Atlantic Canada Weather Blog: Convective Outlook Valid for Today, Tonight and Tomorrow

Regional Impacts

Today:

NL/Lab: Risk of thundershowers with small hail and strong wind gusts.

Maritimes/NL: None

Tonight:

Lab: Risk of thundershowers with small hail and strong wind gusts early this evening.

Maritimes/NL: None

Tomorrow:

NL/Lab: Risk of thundershowers with small hail and strong wind gusts.

Maritimes: None

Convective Discussion

A weak trough over eastern Newfoundland and associated cold pool aloft has triggered a few thunderstorms producing small hail this morning over the Avalon Peninsula and this may continue into the early afternoon as the trough moves eastward. Another weak trough and destabilization from surface based heating will aid in the triggering of non-severe thundershowers across western Labrador this afternoon. This feature will then move southeastward on Saturday. Daytime heating and this trough will help trigger non-severe thundershowers over southeastern Labrador and across Newfoundland tomorrow afternoon. Overall, precipitable water is low to moderate and the CAPE in realized could reach 300 J/kg and effective shear are low to moderate, but freezing levels area low, thus some stronger showers may have small hail and with somewhat inverted V profiles, locally strong wind gusts are also possible.

Thunderstorm Outlook for TODAY