Tropical Storm Lisa
Tropical storm (SSHWS/NWS)
Lisa 2016-09-21 1245Z
Lisa near peak intensity on September 21
Formed September 19, 2016
Dissipated September 25, 2016
Highest winds 1-minute sustained: 50 mph (85 km/h)
Lowest pressure 999 mbar (hPa); 29.5 inHg
Fatalities None
Damage None
Areas affected None
Part of the 2016 Atlantic hurricane season

Tropical Storm Lisa was a moderate tropical storm in the active 2016 Atlantic hurricane season that did not impact land, that remained far out at sea.

Meteorological History

On September 14, the National Hurricane Center (NHC) noted the possibility of a tropical wave developing into a tropical cyclone near the Cape Verde Islands over the coming days. On September 16, the wave exited the African coast. After an ASCAT pass showed a well-defined circulation and the cyclone had maintained organized deep convection for several hours, the low pressure area became a tropical depression at 12:00 UTC on September 19, while it was located southwest of Cape Verde.

Little change in intensity occurred that day and night. However, at 12:00 UTC on September 20, the cyclone was upgraded to Tropical Storm Lisa, based on Dvorak estimates. Lisa intensified slightly that evening and overnight, and reached its first peak intensity at 09:00 UTC on September 21 with maximum sustained winds of 50 mph. Increasing wind shear caused Lisa's appearance to degrade later that day, and its winds were lowered to 45 mph as a result.

Despite the weakening, an ASCAT pass on the morning of September 22 showed that Lisa was producing winds as high as 50 mph, and that it had restrengthened. Lisa reached its peak intensity around 15:00 UTC on September 22, with maximum sustained winds of 50 mph and a minimum pressure of 999 mbar. Shear began to quickly increase that night, though, and Lisa's circulation became exposed, like "so many Atlantic tropical cyclones in 2016" (according to Eric Blake). Lisa's deep convection nearly dissipated on September 23, but later redeveloped. Operationally, Lisa weakened to a tropical depression late on September 23, but post-analysis shows that the cyclone maintained tropical storm force winds and actually strengthened slightly early on September 24 based on ASCAT data. Lisa degenerated into a remnant low at 06:00 UTC on September 25.

Although Lisa became a remnant low, convection redeveloped on September 26 and NHC mentioned it had a slight chance of regeneration in its tropical weather outlook. The remnants failed to redevelop, however, and the low dissipated on September 28.