Governor places Guam in COR 3

Adelup (PNC file photo)

Governor Lou Leon Guerrero has placed Guam in Condition of Readiness (COR) 3 at 3 p.m.

At COR 3, the onset of damaging winds of 39-57 mph are possible within 48 hours. In this case, with Tropical Depression 20W, damaging winds are possible later this evening through Friday morning.

Neither typhoon force nor severe tropical storm force (58-73 mph) winds are expected from Tropical Depression 20W as it passes near or over Guam later this evening. The change in COR setting was done out of an abundance of caution. At COR 3, government of Guam operations continue as normal.

A tropical storm warning remains in effect for Guam, Rota, Tinian, and Saipan. A tropical storm warning means tropical storm conditions, including sustained winds of 39 to 74 mph, are expected within 24 hours. Tropical storm-force winds are expected late this afternoon through early Friday morning.

As of 1 p.m., 20W was located near 12.6 degrees north latitude and 145.0 degrees east longitude, about 75 miles southeast of Guam and 175 miles south of Saipan. It is moving west-northwest at 17 mph with maximum sustained winds of 35 mph.

What to Expect

Guam can expect to experience a low-end tropical storm. Showers and gusty winds will increase across Guam by 4 p.m. and continue on through midnight. Tropical storm-force winds of 35 mph – 45 mph with gusts up to 55 mph are expected by this evening. The Closest Point of Approach (CPA) has moved up to between 6 p.m. and 9 p.m. due to a slight increase in forward motion of TD 20W. Even after the system’s CPA, strong winds are expected to continue overnight. Rainfall amounts of 2 to 4 inches for Guam and 3 to 5 inches for CNMI, with locally higher amounts in gusty showers are expected.

Take Action to Prepare

  • Those living in flood-prone areas should take action; clear drainage areas and unblock clogged storm drains in your area to minimize flooding.

  • Be prepared to take action if flood advisories are issued. Do not camp, park, or hike along streams, rivers, and creeks during heavy rainfall. These areas can flood quickly and with little warning.

  • Clear loose debris around your yard and store any items such as tents and canopies that may become airborne with heavy winds before inclement weather arrives.

  • Stay up to date with the latest information. The system track or intensity may change, and advisories may be issued.

  • Locate or prepare your emergency preparedness kits for your household; stock up on non-perishable food items and water, flashlights, first-aid kits, batteries, matches or lighters, portable stove, toiletries, etc. Visit for more information on what to include in your supplies list.

  • Secure important documents such as birth certificates, tax papers, and insurance documents and keep copies in a water-proof bag.

  • Gas your vehicles and get fuel for your generators.

Visit the following links for the latest advisory information:

(JIC Release)