Tropical Storm Julia
Tropical storm (SSHWS/NWS)
Julia 2016-09-13 1825Z
Julia at peak intensity over Florida on September 13
Formed September 13, 2016
Dissipated September 21, 2016
(Remnant low after September 18)
Highest winds 1-minute sustained: 50 mph (85 km/h)
Lowest pressure 1007 mbar (hPa); 29.74 inHg
Fatalities None
Damage $6.13 million (2016 USD)
Areas affected The Bahamas, Southeastern United States (Florida)
Part of the 2016 Atlantic hurricane season
Tropical Storm Julia was an unusual tropical storm that formed as a tropical depression very close to the coast of Southeastern Florida and strengthened into a moderate tropical storm over land. Julia was the eleventh tropical cyclone and tenth named storm of the active 2016 Atlantic hurricane season. Julia was notable for its strengthening over land, which is rare for tropical cyclones.

Meteorological History

Julia 2016 track

The track of Julia.

On September 1, a weak tropical wave with very little convective activity exited the coast of Africa. Convection briefly associated with the wave on September 6 while it was located near the Lesser Antilles, resulting in the formation of a low pressure area. However, the low opened up into a trough two days later. Convection once again increased with the system as it neared the Bahamas, and a new surface low developed. By 06:00 UTC on September 13, it is estimated that the low acquired sufficient organization to be classified as a tropical depression, when it was located just barely offshore southeastern Florida. Operationally, it was designated as a tropical cyclone until 21 hours later, when it was already inland; thus it was operationally believed that the cyclone formed inland but post-analysis confirmed otherwise.

6 hours after formation, despite being located over land, the depression strengthened into a tropical storm, and at 18:00 UTC on September 13, the cyclone reached its peak intensity with maximum sustained winds of 50 mph. The strongest winds associated with the cyclone were located in a patch of deep convection off the Florida coast, based on surface data. This peak intensity occurred before the cyclone was operationally named Julia, which occurred at 03:00 UTC on September 14. Genesis forecasts for Julia were very poor, and the cyclone had a "near-zero" chance of formation at the time of genesis in post-analysis. While moving northward, Julia began to slowly weaken over land, and winds fell to 45 mph by 06:00 UTC on September 14.

While models initially predicted Julia would slowly continue to move northward over land and dissipate, the center of Julia emerged off the coast of Georgia later on September 14. Julia maintained an intensity of 45 mph for the next two days, despite being over water, due to strong wind shear. The shear increased further late on September 16, and Julia weakened to a tropical depression. The depression barely maintained its status as a tropical cyclone as it meandered in the western Atlantic until it degenerated into a post-tropical remnant low at 00:00 UTC on September 19. At this point, Julia had become devoid of deep convection. The remnant low continued northwestward, eventually turning extratropical on September 21 and bringing heavy rainfall to Northeastern North Carolina. Julia's remnants brought heavy rains to North Carolina just two weeks before Hurricane Matthew brought catastrophic flooding to the state.