Special Weather Statement

The Joint Typhoon Warning Center (JTWC) has upgraded Invest 99W to Tropical Depression 31W. As of 7:00 PM ChST this evening, 31W was moving northwest at 21 MPH with maximum sustained winds of 30 MPH. The current track shows 31W passing north of Agrihan early Saturday morning, strengthening into a low-end tropical storm. However, tropical storm-force winds are expected to remain north of the center, so damaging winds are not expected for Alamagan, Pagan, or Agrihan at this time. However, residents of the northern CNMI should monitor the forecast for any changes to this expectation. 31W is forecast to exit the northern CNMI by Saturday afternoon, possibly remaining a tropical storm.

Through tonight, prepare for increasing rainfall, with isolated thunderstorms and strong gusty winds within the heavier showers. 1 to 2 inches of rainfall are expected, with gusts up to 40 mph possible.

This will be the final Special Weather Statement issued regarding TD 31W. Please refer to NWS Guam Public Advisories under WMO header WTPQ31 PGTW, as well as JTWC bulletins under WMO header ABPW10 PGTW and WTPN31 PGTW.