Tropical Cyclone Activity Report – Pacific Ocean / Indian Ocean / Arabian Sea
Apr 26, 2020
CURRENT TROPICAL CYCLONES:
Tropical Cyclone 01Eis located approximately 770 miles southwest of the southern tip of Baja California – Last Advisory
Tropical Cyclone 01E…as of advisory #6 – Last Advisory
This first tropical depression of the preseason is moving toward the northwest near 9 mph. A motion towards the west-northwest is expected by late afternoon, followed by a turn towards the west later tonight.
Maximum sustained winds are near 30 mph with higher gusts. Additional weakening is forecast during the next 48 hours, and the depression is expected to dissipate by Monday night.
According to the NHC, the cyclone has lacked significant organized deep convection for at least 10 hours, and the system is moving into increasingly more stable air and over cooler sea surface temperatures. Therefore, the depression has been downgraded to a post-tropical remnant low.
Although the system may still produce some sporadic convection late tonight during the convective maximum period, dry and stable air along with strong westerly shear will likely prevent any appreciable convection from persisting over the next day or so. This should cause the remnant low to weaken and then open up into a trough in 36-48 hours.
There are no active tropical cyclones
PDC will resume production of these daily reports when the 2020 hurricane season begins again on June 1st.
2019 Hurricane Season Summary for the Central Pacific Basin
The 2019 hurricane season featured five tropical cyclones in the Central Pacific Hurricane Center (CPHC) area of responsibility, which is near the season average. Hurricane season runs from June 1 to November 30. The Central Pacific basin extends from 140°W to the International Date Line. Four to five tropical cyclones occur during an average year.
Hurricane Erick was the first tropical cyclone of the season in the Central Pacific, moving into the basin from the east on July 30. Erick rapidly intensified to a major hurricane (category 4 on the Saffir-Simpson Hurricane Wind Scale) later that day, then steadily weakened as it passed far south of the main Hawaiian Islands.
Tropical Storm Flossie entered the basin on August 3 and approached Hawaii from the east, eventually dissipating before reaching the islands. Tropical Depression 12-E entered the basin on September 4 and strengthened to Tropical Storm Akoni. Akoni was the first tropical cyclone to be named from the Central Pacific list of names since Hurricane Walaka in 2018.
Tropical Depression Kiko entered the basin on September 24 and immediately dissipated. Tropical Storm Ema, the second cyclone to be named from the Central Pacific list of names, wwweloped southwest of the main Hawaiian Islands on October 12. Ema dissipated over the southern portion of the Papahanaumokuakea Marine National Monument shortly before crossing between French Frigate Shoals and Maro Reef.
Impacts to the State of Hawaii: Swells from Tropical Cyclone Barbara, which dissipated just before crossing into the Central Pacific basin, led to high surf along east facing shores of the state during July 6-9. Remnant moisture from Barbara also led to heavy rain across Maui and Hawaii Counties during July 8-11. Swells generated by Tropical Cyclones Erick and Flossie led to high surf along east and south facing shores during August 1-6. Moisture associated with Erick also contributed to heavy rain over Hawaii County on August 2, and across Kauai County during August 4-5.
Hurricane Season Outlook: NOAA’s 2019 hurricane season outlook issued on May 22, 2019, called for five to eight tropical cyclones in the Central Pacific basin, with a 70% chance of above-normal tropical cyclone activity, a 20% chance of near-normal activity, and a 10% chance of below-normal activity. The 2019 season started with an El Niño event that was expected to last through the fall. Instead, steady cooling commenced early in the summer leading to neutral conditions by the heart of the hurricane season.