Behind a rapidly developing coastal storm, an extremely frigid Arctic air mass pour into the region from the north, beginning during the late morning hours on Sunday, February 15th.  With the developing storm just east of the region, a strong pressure gradient allowed for very strong winds.  Northwest winds frequently gusted over 30 MPH, with some gusts as high as 46 MPH through the evening hours.
Temperatures fell quickly through the day and dropped below zero for Sunday night into the morning of Monday, February 16th.  Some temperatures were as cold as 30 degrees below zero. With winds continuing to be gusty during the overnight and morning hours, wind chill values dropped as low as 15 to 45 degrees below zero.
With much of the month experiencing cold temperatures, many towns and cities continued to keep warming shelters open.  There were many reports of bursts water mains and pipes due to the frigid temperatures penetrating deep into the ground.  This was especially true in areas where the infrastructure was older.
By the afternoon hours on Monday, February 16th, wind chill values finally rose above dangerous levels, although it remained rather cold through the remainder of the day.

Extreme Cold/Wind Chill in WESTERN ULSTER, NEW YORK
From 15-FEB-15 10:00:00 to 16-FEB-15 12:00:00 (EST-5)
Reported by: Public

Extreme Cold/Wind Chill in EASTERN DUTCHESS, NEW YORK
From 15-FEB-15 10:00:00 to 16-FEB-15 12:00:00 (EST-5)
Reported by: Public

Extreme Cold/Wind Chill in EASTERN COLUMBIA, NEW YORK
From 15-FEB-15 10:00:00 to 16-FEB-15 12:00:00 (EST-5)
Reported by: Public

Cold/Wind Chill in EASTERN GREENE, NEW YORK
From 15-FEB-15 10:00:00 to 16-FEB-15 12:00:00 (EST-5)
Reported by: Public

Cold/Wind Chill in WESTERN COLUMBIA, NEW YORK
From 15-FEB-15 10:00:00 to 16-FEB-15 12:00:00 (EST-5)
Reported by: Public

Cold/Wind Chill in WESTERN DUTCHESS, NEW YORK
From 15-FEB-15 10:00:00 to 16-FEB-15 12:00:00 (EST-5)
Reported by: Public

Cold/Wind Chill in EASTERN ULSTER, NEW YORK
From 15-FEB-15 10:00:00 to 16-FEB-15 12:00:00 (EST-5)
Reported by: Public

Extreme Cold/Wind Chill in SOUTHERN HERKIMER, NEW YORK
From 15-FEB-15 10:00:00 to 16-FEB-15 12:00:00 (EST-5)
Reported by: Public

Extreme Cold/Wind Chill in NORTHERN HERKIMER, NEW YORK
From 15-FEB-15 10:00:00 to 16-FEB-15 12:00:00 (EST-5)
Reported by: Public

Extreme Cold/Wind Chill in HAMILTON, NEW YORK
From 15-FEB-15 10:00:00 to 16-FEB-15 12:00:00 (EST-5)
Reported by: Public

Extreme Cold/Wind Chill in NORTHERN FULTON, NEW YORK
From 15-FEB-15 10:00:00 to 16-FEB-15 12:00:00 (EST-5)
Reported by: Public

Extreme Cold/Wind Chill in SOUTHERN FULTON, NEW YORK
From 15-FEB-15 10:00:00 to 16-FEB-15 12:00:00 (EST-5)
Reported by: Public

Extreme Cold/Wind Chill in MONTGOMERY, NEW YORK
From 15-FEB-15 10:00:00 to 16-FEB-15 12:00:00 (EST-5)
Reported by: Public

Extreme Cold/Wind Chill in NORTHERN WARREN, NEW YORK
From 15-FEB-15 10:00:00 to 16-FEB-15 12:00:00 (EST-5)
Reported by: Public

Extreme Cold/Wind Chill in SOUTHEAST WARREN, NEW YORK
From 15-FEB-15 10:00:00 to 16-FEB-15 12:00:00 (EST-5)
Reported by: Public

Extreme Cold/Wind Chill in NORTHERN SARATOGA, NEW YORK
From 15-FEB-15 10:00:00 to 16-FEB-15 12:00:00 (EST-5)
Reported by: Public

Extreme Cold/Wind Chill in SOUTHERN SARATOGA, NEW YORK
From 15-FEB-15 10:00:00 to 16-FEB-15 12:00:00 (EST-5)
Reported by: Public

Extreme Cold/Wind Chill in NORTHERN WASHINGTON, NEW YORK
From 15-FEB-15 10:00:00 to 16-FEB-15 12:00:00 (EST-5)
Reported by: Public

Extreme Cold/Wind Chill in SOUTHERN WASHINGTON, NEW YORK
From 15-FEB-15 10:00:00 to 16-FEB-15 12:00:00 (EST-5)
Reported by: Public

Extreme Cold/Wind Chill in SCHOHARIE, NEW YORK
From 15-FEB-15 10:00:00 to 16-FEB-15 12:00:00 (EST-5)
Reported by: Public

Extreme Cold/Wind Chill in EASTERN SCHENECTADY, NEW YORK
From 15-FEB-15 10:00:00 to 16-FEB-15 12:00:00 (EST-5)
Reported by: Public

Extreme Cold/Wind Chill in WESTERN SCHENECTADY, NEW YORK
From 15-FEB-15 10:00:00 to 16-FEB-15 12:00:00 (EST-5)
Reported by: Public

Extreme Cold/Wind Chill in EASTERN ALBANY, NEW YORK
From 15-FEB-15 10:00:00 to 16-FEB-15 12:00:00 (EST-5)
Reported by: Public

Extreme Cold/Wind Chill in WESTERN ALBANY, NEW YORK
From 15-FEB-15 10:00:00 to 16-FEB-15 12:00:00 (EST-5)
Reported by: Public

Extreme Cold/Wind Chill in WESTERN RENSSELAER, NEW YORK
From 15-FEB-15 10:00:00 to 16-FEB-15 12:00:00 (EST-5)
Reported by: Public

Extreme Cold/Wind Chill in EASTERN RENSSELAER, NEW YORK
From 15-FEB-15 10:00:00 to 16-FEB-15 12:00:00 (EST-5)
Reported by: Public

Extreme Cold/Wind Chill in WESTERN GREENE, NEW YORK
From 15-FEB-15 10:00:00 to 16-FEB-15 12:00:00 (EST-5)
Reported by: Public