4 August 2017 - bulletin 450

Updated at 1000 GMT
Latest warnings for 07W and 13W
Disturbance update



NORTHWESTERN PACIFIC OCEAN
TYPHOON Noru / 07W
Warning 59 from JTWC at 0900 GMT
Position 28.7N 131.1E
Location 220 miles NE of Kadena AB, Okinawa
Movement 295° (WNW) at 5 knots
Maximum sustained winds 75 knots gusting to 90 knots
Winds of 34 knots or higher occur within 125 to 160 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 1500 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 14 from JTWC at 0900 GMT
Position 28.9N 162.5E
Location 536 miles NE of Minami Tori Shima
Movement 330° (NNW) at 6 knots
Maximum sustained winds 40 knots gusting to 50 knots
Winds of 34 knots or higher occur within 45 to 130 miles of the centre
Threatened landmasses NONE
Maximum significant wave height 14 feet
Next warning from JTWC at 1500 GMT

Nalgae is moving northwest. The system will intensify to 45 knots before becoming extra-tropical.

TROPICAL DISTURBANCE UPDATE
EASTERN PACIFIC OCEAN
Update from NHC at 0600 GMT
System 91E
Position 15.9N 105.5W
Likelihood of tropical cyclone formation within 48 hours is MEDIUM (60%)
Likelihood of tropical cyclone formation within 5 days is MEDIUM (60%)

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 1800 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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