Met 5

37,000 feet.

Pressure differences.

ice crystals.

At standard temperature.

Frost on the aircraft.

Temperature of the collecting surface is below the dewpoint of surrounding air and the dewpoint is colder than freezing.

With a warm front, the most critical period is before the front passes the airport.

The conditions are favorable for radiation fog.

true altitude and at field elevation.

turbulence and good surface visibility.

Smooth air, poor visibility, fog, haze, or low clouds.

water vapor condenses.

Frost causes early airflow separation resulting in a loss of lift.

ground radiation on clear, cool nights when the wind is light.

An air mass moving inland from the coast in winter.

variation of solar energy received by the Earth's regions.

Poor visibility; steady precipitation; stratus clouds.

Warm, mosit air over low, flatland areas on clear, calm nights.

A wind change.

It is an atmospheric condition that may be associated with a low level temperature inversion, a jet stream, or a frontal zone.

On all side of the thunderstorm cell and directly under the cell.

A stable layer of air.

Coriolis.

Surface friction.

Fog.

Advection fog and upslope fog.

air temperature.

Set your altimeter to 19.92" Hg.

friction between the wind and the surface.

Sudden increases in wind speed of at least 16 knots rising to 22 knots or more, lasting for at least 1 minute.

there is freezing rain at a higher altitude.

radiation on a clear, relatively still night.

The temperature is above freezing at your altitude.

between -55° and -65°C

With either a wind shift or a windspeed gradient at any level in the atmosphere.

12 to 24 hours in the future.

combines data from the pitot-static sensors and temperature sensors.

3°C per 1,000 feet.

rain cloud.

lowest layer of clouds or obscuring phenomena aloft that is reported as broken or overcast.

Ice pellets.

Occasional light chop.

an abundance of condensation nuclei from combustion products.

Abrupt change of temperature lapse rate.

Climb because the temperature is warmer at a higher altitude.

5,350 feet MSL.

High clouds.

covers an extensive area and has fairly uniform properties of temperature and moisture.

Stratified clouds with little vertical development.

The temperature is above freezing at flight altitude.

Coastal areas.

weaker and farther north in the summer.

High, middle, low, and those with extensive vertical development.

It may be associated with either a wind shift or a windspeed gradients at any level in th atmosphere.

The stability of the air before lifting occurs.

Ambient lapse rate.

Dewpoint difference.

relatively small changes in temperature with an increase in altitude.

Freezing rain.

Moist air moving over colder ground or water.

Temperatures are above freezing at some higher altitude.

stratiform clouds with little or no turbulence.

Clear sky, little or no wind, small temperature/dewpoint spread, and over a land surface.

Good visibility, except in blowing sand or snow.

The winds at 2,000 feet tend to parallel the isobars while the surface winds cross the isobars at an angle toward lower pressure and are weaker.

tend to increase temperature variations.

good visibility, showery precipitation, and cumuliform type clouds.

ice forming on the propeller spinner and reaching back to the propeller blades.

In freezing precipitation below a cloud deck.

7°C

poor visibility, steady precipitation, and stratus type clouds.

evaporation and sublimation.

Stratiform clouds.

in stable air.

Upward currents.

Clear skies with gusty, turbulent winds and cooler temperatures.

Over mountainous areas.

50 knots or greater.

friction between the wind and the surface.

When standard atmospheric conditions exist.

The temperature to which air must be cooled to become standard.

circumnavigate the cell by at least 20 nautical miles.