The snowstorm of April 3 to 6, 2007

The Regional Snowfall Index is NOAA’s ranking of snowstorms east of the Rockies by how much snow fell, over how wide an area and on how many people, region by region: the area and the population above four snowfall thresholds set for each region, weighted against that region’s own history. A storm is scored in each region it reached, on a scale from 1, notable, to 5, extreme.

Events

352

Deaths

2

Injuries

3

Damage

$2.1 million

Episodes

44

Every winter weather episode the Weather Service filed east of the Rockies in these dates. A few may belong to another system on the same days. Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

• Winter Storm in Minnesota, April 2 to 3, 20079 eventsAn upper jet over the northern plains helped to enhance snow development with this system. At the surface, a weak area of low pressure tracked from north central Nebraska into southern Wisconsin, while an inverted trough extended up to the north.
• Winter Storm in North Dakota, April 2 to 3, 20073 eventsAn upper jet over the northern plains helped to enhance snow development with this system. At the surface, a weak area of low pressure tracked from north central Nebraska into southern Wisconsin, while an inverted trough extended up to the north.
• Heavy Snow in North Dakota, April 2 to 3, 200711 eventsAn early spring storm, moving from the Northern Rockies and into the Northern Plains, brought snow across much of western North Dakota Monday, April 2nd, through early Tuesday morning April 3rd.|Around six inches of snow fell over southwest North Dakota during this event, with…
• Winter Storm in Minnesota, April 2 to 3, 20076 eventsA surface low pressure system progressed from Nebraska to Iowa from the 2nd to early on the 3rd, and then trekked from Eastern Iowa to Northeast Wisconsin by the evening hours on the 3rd.
• Heavy Snow in South Dakota, April 2 to 3, 20077 eventsA sharp frontal boundary along with an upper level disturbance brought an unusual band of heavy snow across northern South Dakota. Snowfall amounts of 6 to 12 inches occurred from Eureka to Summit. Roads became snow covered or slushy making travel difficult.
• Heavy Snow in Minnesota, April 2 to 3, 20072 eventsA sharp frontal boundary along with an upper level disturbance brought an unusual heavy snow event to west central Minnesota. Roads became snow covered or slushy making travel very difficult. Schools and events were either cancelled or postponed.
• Winter Storm in Minnesota, April 2 to 3, 200712 eventsA powerful low pressure area moved through central Wisconsin in early April, spreading heavy snow to much of northeastern Minnesota. The snow began during the early morning hours of the 3rd, and ended by late that evening.
• Cold in South Dakota, April 3 to 9, 200726 eventsArctic air moved into central and northeast South Dakota and remained for nearly a week. High temperatures from April 3rd to April 9th were mostly in the 20s to around 30 degrees with lows in the single digits and teens.
• Cold in Minnesota, April 3 to 9, 20072 eventsArctic air moved into west central Minnesota and remained for nearly a week. High temperatures from April 3rd to April 9th were mostly in the 20s to around 30 degrees with lows in the single digits and teens.
• Winter Storm in Wisconsin, April 3 to 5, 20076 eventsA strong low pressure area moved through central Wisconsin in early April, spreading heavy snow to far northwestern Wisconsin. The snow began during the morning hours of the 3rd, with the bulk of it falling during the day.
• Blizzard and Winter Storm in Michigan, April 3 to 7, 2007$18,000 · 17 eventsAn intense storm system tracking from the Plains into the Great Lakes dumped heavy lake enhanced snow across much of Upper Michigan from the 3rd into the 7th.
• Winter Storm in Wisconsin, April 3 to 4, 20071 eventLow pressure deepened as it moved across Wisconsin. An area of heavy snow, enhanced by Lake Superior, fell across far northern Wisconsin. Winds gusted over 40 mph at times. Snowfall totals were generally in the 5 to 8 inch range in Vilas County.
