30 July 2017 - bulletin 437

Updated at 2135 GMT
Latest warnings for 09E, 10E, 07W and 12W
Disturbance update


EASTERN PACIFIC OCEAN
Tropical storm Hilary / 09E
Warning 38 from NHC at 2100 GMT
Position 25.0N 127.2W
Location 1100 miles W of the southern tip of Baja California
Movement 300° (WNW) at 12 knots
Maximum sustained winds 35 knots gusting to 45 knots
Winds of 34 knots or higher occur within 60 miles to the north of the centre
Minimum central pressure: 1005 mbar
Threatened landmasses NONE
Next warning from NHC at 0300 GMT

Hilary will move generally westnorthwest and is weakening. The system will likely dissipate later today.

Tropical storm Irwin / 10E

Warning 34 from NHC at 2100 GMT
Position 18.5N 125.6W
Location 1060 miles WSW of the southern tip of Baja California, Mexico
Movement 335° (NNW) at 8 knots
Maximum sustained winds 55 knots gusting to 70 knots
Winds of 34 knots or higher occur within 70 miles of the centre
Minimum central pressure: 996 mbar
Threatened landmasses NONE
Next warning from NHC at 0300 GMT

Irwin is moving north and will gradually weaken as it follows Hilary. The system will likely lose tropical cyclone status within a day or so.

NORTHWESTERN PACIFIC OCEAN

SUPERTYPHOON Noru / 07W
Warning 41 from JTWC at 2100 GMT
Position 22.8N 140.9E
Location 122 miles S of Iwo To
Movement 260° (W) at 5 knots
Maximum sustained winds 140 knots gusting to 170 knots
Winds of 34 knots or higher occur within 120 to 140 miles of the centre
Winds of 64 knots or higher occur within 35 to 40 miles of the centre
Threatened landmasses Iwo To
Maximum significant wave height 45 feet
Next warning from JTWC at 0300 GMT

Noru is moving west and has strengthened explosively from 95 to 140 knots in the last 6 hours. The storm will intensify further, to 145 knots as it turns round, eventually onto a northerly to northwesterly course. By that time, Noru will be weakening gradually. 

Tropical storm Haitang / 12W
Warning 10 from JTWC at 1500 GMT
Position 24.2N 120.1E
Location 94 miles SW of Taipei, Taiwan
Movement 345° (NNW) at 13 knots
Maximum sustained winds 35 knots gusting to 45 knots
Winds of 34 knots or higher occur within 40 to 60 miles of the centre
Threatened landmasses Taiwan, China
Maximum significant wave height 12 feet
Next warning from JTWC at 2100 GMT

Haitang is crossing the Strait of Taiwan to make landfall in mainland China.

TROPICAL DISTURBANCE UPDATE
NORTHERN ATLANTIC OCEAN
Update from NHC at 1200 GMT
System No Invest Assigned
Position 10N 32W
Likelihood of tropical cyclone formation within 48 hours is LOW (0%)
Likelihood of tropical cyclone formation within 5 days is LOW (20%)

System No Invest Assigned (2)
Position 28N 84W
Likelihood of tropical cyclone formation within 48 hours is LOW (10%)
Likelihood of tropical cyclone formation within 5 days is LOW (20%)
 
NORTHWESTERN PACIFIC OCEAN
Update from JTWC at 0600 GMT
System 95W
Position 31.5N 163.9E
Location 720 miles NNW of Wake Island
Likelihood of tropical cyclone formation within 24 hours is LOW

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