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Tropical Cyclone Halong Expected to Intensify After Passing Through Marianas

July 30, 2014

PDC’s Global Hazards Atlas illustrates the potential track and estimated rainfall for Tropical Storm Halong after passing through the Mariana Islands. 

Tropical Cyclone Halong (11W) has passed between Rota and Guam in the Mariana Islands. According to a Stars and Stripes blog, heavy rainfall caused flooding in low-lying areas of Guam, and strong winds downed trees and power lines in several villages resulting in power outages.

Rota was relatively unscathed by TC Halong. Rota’s Mayor Melchor A. Mendiola stated that no flooding was reported in residential areas because neighborhoods are located at a higher elevation than the coastline, in a release by Guam’s Pacific Daily News.

In preparation for the cyclone, the JTWC generated a tropical storm warning for Guam, Tinian and Saipan, and typhoon warning for Rota. Additionally, the National Weather Service (NWS) issued flash flood warnings for Guam and Rota. However, all tropical storm and typhoon warnings have been expired.

TC Halong remains active in the northwestern Pacific Ocean and is tracking west-northwestward. JTWC expects TC Halong to intensify to typhoon status by August 1, as it moves northwestward in the western Pacific.

For more information on Tropical Cyclone Halong:
• Visit the Joint Typhoon Warning Center or National Weather Service for the latest updates,
• View the Guam Homeland Security/Office of Civil Defense page,
• Take a look at information from NASA and 

• Visit Guam's Pacific Daily News.

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About PDC:

Pacific Disaster Center (PDC) envisions a safer, more secure world—where populations live in more disaster-resilient communities informed by science and technology, and equipped with sound decision support tools. To help make that vision a reality, PDC is dedicated to supporting evidence-based disaster risk reduction (DRR) efforts by providing actionable information and applications to the public and disaster managers worldwide. PDC, a program managed by the University of Hawaii, was established by the U.S. government in 1996.