Extreme heat fuels strong thunderstorm risk over parts of the Maritimes – The Weather Network

Record-breaking humidex values are possible across the Maritimes, on Wednesday for New Brunswick and on Thursday for Nova Scotia and Prince Edward Island.

June humidex records being challenged:

• Fredericton: 43.5 (June 17, 1994)

• Moncton: 40.6 (June 28, 1969)

• Halifax: 40.2 (June 25, 2005)

• Charlottetown: 39.7 (June 24, 1975)

Temperatures are expected to be in the low-to-mid 30s but the humidex values will make it feel closer to the low-to-mid 40s. Very little relief will be felt overnight as temperatures will stay in the low- or mid-20s.

Temperatures will also be quite high in Newfoundland, with central and northern areas reaching the 30-degree mark and humidex values just hitting 40. St. John’s, N.L., has a forecast of 27°C for Thursday.

Some of the warmest June nights on record are being challenged, as well, including several locales in New Brunswick (Bathurst, Fredericton and Woodstock), Nova Scotia (Halifax and Greenwood), P.E.I. (Charlottetown) and Newfoundland (Gander).

The heat and humidity will also fuel daily thunderstorm risks, so people will need to be weather-aware.