28 July 2017 - bulletin 430

Updated at 1800 GMT
Latest warnings for 09E, 10E, 07W, 11W and 12W


EASTERN PACIFIC OCEAN
Tropical storm Hilary / 09E
Warning 29 from NHC at 1500 GMT
Position 19.2N 118.4W
Location 605 miles WSW of the southern tip of Baja California, Mexico
Movement 305° (NW) at 7 knots
Maximum sustained winds 55 knots gusting to 70 knots
Winds of 34 knots or higher occur within 105 miles of the centre
Minimum central pressure: 996 mbar
Threatened landmasses NONE
Next warning from NHC at 2100 GMT

Hilary will move generally westnorthwest. The system will weaken slowly over the next few days as and after it merges with Irwin.

Tropical storm Irwin / 10E

Warning 25 from NHC at 1500 GMT
Position 14.8N 125.3W
Location 1150 miles WSW of the southern tip of Baja California, Mexico
Movement Stationary
Maximum sustained winds 50 knots gusting to 65 knots
Winds of 34 knots or higher occur within 70 miles of the centre
Minimum central pressure: 998 mbar
Threatened landmasses NONE
Next warning from NHC at 2100 GMT

Irwin is quasi-stationary and will not move much for a day or so. When Hilary passes to the north, the system will moved off north, later northwest, before merging with Hilary after 3-4 days.

NORTHWESTERN PACIFIC OCEAN

TYPHOON Noru / 07W
Warning 32 from JTWC at 1500 GMT
Position 28.3N 143.7E
Location 107 miles NE of Chichi Jima
Movement 230° (SW) at 9 knots
Maximum sustained winds 65 knots gusting to 80 knots
Winds of 34 knots or higher occur within 70 to 170 miles of the centre
Winds of 64 knots or higher occur within 20 to 35 miles of the centre
Threatened landmasses NONE
Maximum significant wave height 27  feet
Next warning from JTWC at 2100 GMT

Noru is moving southwest. The storm will maintain current intensity before restrengthening to 75 knots.

TYPHOON Nesat / 11W
Warning 11 from JTWC at 1500 GMT
Position 21.3N 124.4E
Location 278 miles SE of Taipei, Taiwan
Movement 310° (NW) at 11 knots
Maximum sustained winds 70 knots gusting to 85 knots
Winds of 34 knots or higher occur within 100 to 160 miles of the centre
Winds of 64 knots or higher occur within 20 to 30 miles of the centre
Threatened landmasses Taiwan, China
Maximum significant wave height 26 feet
Next warning from JTWC at 2100 GMT

Nesat will move northwest whilst intensifying. The system will peak at 80 knots prior to approaching Taiwan after 24 hours, and making final landfall in China the day after.

Tropical depression 12W
Warning 02 from JTWC at 1500 GMT
Position 18.6N 115.9E
Location 242 miles SSE of Hong Kong
Movement 210° (SSW) at 7 knots
Maximum sustained winds 30 knots gusting to 40 knots
Threatened landmasses Taiwan, China
Maximum significant wave height 9 feet
Next warning from JTWC at 2100 GMT

12W will start to move northeast, through the Taiwan Strait and into mainland China south of Shanghai. The system will eventually merge with 11W.

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