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25 Cards in this Set
- Front
- Back
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AIRMET |
Airmen's Meteorological Information |
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SIGMET |
Significant Meteorological Information |
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FA |
Area Forecast |
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TRACON |
Terminal Radar Approach Control |
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ATCT |
Airport Traffic Control Tower |
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ATIS |
Automated Terminal Information System |
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What types of weather briefings are there? |
Standard Briefing(required) Abbreviated Briefing Outlook Briefing |
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What does a Standard Weather Briefing include? |
Adverse Conditions VFR Flight NOT RECOMMENDED Synopsis Current Conditions En Route Forecast Destination Forecast Winds and Temperatures Aloft NOTAMs Prohibited Areas and Special Flight Rules Areas ATC Delays Other Information |
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FIS-B |
Flight Information Service-Broadcast |
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ASD-B |
Automatic Dependent Surveillance-Broadcast |
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METAR |
Aviation Routine Meteorological Report |
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SPECI Criteria |
Wind Shift (45º in <15 min & > 10kts) Visibility RVR Tornado, Funnel Cloud, or Waterspout Thunderstorm (begins/ends) Precipitation (hail, freezing rain, ice pellets) Squalls Ceiling Sky Condition Volcanic Eruption Aircraft Mishap Miscellaneous |
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PIREP |
Pilot Weather Report |
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AIREP |
Air-Reports |
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TDWR |
Terminal Doppler Weather Radar |
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How much of an area must be affected for a non convective SIGMET to be issued? |
3,000 square miles |
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What criteria is a non convective SIGMET issued for? |
Severe Turbulence (SEV TURB) Severe Icing (SEV ICE) Widespread Duststorm (WDSPR DS) Widespread Sandstorm (WDSPR SS) Volcanic Ash (VA) |
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How long are non convective SIGMETs valid for? |
up to but not exceeding 4 hours |
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What are the criteria for a convective SIGMET to be issued? |
• A line of thunderstorms at least 60 miles long with thunderstorms affecting at lat 40 percent of its length • An area of active thunderstorms affecting at least 3,000 square miles covering at least 40 percent of the area concerned and exhibiting a very strong radar reflectivity intensity or a significant satellite or lightning signature • Embedded or severe thunderstorm(s) expected to occur for more than 30 minutes during the valid period regardless of the size of the area |
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What are the criteria for a special convective SIGMET to be issued? |
• Tornado, hail greater than or equal to 3/4 inch, or wind gusts greater than or equal to 50 knots are reported • Indications of rapidly changing conditions if, in the forecaster's judgement, they are not sufficiently described in existing convective SIGMETs • Special issuance is not required for a valid convective SIGMET |
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How long are convective SIGMETs valid for? |
2 hours, or until superseded by the next hourly issuance |
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What are the criteria for an AIRMET to be issued? |
• IMC • Widespread Mountain Obscuration • Moderate Turbulence • Sustained surface winds greater than 30 kts • Moderate Icing • Non-Convective LLWS potential |
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How often are AIRMETs issued? |
4x daily |
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How long are AIRMETs valid for? |
6 hours |
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What are the types of AIRMETs? |
Sierra - IMC and/or extensive mountain obscuration Tango - turbulence, sustained sfc winds > 30 kts, non-convective LLWS Zulu - Icing |
