27 August 2026 - bulletin 590

Issued at 0950 GMT
Latest warnings for 01C, 17W and 20W
Final warning for 09E
Disturbance update

EASTERN PACIFIC OCEAN
Tropical storm Iselle / 09E
Warning 15 from NHC at 0300 GMT
Position 23.0N 125.9W
Location 1015 miles W of the southern tip of Baja California
Movement 300° (WNW) at 8 knots
Maximum sustained winds 30 knots gusting to 40 knots
Minimum central pressure 1002 mbar
Threatened landmasses NONE
FINAL WARNING

Mexican warnings

CENTRAL PACIFIC OCEAN
Tropical storm Lala / 01C
Warning 60 from CPHC at 0900 GMT
Position 37.0N 178.3W
Location 595 miles N of Kure Atoll
Movement 360° (N) at 5 knots
Maximum sustained winds 40 knots gusting to 50 knots
Winds of 34 knots or higher occur within 125 miles of the centre
Threatened landmasses NONE
Minimum central pressure 999 mbar 
Next warning from CPHC at 1500 GMT

NORTHWESTERN PACIFIC OCEAN
TYPHOON Saudel / 17W
Warning 36 from JTWC at 0900 GMT
Position 28.4N 124.2E
Location 245 miles NE of Taipei, Taiwan
Movement 250° (WSW) at 6 knots
Maximum sustained winds 80 knots gusting to 100 knots
Winds of 34 knots or higher occur within 130 to 145 miles of the centre
Winds of 64 knots or higher occur within 15 to 50 miles of the centre
Threatened landmasses China
Minimum central pressure 962 mbar 
Maximum significant wave height 30 feet
Next warning from JTWC at 1500 GMT

Tropical storm 20W
Warning 05 from JTWC at 0900 GMT
Position 16.7N 162.3E
Location 291 miles WSW of Wake Island
Movement 095° (E) at 9 knots
Maximum sustained winds 35 knots gusting to 45 knots
Winds of 34 knots or higher occur within 40 miles of the centre
Threatened landmasses NONE
Minimum central pressure 1000 mbar 
Maximum significant wave height 14 feet
Next warning from JTWC at 1500 GMT

Tropical storm Etau / 21W
Warning 02 from JTWC at 0900 GMT
Position 21.2N 168.0E
Location 139 miles NE of Wake Island
Movement 020° (NNE) at 8 knots
Maximum sustained winds 40 knots gusting to 50 knots
Winds of 34 knots or higher occur within 40 to 80 miles of the centre
Threatened landmasses NONE
Minimum central pressure 998 mbar 
Maximum significant wave height 14 feet
Next warning from JTWC at 1500 GMT

TROPICAL DISTURBANCE UPDATE
NORTHERN ATLANTIC OCEAN
Update from NHC at 0600 GMT
System 96L
Position 13.4N 35.3W
Minimum central pressure 1007 mbar
Likelihood of tropical cyclone formation within 48 hours is HIGH (70%)
Likelihood of tropical cyclone formation within 7 days is HIGH (70%)

EASTERN PACIFIC OCEAN
Update from NHC at 0600 GMT
System No Invest Assigned
Position 15N 110W
Likelihood of tropical cyclone formation within 48 hours is NIL
Likelihood of tropical cyclone formation within 7 days is HIGH (80%)

System 93E
Position 9.5N 109.7W
Minimum central pressure 1006 mbar
Likelihood of tropical cyclone formation within 48 hours is HIGH (90%)
Likelihood of tropical cyclone formation within 7 days is HIGH (90%)

System 94E
Position 10.9N 134.8W
Likelihood of tropical cyclone formation within 48 hours is MEDIUM (60%)
Likelihood of tropical cyclone formation within 7 days is HIGH (80%)

CENTRAL PACIFIC OCEAN

Update from CPHC at 0600 GMT
System No Invest Assigned 
Position 12N 165W
Likelihood of tropical cyclone formation within 48 hours is NIL
Likelihood of tropical cyclone formation within 7 days is LOW (20%)

NORTHWESTERN PACIFIC OCEAN
Update from JTWC at 0300 GMT

System 91W is now 21W

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