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WEATHER CHARTS

WEATHER CHARTS. 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.

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WEATHER CHARTS

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  1. WEATHER CHARTS

  2. 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

  3. SURFACE ANALYSIS CHART PURPOSE.... TO PROVIDE THE PILOT WITH A GENERAL PICTURE OF THE WEATHER AT A SPECIFIC TIME

  4. SURFACE ANALYSIS CHART • Chart is issued every 3 hours • Information taken from METAR reports

  5. CONDITIONS DETERMINED FROM CHART • 1. SURFACE WINDS • 2. FRONTAL SYSTEMS • 3. PRESSURE SYSTEMS • 4. SKY COVERAGE • 5. TEMPERATURE AND DEW POINT • PRECIPITATION AND OBSCURATIONS • STATION PRESSURE (corrected for sea level)

  6. 15 , 13 315 METAR KATL 151450Z 28025KT 4SM DZFG SCT014 BKN120 OVC300 15/13 A3049 RMK SLP315

  7. OVERCAST (8 octas) CLEAR FEW (1-2 octas) OBSCURED SCATTERED (3-4 octas) SKY COVER MISSING BROKEN (5-7 octas) REF: AC 00-45G

  8. WIND DIRECTION

  9. CALM 05 KNOTS 10 KNOTS WIND SPEED 15 KNOTS 20 KNOTS 50 KNOTS 65 KNOTS

  10. 15 , 13 TEMPERATURE 315

  11. WEATHER & OBSCURATION , 315 15 13

  12. RAIN

  13. RAIN HAIL SHOWER DRIZZLE RAIN SHOWER SNOW ICE PELLETS SNOW SHOWER

  14. T/STORM FOG SMOKE FREEZING DRIZZLE FREEZING RAIN HAZE

  15. 15 , 13 315 DEWPOINT

  16. 315 15 , 13 STATION PRESSURE

  17. 1. STATION PRESSURE CORRECTED TO SEA LEVEL 2. SHOWN IN HECTOPASCALS / MILLIBARS 132 1013.2 = 986.6 = 866

  18. L IND TRUE H L L H H

  19. 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

  20. WEATHER DEPICTION CHART

  21. WEATHER DEPICTION CHART PURPOSE - To portray areas of IFR, VFR and MVFR FREQUENCY - Issued every 3 hours

  22. 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

  23. VISIBILITY ONLY SHOWN WHEN 5 SM OR LESS ‚ 4

  24. VISIBILITY NO VISIBILITY SHOWN MEANS VISIBILITY IS GREATER THAN 5 SM

  25. WEATHER AND OBSTRUCTIONS ‚ 4

  26. 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.

  27. CLOUD BASE No altitude will be given if FEW or SCT. If BKN or OVC, height is ceiling. ‚ 4

  28. CLOUD BASE No altitude will be given if FEW or SCT. If BKN or OVC, height is ceiling. ‚ 4 5

  29. W.D. S.A. Using the summation method 020 SCT010 BKN020 OVC030

  30. W.D. S.A. FEW010 FEW020 SCT030

  31. AREAS DEPICTED CEILING AND VISIBILITY GREATER THAN 3000 -- 5 VFR 3000 -- 5 To 1000 -- 3 MVFR CEILING AND /ORVISIBILITY LESS THAN 1000 -- 3 IFR

  32. 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

  33. , , W.D. S.A. 315 15 4 13 120 METAR KATL 151450Z 28025KT4SMDZFG SCT014 BKN120OVC300 15/13 A3049 RMK SLP315

  34. 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)

  35. RADAR SUMMARY

  36. Radar Summary Chart • Shows intensity, coverage, tops, and movement of precipitation • Creates gives a three-dimensional viewpoint of precipitation

  37. Radar Summary Chart • Issued twice per hour (15 and 45 minutes of the hour)

  38. 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.

  39. Wind barbs show direction the cell is moving FROM “FROM the NE at 15 kts”

  40. Tops of echoes are labeled in hundreds of feet in bold black numbers “Tops at 57,000 ft”

  41. End of SU5: Weather Charts

  42. FM 1-230 Referencesfor tomorrow… • TAF App B-11 • Winds Aloft Chart 18-10

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