Dec 15, 2013: More Snow on Tuesday

[notice]Blog Note: No updates will be posted on Monday and Wednesday. Occasional updates on the snow will be posted on Tuesday, with daily updates to be resumed on Thursday, December 19.[/notice]

Forecast Highlights:

f54A wintry pattern continues across the region after a significant storm yesterday produced moderate to heavy snow followed by ice inland and rain near the coast. More snow is on the way, however, as a weak system will track through the region on Tuesday, likely producing an additional 1-3 inches of snow in the area with higher totals possible in New England. A brief warm up is anticipated next weekend, but with more cold and additional storm potentials likely to follow (Image credit: PSU e-Wall).




Tonight – Tuesday: Cold, More Snow on Tuesday

As of this afternoon, the coastal low has already moved out of the region and is currently over Nova Scotia. Temperatures warmed into the mid to upper 30s for most of the area, helping to melt some of the snow and ice from yesterday, especially north and west of NYC where temperatures failed to spike above freezing last night. A closed upper level low over the Midwest will move through the region tonight into tomorrow, bringing another quick frigid air mass into the Northeast. The coldest temperatures will remain north of the area, although temperatures on Monday are expected to peak in the mid to upper 20s across the area with partly sunny skies, and fall overnight into the low 20s near NYC and the coast and the 10s for the rest of the area.

The next storm will affect the region on Tuesday, as a weak, moisture starved low pressure races towards western New York state, with a transfer expected to a developing coastal low near the area, which will then intensify as it tracks northeast up the coast while producing more widespread precipitation. The system will be fast moving, with up to 6 hours of snow likely, generally between 5am-12pm. Snow may fall moderately at times before quickly ending. At this time, the forecast is for 1-3 inches of snow across the area, with locally higher totals possible over Connecticut.


Wednesday – Beyond: Warming Up, Then Colder With Storm Potential

After a cold and stormy 10-day period, a brief moderation in temperatures is expected as ridging briefly builds into the region by the late week, with temperatures warming up into the 30s on Wednesday, and likely reaching the upper 40s-low 50s by Friday as a cold front moves through overnight, bringing rain overnight and a gradual cool down behind it. There remains some uncertainty regarding the exact handling of the setup, especially in the western US in regards to a potential cutoff low, although the possibility may be there for another storm to affect the region towards Sunday or early next week as colder than average temperatures may make a return into the region. More information will be posted with Tuesday’s update.

<< December 12 | December 13-15 | December 16 >>

Sunday, December 15 Observations:


Read more: December 14-15 Storm Updates

Temperatures continued to warm up overnight as precipitation began to end towards 2-5am from SW to NE, falling as rain in NYC, Long Island and NE NJ, and sleet/freezing rain further inland. Temperatures in Long Island peaked in the mid 40s-low 50s in the early morning hours before quickly cooling down, while the rest of the area slowly warmed up into the mid-upper 30s by the afternoon hours, with more sunshine observed later into the day as the storm system exited the region.

The highest temperature was 54 degrees in Westhampton Beach, NY, and the coolest high temperature was 36 degrees in Sussex, NJ and New Haven, CT.


Saturday, December 14 Observations:

12.14.13Read more: December 14-15 Storm Updates

The first significant snowstorm of the winter affected the area on December 14. As the arctic front moved through the area, winds switched to the N-NE with colder temperatures, stuck in the mid-upper 10s inland and the low-mid 20s for the rest of the area by the morning and afternoon hours. Light snow developed early in the morning, falling moderately at times near and west of NYC but with more widespread moderate-heavy snow developing after 3-5pm. As the coastal low pressure developed and tracked up the coast, stronger east-SE winds developed near the coast by the evening, leading to a changeover to rain for NYC and Long Island, with temperatures in Long Island then rapidly rising into the 30s and 40s. Further inland, however, low level cold took longer to erode as temperatures aloft warmed above freezing, leading to a changeover to sleet in interior NW NJ/SE NY and freezing rain towards southern CT, SE NY and NE NJ. Snow accumulations of at least 4-8 inches were observed from NYC and north/west and 1-4″ in Long Island, with up to 1/4 inch of ice in the north/west suburbs of NYC into SW CT.

Most of the area saw highs in the mid-upper 20s, with low 30s near NYC and NE NJ and mid 30s-low 40s in Long Island/far SE CT. The highest temperature was 43 degrees in JFK and Westhampton Beach, NY, and the coolest high temperature was 22 degrees in Montgomery, NY.


Friday, December 13 Observations:

12.13.13Thursday’s cold air mass slightly moderated with a warm up in temperatures ahead of an arctic front that slowly dropped south through the region, bringing high temperatures into the low-mid 30s across the area. Cloud cover increased mainly towards the evening and night hours as the arctic front approached and ahead of a developing storm system over the central US.

The highest temperature was 36 degrees in multiple locations, and the coolest high temperature was 32 degrees in Andover, NJ and Danbury, CT.

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