Significant snowstorm will impact the Maritimes once again: Tuesday and Wednesday time-frame.
A low pressure system moving near the Eastern Seaboard of the United States will target the Maritimes this upcoming work-week. Current indications are now such that a significant snowstorm is probable, particularly for much of New Brunswick and especially the NE corridor of the province.
High confidence exists that this storm will produce a widespread swath of 20-30cm+ across New Brunswick, with slightly lesser amounts along the Bay of Fundy shoreline. Additionally, due to a surge of milder Atlantic air, a mix of snow/rain will lead to less significant amounts for coastal regions of Nova Scotia, Eastern PEI and most of Cape Breton.
While temperatures will be slightly mild at the surface and @ 925mb, further upper atmospheric temperatures are still quite chilly, therefore there is almost a nil chance of freezing rain/ice-pellets.
Subsequently, ‘dry air’ is non-existent in this case at the surface, and moisture will indeed remain high.
Snow ratios will not be exceptionally high, however, based on the current track of the low pressure system, surface temperatures will remain slightly cooler across Eastern and Northeastern New Brunswick, thereby allowing for higher totals than their surrounding counterparts.
Watch for gusty winds/localized blowing snow for Eastern and Northeastern sections of New Brunswick up to 75km/h. Elsewhere, gusts up to 65km/h is probable.
While snow will be somewhat limited, watch for very strong wind gusts for Nova Scotia near the coast up to 110km/h.
Updated Information: March 13th, 2018 @ 7:00PM ADT
Nor’easter continues to loom for much of the Maritime provinces. High confidence still exists for a significant impact.
Current indications support particularly major impact for Eastern and Northeastern sections (especially) of New Brunswick where 30-40cm of snow could accumulate.
The track of the low will now move more-so slightly off-shore, rather than ‘hug’ the Eastern Seaboard of the USA, thereby allowing for further intensification; milder air will infiltrate the immediate Nova Scotia coast-line, thereby limiting snowfall amounts.
There is some level of confidence that regions along the Greenwood-Kentville (NS) corridor could now receive 15-20cm instead of the 8-15cm as previously posted. However, because confidence is not entirely high we have decided to only inform individuals, rather than updating our map.
Highest confidence continues to exist for NE New Brunswick receiving the highest impact from this system (particularly just N and NW of Moncton, through Bathurst).
Heavy snow will somewhat blanket coastal regions of Nova Scotia initially, however, it is important to note that a transition to rain will occur. While snowfall may total 10-15cm across coastal regions of Nova Scotia, it will melt quickly through the Pre-Dawn and the morning of Wednesday (March 14th).
Continue to return to this post every hour as updated information will be released as the event draws near.
Please stay tuned, as we at TCW are monitoring this situation attentively.
Drive safe and always be alert during winter conditions.
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