 Soon afterward, Lorna encountered relatively strong vertical wind shear and steadily decreasing sea temperatures as it continued to track southwards, causing its gradual intensification trend to halt, and the JTWC to downgrade the system to a high-end tropical storm.On 28 April, somewhat unexpectedly, and contradicting forecasts by MFR and the JTWC, the system developed a clearly defined eye and underwent steady intensification.Consequently, MFR upgraded the system to a tropical cyclone, and the JTWC upgraded Lorna to Category 1 status on the Saffir–Simpson scale for the second time.