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North West Flight Rules North Central Flight Rules North East Flight Rules
West Central Flight Rules Central Flight Rules East Central Flight Rules
South West Flight Rules South Central Flight Rules South East Flight Rules
Hawaii Flight Rules
These flight rules are not a substitute for the offical FAA approved weather briefing.

Flight Rules Category Definitions:

Category Ceiling   Visibility
Low Instrument Flight Rules
LIFR* (red sky symbol)
below 500 feet AGL and/or less than 1 mile
Instrument Flight Rules
IFR (orange sky symbol)
500 to below 1,000 feet AGL and/or 1 mile to less than 3 miles
Marginal Visual Flight Rules
MVFR (yellow sky symbol)
1,000 to 3,000 feet AGL and/or 3 to 5 miles
Visual Flight Rules
VFR+ (green sky symbol)
greater than 3,000 feet AGL and greater than 5 miles
* IFR is ceiling less than 1,000 feet AGL and/or visibility less than 3 miles while LIFR is a sub-category of IFR.
+ VFR is ceiling greater than or equal to 1,000 feet AGL and visibility greater than or equal to 3 miles while MVFR is a sub-category of VFR.