Weather Impact Levels
FAA classifications indicating how weather conditions are affecting airport operations.
Weather impact levels are FAA classifications that indicate how current or forecasted weather conditions are affecting airport operations. These levels help travelers and airlines understand the severity of weather-related disruptions. Impact levels range from none (normal operations) through low, moderate, to high (severe disruptions). Weather impacts can affect visibility, runway conditions, wind speeds, and overall airport capacity.
- Thunderstorms and lightning
- Low visibility (fog, snow, rain)
- High winds or wind shear
- Snow and ice accumulation
- Extreme temperatures
Frequently Asked Questions
What do weather impact levels mean for my flight?
Low impact means minor delays are possible. Moderate impact suggests expect delays of 30-60 minutes. High impact indicates significant delays, cancellations, or ground stops are likely.
Why does weather far from the airport affect operations?
Aircraft must navigate around severe weather en route, and weather systems approaching an airport can trigger preemptive traffic management. Regional weather patterns affect entire airspace sectors.
How accurate are weather impact predictions?
Weather forecasts are generally reliable for the next few hours but become less certain further out. Check updates frequently as conditions can change rapidly.
Related Terms
Ground Stop
An FAA-imposed order that halts all departures to a specific airport due to severe conditions.
Ground Delay Program
An FAA traffic management program that assigns specific departure times to flights heading to a congested airport.
Arrival Delays
Delays affecting inbound flights at an airport, typically measured as additional time beyond scheduled arrival.
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