Active AlertsSt. John's, NL

Significant rainfall is expected.

Locations: the Avalon Peninsula.

Potential rainfall: 20 to 40 mm, with locally higher amounts possible.

Potential rainfall rates: 5 to 15 mm per hour.

Time span: early this evening until Wednesday morning.

Remarks: A developing weather system is expected to bring a period of significant rainfall. A moisture-laden tropical air mass will contribute to enhanced rainfall. There is some uncertainty as to where the highest rainfall amounts will occur, but the potential exists for significant totals over some locations.

Water pooling on roads may make travel difficult in some locations. Localized flooding may occur in low-lying areas.

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Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to NLstorm@ec.gc.ca or post reports on social media using #NLwx.