Rainfall Warning Update – Thunder Bay – March 13, 2019

Local Weather Update

THUNDER BAY – WEATHER – Northwestern Ontario is in the sights of a large winter storm system. The Colorado Low is expected to track over the region leaving snow in the Kenora and Dryden regions, and heavy rain in the English River to Thunder Bay regions.

Rainfall warning in effect for:

  • City of Thunder Bay

Significant rainfall, mild temperatures and melting snow, is expected this evening through Thursday evening.

Rain, heavy at times, is forecast to begin this evening. With temperatures hovering just above the freezing mark, a brief period of freezing rain is possible. However, temperatures will slowly rise tonight ensuring only rain by Thursday morning. Rainfall amounts in the 20 to 30 mm range are expected by the time the rain transitions to snow Thursday night. The heaviest rainfall amounts are likely near the north shore of Lake Superior through this period.

The heavy rain will combine with mild temperatures in the high single digits to result in potentially significant snowmelt and localized ponding on streets and other low lying areas.