Posts

Miguel Pierre

3/13 Evening Zones Update: Blizzard with High Winds and Coastal Flooding Tuesday

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While many people focused on blizzard with very heavy snowfall, there will other important hazards that come with this storm. The blizzard will also be a major Nor’easter with strong winds, especially closer to the coast, tomorrow morning and early afternoon. There will be tight thermal gradient between deep low off Delmarva coast and high over Southeast Canada. This will  will east to northeast winds sustained at least between 20-30 mph with frequent gusts up to 40 mph over much of the region. But there potential for even much higher gusts with strong easterly 850mb-950mb jet moving through the region.

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Steven Copertino

3/12 PM All Zones Update: High-Impact Blizzard Likely Tuesday Into Wednesday

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Today has been what some may call the “calm before the storm”, as the day has been characterized by mostly sunny conditions across the entire area with temperatures only in the upper 20’s to low 30’s, which is below normal for this time of year. We have also seen some gusty winds across the area thanks to isobaric packing between an Arctic high pressure system centered over the central Canadian prairies and a deep low pressure system off of the eastern Canadian maritime region. As this low pressure continues to the east, winds should gradually diminish this evening as the high pressure from Canada takes control. Tonight should be an excellent night for steep radiational cooling. Under mostly clear skies and light winds, temperatures will be able to fall into the upper single digits for inland locations and teens for the rest of the region, so another very cold night is expected.

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John Homenuk

Blizzard likely Tuesday with widespread significant snowfall

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A powerful Nor’Easter is expected to develop off the coast of Mid Atlantic late Monday Night, strengthening and moving to a position southeast of Long Island on Tuesday. Bands of extremely heavy snowfall are expected to rotate inland from the strong storm system, impacting a large majority of the Northeast United States from Washington, DC to Boston — and most areas in between. Snowfall amounts are expected to be significant over a large area.

The storm system is developing as a result of a complex interaction in the mid and upper levels of the atmosphere, and some uncertainty still exists in regards to the exact track of the storm system. However, confidence is higher than normal that the storm system itself will bring significant impacts. We suggest planning ahead and adjusting your schedule as necessary to accommodate for significantly impactful weather on Tuesday. We’ve laid out a breakdown of the storm system below.

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Miguel Pierre

FREE 3/12 AM All Zones Update: Blizzard Likely Late Monday Night and Tuesday

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A very cold airmass with well below normal temperatures continues to be over the region over the next few days. Today (Sunday), some instability in the atmosphere will cause some clouds to mix with sunshine with a few flurries possible again. But winds are expected to be lighter out of the northwest. So it won’t feel as harsh as yesterday. Temperatures should rise into the upper 20s to lower 30s. Overnight lows tonight will be the single digits and lower to middle teens over the region, as high pressure sitting overhead and calming winds support ideal radiational cooling conditions. On Monday, high pressure over will support plenty of sunshine during the morning hours. Then more high clouds will start increasing during the afternoon from the southwest. High temperatures will be a little warmer in the low to mid 30s.

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