Feb 13-14, 2013 Storm Summary

February 13-14, 2013 Snowstorm

A relatively weak low pressure tracked through the southern Mid Atlantic and off the Virginia coast while gradually intensifying, producing widespread light-moderate snowfall across the northern Mid Atlantic and coastal southern New England. Snow totals were minor compared to the blizzard several days earlier, with the storm having produced widespread 1-4 inch totals.




February 13-14, 2013 Storm Archive

February 9 – Forecast Update
February 10 – Ice/Rain Monday, Thurs Storm Possible
February 11 – Two Storms Coming Up
February 12 – Some Snow Weds Night, Mild Friday
February 13 – Snow Tonight, Then Mild Friday


Storm History

A weak low pressure developed in the southern US near the Gulf of Mexico coast on February 12, producing widespread rain, mixing with snow in northern Texas and Oklahoma. The low pressure continued to quickly track northwest, reaching northern Georgia overnight into early Wednesday morning, February 13. Widespread precipitation spread into the Mid Atlantic throughout the day until the low pressure expanded further east, redeveloping just off the southeast Virginia coast in the evening with a minimum pressure near 1000 mb. The low continued to quickly track ENE overnight, intensifying slightly to reach a minimum pressure of 994 mb on Thursday morning, February 14, while moving away from the region.


Forecasting The Storm

This section will be added soon.


Storm Impact in the Northeast

Regional radar image from 7:08 PM 2/13,  from the National Weather Service. Light to moderate precipitation in the form of rain/snow covers the eastern half of PA and most of NJ in this map.

Widespread precipitation spread into the central and northern Mid Atlantic early on Wednesday, 2/13, with the snow focusing over Pennsylvania, especially in the afternoon when a band of heavy snow set up near State College, producing temporarily heavy snow rates. Temperatures were marginal for snow accumulations elsewhere, however, hovering near freezing, with a rain/snow mix falling in New Jersey towards the late afternoon and evening, locally heavy in parts of southern-central New Jersey.

As the low pressure redeveloped near the southeast VA coast, precipitation stopped expanding north near northern PA and northern NJ; while radar showed widespread moderate snow reaching southern NY state and southern New England, there was plenty of dry air in the northern half of the storm with some or all of the snow evaporating before reaching the ground. The snow ended overnight as the storm quickly raced offshore.


Storm Rain/Snow Totals

The map below shows estimated snow totals from the storm across the region based on NWS storm reports. Actual totals may be locally higher/lower than shown below.

2.13.13_snowSnow totals were less significant than expected in the days leading up to the storm, especially when compared with the New England blizzard just days earlier, with the storm ending up as a minor event. Despite the radar indicating widespread moderate snowfall, accumulations were not nearly as significant due to surface temperatures barely near/below freezing, a lack of cold air mass and a high pressure to the north, as well as weak dynamics, and some of the precipitation in the northern side of the storm evaporated before reaching the ground.

Snow totals generally ended up between 1 and 3 inches in northern Maryland/WV, Pennsylvania, western NJ and coastal southern New England, with locally heavy snow bands resulting in over 3 inches in central PA and SE New England. Lighter precipitation as well as marginal temperatures in the NYC area resulted in an area of lower totals under 1 inch.

Below is a list of selected snow reports across the area from the National Weather Service, listed by highest total from each county:

Northern NJ:
3.1″ – West Milford, NJ (Passaic)
0.9″ – Cedar Grove, NJ (Essex)
0.2″ – Ridgewood, NJ (Bergen)

Southeast NY:
2.0″ – Harriman, NY (Orange)
1.8″ – Millwood, NY (Westchester)
1.5″ – Suffern, NY (Rockland)
1.0″ – Kent Cliffs, NY (Putnam)

New York City:
T – LaGuardia (Queens)
T – Central Park (Manhattan)

Long Island and South CT:
2.8″ – Waterford, CT (New London)
2.1″ – Upton, NY (Suffolk)
1.4″ – Danbury, CT (Fairfield)
1.2″ – Clinton, CT (Middlesex)
0.3″ – North Haven, CT (New Haven)

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