ALERT Thunder & Rain For Cornwall Ontario Area SEPT 7 2017

CORNWALL ONTARIO – Expect up to 5mm of rain Thursday and Friday in the Cornwall area with potential Thunderstorms starting Thursday!

Lows will drop to about 10c overnight with highs near 20 until the weekend when we’re expecting warmer temps and lots of sunshine!


11:52 AM EDT Thursday 07 September 2017
Weather advisory in effect for:

  • Cornwall – Lancaster
  • Maxville – Alexandria
  • Morrisburg – Long Sault
  • Winchester – Newington

Conditions will be favourable for the development of funnel clouds today.

Scattered thunderstorms are expected this afternoon and early evening across Southern Ontario.

Some of the thunderstorms will bring dime sized hail, wind gusts to 70 km/h and frequent lightning.

Funnel clouds may also make a brief appearance this afternoon in this unseasonably cool and unstable air mass.

Thunderstorms are expected to dissipate this evening.

These types of funnel clouds are generated by weak rotation under rapidly growing clouds or weak thunderstorms. This weak rotation is normally not a danger near the ground. However, there is a chance that this rotation could intensify and become a weak landspout tornado.

Treat any funnel cloud sighting seriously. Should a funnel cloud develop nearby, prepare to take shelter. These funnel clouds usually appear with little or no warning.

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