Appendix XIII— FLIGHT FORECAST FOLDER (OPNAV FORM 3140/25) 



HWD CHART SYMBOLS 



As 

 A 



TURB 



/// 



RED 

 RED 

 RED 

 RED 

 RED 

 RED 

 RED 

 RED 



RED 

 GRN 



LITE RIME ICING 

 MDT RIME ICING 

 HVY RIME ICING 

 LITE CLEAR ICING 

 MDT CLEAR ICING 

 HVY CLEAR ICING 

 LITE TURBULENCE 

 MDT TURBULENCE 



SEV TURBULENCE 



EXTREME TURBULENCE 



RAIN 



RAIN SHOWERS 



* 



5 



TV 



-9* 



r 



A 



V 



DC 



GRN 

 GRN 

 GRN 

 YLW 

 RED 

 RED 

 BRN 

 GRN 

 GRN 

 GRN 

 RED 

 RED 

 RED 



RAIN ft SNOW (MIXED) 



SNOW 



SNOW SHOWERS 



FOG 



HAIL 



THUNDERSTORMS 



BLOWING DUST/SAND 



BLOWING SNOW 



ICE PELLETS (SLEET) 



FREEZING RAIN 



SQUALLS 



WATERSPOUT/ TORNADO 



LIGHTNING 



COLD FRONT 



QUASI-STATIONARY FRONT 



OCCLUDED FRONT 



PUR 

 BRN 



-ao- 



— .JO- 



INTER-TROPICAL CONVERGENCE ZONE 



INSTABILITY (SQUALL) 

 LINE OF FLIGHT 



ISOTHERM WITH HEIGHT 



TROPICAL DISTURBANCE 



UPPER AIR CHART SYMBOLS 



■■0 



ISOTACHS INDICATING ' 

 SPEED IN KNOTS 



ISOTHERMS OF TEMPERATURE 

 IN DEGREES CELSIUS 



JET STREAM AXIS 



WIND DIRECTION AND SPEED ARROWS 



ABBREVIATIONS 



TCU 



BLO 



CLD 



CNS 



CNTR 



DCRS 



FNT 



FRO 



GRADU 



INCRS 



ISLTD 



LYR 



NUM 



OCN 



SCT 



UNK 



VCNTY 



ALTOCUMULUS 



ALTOSTRATUS 



CUMULONIMBUS 



CIRROCUMULU5 



C I RRUS 



CUMULUS 



CIRROSTRATUS 



NIMBOSTRATUS 



STRATOCUMULUS 



STRATUS 



TOWERING CU 



BELOW 



CLOUD 



CONTINUOUS 



CENTER 



DECREASING 



FRONT 



FREQUENT 



GRADUALLY 



INCREASING 



ISOLATED 



LAYEREO 



NUMEROUS 



OCCASIONAL 



SCATTERED 



UNKNOWN 



VICINITY 







EN ROUTE 



FLIGHT LOG 



RECORD ALL SIGNIFICANT WEATHER ENCOUNTERED AND ANY MAJOR DEVIATIONS FROM FORECASTiD 

 CONDITIONS. 



POSIT ION 



1 IME 



ALT ITUDt 



S IGNIF ICANI Wf ATHIK 









JO 















I"' 







i^ 



ir 





i v 



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