Hot and humid conditions persist across much of Atlantic Canada this week as a tropical pattern descends over the region. Parts of the Maritimes continue to deal with the remnants of post-tropical storm Henri through Tuesday, which could bring a risk for scattered showers and thunderstorms to the region. Some of the rainfall could be heavy at times, prompting special weather statements across western and northern New Brunswick. The warmth and humidity will persist through the end of the week, with daytime highs reaching 30°C and a humidex in the upper 30s. More on Henri’s remnants and beyond, below.
TUESDAY: HUMIDITY RISES AS REMNANTS OF HENRI FUEL HEAVY RAIN
Tropical Storm Henri brought flooding rains and gusty winds to New England when it made landfall in Rhode Island on Sunday morning. The system quickly wound down over land, degenerating into a remnant low by Monday night.
While the system is no longer a tropical cyclone, Henri’s remnant moisture will hang around in the atmosphere over the Maritimes and fuel a risk for scattered showers and thunderstorms through the day on Tuesday.
A deep reserve of tropical moisture throughout the atmosphere could allow these showers and thunderstorms to produce heavy downpours at times.
Widespread rainfall totals of 5-20 mm are possible across Atlantic Canada, with amounts of 20-30 mm possible in parts of New Brunswick and western Newfoundland. A special weather statement has been issued for western and northern New Brunswick, warning of the heavy rainfall through the first half of Tuesday.
Temperatures will also remain quite toasty across Atlantic Canada, with daytime highs nudging up into the mid to upper-20s for most and lower 30s possible in parts of the Maritimes.
Humidex values will make things feel closer to the upper 30s.
LOOK AHEAD: NO MAJOR SYSTEMS IN SIGHT, BUT A CHANCE OF STORMS
Conditions should remain warm and humid for most of the Maritimes through the end of the week.
A threat for showers and thunderstorms will surface in Atlantic Canada later in the week, along a weak front trailing south from a system that will track from northern Quebec to Labrador. However, no major systems are expected across the region this week, with a cooler weekend in store, especially for Newfoundland.
Check back for the latest forecast across Atlantic Canada.