The February 2007 North American blizzard was a massive winter storm that affected most of the eastern half of North America, starting on February 12, 2007, and peaking on Valentine's Day, February 14. The storm produced heavy snowfalls across the midwestern United States from Nebraska to Ohio and produced similar conditions across parts of the northeastern United States, and into Canada in Ontario, Quebec and New Brunswick. Significant sleet and freezing rain fell across the southern Ohio Valley and affected portions of the east coast of the United States, including the cities of Boston, Baltimore, Washington, D.C., New York City and Philadelphia.
The southern portion of the storm produced severe thunderstorms with numerous tornadoes reported. One tornado hit a subdivision of New Orleans that was still recovering from the effects of Hurricane Katrina in August 2005. In total, this storm system was responsible for 37 deaths across 13 U.S. states and Canadian provinces of New Brunswick, Ontario and Quebec. The NOAA classified the storm as a Category 3 "Major" storm. The National Weather Service has determined that this storm was one of the three largest snowstorms to hit the inland areas of the northeastern United States since 1940.
Prior to the storm In sharp contrast to the mostly mild weather in the first few weeks of winter, the eastern half of the continent was under the influence of cold temperatures. Numerous areas had substantial snowfall deficits before this storm. After several weak Alberta clippers crossed the eastern half of the continent and brought occasional light snowfalls, a large dip in the Northern branch of the jet stream favored a more active pattern, which, as it connected with the southern branch, led to the development of the storm.
An area of low pressure tracked across southeastern Canada during the 12th, which brought an arctic front across the Mid Atlantic region late on the 12th. As this occurred, a strong area of high pressure located across central Canada built down into the Northeast, allowing very cold air to spill southward ultimately leading to what is known as cold air damming. This occurs east of the mountains down through the Mid Atlantic states. Meanwhile, a Pacific storm slammed onto the California coast during the 11th and as it moved eastward, a new area of low pressure developed across southeastern Colorado and the Texas Panhandle.
Previously, portions of the Great Lakes were hit by a significant lake effect snow event which dumped incredible amounts of snow over portions of central New York. Several areas received over of snow in a ten-day period just before the large winter storm as northwesterly winds and unfrozen lake surfaces due to the early winter warm weather favored the heavy snowfall. Several areas across Michigan and Ontario also received significant amounts of snow with locally of snow east of Georgian Bay in Ontario.
Storm track
From February 10 to 11, a low pressure system developed near the Rockies and moved towards the Great Plains of the United States. It later tracked across the Ohio Valley and merged with a new coastal low. It then moved over eastern Quebec on February 14 before exiting northeastern Quebec and Newfoundland and Labrador on February 16. It dumped over of snow across numerous areas from Iowa to New Brunswick, including major cities such as Akron, Detroit, Champaign–Urbana, Chicago, Cleveland, Columbus, Springfield, Peoria, Indianapolis, Fort Wayne, Dayton, Toledo, Cincinnati, London, Hamilton, the Niagara Region, Toronto, Sherbrooke, Saguenay, Trois-Rivières, Ottawa, Montreal, Quebec City, Pittsburgh, Buffalo, Rochester, Windsor, Syracuse and Albany. This also includes areas such as Northern Oswego County, New York, which received historic lake effect snowfall amounts in the week prior to the storm.
In addition to the snowfall, snow squalls coming from Lake Ontario gave local amounts of over of snow near the Hamilton and Niagara regions, where of snow had already fallen on February 13.
Heavy ice amounts fell for locations along Interstate 95 from Maine to Virginia and west towards southern Ohio and Indiana. Ice was expected for parts of the Canadian Maritimes.
This storm became impressive as it moved into the Ohio Valley during the 13th. However, as additional energy moved into the eastern part of the country, a new area of low pressure developed near the North Carolina coast late on the 13th. This allowed mainly light snow to overspread the region from south to north during the early morning hours of the 13th. Low pressure developed in the southern Plains on Monday the 12th as a cold front pushed southward across the Northeast. By Tuesday the 13th, the storm moved eastward across the lower Mississippi Valley while the cold front became stationary in the Carolinas. On the night of the 13th, the primary low moved into the far eastern Ohio Valley while a secondary low developed on the stalled front in the Carolinas. During the day on Wednesday the 14th, this secondary low strengthened rapidly and moved northeastward along the mid-Atlantic and New England coasts while the primary low dissipated in the central Appalachians. By Thursday the 15th, the storm had moved into eastern Canada.
Impact
States of emergency and mobilizations
Maine Governor John Baldacci declared a state of emergency in order to assure heating oil for residents of the state, which was one of the hardest hit areas by the snowstorm.
Due to the additional heavy snowfall, New York Governor Eliot Spitzer called in the National Guard to assist in the snow removal efforts in the areas hit by the lake effect snow storm.
