The snowstorm of January 30 to February 3, 2021

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

1,115

Deaths

10

Injuries

14

Damage

$1.3 million

Episodes

115

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.

• Cold in New York, January 28 to 29, 202113 eventsA combination of an arctic airmass and gusty winds resulted in dangerously cold wind chills across much of eastern New York the night of January 28th into January 29th, 2021.
• Extreme Cold and Cold in Vermont, January 28 to 29, 20213 eventsA combination of an arctic airmass and gusty winds resulted in dangerously cold wind chills across southern Vermont the night of January 28th into January 29th, 2021. Low temperatures ranged from 11 degrees below zero up to 5 degrees above zero.
• Cold in Connecticut, January 28 to 29, 20212 eventsA combination of an arctic airmass and gusty winds resulted in dangerously cold wind chills across western Connecticut the night of January 28th into January 29th, 2021. Low temperatures ranged from 2 degrees below zero up to 6 degrees above zero.
• Extreme Cold and Cold in Massachusetts, January 28 to 29, 20212 eventsA combination of an arctic airmass and gusty winds resulted in dangerously cold wind chills across west Massachusetts the night of January 28th into January 29th, 2021. Low temperatures ranged from 7 degrees below zero up to 6 degrees above zero in Berkshire county.
• Cold in West Virginia, January 29, 20212 eventsGusty northwest winds combined with cold air to cause wind chills around ten degrees below zero over the Allegheny Highlands of West Virginia.
• Blizzard in Alaska, January 29, 20211 eventA strong low pressure system entered the Bering Strait on the 29th of January. Blizzard conditions were reported along the Bering strait on January 29th. |Zone 213: Blizzard conditions reported at the Wales AWOS with a peak gust of 33 kt (38 mph).
• Cold in Virginia, January 29, 20211 eventGusty northwest winds combined with cold air to cause wind chills around ten degrees below zero over western Highland County in Virginia.
• Cold in New York, January 29 to 30, 202120 eventsA combination of an arctic airmass and winds resulted in low wind chills across much of eastern New York the night of January 29th into January 30th, 2021.
• Cold in Connecticut, January 29 to 30, 20212 eventsA combination of an arctic airmass and winds resulted in low wind chills across western Connecticut the night of January 29th into January 30th, 2021. Low temperatures ranged from 2 to 9 degrees above zero.
• Extreme Cold and Cold in Massachusetts, January 29 to 30, 20212 eventsA combination of an arctic airmass and winds resulted in low cold wind chills across west Massachusetts the night of January 29th into January 30th, 2021. Low temperatures ranged from 12 degrees below zero up to 3 degrees above zero in Berkshire county.
• Cold in Vermont, January 29 to 30, 20212 eventsA combination of an arctic airmass and winds resulted in low wind chills across southern Vermont the night of January 29th into January 30th, 2021. Low temperatures ranged from 14 degrees below zero up to 1 degree above zero.
• Heavy Snow and High Wind in Colorado, January 29 to 30, 202150 kt wind · 2 eventsAn upper level system moved across the region, while an associated deepening surface low pressure system was situated over southeast Colorado.
• Heavy Snow and Winter Weather in West Virginia, January 30 to 31, 20216 eventsA slow moving winter storm began impacting West Virginia on the evening of January 30th, with a period of heavy snow affecting most locations. The precipitation changed to rain across the lower elevations by the 31st, before changing back to snow for the start of February.
• Heavy Snow in Washington, January 30 to 31, 20211 eventAnother round of mountain snow affected the Northern Cascades and the Olympics at the end of January.
• Winter Storm and Winter Weather in Iowa, January 30 to 31, 202119 eventsA strong storm system moved into the Midwest on the afternoon of January 30, 2021. Initially, precipitation began as rain as a layer of warm air was in place aloft.
• Winter Storm and Winter Weather in Illinois, January 30 to 31, 20219 eventsA strong storm system moved into the Midwest on the afternoon of January 30, 2021. Initially, precipitation began as rain as a layer of warm air was in place aloft.
• Winter Storm and Winter Weather in Illinois, January 30 to 31, 202122 eventsHeavy snow developed across northern Illinois during the afternoon of January 30th and continued into the afternoon of January 31st. Most of Will and Cook counties saw snowfall totals of 10 to 13 inches, with a few higher reports.
• Winter Storm and Heavy Snow in Indiana, January 30 to 31, 202112 injured · $685,000 · 8 eventsDuring the late afternoon and evening hours of Saturday January 30th, an area of rain arrived across southwest Indiana. As this initial band moved to the northeast, it would transition to snow bringing periods of heavy snow starting around 6 PM that continued through 10 PM.
