[3] On August 26, the National Hurricane Center (NHC) was monitoring a tropical wave that was going to emerge off the coast of West Africa.

[4] The tropical wave exited Africa on August 30, surrounded by an area of low pressure that had generally westward movement.

[1] In the following 24 hours, the system's deep convection increased enough for it to be designated as a tropical depression at 18:00 on August 31, while it was situated 320 miles (520 kilometres) south-southeast of the Cape Verde Islands.

[1] On the afternoon of September 4, Larry underwent an eyewall replacement cycle, and decreased slightly in intensity, though remaining at Category 3 strength.

[1] Overnight, Larry had also strengthened back to 125 mph (205 km/h), its second peak intensity, located 835 miles (1,345 kilometres) east of the Leeward Islands.

[1] Turning north-northwestward, late on 9 September, Larry reached its westernmost point 150 miles (240 kilometres) east-northeast of Bermuda.

[1] Early on September 10, Larry started moving north, and began to accelerate due to the presence of a mid-latitude trough.

[nb 1][1] By 00:00 UTC on September 11, Larry's speed had increased to 45 mph (75 km/h) as it approached the southeastern coast of Newfoundland, moving over Marticut Island.

[1] At 03:30 UTC on September 11, Larry made landfall in Newfoundland as a Category 1 hurricane with sustained winds of 80 mph (130 km/h) and a minimum central pressure of 960 millibars (28 inHg).

[17] Although Larry remained far away from the United States and its territories, large swells from the hurricane reached the East Coast, as well as Puerto Rico and the U.S. Virgin Islands.

[22][23][24] The waves reached heights of 3.6 m (12 ft) in Argentia and the tide gauge showed a maximum water level about 150 centimeters higher than normal.

[1][23] The performance tent near Quidi Vidi Lake, set up for the Iceberg Alley concert festival, suffered significant damage, and a show scheduled for September 10 was cancelled in advance of Larry.

The Newfoundland and Labrador Department of Transportation and Infrastructure has asked motorists to avoid the area of Highway 90 in the southern Avalon Peninsula because a section was damaged.

[31] Over 90,000 salmon at an aquaculture facility off the south coast of Newfoundland died after concentrations of dissolved oxygen fell significantly while Larry passed over the area.

[1][2] In Greenland, the snowfall forecast for ex-Larry, one of the few storms from the remnants of a tropical cyclone to pass so far north, was up to 4 feet of snow (120 cm) with some places along the coast receiving a rainfall equivalent.

Wind and snow caused a blizzard at Summit Camp, a weather station located on the ice sheet over 10,000 ft (3,000 m) above sea level.