New Daily Maximum Temperature Records Set In New Brunswick & Nova Scotia - 08/04/2020

Weather summary

for New Brunswick

issued by Environment Canada

at 4:54 a.m. ADT Wednesday 5 August 2020.

Discussion.

The following area set a daily maximum temperature record on August 

4, 2020: 

Fundy (National Park) Area (Fundy Park (Alma) CS) 

New record of 28.1 

Old record of 27.8 set in 1993 

Records in this area have been kept since 1950 

Note: the temperature record reported here has been derived from a 

selection of historical stations in this geographic area that were 

active during the period of record.

Please note that this summary may contain preliminary or unofficial 

information and does not constitute a complete or final report.

End/ASPC

Weather summary

for Nova Scotia

issued by Environment Canada

at 4:54 a.m. ADT Wednesday 5 August 2020.

Discussion.

The following area set a daily maximum temperature record on August 

4, 2020: 

Kejimkujik (National Park) Area (Kejimkujik 1) 

New record of 31.2 

Old record of 31.0 set in 1988 

Records in this area have been kept since 1966 

Note: the temperature record reported here has been derived from a 

selection of historical stations in this geographic area that were 

active during the period of record.

Please note that this summary may contain preliminary or unofficial 

information and does not constitute a complete or final report.

End/ASPC

Heat Wave Day - 08/03/2020

Heat Wave Day - 08/03/2020

New Brunswick

St. Stephen

Max: 32.2°C

Min: 17.3°C

Maine 

Portland

Max: 91°F/32.8°C*

Min: 70°F/21.1°C

*Denotes a record for the date.

Hurricane Isaias Event Summary, Canadian & Selected New England Data

11:57 AM ADT Wednesday 05 August 2020

Tropical cyclone information statement for:

New Brunswick

Québec - south:

Amqui - Matapédia Valley

Beauce

Charlevoix

Drummondville - Bois-Francs

Eastern Townships

Forillon National Park - Gaspé - Percé

Gaspésie National Park - Murdochville

Kamouraska - Rivière-du-Loup - Trois-Pistoles

Lanaudière

Matane

Mauricie

Metro Montréal - Laval

Montmagny - L'Islet

New Carlisle - Chandler

Québec

Restigouche - Bonaventure

Richelieu Valley - Saint-Hyacinthe

Rimouski - Mont-Joli

Sainte-Anne-des-Monts - Grande-Vallée

Témiscouata

Vaudreuil - Soulanges - Huntingdon

For Post-tropical Storm Isaias.

This is an updated meteorological summary for Post-tropical Storm Isaias. This will be the final information statement for this storm.

1. Full discussion of the event.

Isaias is currently a post-tropical system that impacted much of the Caribbean and the Atlantic Coast of the United States as a Category 1 Hurricane. The storm started developing off the coast of Africa, and reached Tropical Storm status on July 30 as it moved west towards the Caribbean. The next day, Isaias reached hurricane strength with a maximum intensity of 137 kilometres per hour with a central pressure of 997 millibars. The storm impacted North Andros in the Bahamas on August 1 and then weakened to a tropical storm as it moved up along the East Coast of the United States. As it moved towards the Carolinas, it re-intensified to a Category 1 system just before making landfall near Ocean Isle Beach in North Carolina, near midnight on August 3. Isaias then remained inland as it moved up along the coast towards New England as a strong tropical storm. Numerous warnings and watches were issued for the Caribbean, the Bahamas, and much of the East Coast of the United States, including hurricane warnings and watches, and storm surge warnings from the Carolinas south.

On August 4th, Isaias moved through New York into Vermont, then crossed the border into Quebec that evening. While weakening gradually it continued to move northeastward and cross the St. Lawrence River just east of Trois-Rivières. Impacts for Canada were high rainfall amounts, winds gusting to storm force Tuesday evening. There was some possible local flash flooding, with widespread rainfall ahead of the storm in the 30 to 60 millimetre range, and locally reaching over 100 millimetres near Trois-Rivières and west to north of the Montreal area. Wind gradually dropped off during the evening and overnight, except for parts of the St. Lawrence River, where winds of near storm force persisted into the overnight period. Areas around Quebec City saw some wind damage from fallen trees and several thousand were without power Tuesday night.

The storm is weakening as it continues north, where it will merge with a low pressure system and then pass east into Labrador.

