Larry (Now A Powerful Extratropical Storm) Moves Off Into The North Atlantic

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BULLETIN

Post-Tropical Cyclone Larry Advisory Number  44

NWS National Hurricane Center Miami FL       AL122021

1100 AM AST Sat Sep 11 2021

 

...LARRY IS NOW A POST-TROPICAL CYCLONE OVER THE LABRADOR SEA...

...STILL PRODUCING LARGE SWELLS ACROSS ATLANTIC CANADA AND PORTIONS

OF THE EAST COAST OF THE U.S...

 

SUMMARY OF 1100 AM AST...1500 UTC...INFORMATION

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LOCATION...54.0N 48.2W

ABOUT 550 MI...880 KM NNE OF CAPE RACE NEWFOUNDLAND

ABOUT 1150 MI...1855 KM WSW OF REYKJAVIK ICELAND

MAXIMUM SUSTAINED WINDS...70 MPH...110 KM/H

PRESENT MOVEMENT...NNE OR 30 DEGREES AT 48 MPH...78 KM/H

MINIMUM CENTRAL PRESSURE...963 MB...28.44 INCHES

 

WATCHES AND WARNINGS

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There are no coastal watches or warnings in effect.

 

DISCUSSION AND OUTLOOK

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At 1100 AM AST (1500 UTC), the center of Post-Tropical Cyclone Larry

was located near latitude 54.0 North, longitude 48.2 West. The

post-tropical cyclone is moving toward the north-northeast near 48

mph (78 km/h) and this heading with a decrease in forward speed is 

expected until Larry merges with an extratropical low tonight or 

early Sunday.

 

Maximum sustained winds are near 70 mph (110 km/h) with higher

gusts.  Some slight weakening is possible before Larry merges with 

another extratropical low.

 

Tropical-storm-force winds extend outward up to 310 miles (500 km)

from the center.

 

The estimated minimum central pressure is 963 mb (28.44 inches).

 

HAZARDS AFFECTING LAND

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Key messages for Larry can be found in the Tropical Cyclone

Discussion under AWIPS header MIATCDAT2, WMO header WTNT42 KNHC

and on the web at hurricanes.gov/graphics_at2.shtml?key_messages

 

STORM SURGE:  Water levels will continue to subside in southeastern

Newfoundland today.

 

SURF: Significant swells from Larry will continue affecting portions 

of the east coast of the United States and Atlantic Canada through 

tonight. These swells are likely to cause life-threatening surf and 

rip current conditions.  Please consult products from your local 

weather office.

 

NEXT ADVISORY

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This is the last public advisory issued by the National Hurricane 

Center on Larry.  Additional information on this system can be found 

in High Seas Forecasts issued by the National Weather Service, under 

AWIPS header NFDHSFAT1, WMO header FZNT01 KWBC, and online at 

ocean.weather.gov/shtml/NFDHSFAT1.php

 

$$

Forecaster Cangialosi

 

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Weather summary

for Newfoundland

issued by Environment Canada

at 5:30 p.m. NDT Saturday 11 September 2021.

Discussion.

Hurricane Larry emerged from the tropical Atlantic late last week 

and passed east of Bermuda on Thursday of this week, before 

accelerating northeastward towards Newfoundland. Larry made landfall 

on the western Avalon Peninsula, west of Long Harbour, as a category 

one hurricane around 1:30 A.M. NDT this morning. Larry then quickly 

continued off towards the Labrador Sea where it transitioned into a 

post tropical storm. 

Larry brought strong winds, storm surge, and a short period of 

intense rain to eastern Newfoundland. Impacts included widespread 

power outages with numerous broken trees, power poles and other 

structural damage. Notably, a large outdoor performance tent in St. 

John's suffered extensive damage. Meanwhile, along south and 

southwest facing shorelines of the Burin and Avalon Peninsulas, 

large waves and storm surge caused road washouts and visible damage 

to coastal infrastructure. The tide guage at Argentia broke a record 

that was set on December 25, 1983, with a peak high tide water level 

of 3.65 metres and total storm surge of 1.5 metres. 

The following is a preliminary summary of weather information 

received by Environment and Climate Change Canada as of 5:30 P.M. 

NDT. 

1. Maximum wind gusts in kilometres per hour. 

Cape St. Mary's Lighthouse: 182 * (A) 

Cape Pine Lighthouse: 148 * 

St. John's International Airport: 145 

Cape Race: 144 

Bell Island: 143 * 

Green Island (Fortune Bay): 142 * 

Bay Roberts: 137 * 

Grates Cove: 137 

Long Harbour: 132 * 

Bishop's Cove: 130 * 

Cape Bonavista Lighthouse: 129 * 

Robin Hood Bay (St. John's): 127 * 

St. Mary's: 124 * 

Bonavista: 123 

East White Hills (St. John's): 123 * 

St. John's West: 116 

Salmonier Nature Park: 116 * 

Calpin Cove: 113 * 

St. Lawrence: 95 

(A) Data transmission ceased shortly after midnight at Cape St. 

Mary's. 

2. Rainfall in millimetres. 

Port Rexton: 37.6 * 

Mount Pearl: 35.1 * 

Bonavista: 31.6 

St. Lawrence: 27.5 

Winterland: 26.1 

Harcourt: 25.9 * 

St. John's West: 25.2 

Twillingate: 24.1 

Lethbridge: 23.0 

Salmonier Nature Park: 21.2 * 

St. John's International Airport: 21.0 

3. Summary of storm surge in metres: 

Argentia: storm surge 1.5 (highest tide level 3.65) 

St. Lawrence: storm surge 1.5 (highest tide level 3.64) 

Bonavista: storm surge 0.62 (highest tide level 1.24) 

St. John's: storm surge 0.48 (highest tide level 1.65) 

Port aux Basques: storm surge 0.45 (highest tide level 2.17) 

4. The following areas set a daily maximum temperature record on 

September 10, 2021: 

Daniel's Harbour Area (Daniel's Harbour) 

New record of 25.8 

Old record of 24.4 set in 1948 

Records in this area have been kept since 1946 

Twillingate Area (Twillingate (AUT)) 

New record of 24.4 

Old record of 21.4 set in 2001 

Records in this area have been kept since 1950 

Note: the temperature records reported here have been derived from a 

selection of historical stations in each geographic area that were 

active during the period of record. 

* denotes unofficial observation station.

Please note that this summary may contain preliminary or unofficial 

information and does not constitute a complete or final report.

End/NLWO

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Hurricane Larry Tropical Cyclone Update

NWS National Hurricane Center Miami FL       AL122021

1150 PM AST Fri Sep 10 2021

 

...LARRY MAKES LANDFALL ON NEWFOUNDLAND...

 

Recent satellite, radar and surface data indicate that Larry has 

made landfall in Newfoundland near South East Bight at 1145 PM AST 

(0345 UTC), with maximum sustained winds of 80 mph (130 km/h) and 

an estimated minimum pressure of 960 mb (28.35 inches).

SUMMARY OF 1150 PM AST...0350 UTC...INFORMATION

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LOCATION...47.4N 54.5W

ABOUT 85 MI...135 KM WSW OF ST JOHNS NEWFOUNDLAND

MAXIMUM SUSTAINED WINDS...80 MPH...130 KM/H

PRESENT MOVEMENT...NNE OR 030 DEGREES AT 47 MPH...76 KM/H

MINIMUM CENTRAL PRESSURE...960 MB...28.35 INCHES

 

$$

Forecaster Blake

 

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