25 May 2018 - bulletin 357

Updated at 1540 GMT
Latest warning for 02A
First warning for 01L
Disturbance update


NORTHERN INDIAN OCEAN
Tropical cyclone Mekunu / 02A
Warning 15 from JTWC at 1500 GMT
Position 16.4N 54.3E
Location 38 miles SSE of Salalah, Oman
Movement 340° (NNW) at 8 knots
Maximum sustained winds 100 knots gusting to 125 knots
Winds of 34 knots or higher occur within 110 to 175 miles of the centre
Winds of 64 knots or higher occur within 30 to 50 miles of the centre
Threatened landmasses Yemen, Oman
Maximum significant wave height 32 feet
Next warning from JTWC at 2100 GMT

Mekunu will make landfall near Salalah, Oman within the next few hours, and is expected to dissipate inland.


NORTHERN ATLANTIC OCEAN
Sub-tropical storm Alberto / 01L
Warning 01 from NHC at 1500 GMT
Position 19.7N 86.8W
Location 55 miles S of Cozumel, Mexico
Movement 020° (NNE) at 5 knots
Maximum sustained winds 35 knots gusting to 45 knots
Winds of 34 knots or higher occur within 115 miles of the centre
Threatened landmasses Yucatan peninsula, Cuba, Florida, NE Gulf Coast
Minimum central pressure 1005 mbar
Next warning from NHC at 1800 GMT

Alberto has formed off the Yucatan peninsula, and will move into the Gulf of Mexico. After making landfall, the system will proceed to dump large amounts of rain over the southeastern USA.

Regional warnings
A tropical storm watch is in force from Tulum to Cabo Catoche, Mexico, and for the Cuban province of Pinar del Rio
Rainfall totals of 10 to 15 inches, locally up to 25 inches, are expected over northeastern Yucatan peninsula and western Cuba. Life-threatening mudslides and flash floods are to be expected. The Florida Keys and southern and southwestern Florida can expect 4 to 8, locally up to 12 inches.

TROPICAL DISTURBANCE UPDATE
NORTHERN ATLANTIC OCEAN
Update from NHC at 1500 GMT
System 90L is now 01L

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