IH.I.B.K3b
KnowledgeMeteorology applicable to the departure, en route, alternate, and destination for flights conducted under Instrument Flight Rules (IFR) to include expected climate and hazardous conditions such as:
Wind (e.g., windshear, mountain wave, factors affecting wind, etc.)
From the FAA library
- 3 Overview of Aviation Weather Information › 3.4.2 Summaries of Specific Weather Information Contained in Various Weather Products › 3.4.2.2 Products with Wind Information
Medium-Level SIGWX G A jet stream axis with a wind speed aloft of more than 80 knots is depicted with double hatched lines identifying 20-knot speed changes. Global forecast of a jet stream axis with a wind speed ... aloft of more than 80 knots is depicted with double hatched lines identifying 20-knot speed changes. WAFS G Winds aloft are issued at select FLs and are provided in chart and grid point formats. Wind speed and direction (true…
- 16 Mountain Weather › 16.2 Mountain Waves and Adverse Winds › 16.2.2 Kelvin-Helmholtz (K-H) Waves
Figure 16-1. Gravity Wave Oscillations The described gravity wave will have measurable wavelength, amplitude, phase speed, and period. The period of this type of atmospheric disturbance is related to the temperature of the air and the “spread” between ... rate and the dry adiabatic lapse rate (or, equivalently, the degree of stability present). In general, the large-scale wind (wind shear) changes in altitude and temperature (lapse rate), the size and shape of the mountain or ridge over which…
- 3 Overview of Aviation Weather Information › 3.4.2 Summaries of Specific Weather Information Contained in Various Weather Products › 3.4.2.13 Products with Mountain Obscuration Information
Products with Mountain Obscuration Information Table 3-16. Weather Element: Mountain Obstruction Type: text (T), graphic (G), image (I), voice (V) May be included in RMK section at some mountain airports. At times it may be inferred or implied ... reporting of clouds at ASOS/AWOS located in mountain passes. Weather Camera I Mountain obscuration may be visible on the camera. Advisories AIRMET T, G AIRMET Sierra are issued when widespread mountain obstruction is occurring or expected to occur. Forecasts Aviation…
- Chapter 14: Airport Operations › Wind Direction Indicators
Wind Direction Indicators It is important for a pilot to know the direction of the wind. At facilities with an operating control tower, this information is provided by ATC. Information may also be provided by FSS personnel either located ... receive and broadcast on this frequency. When none of these services is available, it is possible to determine wind direction and runway in use by visual wind indicators. A pilot should check these wind indicators even when information is provided…
- Chapter 12: Weather Theory › Wind and Currents › Wind and Pressure Representation on Surface Weather Maps
Wind and Pressure Representation on Surface Weather Maps Surface weather maps provide information about fronts, areas of high and low pressure, and surface winds and pressures for each station. This type of weather map allows pilots to see the locations ... fronts and pressure systems, but more importantly, it depicts the wind and pressure at the surface for each location. For more information on surface analysis and weather depiction charts, see Chapter 13, Aviation Weather Services. Wind conditions are reported…