Hurricane Klaus (1984) - Meteorological History

Meteorological History

A broad area of low pressure gradually developed over the extreme southeastern Caribbean Sea on November 1. It moved slowly westward and steadily organized. By November 4, the system stalled to the north of Curaçao, which was followed by a turn to the northeast. Convection slowly organized as a surface circulation formed, and on November 5 the system developed into Tropical Depression Fifteen. Initially weak with only 20 mph (32 km/h) winds, the depression steadily organized as it moved northeastward, and a Reconnaissance Aircraft mission confirmed the existence of the cyclone on November 6 as it was located midway between Puerto Rico and the Netherlands Antilles. Late on the 6th, the depression strengthened into Tropical Storm Klaus while located a short distance south of Puerto Rico.

Tropical Storm Klaus continued northeastward, and made landfall on extreme eastern Puerto Rico early on November 7. The storm passed a short distance north of the Lesser Antilles, and became the first tropical cyclone in recorded history to affect the islands from the west. Favorable conditions allowed the storm to continue strengthening, and Klaus attained hurricane status early on November 8. The hurricane accelerated to the northeast, and reached its peak intensity of 90 mph (145 km/h) late on November 8. After maintaining its peak strength for 30 hours, Klaus weakened slightly. Interaction with an upper-level low turned the hurricane westward on November 11, though an approaching trough of low pressure turned Hurricane Klaus to the northeast. Cold air and cooler waters weakened the convection around the center on November 12, and Klaus degenerated to a subtropical storm. It accelerated to the northeast and degenerated to an extratropical storm on November 13 while located about 440 miles (700 km) south-southeast of Cape Race, Newfoundland. Six hours later, it was absorbed by another extratropical system.