Nova Scotia

Incoming storm to bring significant rain then rapid freeze to Nova Scotia

An incoming storm system is going to bring rain followed by an icy mess to Nova Scotia.

The system, which is still developing across the U.S. plains, will arrive in the province on Friday afternoon, tracking in from west to east.

While we may see a few flakes of snow and some patchy freezing rain on the northern edge of the storm on Friday evening, this will primarily be a rainmaker for Nova Scotia, with some significant totals likely on Friday night and into Saturday.

The most significant rain is expected to fall across central and eastern areas where amounts near 50 millimetres are possible. (Ryan Snoddon/CBC)


Western areas are on tap to see rainfall totals in the 15 to 30 millimetres range, with higher totals ranging from 30 to 50 millimetres looking most likely for southern and eastern regions of the province, including the South Shore, Halifax, Truro, Pictou, Antigonish, Eastern Shore and Cape Breton regions. Local amounts could exceed 50 millimetres in some areas. 

Unfortunately the most significant rain will be falling on areas which were hit hardest by the snow earlier this month.

Forecast model map showing rain across Nova Scotia on Saturday morning.
Heavy rain will track in through Friday night, before tapering off from west to east throughout the day on Saturday. (Ryan Snoddon/CBC)


The southerly winds will also be howling with this system, with widespread gusts in the 50 to 60 km/h range, and stronger 70 to 90 km/h gusts possible for eastern areas on Friday night and early Saturday. As the southerly winds bump temperatures into the mid single digits, further snow melt will follow.

If you can, prepare your property ahead of time by making sure the rain and melting snow has an exit route because more precipitation is expected after the storm.  

A parked lot in Antigonish flooded during a heavy rain event in February 2019.
Significant rainfall will bring the risk of localized flooding. This parking lot in Antigonish flooded during a heavy rain event in February 2019. (Town of Antigonish)

Rapid freeze

As the system departs on Saturday, the winds will shift to northwest and temperatures will plummet throughout the late afternoon and evening hours. We’ll see a mix of freezing rain, ice pellets and light snow across eastern areas and Cape Breton with some light accumulation possible.

More importantly, as temperatures drop any slush and standing water will freeze solid by the time we get to Sunday morning. If you are traveling late Saturday or early on Sunday, be extra cautious as untreated surfaces will be icy. 

Map shows temperatures will be in the minus -10 to -15 range for Nova Scotia by Sunday morning.
Temperatures will be in the minus –10 to -15 range for most of the province by Sunday morning leading to icy conditions after the rain. (Ryan Snoddon/CBC)

 
Temperatures will remain below the freezing mark on Sunday afternoon, which means the ice will be sticking around.

The good news is, temperatures are expected to rise again by the middle of next week as we say goodbye to February.

In fact, there’s strong agreement that Nova Scotia will see warmer-than-average temperatures for the first week of March.

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