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Severe Turbulence Alert In Effect; United Flight Sends 3 to Hospital

by Weatherboy Team Meteorologist - February 11, 2023

The area in brown is currently under a Severe Turbulence Alert from the Aviation Weather Center at the National Weather Service. Image: NWS / AWC
The area in brown is currently under a Severe Turbulence Alert from the Aviation Weather Center at the National Weather Service. Image: NWS / AWC

A fresh Severe Turbulence Alert is in effect across a broad portion of the Mid Atlantic less than 2 days after a United flight which encountered severe turbulence sent three to the hospital. The alert was issued by the Aviation Weather Center (AWC) within the National Weather Service and National Oceanic and Atmospheric Administration.

Air travel in and out of  New York City, Philadelphia, New Jersey, and Washington, DC airports are included in the alert area, impacting air travel in/out of LaGuardia (LGA) and JFK (JFK) Airports in New York, Newark Liberty International Airport (EWR)  and Atlantic City International Airport (ACY) in New Jersey, Philadelphia International Airport (PHL) in Pennsylvania, Washington and Baltimore-area airports Dulles (IAD), National (DCA), and Baltimore (BWI), as well as smaller airports throughout the region.

 

The National Weather Service's Aviation Weather Center issues SIGMETs for significant meteorological events unfolding in airspace around the U.S. Image: NWS AWC
The National Weather Service’s Aviation Weather Center issues SIGMETs for significant meteorological events unfolding in airspace around the U.S. Image: NWS AWC

 

A United 767-300, like this one photographed on an inaugral Newark-Nice, France flight, encountered severe turbulence near Cancun, Mexico on Monday. Image: United
A United 767-300, like this one photographed on an inaugural Newark-Nice, France flight, encountered severe turbulence near Cancun, Mexico earlier this winter. Image: United Airlines

Specifically, SIGMET QUEBEC 3 has been issued through at least 1530 UTC today.

According to the AWC, there is occasional severe turbulence between 18,000 and 33,000 feet, an area common for commercial aircraft to fly through. The turbulence is being created by wind sheer associated with the jet stream in the region.   Wind shear is a difference in wind speed and/or direction over a very short distance in the atmosphere. Airline pilots generally regard significant wind shear to be a horizontal change in airspeed of 30 knots (15 m/s or 34 mph) for light aircraft and 45 knots (23 m/s or 51 mph) for traditional airliners flying at flight altitude.

Flying through turbulence can be dangerous, with injuries encountered on U.S. airline flights recently.

Just Thursday night, a Newark-Tampa flight operated by United Airlines encountered severe turbulence. When flight 600 finally landed in Tampa, it was met by paramedics that treated passengers and crew at the scene. Ultimately, 1 flight attendant and 2 passengers needed hospitalization after being examined at the airport for injuries sustained during the rough flight.

Earlier this winter,  a United Airlines 767 jet encountered severe turbulence on its flight to Houston, Texas. Due to that encounter with rough air, 3 crew members and 2 passengers had to be rushed to the hospital for care upon landing.




A Hawaiian Airlines Airbus 330 aircraft, such as this one pictured, encountered extreme turbulence in the last half hour of its flight from Phoenix to Honolulu today. Image: Hawaiian Airlines
A Hawaiian Airlines Airbus 330 aircraft, such as this one pictured, encountered extreme turbulence in the last half hour of its flight from Phoenix to Honolulu today. Image: Hawaiian Airlines

The day before the Houston incident earlier this winter,  on December 18 , Hawaiian Airlines Flight 35 flew through severe turbulence before landing at Honolulu International Airport after originating in Phoenix, Arizona. A Mass Casualty Emergency Event was declared, with dozens of passengers needing care for injuries sustained in the violent ride. Officials with Honolulu Emergency Medical Services and American Medical Response say the flight encountered the extreme turbulence about 30 minutes prior to landing; they treated 36 patients at the airport. 20 patients, ranging from a 14-month old toddler to older adults, were transported to hospitals near the airport, some with serious injuries.

Known as a SIGMET, short for Significant Meteorological Information, the severe weather advisory issued by the AWC contains weather-related information concerning the safety of all aircraft passing through a specific zone. Sometimes AIRMETs are issued too; an AIRMET consists of turbulence, visibility, and icing-related warnings that are less severe than those in a SIGMET.

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