Property of Lear Siegler

Property of Lear Siegler

ELO 1Action: 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

SURFACE ANALYSIS CHART

PURPOSE.... TO PROVIDE THE PILOT WITH A GENERAL PICTURE OF THE WEATHER AT A SPECIFIC TIME Property of Lear Siegler

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

8. PRESSURE TREND (3 Hour)

Property of Lear Siegler

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

Property of Lear Siegler

CALM

05 KNOTS

10 KNOTS

15 KNOTS

20 KNOTS

50 KNOTS

65 KNOTS

WINDSPEED

Property of Lear Siegler

15

13,

6

315

TEMPERATURE

Property of Lear Siegler

15

13 6

315,

WEATHER &OBSCURATION

Property of Lear Siegler

RAIN

Property of Lear Siegler

RAIN

DRIZZLE

SNOW

ICE PELLETS

HAIL SHOWER

RAIN SHOWER

SNOW SHOWER

Property of Lear Siegler

T/STORM

FREEZINGRAIN

FREEZINGDRIZZLE

FOG

SMOKE

HAZEProperty of Lear Siegler

15

13,

6

315

DEWPOINTProperty of Lear Siegler

15

13,

6

315

STATION PRESSURE

Property of Lear Siegler

1. STATION PRESSURE CORRECTED TO SEA LEVEL2. SHOWN IN HECTOPASCALS / MILLIBARS

1013.2 = 132

986.6 = 866

Property of Lear Siegler

15

13,

6

315

PRESSURE TENDENCY (3 HOUR)

Property of Lear Siegler

1031.5

- .6

1030.9

3 hours ago

15

13,

8

101

CURRENT STATION PRESSURE = 1010.1

PRESSURE TREND = INCREASING

PRESSURE 3 HOURS AGO 1010.1 - 0.8

= 1009.3Property of Lear Siegler

15

13,

12

100

CURRENT STATION PRESSURE =

PRESSURE TREND =

PRESSURE 3 HOURS AGO

1010.0

DECREASING

1010.0 + 1.2= 1011.2

Property of Lear Siegler

CURRENT STATION PRESSURE =

PRESSURE TREND =

PRESSURE 3 HOURS AGO

1016.0

DECREASE THENSTEADY

1016.0 +2.4=1018.4

15

13,

24

160

Property of Lear Siegler

CURRENT STATION PRESSURE =

PRESSURE TREND =

PRESSURE 3 HOURS AGO

1014.2

STEADY

1014.2

15

13,

0

142

Property of Lear Siegler

CURRENT STATION PRESSURE =

PRESSURE TREND =

PRESSURE 3 HOURS AGO

1014.2

INCREASE THENDECREASE

1014.2

15

13,

0

142

Property of Lear Siegler

CURRENT STATION PRESSURE =

PRESSURE TREND =

PRESSURE 3 HOURS AGO

1014.2

DECREASE THENINCREASE

1014.2

15

13,

0

142

Property of Lear Siegler

L

H

IND TRUE

H L

L H

ELO 2Action: The student will interpret data

contained in a weather depiction chart.

Condition: Given pertinent information about weather depiction charts.

Standard: IAW AC 00-45F

WEATHER DEPICTION CHART

Property of Lear Siegler

WEATHER DEPICTION CHART

PURPOSE - To portray areas of IFR, VFR and MVFR

Property of Lear Siegler

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

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.

VISIBILITY

ONLY SHOWN WHEN 5 SM OR LESS

4 ‚

VISIBILITY

NO VISIBILITY SHOWN MEANS VISIBILITY IS GREATER THAN 5 SM

Property of Lear Siegler

WEATHER AND OBSTRUCTIONS

4 ‚

Property of Lear Siegler

CLOUD BASE

4 ‚

Property of Lear Siegler

No altitude will be given if FEW or SCT.

If BKN or OVC, height is ceiling.

CLOUD BASE

4

5

‚

Property of Lear Siegler

No altitude will be given if FEW or SCT.

If BKN or OVC, height is ceiling.

SCT010 BKN020 OVC030

Property of Lear Siegler

W.D. S.A.

020

Using the summation

method

FEW010 FEW020 SCT030Property of Lear Siegler

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

Property of Lear Siegler

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

Property of Lear Siegler

Property of Lear Siegler

15

13 6

315

METAR KATL 151450Z 28025KT 4SM DZFG

SCT014 BKN120 OVC300 15/13

A3049 RMK SLP315

,120

4

W.D. S.A.

,

Property of Lear Siegler

ELO 3Action: 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

RADAR SUMMARY

Radar Summary Chart

Gives a three-dimensional viewpoint of clouds and

precipitation

Issued every hour

Property of Lear Siegler

CONTOURS ATLEVELS

1, 3, AND 5.

1

3

5

Light to Moderate

Heavy to Very Heavy

Intense to Extreme

450

TOPS OF ECHO

Property of Lear Siegler

Maximum echo top does not

equal maximum cloud top

30

Area/Line Movement

CELL MOVEMENT

Property of Lear Siegler

Symbol MeaningR RainRW Rain ShowerS SnowSW Snow ShowerT ThunderstormNE No Echoes

Property of Lear Siegler

NA Not Available

OM Out for Maintenance

Property of Lear Siegler

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

FM 1-230 Referencesfor tomorrow…

• TAF App B-11

• Winds Aloft Chart 18-10

That’s All Folks!