• Winter Storm in Indiana, January 30 to 31, 20215 eventsHeavy snow developed across northwest Indiana during the afternoon of January 30th and continued into the afternoon of January 31st. Many areas received 8 to 11 inches of snow with amounts decreasing to 6 to 9 inches across Benton County.
• Winter Storm in North Carolina, January 30 to 31, 20219 eventsA wintry mix developed across portions of the mountains and portions of the foothills during the evening of the 30th as a frontal system moved across the Tennessee and Ohio Valleys.
• Winter Weather in North Carolina, January 30 to 31, 20219 eventsA wintry mix developed across portions of the mountains and portions of the foothills during the evening of the 30th as a frontal system moved across the Tennessee and Ohio Valleys.
• Winter Storm and Winter Weather in Wisconsin, January 30 to 31, 202120 eventsA low pressure system tracked east across the Ohio River Valley, bringing widespread light to moderate snow to southern Wisconsin.
• Winter Storm and Winter Weather in Ohio, January 30 to 31, 202128 eventsA complex system brought a quick shot of accumulating snow along and north of the Ohio River on the evening of Saturday, January 30th. This snow tracked north and continued along the I-70 corridor.
• Winter Storm and Winter Weather in Indiana, January 30 to 31, 202124 eventsHeavy snow and strong easterly winds developing during the evening hours of January 30th, and continued through the mid-morning hours of January 31st. The heaviest snow accumulations were along and south of the US 30 corridor where reports of 5 to 10 inches were received.
• Winter Weather in Kentucky, January 30 to 31, 20214 eventsA complex system brought a quick shot of accumulating snow along and north of the Ohio River on the evening of Saturday, January 30th. This snow mixed with sleet and freezing rain before transitioning to all rain.
• Winter Weather in Indiana, January 30 to 31, 20213 eventsA complex system brought a quick shot of accumulating snow along and north of the Ohio River on the evening of Saturday, January 30th. This snow tracked north and continued along the I-70 corridor through the overnight hours.
• Winter Storm in North Carolina, January 30 to 31, 20212 eventsA low pressure system moved out of the central Plains into the Ohio Valley, opening the Mid-Atlantic to southwesterly flow that was enriched with moisture.
• Winter Storm in Virginia, January 30 to 31, 202122 eventsA low pressure system moved out of the central Plains into the Ohio Valley, opening the Mid-Atlantic to southwesterly flow that was enriched with moisture.
• Winter Storm and Winter Weather in Michigan, January 30 to 31, 20213 eventsModerate to heavy snow and strong easterly winds developing during the evening hours of January 30th, and continued through the mid-morning hours of January 31st. The heaviest snow accumulations were in Berrien County where reports of 4 to 8 inches were received.
• Winter Storm in West Virginia, January 30 to 31, 20214 eventsA low pressure system moved out of the central Plains into the Ohio Valley, opening the Mid-Atlantic to southwesterly flow that was enriched with moisture.
• Winter Weather in Virginia, January 30 to 31, 202130 eventsComplex low pressure tracking eastward across the Mid Atlantic region produced snowfall totals between one half inch and three inches across south central, eastern and southeast Virginia.
• Winter Storm in Virginia, January 30 to 31, 202115 eventsComplex low pressure tracking eastward across the Mid Atlantic region produced snowfall totals between three inches and five inches, along with light icing across central and south central Virginia.
• Winter Storm and Winter Weather in Ohio, January 30 to 31, 20218 eventsModerate to heavy snow and strong easterly winds developing during the late evening hours of January 30th, and continued through the morning hours of January 31st.
• Winter Storm and Winter Weather in Maryland, January 31, 202116 eventsClosed low pressure slowly tracked into the Ohio Valley on the 31st before transferring its energy to low pressure off the Mid-Atlantic Coast on the 1st of February. The coastal low slowly tracked northeast while intensifying through midday on February the 2nd.
• Winter Weather in Ohio, January 31, 202110 eventsDuring the morning of January 31st, weakening low pressure moved northward into the lower Ohio Valley.
• Winter Storm and Winter Weather in West Virginia, January 31, 202110 eventsDuring the morning of January 31st, weakening low pressure moved northward into the lower Ohio Valley. Frontogenetic forcing allowed for some higher snow rates during the morning and early afternoon hours, particularly in the higher elevations.
