Pilot Institute

JANUARY 1, 2025

deviates slightly, using statute miles for visibility, feet for RVR, knots for wind speed, and inches of mercury for altimetry, while reporting temperature and dew point in Celsius. In our case, the first two numbers are saying that the wind is blowing at a speed of 4 knots. m/s) gusting to 41 MPH (36 knots; 18.5

AGL 98

AGL Turbulence Weather UTC 98

Pilot Institute

OCTOBER 17, 2024

These weather alerts each have their own role: AIRMETs warn about moderate conditions like turbulence, icing, and limited visibility, which can affect smaller or less equipped aircraft. SIGMETs alert pilots to more severe weather events like thunderstorms, volcanic ash, or strong turbulence that could pose serious risks to any flight.

UTC 52

UTC Turbulence Weather Knot 52

Pilot Institute

NOVEMBER 5, 2024

A sudden wind shift, a 10-knot or greater speed increase, a 45-degree or more direction change, or gusts exceeding limits may also cause a SPECI. This includes the wind direction in degrees and the wind speed in knots. Expect poor visibility, increased turbulence, and slippery runway surfaces.

Altimeter 52

Altimeter Weather Wind Shear Runway 52