• Cold in Kansas, April 4 to 15, 2007$800,000 · 23 eventsThe passage of a cold front April 3rd drove cold arctic air into the Central Plains States, and forced temperatures to plummet to some of the coolest readings ever recorded during early April.
• Heavy Snow in New Hampshire, April 4 to 5, 200712 eventsAn area of low pressure located over the Upper Mississippi River Valley on the morning 3rd moved northeastward to the Great Lakes on the morning of the 4th.
• Heavy Snow in Maine, April 4 to 5, 200717 eventsAn area of low pressure located over the Upper Mississippi River Valley on the morning 3rd moved northeastward to the Great Lakes on the morning of the 4th.
• Winter Storm in Michigan, April 4 to 7, 200711 eventsA rapidly strengthening low pressure system moved across Lower Michigan on the 4th, bringing significant and widespread snow to the region. Winds kicked up substantially as the low reached Lake Huron, resulting in substantial blowing and drifting snow.
• Winter Storm in New Hampshire, April 4 to 5, 2007$60,000 · 2 eventsLow pressure developed off the mid Atlantic coast and tracked through southeast Massachusetts. This storm brought a wintry mix of snow and sleet to southwest New Hampshire, with the highest snowfall totals in Hillsborough County where amounts averaged between 4 and 8 inches.
• Winter Storm in Vermont, April 4 to 5, 20073 eventsA cold front moved across western New England during Wednesday April 4th, allowing colder air to seep into the region from the north.
• Winter Weather in New York, April 4, 2007$35,000 · 7 eventsA complex storm system moved across Ontario and Quebec on the 4th with a frontal boundary that moved across northern New York during the afternoon. Rain mixed with and then changed to sleet and snow across northern New York during the afternoon.
• Winter Storm in Vermont, April 4 to 5, 2007$110,000 · 11 eventsA complex storm system moved across Ontario and Quebec on the 4th with a frontal boundary that moved across Vermont during the afternoon.
• Winter Weather in Vermont, April 4, 2007$30,000 · 5 eventsA complex storm system moved across Ontario and Quebec on the 4th with a frontal boundary that moved across Vermont during the afternoon.
• Winter Weather in Michigan, April 4 to 5, 20071 death · 2 injured · 4 eventsA very cold airmass blasted into the region, leading to intense lake effect snow squalls from Saginaw to Flint and east into Lapeer County. The squalls were narrow but intense bands that dumped up to 4 inches of snow in some areas with only trace amounts in other areas.
• Heavy Snow in Maine, April 4 to 5, 200715 eventsSnow developed across Downeast Maine during the afternoon of the 4th in advance of low pressure tracking northeast along the coast toward the Gulf of Maine.
• Lake-Effect Snow in Pennsylvania, April 4 to 6, 2007$25,000 · 1 eventA strong area of low pressure moved through the Central Great Lakes on the 4th and 5th. Strong northerly winds behind this low pressure caused lake effect snow to develop as this low pressure moved northeast into eastern Canada.
• Lake-Effect Snow in Ohio, April 5 to 6, 2007$25,000 · 1 eventA strong area of low pressure moved through the Central Great Lakes on the 4th and 5th. Strong northerly winds behind this low pressure caused lake effect snow to develop as this low pressure moved northeast into eastern Canada.
• Lake-Effect Snow in New York, April 5 to 8, 2007$65,000 · 5 eventsThe lake event began late Wednesday April 4th following a sharp cold front. A massive upper level low then set up over Quebec and poured near record cold across the eastern two thirds of the nation for several days. Late season lake effect snows continued through the 8th.
• Winter Storm and Winter Weather in Kansas, April 5, 20071 injured · $3,000 · 13 eventsA backdoor cold front pushed southwestward into portions of Central through Southeast Kansas during the morning hours of April 5th. This front eventually stalled out and interacted with an upper level system to spawn a rather intense and narrow band of snow.
