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Property of Lear Siegler. WEATHER CHARTS. Property of Lear Siegler. ELO 1. 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. SURFACE ANALYSIS CHART.
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WEATHER CHARTS Property of Lear Siegler
ELO 1 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
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
OVERCAST (8 octas) CLEAR FEW (1-2 octas) OBSCURED SCATTERED (3-4 octas) SKY COVER MISSING BROKEN (5-7 octas) REF: AC 00-45F
WIND DIRECTION Property of Lear Siegler
CALM 05 KNOTS 10 KNOTS WIND SPEED 15 KNOTS 20 KNOTS 50 KNOTS 65 KNOTS Property of Lear Siegler
315 15 , 13 6 TEMPERATURE Property of Lear Siegler
WEATHER & OBSCURATION , 315 15 13 6 Property of Lear Siegler
RAIN Property of Lear Siegler
RAIN HAIL SHOWER DRIZZLE RAIN SHOWER SNOW ICE PELLETS SNOW SHOWER Property of Lear Siegler
T/STORM FOG SMOKE FREEZING DRIZZLE FREEZING RAIN HAZE Property of Lear Siegler
315 15 , 13 6 DEWPOINT Property of Lear Siegler
315 15 , 13 6 STATION PRESSURE Property of Lear Siegler
1. STATION PRESSURE CORRECTED TO SEA LEVEL 2. SHOWN IN HECTOPASCALS / MILLIBARS 132 1013.2 = 986.6 = 866 Property of Lear Siegler
315 15 13 6 , 1031.5 - .6 1030.9 3 hours ago PRESSURE TENDENCY (3 HOUR) Property of Lear Siegler
101 15 , 13 8 CURRENT STATION PRESSURE = 1010.1 INCREASING PRESSURE TREND = PRESSURE 3 HOURS AGO 1010.1 - 0.8 = 1009.3 Property of Lear Siegler
, 100 15 13 12 CURRENT STATION PRESSURE = 1010.0 DECREASING PRESSURE TREND = 1010.0 + 1.2 = 1011.2 PRESSURE 3 HOURS AGO Property of Lear Siegler
, 160 15 13 24 CURRENT STATION PRESSURE = 1016.0 DECREASE THEN STEADY PRESSURE TREND = 1016.0 +2.4 =1018.4 PRESSURE 3 HOURS AGO Property of Lear Siegler
, 142 15 13 0 CURRENT STATION PRESSURE = 1014.2 STEADY PRESSURE TREND = 1014.2 PRESSURE 3 HOURS AGO Property of Lear Siegler
, 142 15 13 0 CURRENT STATION PRESSURE = 1014.2 INCREASE THEN DECREASE PRESSURE TREND = 1014.2 PRESSURE 3 HOURS AGO Property of Lear Siegler
, 142 15 13 0 CURRENT STATION PRESSURE = 1014.2 DECREASE THEN INCREASE PRESSURE TREND = 1014.2 PRESSURE 3 HOURS AGO Property of Lear Siegler
L IND TRUE H L L H H
Break Time Countdown
ELO 2 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
WEATHER DEPICTION CHART Property of Lear Siegler
WEATHER DEPICTION CHART PURPOSE - To portray areas of IFR, VFR and MVFR FREQUENCY - Issued every 3 hours Property of Lear Siegler
OVERCAST (8 octas) CLEAR FEW (1-2 octas) OBSCURED SCATTERED (3-4 octas) SKY COVER MISSING OR PARTIAL OBSCURATION BROKEN (5-7 octas) BREAKS IN OVERCAST REF: AC 00-45F
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 No altitude will be given if FEW or SCT. If BKN or OVC, height is ceiling. ‚ 4 Property of Lear Siegler
CLOUD BASE No altitude will be given if FEW or SCT. If BKN or OVC, height is ceiling. ‚ 4 5 Property of Lear Siegler
W.D. S.A. Using the summation method 020 SCT010 BKN020 OVC030 Property of Lear Siegler
W.D. S.A. FEW010 FEW020 SCT030 Property of Lear Siegler
AREAS DEPICTED CEILING AND VISIBILITY GREATER THAN 3000 -- 5 VFR 3000 -- 5 To 1000 -- 3 MVFR CEILING AND /OR VISIBILITY LESS THAN 1000 -- 3 IFR Property of Lear Siegler
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 Property of Lear Siegler
, , W.D. S.A. 315 15 4 13 6 120 METAR KATL 151450Z 28025KT4SMDZFG SCT014 BKN120OVC300 15/13 A3049 RMK SLP315 Property of Lear Siegler
ELO 3 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
Radar Summary Chart • Gives a three-dimensional viewpoint of clouds and precipitation • Issued every hour
1 3 5 CONTOURS AT LEVELS 1, 3, AND 5. Intense to Extreme Heavy to Very Heavy Light to Moderate Property of Lear Siegler