1 August 2015 - bulletin 503

Updated at 1500 GMT
Latest warnings for 09E and 13W
Disturbance update


EASTERN PACIFIC OCEAN
HURRICANE Guillermo / 09E
Warning 11 from NHC at 1500 GMT
Position 13.5N 139.0W
Location 1145 miles ESE of Hilo, Hawaii
Movement 280° (W) at 12 knots
Maximum sustained winds 90 knots gusting to 110 knots
Saffir-Simpson category: 2
Winds of 34 knots or higher occur within 140 miles of the centre
Winds of 64 knots or higher occur within 25 miles of the centre
Minimum central pressure: 970 mbar
Threatened landmasses Hawaii
Next warning from NHC / CPHC at 2100 GMT

Guillermo is continuing to move westnorthwest. The storm will maintain current strength for about 24 hours, before encountering less favourable conditions, which will prompt a weakening trend. At the same time, upon crossing west of 140W, the Central Pacific Hurricane Center will take over the issuance of warnings on Guillermo.

NORTHWESTERN PACIFIC OCEAN
Tropical storm Soudelor / 13W
Warning 10 from JTWC at 1500 GMT
Position 14.1N 150.8W
Location 298 miles ESE of Saipan
Movement 275° (W) at 13 knots
Maximum sustained winds 45 knots gusting to 55 knots
Winds of 34 knots or higher occur within 50 to 70 miles of the centre
Threatened landmasses Northern Marianas, Taiwan
Maximum significant wave height 15 feet
Next warning from JTWC at 2100 GMT

Soudelor will continue to move westnorthwest towards the Marianas. It will intensify again and pass close to Alamagan at 85-100 knots on Sunday. Beyond that, Soudelor will intensify further to 120 knots after 3 days. A weakening trend will then set in.

Regional warnings
A typhoon WARNING is in force in Saipan and Tinian.
A typhoon watch is in force for Agrihan, Pagan, Alamagan
A tropical storm watch is in force for Rota

TROPICAL DISTURBANCE UPDATE
SOUTHWESTERN PACIFIC OCEAN
Update from JTWC at 0600 GMT
System 91P
Position 10.1S 170.4E
Location 620 miles NW of Nadi, Fiji
Likelihood of tropical cyclone formation within 24 hours is LOW

NORTHWESTERN PACIFIC OCEAN
Update from JTWC at 0600 GMT
System 95W
Position 28.6N 145.8E
Location 525 miles SE of Tokyo, Japan
Likelihood of tropical cyclone formation within 24 hours is MEDIUM

NORTHERN ATLANTIC OCEAN
Update from NHC at 1200 GMT
System 94L is no longer suspect for tropical cyclone formation