• Winter Weather in District of Columbia, January 31, 20211 eventClosed low pressure slowly tracked into the Ohio Valley on the 31st before transferring its energy to low pressure off the Mid-Atlantic Coast on the 1st of February. The coastal low slowly tracked northeast while intensifying through midday on February the 2nd.
• Winter Storm and Winter Weather in Virginia, January 31, 202128 eventsClosed low pressure slowly tracked into the Ohio Valley on the 31st before transferring its energy to low pressure off the Mid-Atlantic Coast on the 1st of February. The coastal low slowly tracked northeast while intensifying through midday on February the 2nd.
• Winter Storm in West Virginia, January 31, 202111 eventsClosed low pressure slowly tracked into the Ohio Valley on the 31st before transferring its energy to low pressure off the Mid-Atlantic Coast on the 1st of February. The coastal low slowly tracked northeast while intensifying through midday on February the 2nd.
• Winter Weather in Maryland, January 31, 20215 eventsComplex low pressure tracking eastward across the Mid Atlantic region produced snowfall totals between one inch and three and a half inches across the Lower Maryland Eastern Shore.
• Winter Weather in Pennsylvania, January 31, 20219 eventsDuring the morning of January 31st, weakening low pressure moved northward into the lower Ohio Valley. Frontogenetic forcing allowed for some higher snow rates during the morning and early afternoon hours, particularly in the higher elevations.
• Winter Storm in Pennsylvania, January 31, 202129 eventsA long-duration winter storm produced widespread snowfall across central Pennsylvania from January 31 to February 2, 2021. Although the snow began on January 31st, warning criteria was not met in any central Pennsylvania counties until February 1st or 2nd.
• Winter Weather in North Carolina, January 31, 2021$120,000 · 15 eventsWarm moist air surge into the area atop a shallow cold air damming airmass. This result in some light freezing rain falling across the northern Piedmont of central North Carolina during the morning of the 31st.
• Blizzard in Alaska, January 31, 20211 eventA strong low pressure system entered the Bering Strait on the 31th of January. Blizzard conditions were reported along the Bering strait on January 31th and continued into the 2nd of February 2021.
• Winter Weather in Delaware, January 31, 20213 eventsLow pressure tracking out of the Ohio Valley weakened as it moved slowly eastward on January 31st. Meanwhile, as that low weakened, secondary low pressure began to develop off the coast of the Carolinas and tracked northward, just off the mid-Atlantic coast.
• Winter Weather in Maryland, January 31, 20214 eventsLow pressure tracking out of the Ohio Valley weakened as it moved slowly eastward on January 31st. Meanwhile, as that low weakened, secondary low pressure began to develop off the coast of the Carolinas and tracked northward, just off the mid-Atlantic coast.
• Winter Weather in Pennsylvania, January 31, 20218 eventsA complex long duration winter storm system affected Northeast Pennsylvania from around midday January 31st through the early morning of February 3rd.
• Winter Weather in Pennsylvania, January 31, 202113 eventsA major winter storm affected the mid-Atlantic from January 31 to February 2, 2021. Low pressure tracking out of the Ohio Valley weakened as it moved slowly eastward on the 31st.
• Winter Weather in New Jersey, January 31, 202117 eventsA major winter storm affected the mid-Atlantic from January 31 to February 2, 2021. Low pressure tracking out of the Ohio Valley weakened as it moved slowly eastward on the 31st.
• Winter Weather in New York, January 31, 20219 eventsA complex long duration winter storm system affected Central New York from late in the day of January 31st through around midday February 3rd.
• Cold in Ohio, February 1 to 17, 20217 deaths · 1 eventCold temperatures moved into Northeast Ohio during the first half of February 2021. These colder temperatures featured several nights with lows in the single digits and wind chills below zero.
• Winter Storm in Pennsylvania, February 1 to 2, 20211 death · 13 eventsA major winter storm affected the mid-Atlantic from January 31 to February 2, 2021. Low pressure tracking out of the Ohio Valley weakened as it moved slowly eastward on the 31st.
• Winter Storm and Coastal Flood in Massachusetts, February 1 to 2, 2021$207,000 · 50 kt wind · 21 eventsA mid level trough over the Appalachians produced a secondary surface low pressure near the mid-Atlantic coast. High pressure over Hudson Bay allowed low level cold air to stay in place initially.
• Winter Storm in Pennsylvania, February 1 to 2, 202129 eventsA long-duration winter storm produced widespread snowfall across central Pennsylvania from January 31 to February 2, 2021. Although the snow began on January 31st, warning criteria was not met in any central Pennsylvania counties until February 1st or 2nd.