2. Summary of rainfall amounts in millimetres in Quebec:

Charlevoix (Massif): 124.7

Trois-Rivières: 90.2

Nicolet: 85.7

Shawinigan: 82.6

Saint-Jean-sur-Richelieu: 69.6

L'Acadie: 65.7

Boloeil: 65.3

Saint-Hyacinthe: 63.9

Saint-Armand: 59.2

Deschambaults: 57.3

Saint-Germain-De-Grantham: 54.6

Lemieux: 53

Ste-Clotilde: 51.0

Quebec/Jean Lesage: 46.6

Sainte-Foy: 46.5

Dollard-Des Ormeaux: 45.2

Montreal (downtown): 45.0

Deux-Montagnes: 45.0

La Tuque: 45

Frelighsburg: 43.4

3. Summary of maximum wind gusts in kilometres per hour in Quebec:

Ile d'Orleans: 91

Beauport: 78

Quebec/Jean Lesage: 69

Ste - Foy University of Laval: 63

Sherbrooke: 63

Iles-aux-Grues: 57

4. Summary of maximum wind gusts in kilometres per hour in New England and Maine:

Quonset Airport: 98

Bradley International Airport: 91

Providence: 87

Boston Airport (Logan): 85

Windham Airport: 83

Portsmouth: 82

Mt. Washington Regional Airport: 78

5. Summary of maximum wind gusts in kilometres per hour in the Gulf of Maine south to Long Island, from buoys C-Man stations:

Station IOSN3: 74

Buoy 44007: 70

Buoy 44037: 67

Buoy 44030: 63

Buoy 44029: 57

Forecaster(s):McArthur/Mercer

Please continue to monitor alerts issued by the Canadian Hurricane Centre and forecasts issued by Environment Canada.

Extratropical Storm Isaias Weakens Over Southern Quebec

000

WTNT34 KNHC 050837

TCPAT4

BULLETIN

Post-Tropical Cyclone Isaias Advisory Number  33

NWS National Hurricane Center Miami FL       AL092020

500 AM EDT Wed Aug 05 2020

...RAIN AND GUSTY WINDS CONTINUE TO SPREAD OVER EASTERN QUEBEC...

...THIS IS THE LAST NHC ADVISORY...

SUMMARY OF 500 AM EDT...0900 UTC...INFORMATION

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

LOCATION...47.5N 71.8W

ABOUT 55 MI...90 KM NNW OF QUEBEC CITY

MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H

PRESENT MOVEMENT...NNE OR 15 DEGREES AT 28 MPH...44 KM/H

MINIMUM CENTRAL PRESSURE...1000 MB...29.53 INCHES

WATCHES AND WARNINGS

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

There are no coastal watches or warnings in effect.

DISCUSSION AND OUTLOOK

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

At 500 AM EDT (0900 UTC), the center of Post-Tropical Cyclone Isaias

was located near latitude 47.5 North, longitude 71.8 West. The

post-tropical cyclone is moving toward the north-northeast near 28

mph (44 km/h), and this general motion is expected with a decrease

in forward speed through tonight.

Maximum sustained winds are near 40 mph (65 km/h) with higher gusts.

Weakening is expected, and the winds are expected to drop below

tropical-storm force this morning.  The post-tropical cyclone is

expected to dissipate over southeastern Canada on Thursday.

Tropical-storm-force winds extend outward up to 140 miles (220 km) 

to the northeast and east of the center primarily over and near 

the St. Lawrence River. 

The estimated minimum central pressure is 1000 mb (29.53 inches).

HAZARDS AFFECTING LAND

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

WIND:  Gale-force winds will continue over and near the St. 

Lawrence River this morning. Gale-force wind gusts are possible 

elsewhere over southeastern Quebec today.  See products issued by 

Environment Canada for more information.

RAINFALL: Rainfall accumulations of 1 to 3 inches are expected along

and near the track of Isaias across southern Quebec.

Even though the rainfall has ended, scattered minor to moderate and

isolated major river flooding is ongoing across portions of the

Mid-Atlantic with most rivers expected to fall below flood stage

by later today.

SURF:  Swells generated by Isaias will affect the coast of the

Northeast United States through this morning. These swells are

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

Please consult products from your local weather office.

NEXT ADVISORY

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

This is the last public advisory issued by the National Hurricane

Center on this system.  Additional information on the post-tropical 

cyclone can be found in products issued by the Canadian Hurricane 

Center at https://weather.gc.ca/hurricane/index_e.html

$$

Forecaster Brown