In Pennsylvania, Governor Ed Rendell declared a disaster emergency across the entire state on the 15th. PPL Electric Utilities Corporation reported 1,542 customers were without power for a time during the storm in the Lancaster, Harrisburg and Allentown areas. Snow began across between 6 AM and 7 AM EST on the 13th in Philadelphia, Delaware, Chester, Montgomery and Berks counties. The snow then overspread Bucks, Northampton, Lehigh, Carbon, Berks, and most of Schuylkill counties between 8 AM and 10 AM EST, but held off in Monroe County until the early afternoon hours. There was a lull in the precipitation during the evening hours of the 13th especially across southeastern Pennsylvania, however the precipitation became widespread overnight and during the early morning hours of the 14th.
As some warmer air began to move in above the surface, the snow mixed with and changed to sleet and freezing rain between 6 PM and 7 PM EST on the 13th in Philadelphia and Delaware Counties, then between 7 PM and 11 PM across most other areas in eastern Pennsylvania. The southern Poconos saw less mixed precipitation, however there was a period of mixed precipitation between about 7:30 PM on the 13th and 11:30 AM on the 14th. For a brief time during the afternoon of the 14th, temperatures rose a couple of degrees above freezing with no precipitation falling. Temperatures then dropped below freezing again by the late afternoon of the 14th with a period of snow before the precipitation came to an end between 8:30 PM and 10 PM on the 14th. Wraparound snow showers lingered in Monroe and Carbon Counties until 2 AM EST on the 15th.
In Berks County, snow and sleet along with very cold temperatures combined with some accidents and other aspects to cause a 50-mile backup on Interstate 78. Many motorists, including more than 100 trucks, were stuck on the interstate for nearly 24 hours, without food, water and running out of fuel. At 12:26 PM on the 14th, a caller tells a 911 center he's been stuck in traffic on westbound Interstate 78 near the Berks-Lehigh county line for more than an hour. At 1:02 PM, a truck driver tells the Berks Communications Center about a seven-mile backup on the eastbound lanes of Interstate 78 near Hamburg. At 4:40 PM, a 911 caller asked to speak to the Berks Emergency Management Agency. The Berks Deputy Coordinator took the call. At 4:59 PM, The Berks Deputy Coordinator called the State Emergency Operations Center and was told the center learned of the backup at 4:33 PM. At 5:22 PM, Berks Emergency Management calls the state police at the Hamburg barracks but cannot get through, so he decided to drive there. At 6:08 PM, the Berks Emergency Management Deputy Coordinator finds that the Hamburg barracks is without power and phones. At 6:27 PM, a senior decision-maker from PennDOT is requested to arrive at the Hamburg state police barracks to help with communications. At 9:30 PM, a PennDOT supervisor arrived in Hamburg.
At 10:30 PM, all westbound Interstate 78 traffic is stopped at the Hamburg exit due to numerous disabled vehicles. At 10:40 PM, Governor Ed Rendell declared a disaster emergency. On the 15th at 3:54 AM, state troopers and emergency personnel began walking miles of Interstate 78, waking up truckers who have gone to sleep as traffic begins to move. At 5 PM on the 15th, the state orders Interstate 78 shut down in both directions from Interstate 81 in Lebanon County to Route 100 in Lehigh County. At 6 PM on the 15th, plowing begins and continued through the night. Additional snow removing equipment was brought in from the western part of the state to help with the clearing of the highway. Highway officials along with the National Guard and State Police worked to clear the stuck trucks and cars from the highway, therefore plowing and ice removal can get fully underway. On the 16th, the interstate remained closed throughout the day as crews continued to plow and remove ice. On the 17th at 4 PM, the interstate reopened.
The Exeter Township snow emergency, which was declared on the 14th, was extended through 4 PM on the 15th. Several schools across the county were closed on the 14th, with some also closed on the 15th. Across the Lehigh Valley: In Lehigh County, The city of Allentown declared a snow emergency early on the 14th, which was then lifted at 8 PM on the 14th. The weight of snow and ice, on the 14th, brought down the dome over the swimming pool at the West End Racquet and Fitness Club in South Whitehall Township. The dome itself was destroyed. Also, the Brookside Country Club in Wescosville also reported dome damage as a result of the snow and ice. In Northampton County, an 83-year-old woman was found dead on the rear porch of her home from hypothermia. Also in Bethlehem, a pedestrian was hospitalized after a private snowplow operator backed over him while clearing the Sheetz gas station parking lot at 3201 Schoenersville Road on the 14th. County Emergency Dispatch officials reported about a dozen or so minor vehicle accidents due to the slippery conditions. The snow and ice was too much on the 15th for a dome covering a soccer field at the Iron Lakes Sports Club on Shankweiler Road in North Whitehall that it collapsed.