NEW YORK (CBSNewYork) — A threat of thunderstorms has caused delays averaging nearly four hours at LaGuardia and Newark Liberty International airports.

The Federal Aviation Administration said Monday afternoon that due to the threat of severe weather, a traffic management program has been issued at LaGuardia, causing some arriving flights to be delayed by an average of 3 hours and 41 minutes.

Weather:  Heat Advisory In Effect Until 6 p.m. Tuesday | Alerts & AdvisoriesCooling Centers | Forecast

Arrivals at Newark were delayed by an average of 3 hours and 47 minutes.

Arrivals at John F. Kennedy International Airport were also delayed by an average of 2 hours and 23 minutes, but due to runway construction rather than the weather.

Severe thunderstorms have passed through some areas, including Nassau and Suffolk counties, on Monday afternoon. A severe thunderstorm watch was in effect until 10 p.m. Monday for almost all of New Jersey with the exception of the northeastern counties.

A severe thunderstorm warning was also issued for Dutchess County Monday afternoon.

The threat of severe weather came as a heat wave baked the Tri-State Area Monday.

A heat advisory is in effect until 6 p.m. Tuesday for New York City. Forecasters are calling for temperatures to hit or exceed 95 degrees again on Tuesday.

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