• Lake-Effect Snow in Ohio, April 6 to 8, 2007$200,000 · 2 eventsA low pressure located over eastern Canada was slowly moving east away from the area. However, a reinforcing trough of low pressure moved over the area during the 7th and 8th.
• Winter Weather in Colorado, April 6 to 7, 20074 eventsMoist upslope flow caused hazardous widespread freezing drizzle in the I-25 corridor in the Colorado Springs...Walsenburg...and Trinidad areas.
• Lake-Effect Snow in Wisconsin, April 6 to 7, 20072 eventsNortherly winds and moisture combined with unseasonably cold April air to create heavy lake effect snow for parts of northwest Wisconsin.
• Heavy Snow in North Carolina, April 6 to 7, 20075 eventsA record-setting cold airmass, northwest flow, and a strong upper air disturbance resulted in a late season snow shower event across the North Carolina mountains.
• Heavy Snow in Kentucky, April 6 to 7, 20072 eventsAn upper level weather disturbance combined with cold air to bring accumulating snowfall to the higher elevations of eastern Kentucky.
• Winter Weather in North Carolina, April 6 to 7, 20075 eventsA record-setting cold airmass, northwest flow, and a strong upper air disturbance resulted in a late season snow shower event across the North Carolina mountains.
• Winter Storm and Cold in Texas, April 6 to 8, 2007$365,000 · 48 eventsA significant winter weather event with unseasonably cold temperatures affected West Central Texas on Easter Weekend. Winter weather events seldom occur in this region during April.
• Winter Weather in Virginia, April 6 to 7, 20078 eventsA late season snow developed over portions of central Virginia as a low pressure system deepened off the Delmarva Coast late April 6th. Snow showers began early on April 7th, with the heaviest snow falling between 2 and 6 AM.
• Winter Weather in Maryland, April 6 to 7, 20074 eventsA late season snow developed over lower southern Maryland as a low pressure system deepened off the Delmarva Coast late April 6th. Snow showers began early on April 7th, with the heaviest snow falling between 2 and 6 AM.
• Cold in Virginia, April 7, 20071 death · $15,000 · 1 eventIcy road conditions contributed to a one vehicle accident.
• Heavy Snow and Winter Weather in Virginia, April 7, 200711 eventsLow pressure developed over southern Virginia and deepened as it moved offshore. A band of moderate to heavy snow fell over portions of eastern Virginia as the storm strengthened off the Atlantic seaboard.
• Lake-Effect Snow in Pennsylvania, April 7 to 8, 20071 eventUnseasonably cold west-northwest flow over Lake Erie produced 2 to 5 inches of lake-effect snow across portions of the Northwest Mountains in Central Pennsylvania with higher amounts observed over the Snowbelt region of northwest Warren County.
• Heavy Snow and Winter Weather in Texas, April 7, 2007$300,000 · 15 eventsA late season snowstorm struck the South Plains region of west Texas during Easter weekend. Snow accumulations ranged from a trace up to four inches across the region, with fifteen counties receiving at least one inch snow depths.
• Winter Weather in Texas, April 7, 20071 eventA strong Canadian high pressure system was over the region, and when a weak upper level disturbance passed by, light sleet and snow was recorded across southeast Texas.
• Winter Weather in Louisiana, April 7, 20078 eventsA strong Canadian high pressure system was over the region, and when a weak upper level disturbance passed by, light sleet and snow was recorded across southwest Louisiana.
• Winter Weather in Michigan, April 7, 20072 eventsA late season blast of Arctic air led to a few lake effect snow squalls that caused a multi-car accident in the Fenton area and several rollover accidents in the Ann Arbor area on the night before Easter.
• Lake-Effect Snow in Michigan, April 7 to 8, 20071 eventOne last burst of lake effect snow dumped 6 to 8 inches of accumulation on western and central Kalkaska County on the night of the 7th.

The snowstorm of March 27 to 31, 2007The snowstorm of April 13 to 17, 2007Snow nowEvery winter storm filed

NOAA NCEI Regional Snowfall Index, and the Storm Events Database for the episodes.