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Sources of Weather Information. Chapter 9, Section E. Preflight Weather Sources. Flight Service Stations - FSS can be contacted anywhere in the USA by using 1 800 WX-BRIEF 1 800 992-7433 Identify yourself as a pilot and provide the following information VFR or IFR

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sources of weather information

Sources of Weather Information

Chapter 9, Section E

preflight weather sources
Preflight Weather Sources
  • Flight Service Stations - FSS can be contacted anywhere in the USA by using 1 800 WX-BRIEF 1 800 992-7433
  • Identify yourself as a pilot and provide the following information
    • VFR or IFR
    • Aircraft number and type
    • Departure airfield
Route of flight
  • Destination
  • Flight Altitude
  • Estimated time of departure
  • Estimated time enroute
types of briefings
Types of Briefings
  • Standard is the most complete briefing and assumes no familiarity with the weather picture
  • Abbreviated is used to update weather information when you need only one or two specific items
  • Outlook is used if you departure is six or more hours away. You should update with a standard or abbreviated briefing closer to flight time
  • Telephone information briefing service allows you to get recorded weather information
  • It is designed to be a preliminary briefing tool. It is not intended to replace a standard briefing
  • Direct User Access Terminal System allows pilots with current medical certificates to receive weather and file flight plans with a personal computer and modem
  • If you have any question, you should contact a live briefer to help you interpret the raw data and to advise you on how or whether to complete a flight
  • DTC Duats
    • 1 800 245-3828
  • DynCorp
    • 1 800 767-9989
in flight weather sources
In-Flight Weather Sources
  • Airmets - WA - Airmans meteorological information are forecasts for a maximum of a six hour period
  • Sierra for IFR conditions
  • Tango for turbulence
  • Zulu for icing and freezing levels
  • Significant meteorological information - WS -
    • Severe Icing
    • Severe and extreme turbulence
    • Volcanic eruptions
    • Duststorms, sandstorms or volcanic ash lowering visibility to less than three miles
convective sigmets
Convective SIGMETs
  • Imply severe or greater turbulence, severe icing and low level wind shear
  • Contain either an observation and a forecast or just a forecast for tornadoes, significant thunderstorm activity or hail 3/4 inch or greater in diameter
enroute flight advisory service
Enroute Flight Advisory Service
  • Flight Watch is available daily from 6 AM to 10 PM when flying between 5,000 AGL and 17,500 MSL any where in the US
  • Contact on 122.0 with your aircraft ID, ARTCC facility identification and name of the nearest VOR
center weather advisory cwa
Center Weather Advisory CWA
  • Issued by ARTCC to alert pilots of existing or anticipated adverse weather conditions
  • May be issued prior to an AIRMET or SIGMET as a result of PIREPs
  • Hazardous in-flight weather advisory service is a continuous broadcast of in-flight weather advisories over selected VORs or SIGMETs, convective SIGMETs, AIRMETs, severe weather warming alerts AWW, and Center weather advisories CWAs.
  • Automated Weather Observing System was the first widely installed automated weather data gathering system
  • AWOS reports at fixed intervals and cannot issue special reports like ASOS does
  • Automated surface observation system are becoming the primary weather observing system in the United States
  • Can be reached by telephone or by monitoring an ASOS frequency
  • It provides information for ATIS