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Website Information
Winter Storm Archive - The Winter Storm Archive is the main landing page for all past winter weather events. It contains an archive of nearly 300 storms dating back to 1994. Each storm has snowfall maps, a radar animation and surface and upper air maps. This archive is continually being updated on a near daily basis. It also contains links to other portions of the archive covered below.
Historic Storm Archive - This page is an archive of all historic storms that are also included in the Winter Storm Archive. The purpose of this page is to filter for only the 12"+ major events to easily view at a glance. The historic storms include additional maps, radar and satellite that are not present for other lesser events. It also includes storms prior to 1994 and will be updated with new storms from 1888-1994 in the future.
Seasonal Snowfall Archive - This page has seasonal snowfall maps for Connecticut, Southern New England and the Northeast. Tri-State Area seasonal snowfall maps will be coming in 2026. It also includes a statistics page for major cities, average snowfall and a dedicated page for recent seasons.
Connecticut Snowfall Maps - The Connecticut Snowfall Maps Archive has only snowfall maps sorted by season back to 1994. It includes all snowfall maps for each season regardless of snowfall amount. There are additional snowfall maps here as the Winter Storm Archive only includes 3"+ events. There is also dedicated pages for 12"+, 24"+, early and late season, holiday storms and ice storms.
Tri-State Area Snowfall Maps - The Tri-State Area Snowfall Maps Archive has only snowfall maps sorted by season back to 1994. It includes all snowfall for each season regardless of snowfall amounts. There are additional snowfall maps here as the Winter Storm Archive Only includes 3"+ events. There is also dedicated pages for 12"+, 24"+ and early and late season storms.
Southern New England Snowfall Maps - The Southern New England Snowfall Maps Archive has only snowfall maps sorted by season back to 1994. It includes all snowfall for each season regardless of snowfall amounts. There are additional snowfall maps here as the Winter Storm Archive Only includes 3"+ events. There is also dedicated pages for 12"+, 24"+ and early and late season storms.
Snowstorm - An all snow event for the vast majority (>80%) of the area that accumulated around 6" or more (warning level snowfall) for at least a portion of the region (a county or two wide).
Snow & Rain Storm - A winter storm that is mostly snow for the majority of the area and a minority of the storm (<50%) is rain. The storm must meet warning level snowfall (6"+) or have significant rainfall (>0.75") for a portion of the area.
Rain & Snow Storm - A winter storm that is mostly rain for the majority of the area and a minority of the storm (<50%) is snow. The storm must meet warning level snowfall (6"+) or have significant rainfall (>0.75") for a portion of the area.
Snow & Sleet Storm - A winter storm that is mostly snow and sleet for the majority of the area and meets warning level snowfall (>6" of snow and sleet combined) for a portion of the area (at least a county or two wide)
Snow & Ice Storm - A winter storm that is mostly snow and ice for the majority of the area and meets warning level snowfall (>6") or Ice Storm Warning criteria (>0.5" of ice).
Snow & (Sleet, Ice or Rain) Storm - (e.g. Snow, Sleet & Ice Storm) A winter storm that has a variety of precipitation types along with snow and meets warning level snowfall (>6") or has significant rainfall (>0.75") for a portion of the area. An example would be a Snow, Ice & Rain Storm where the majority is snow that changed to freezing rain and rain.
Blizzard - An all snow event for the vast majority (>80%) of the area that accumulated around 6" or more (warning level snowfall) for at least a portion of the region (a county or two wide). And the storm meets Blizzard Warning criteria for a portion of the area (at least a few airport sites). Blizzard criteria is defined as snow or blowing snow with wind gusts 35+ mph that reduces visibility to 1/4 mile or less for at least 3 hours.
Snow & Sleet Blizzard - A majority snowstorm that changed to sleet for the vast majority (>80%) of the area that accumulated around 6" or more (warning level snowfall) for at least a portion of the region (a county or two wide). And the storm meets Blizzard Warning criteria for a portion of the area (at least a few airport sites). Example: March 14th, 2017.
Snow & Ice Blizzard - A majority snowstorm that changed to freezing rain (ice) for the vast majority (>80%) of the area that accumulated around 6" or more (warning level snowfall) for at least a portion of the region (a county or two wide). And the storm meets Blizzard Warning criteria for a portion of the area (at least a few airport sites). Example: March 13-14th, 1993
Snow & Rain Blizzard - A majority snowstorm that changed to rain for the vast majority (>80%) of the area that accumulated around 6" or more (warning level snowfall) for at least a portion of the region (a county or two wide). And the storm meets Blizzard Warning criteria for a portion of the area (at least a few airport sites). Example: February 25-27th, 2010.
Light Snow Event - An all snow event for the majority of the area (>80%) that accumulates at least 3" (Advisory level snowfall) but less than 6" for at least a portion of the area (a county or two wide).
Light Snow & Rain Event - An majority snow event for the majority of the area (>80%) that accumulates at least 3" (Advisory level snowfall) but less than 6" for at least a portion of the area (a county or two wide). The minority of the storm (<50%) is rain and rainfall amounts are generally less than 0.75"
Light Rain & Snow Event - An majority rain event for the majority of the area (>80%) that with light rainfall totals generally less than 0.75" and snowfall totals greater than 3" but less than 6" for a portion of the area (at least a county or two wide).
Light Snow & ( Sleet, Ice or Rain) Event - (e.g. Light Snow, Sleet & Rain Event). A winter event with a variety of precipitation types including a combination of snow, sleet, ice or rain that accumulates more than 3" but less than 6" for a portion of the area (at least a county or two wide).
Snow Squall Event -A snow event where the majority of the accumulating snow was from numerous snow squalls or snow showers. Total snowfall must be at least 3" for a portion of the area (at least a few counties). Some squalls may produce localized amounts over 6". Example: February 19-20th, 2009
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