An AIRMET Tango is issued to warn pilots about:
AIFR conditions and mountain obscuration.
BModerate turbulence, sustained surface winds of 30 knots or more, and low-level wind shear.✓
CModerate icing and freezing level heights.
Why →AIRMET Tango covers moderate-or-greater turbulence not associated with thunderstorms, sustained surface winds of 30 knots or more, and low-level wind shear. For drone pilots, AIRMET Tango conditions are directly hazardous. 30-knot winds exceed most consumer drone operating limits.
The trap →Icing is AIRMET Zulu. IFR conditions are AIRMET Sierra. Tango covers turbulence and wind. T for Turbulence.
Field note →Most consumer drones specify maximum wind speeds of 22–27 knots. AIRMET Tango triggers at 30 knots. Right at or above those limits. An active AIRMET Tango is usually a hard no-go for small sUAS.
SOURCE → FAA Aviation Weather Services / PHAK Chapter 13CHECKED JUL 16ACS III.A.K1MED