• Winter Storm in New York, February 1 to 3, 202117 eventsLow pressure developed over the Ohio Valley and Middle Atlantic on Sunday, January 31, 2021. The low then consolidated along the Middle Atlantic coast early on Monday, February 1, 2021 and intensified as it slowly tracked to the north-northeast.
• Winter Storm in New York, February 1 to 3, 202117 eventsA complex long duration winter storm system affected Central New York from late in the day of January 31st through around midday February 3rd.
• Winter Weather in Pennsylvania, February 1 to 3, 202117 eventsDuring the morning of January 31st, weakening low pressure moved northward into the lower Ohio Valley. Frontogenetic forcing allowed for some higher snow rates during the morning and early afternoon hours, particularly in the higher elevations.
• Winter Storm and High Wind in New Jersey, February 1 to 2, 202155 kt wind · 16 eventsA major winter storm affected the mid-Atlantic from January 31 to February 2, 2021. Low pressure tracking out of the Ohio Valley weakened as it moved slowly eastward on the 31st.
• Winter Weather in West Virginia, February 1 to 3, 202111 eventsDuring the morning of January 31st, weakening low pressure moved northward into the lower Ohio Valley. Frontogenetic forcing allowed for some higher snow rates during the morning and early afternoon hours, particularly in the higher elevations.
• Winter Storm in New Jersey, February 1 to 3, 20219 eventsLow pressure developed over the Ohio Valley and Middle Atlantic on Sunday, January 31, 2021. The low then consolidated along the Middle Atlantic coast early on Monday, February 1, 2021 and intensified as it slowly tracked to the north-northeast.
• Winter Weather in Ohio, February 1 to 2, 20219 eventsDuring the morning of January 31st, weakening low pressure moved northward into the lower Ohio Valley. Frontogenetic forcing allowed for some higher snow rates during the morning and early afternoon hours, particularly in the higher elevations.
• Winter Storm in Pennsylvania, February 1 to 3, 20218 eventsA complex long duration winter storm system affected Northeast Pennsylvania from around midday January 31st through the early morning of February 3rd.
• Winter Storm in Connecticut, February 1 to 3, 20218 eventsLow pressure developed over the Ohio Valley and Middle Atlantic on Sunday, January 31, 2021. The low then consolidated along the Middle Atlantic coast early on Monday, February 1, 2021 and intensified as it slowly tracked to the north-northeast.
• Winter Storm in Maryland, February 1 to 2, 20214 eventsClosed low pressure slowly tracked into the Ohio Valley on the 31st before transferring its energy to low pressure off the Mid-Atlantic Coast on the 1st of February. The coastal low slowly tracked northeast while intensifying through midday on February the 2nd.
• Winter Weather in Kentucky, February 1 to 2, 202128 eventsMoist northerly flow and cold temperatures lead to ideal conditions for snow across eastern Kentucky to begin the month of February 2021. On average, 1-3 inches of snow fell across eastern Kentucky from late Sunday night through early Tuesday morning.
• Winter Weather in Tennessee, February 1, 202118 eventsLight snow fell across the eastern half of Middle Tennessee during the morning hours on February 1. Up to 1.5 inches of snow was reported in several counties.
• Winter Storm and Winter Weather in New York, February 1 to 2, 202125 eventsModerate to heavy snow developed to the northwest of a slow-moving coastal low on February 1st.
• Winter Storm in Alaska, February 1 to 2, 20212 eventsAn arctic jet streak caused a low to develop over the northern gulf and track SE along the outer coast. Bands of heavy snow fell across the region with wide variations in accumulation.
• Winter Storm in Connecticut, February 1 to 2, 20212 eventsModerate to heavy snow developed to the northwest of a slow-moving coastal low on February 1st.
• Extreme Cold in Alaska, February 1 to 5, 20211 eventCombination of cold temperatures and strong winds produced dangerous wind chills around 70 below along the North Slope from February 1st to the 5th 2021.
• Blizzard in Alaska, February 1 to 3, 20211 eventA strong low pressure system entered the Bering Strait on the 31th of January. Blizzard conditions were reported along the Bering strait on January 31th and continued into the 2nd of February 2021.| Zone 213: Blizzard conditions reported at the Gamble AWOS with a peak gust of 47…
• Heavy Snow in Connecticut, February 1 to 2, 20213 eventsA mid level trough over the Appalachians produced a secondary surface low pressure near the mid-Atlantic coast. High pressure over Hudson Bay allowed low level cold air to stay in place initially. Most of the region received 8 to 12 inches of snow.
• Winter Storm in Massachusetts, February 1 to 2, 20212 eventsModerate to heavy snow developed to the northwest of a slow-moving coastal low on February 1st.
