Teddy Becomes Extratropical

191 

WTNT35 KNHC 222335

TCPAT5

BULLETIN

Post-Tropical Cyclone Teddy Intermediate Advisory Number 42A

NWS National Hurricane Center Miami FL       AL202020

800 PM AST Tue Sep 22 2020

...POST-TROPICAL CYCLONE TEDDY HEADING TOWARD THE NOVA SCOTIA 

COAST...

...DESTRUCTIVE WAVES, HEAVY RAIN AND STRONG WINDS ARE EXPECTED FOR 

PORTIONS OF NOVA SCOTIA TONIGHT THROUGH WEDNESDAY...

SUMMARY OF 800 PM AST...0000 UTC...INFORMATION

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LOCATION...41.9N 64.2W

ABOUT 190 MI...305 KM S OF HALIFAX NOVA SCOTIA

ABOUT 465 MI...750 KM SSW OF PORT AUX BASQUES NEWFOUNDLAND

MAXIMUM SUSTAINED WINDS...85 MPH...140 KM/H

PRESENT MOVEMENT...N OR 360 DEGREES AT 18 MPH...29 KM/H

MINIMUM CENTRAL PRESSURE...955 MB...28.20 INCHES

WATCHES AND WARNINGS

--------------------

CHANGES WITH THIS ADVISORY:

None.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

A Tropical Storm Warning is in effect for...

* South coast of Nova Scotia from Digby to Meat Cove

* Port aux Basques to Francois Newfoundland

A Tropical Storm Watch is in effect for...

* Meat Cove to Tidnish Nova Scotia

* North of Digby to Fort Lawrence Nova Scotia

* Magdalen Islands Quebec

* Prince Edward Island

A Tropical Storm Warning means that tropical storm conditions are

expected within the warning area.

A Tropical Storm Watch means that tropical storm conditions are

possible within the watch area.

Interests elsewhere in Atlantic Canada should closely monitor the

progress of Teddy.  

For storm information specific to your area, please monitor

products issued by your national meteorological service.

DISCUSSION AND OUTLOOK

----------------------

At 800 PM AST (0000 UTC), the center of Post-Tropical Cyclone Teddy 

was located near latitude 41.9 North, longitude 64.2 West. Teddy is 

moving toward the north near 18 mph (29 km/h), and a turn toward the

north-northeast is expected by early Wednesday.  On the forecast

track, the center will move over eastern Nova Scotia on Wednesday,

and then near or over Newfoundland by Wednesday night, and be east

of Labrador on Thursday.

Air Force Reserve hurricane hunters indicate that the maximum 

sustained winds have decreased to near 85 mph (140 km/h) with 

higher gusts.  Although further weakening is likely tonight and 

Wednesday, Teddy should be a strong post-tropical cyclone when it 

moves near and over Nova Scotia.  A weather station at Brier Island 

recently reported a sustained wind of 40 mph (65 km/h), and a gust 

of 51 mph (81 km/h).

Teddy is an extremely large post-tropical cyclone. Hurricane-force 

winds extend outward up to 125 miles (205 km) from the center and

tropical-storm-force winds extend outward up to 540 miles (870 km).

Buoy 44150, located about 60 n mi north of the center, recently

reported a significant wave height of 36 ft (11 m).

The estimated minimum central pressure is 955 mb (28.20 inches).

HAZARDS AFFECTING LAND

----------------------

Key messages for Teddy can be found in the Tropical Cyclone

Discussion under AWIPS header MIATCDAT5 and WMO header WTNT45 KNHC

and on the web at www.hurricanes.gov/text/MIATCDAT5.shtml.

STORM SURGE:  A dangerous storm surge is expected to produce

significant coastal flooding near and to the east of where the

center makes landfall in Nova Scotia.  Near the coast, the surge

will be accompanied by very large and destructive waves.

SURF:  Large swells generated by Teddy are affecting Bermuda, the

Lesser Antilles, the Greater Antilles, the Bahamas, the east coast

of the United States, and Atlantic Canada. These swells are likely

to cause life-threatening surf and rip current conditions.  Please

consult products from your local weather office.

WIND:  Tropical storm conditions are occurring in the Nova Scotia

warning area now. Tropical storm conditions could begin in the

watch areas tonight or early Wednesday.  Tropical storm conditions

are expected to begin in the Newfoundland warning area on Wednesday

afternoon.

RAINFALL: Through Thursday, Teddy is expected to produce rainfall

accumulations of 2 to 4 inches (50 to 100 mm) with isolated totals

of 6 inches (150 mm) across sections of Atlantic Canada.

NEXT ADVISORY

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Next complete advisory at 1100 PM AST.

$$

Forecaster Roberts