4 August 2017 - bulletin 451

Updated at 1515 GMT
Latest warnings for 07W and 13W
First warning for 11E
Disturbance update



NORTHWESTERN PACIFIC OCEAN
TYPHOON Noru / 07W
Warning 60 from JTWC at 1500 GMT
Position 29.0N 130.6E
Location 218 miles NE of Kadena AB, Okinawa
Movement 305° (NW) at 5 knots
Maximum sustained winds 75 knots gusting to 90 knots
Winds of 34 knots or higher occur within 90 to 120 miles of the centre
Winds of 64 knots or higher occur within 35 miles of the centre
Threatened landmasses Kyushu, Japan
Maximum significant wave height 34 feet
Next warning from JTWC at 2100 GMT

Noru is moving northwest. The storm's intensity will gradually increase to 90 knots over the next day or so. The storm will make a sharp turn northeast to make landfall into Kyushu on August 6th. Noru will then rapidly weaken as it tracks into the Sea of Japan.

Tropical storm Nalgae / 13W
Warning 15 from JTWC at 1500 GMT
Position 29.8N 162.4E
Location 561 miles NE of Minami Tori Shima
Movement 350° (N) at 9 knots
Maximum sustained winds 40 knots gusting to 50 knots
Winds of 34 knots or higher occur within 55 to 140 miles of the centre
Threatened landmasses NONE
Maximum significant wave height 14 feet
Next warning from JTWC at 2100 GMT

Nalgae is moving north. The system will maintain current intensity before becoming extra-tropical.

EASTERN PACIFIC OCEAN

Tropical depression 11E
Warning 01 from NHC at 1500 GMT
Position 17.7N 109.2W
Location 335 miles WSW of Manzanillo, Mexico
Movement 300° (WNW) at 13 knots
Maximum sustained winds 25 knots gusting to 35 knots
Minimum central pressure 1009 mbar
Threatened landmasses NONE
Next warning from NHC at 2100 GMT

11W has formed and will move westnorthwest. The system will not intensify, and is expected to dissipate within a day or two.

TROPICAL DISTURBANCE UPDATE
EASTERN PACIFIC OCEAN
Update from NHC at 1500 GMT
System 91E is now 11E

NORTHWESTERN PACIFIC OCEAN
Update from JTWC at 0600 GMT
System 98W
Position 28.3N 174.2E
Location 440 miles W of Midway Island
Likelihood of tropical cyclone formation within 24 hours is LOW 

NORTHERN ATLANTIC OCEAN
Update from NHC at 0600 GMT
System 99L
Position 9.9N 22.7W
Likelihood of tropical cyclone formation within 48 hours is MEDIUM (40%) 
Likelihood of tropical cyclone formation within 5 days is HIGH (80%)  

System 90L
Position 12.3N 67.3W
Likelihood of tropical cyclone formation within 48 hours is LOW (20%) 
Likelihood of tropical cyclone formation within 5 days is MEDIUM (50%)

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