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IFR

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Weather

Instrument Flight Rules

NOAA National Weather Service — National Weather Service Glossary

Related Weather terms

AFSS
FAWS
Instrument Flight Rules
LIFR
Marginal Visual Flight Rules
MRGL
MVFR
Reconnaissance Code
Synoptic Track
Tropical Cyclone Plan of the Day
VFR

Nearby Weather terms

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Definitions are reproduced with attribution to their original sources; each entry links to the source and shows when it was retrieved. About · FAQ · Data build 2026-10-15.