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Snow Across the Great Lakes, Central Appalachians, and Northeast; Unsettled Weather in the West

Light to moderate snow will continue into Saturday over the Great Lakes, Central Appalachians, and Northeast. This weekend into next week, a series of atmospheric rivers will bring gusty winds, periods of heavy rain, and mountain snow to northern California and the Pacific Northwest. Colder temperatures are in store for the weekend from the Great Lakes to East Coast. Read More >

Jacksonville CWSU

Center Weather Service Unit

Additional Information

Weather.gov > Jacksonville CWSU > Additional Information

“Jax” Center Weather Services Unit (ZJX CWSU)

Jax Center Weather is located at the Federal Aviation Administration (FAA) Air Route Traffic Control Center (ARTCC) in Hilliard FL.  The CWSU is staffed by four National Weather Service (NWS) meteorologists.  The CWSU provides up to the minute weather information and briefings to the ZJX Traffic Management Unit (TMU) and operations supervisors. Special emphasis is given to weather conditions that would be hazardous to aviation or would impede the flow of air traffic in the National Airspace System (NAS). CWSU meteorologists also issue two unscheduled products: 1) The Center Weather Advisory (CWA) is an aviation weather warning for thunderstorms, icing, turbulence, and low IFR ceilings and visibilities.  And 2) The Meteorological Impact Statement (MIS) is a 2-12  hour forecast for weather conditions which are expected to impact ARTCC operations.

“Jax” Center (ZJX ARTCC):

Jax center (one of 20 centers in the continental United States) is responsible for approximately 160,000 square miles of airspace — airspace that covers parts of five states: Alabama, Georgia, Florida, North and South Carolina. Center-wide average daily traffic count is approximately 8600 operations, with peak traffic being over 9770 operations in one day. Fifty percent of traffic is air carrier, thirty percent general aviation, and twenty percent is military. Jax center is the fourth-busiest in the United States.