MVFR
IFR
CEILING AND VISIBILITY GREATER THAN 3000 -- 5
CEILING AND / OR VISIBILITY LESS THAN 1000 -- 3
AREAS DEPICTED
3000 -- 5To
1000 -- 3
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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
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15
13
315
METAR KATL 151450Z 28025KT 4SM DZFG
SCT014 BKN120 OVC300 15/13
A3049 RMK SLP315
,120
4
W.D. S.A.
,
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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
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RADAR SUMMARY
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Radar Summary Chart
Gives a three-dimensional viewpoint of clouds and
precipitation
Issued every hour
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CONTOURS ATLEVELS
1, 3, AND 5.
1
3
5
Light to Moderate
Heavy to Very Heavy
Intense to Extreme
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450
TOPS OF ECHOMaximum echo top does not
equal maximum cloud top
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30
Area/Line Movement
CELL MOVEMENT
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Symbol MeaningR RainRW Rain ShowerS SnowSW Snow ShowerT ThunderstormNE No Echoes
NA Not Available
OM Out for Maintenance
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Line of Echoes – Solid (SLD)
WS999
WT999
HOOK
Severe Thunderstorm
Tornado Watch
Hook Echo
Severe weather watch area
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FM 1-230 Referencesfor today
• Surface Analysis Chart 18-4
• Weather Depiction Chart 18-5
• Radar Summary 18-8