UPDATE: 11:27 a.m. Environment Canada officially ends rainfall warning for Thunder Bay
The deluge that hit Thunder Bay Monday night shattered the all-time record for a single-day rainfall in the month of November.
Environment Canada recorded 80 to 85 millimetres of rain yesterday at its monitoring stations at Thunder Bay International Airport.
The previous single-day record for November was 63 millimetres, set on November 21, 1973.
Meteorologist Jeff Coulson said that over a 27-to-30 hour period from 5:00 AM yesterday through this morning, the monitoring stations at the airport recorded between 90 and 100 millimetres of rain.
In an interview with tbnewswatch.com late this morning, Coulson said the airport appears to have been hit particularly hard compared with some other locations around Thunder Bay.
“In the last 24 hours or so at sites around the city … they’re more in the 50-to-60 millimetre range.” Environment Canada received that data from volunteer observation sites situated south of the airport as well as north of the city.
One other long-standing rainfall record seems likely to fall but that still has to be verified. “We are also in record territory for the wettest month of November ever…the month of November with the most rainfall,” Coulson noted.
The current record is just under 113 mm and was set 69 years ago. Subject to confirmation, Coulson expects the total rainfall for the current month will come in at over 120 mm.
