23 July 2017 - bulletin 416

Updated at 2140 GMT
Latest warnings for 07E, 09E, 10E, 07W, 08W and 09W


EASTERN PACIFIC OCEAN
Tropical storm Greg / 07E
Warning 26 from NHC at 2100 GMT
Position 14.4N 130.1W
Location 1445 miles WSW of the southern tip of Baja California, Mexico
Movement 270° (W) at 12 knots
Maximum sustained winds 45 knots gusting to 55 knots
Winds of 34 knots or higher occur within 105 miles of the centre
Minimum central pressure: 1001 mbar
Threatened landmasses NONE
Next warning from NHC at 0300 GMT

Greg will continue to move west and is expected to slowly weaken after tomorrow. The storm is expected to dissipate after three days, near 140W.

Tropical storm Hilary / 09E
Warning 10 from NHC at 2100 GMT
Position 13.2N 102.9W
Location 410 miles SSE of Manzanillo, Mexico
Movement 295° (WNW) at 8 knots
Maximum sustained winds 50 knots gusting to 65 knots
Winds of 34 knots or higher occur within 80 miles of the centre
Minimum central pressure: 999 mbar
Threatened landmasses NONE
Next warning from NHC at 0300 GMT

Hilary will move generally westnorthwest. The system will steadily intensify, reaching 105 knots after three days. After that time, a weakening trend will commence. The storm could show some interaction with Irwin (see below) late in the forecast period.

Tropical storm Irwin / 10E
Warning 06 from NHC at 2100 GMT
Position 14.9N 116.6W
Location 705 miles SW of the southern tip of Baja California, Mexico
Movement 270° (W) at 7 knots
Maximum sustained winds 40 knots gusting to 50 knots
Winds of 34 knots or higher occur within 80 miles to the north of the centre
Minimum central pressure: 1003 mbar
Threatened landmasses NONE
Next warning from NHC at 0300 GMT

Irwin will move west, whilst strengthening to 65 knots. There is a possibility of interaction with Hilary towards the end of the 5-day forecast period.

NORTHWESTERN PACIFIC OCEAN

TYPHOON Noru / 07W
Warning 13 from JTWC at 2100 GMT
Position 27.5N 151.5E
Location 240 miles NW of Minami Tori Shima, Japan
Movement 170° (S) at 5 knots
Maximum sustained winds 85 knots gusting to 105 knots
Winds of 34 knots or higher occur within 75 to 90 miles of the centre
Winds of 64 knots or higher occur within 15 miles of the centre
Threatened landmasses NONE
Maximum significant wave height 23 feet
Next warning from JTWC at 0300 GMT

Noru is turning round on its loop motion that will occur over the next few days. The system will intensify to 110 knots, before weakening as it once more travels southwest. A limited interaction with Kulap is anticipated. The storm could reintensify after 4 days, possibly deepening to less than 890 mbar.

Tropical storm Sonca / 08W
At time of posting, the 2100 GMT warning for 08W had not yet been published
Warning 11 from JTWC at 1500 GMT
Position 17.4N 111.6E
Location 207 miles ENE of Da Nang, Vietnam
Movement 135° (SE) at 3 knots
Maximum sustained winds 35 knots gusting to 45 knots
Winds of 34 knots or higher occur within 30 to 35 miles of the centre
Threatened landmasses Hainan Island
Maximum significant wave height 12 feet
Next warning from JTWC at 2100 GMT

Sonca has slowed to a crawl, but will contineu to approach Hainan Island. After making landfall, the system will dissipate there. 

Tropical storm Kulap / 09W
Warning 11 from JTWC at 2100 GMT
Position 31.7N 164.1E
Location 699 miles NE of Minami Tori Shima, Japan
Movement 290° (WNW) at 10 knots
Maximum sustained winds 40 knots gusting to 50 knots
Winds of 34 knots or higher occur within 0 to 125 miles of the centre
Threatened landmasses NONE
Maximum significant wave height 16 feet
Next warning from JTWC at 0300 GMT

Kulap will move west. An interaction with Noru will commence after today, which will lead to the system's demise.

TROPICAL DISTURBANCE UPDATE
NORTHWESTERN PACIFIC OCEAN
Update from JTWC at 0600 GMT
System 99W
Position 11.2N 128.8E
Location 410 miles NW of Palau
Likelihood of tropical cyclone formation within 24 hours is MEDIUM

System 91W
Position 7.4N 135.5E
Location 70 miles E of Palau
Likelihood of tropical cyclone formation within 24 hours is LOW

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