1. Although Dorian has lost tropical cyclone characteristics, it will have significant impacts in portions of eastern Canada tonight and Sunday. Dangerous storm surge impacts are likely in portions of the Gulf of St. Lawrence, southwestern Newfoundland and eastern Nova Scotia. Hurricane-force winds are also likely in Nova Scotia, Prince Edward Island and Newfoundland later today and tonight. Refer to information from the Canadian Hurricane Centre for more information on these hazards.

WHAT'S NEW:

None.

SUMMARY OF ALERTS:

A Hurricane Warning is in effect for...
- Eastern Nova Scotia from Lower East Pubnico to Brule
- Western Newfoundland from Indian Harbour to Hawke's Bay

A Hurricane Watch is in effect for...
- Prince Edward Island
- Magdalen Islands

A Tropical Storm Warning is in effect for...
- East of Bar Harbor to Eastport ME
- Prince Edward Island
- Southwestern Nova Scotia from Avonport to north of Lower East Pubnico
- Fundy National Park to Shediac
- Stone's Cove to Indian Harbour
- Hawke's Bay to Fogo Island
- Mutton Bay to Mary's Harbour

A Hurricane Warning means that hurricane conditions are expected somewhere within the warning area. Preparations to protect life and property should be rushed to completion.

A Tropical Storm Warning means that tropical storm conditions are expected within the warning area in this case within the next 12 hours.

A Hurricane Watch means that hurricane conditions are possible within the watch area. For storm information specific to your area in the United States, including possible inland watches and warnings, please monitor products issued by your local National Weather Service forecast office. For storm information specific to your area outside of the United States, please monitor products issued by your national meteorological service.

WIND: [TOP] Tropical storm conditions are spreading across much of Nova Scotia, and hurricane conditions are expected to spread over portions of Nova Scotia during the next few hours. Hurricane conditions are also expected elsewhere in the Hurricane Warning area later tonight. Hurricane conditions are also possible in the Hurricane Watch area tonight. Tropical storm conditions are expected in the Tropical Storm Warning area tonight and Sunday.

Tropical storm conditions are expected in the Tropical Storm Warning area in Maine during the next few hours.

STORM SURGE: [TOP] A dangerous storm surge is likely in the Gulf of St. Lawrence, the Southwest Coast of Newfoundland, and Eastern Nova Scotia.

RAINFALL: [TOP] Dorian is expected to produce the following rainfall totals through Saturday Night:

Far eastern Maine...1 to 3 inches. Nova Scotia...3 to 5 inches, isolated 7 inches. New Brunswick and Prince Edward Island...2 to 4 inches Newfoundland and far eastern Quebec...1 to 2 inches

These rainfall amounts could result in flash flooding.

SURF: [TOP] Large swells are increasing along the coast in Atlantic Canada, and they will continue to affect that area during the next few days. Swells along the mid-Atlantic and New England coasts of the U.S. will continue for a couple of more days. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office.

At 500 PM AST (2100 UTC), the center of Post-Tropical Cyclone Dorian was located near latitude 43.9 North, longitude 63.9 West. The post-tropical cyclone is moving toward the northeast near 30 mph (48 km/h), and this general motion is expected to continue for the next 24 hours. After that, a turn toward the east-northeast is expected. On the forecast track, the center of Dorian should cross the coast of Nova Scotia near Halifax during the next few hours, then move across eastern Nova Scotia into the Gulf of St. Lawrence near Prince Edward Island tonight. The center should then pass near or over northern Newfoundland and eastern Labrador late tonight or Sunday morning.

Maximum sustained winds are near 100 mph (155 km/h) with higher gusts. The post-tropical cyclone is expected to weaken during the next couple of days, and it is forecast to drop below hurricane strength by Sunday morning.

Hurricane-force winds extend outward up to 115 miles (185 km) to the south of the center and tropical-storm-force winds extend outward up to 310 miles (500 km). Osbourne Head, Nova Scotia, recently reported sustained winds of 68 mph (109 km/h) and a wind gust of 88 mph (142 km/h).

The estimated minimum central pressure is 953 mb (28.15 inches).

Satellite imagery and surface observations indicate that Dorian has lost tropical cyclone characteristics and is now a hurricane-force extratropical low. The initial intensity is held at 85 kt based mainly on the earlier scatterometer data.

The initial motion is 040/26. Strong mid-latitude southwesterly flow should steer Dorian across Nova Scotia and other portions of eastern Canada during the next 24-30 h. After that, the cyclone should turn east-northeastward over the far north Atlantic, with this motion continuing for the rest of the system's life.

Global model guidance indicates that the post-tropical cyclone should gradually weaken as it moves across eastern Canada, and the new intensity forecast brings the winds below hurricane force by 24 h. Additional weakening should then occur until the storm is absorbed by a large extratropical low to its north.

The National Hurricane Center will continue to issue advisories on Dorian as a post-tropical cyclone until the threat to eastern Canada has ended.