• Heavy Snow in Tennessee, February 1 to 2, 20215 eventsSnow began to fall across much of East Tennessee on the morning of February 1 as a low pressure system moved across the region. As a northwest flow developed, snow began to intensify in the mountains that evening, and continued through the night.
• Heavy Snow in Virginia, February 1 to 2, 20211 eventSnow began to fall across much of southwest Virginia on the morning of February 1 as a low pressure system moved across the region. As a northwest flow developed, snow began to intensify in the mountains that evening, and continued through the night.
• Winter Storm in Rhode Island, February 1 to 2, 2021$2,000 · 3 eventsA mid level trough over the Appalachians produced a secondary surface low pressure near the mid-Atlantic coast. High pressure over Hudson Bay allowed low level cold air to stay in place initially.
• Winter Storm in Vermont, February 1 to 2, 20213 eventsModerate to heavy snow developed to the northwest of a slow-moving coastal low on February 1st.
• Heavy Snow in North Carolina, February 1 to 2, 20216 eventsSnow showers developed across the Tennessee border counties of North Carolina as strong northwest winds developed in the wake of a cold front, pushing moist and cold air up the western slopes of the mountains.
• Winter Weather in North Carolina, February 1 to 2, 20212 eventsSnow showers developed across the Tennessee border counties of North Carolina as strong northwest winds developed in the wake of a cold front, pushing moist and cold air up the western slopes of the mountains.
• Winter Storm in New Hampshire, February 1 to 2, 202115 eventsLow pressure moved into the Ohio Valley on the 31st, where it began to encounter resistance from high pressure anchored over James Bay. As the upper trough continued east, secondary low pressure began to develop along the warm front near the Outer Banks.
• Winter Storm in Maine, February 1 to 2, 202118 eventsLow pressure moved into the Ohio Valley on the 31st, where it began to encounter resistance from high pressure anchored over James Bay. As the upper trough continued east, secondary low pressure began to develop along the warm front near the Outer Banks.
• Winter Storm in North Carolina, February 1 to 2, 20212 eventsA deep upper level low pressure system was observed stretching southward from the Great Lakes along the Appalachian chain, supporting deepening surface low pressure off the mid-Atlantic coast. This resulted in sustained northwesterly wind flow across the central Appalachians.
• Winter Storm and Winter Weather in Vermont, February 1 to 2, 2021$120,000 · 16 eventsThe same storm that brought 6+ inches of rainfall and flash flooding to California as well as 6+ feet to the Sierra Nevada late the previous week moved into the Great Lakes on January 31st and February 1st.
• Winter Storm and High Wind in Virginia, February 1 to 2, 20211 injured · $110,000 · 56 kt wind · 2 eventsA deep upper level low pressure system was observed stretching southward from the Great Lakes along the Appalachian Chain, supporting deepening surface low pressure off the mid-Atlantic coast. This resulted in sustained northwesterly wind flow across the central Appalachians.
• Winter Storm and Coastal Flood in Maine, February 1 to 3, 202116 eventsIntensifying low pressure tracked across the Gulf of Maine and Downeast Maine during the 2nd...exiting across the Maritimes during the 3rd.
• Winter Storm in California, February 1 to 2, 20214 eventsA trough brought Valley rain and mountain snow to northern California February 1st through the 3rd. Snow amounts generally ranged from 2 to 16 inches across the Sierra and southern Cascades and caused difficult travel conditions for motorists.
• Winter Storm and Winter Weather in New York, February 2 to 3, 2021$80,000 · 9 eventsThe same storm that brought 6+ inches of rainfall and flash flooding to California as well as 6+ feet to the Sierra Nevada late the previous week moved into the Great Lakes on January 31st and February 1st.
• Winter Storm in New York, February 2 to 3, 20217 eventsA stacked coastal storm threw Atlantic moisture back across western and north central New York Tuesday (Groundhog Day) and into Wednesday. Strong mesoscale banding occurred over the North Country and on the western edge of the mid-upper level low.
• Cold in North Carolina, February 2 to 3, 20218 eventsVery gusty northwest winds developing in the wake of a cold front combined with air temperatures in the teens and single digits to yield wind chill values in the -5 to -20 range across the high elevations of the Blue Ridge mountains from the evening of the 2nd into the morning…
• Winter Weather in West Virginia, February 2 to 3, 20212 eventsCold air flowing over the mountains caused snow to develop along and west of the Allegheny Front. Snowfall totaled up to 3.3 inches in Bayard, WV.
• Winter Storm in Maryland, February 2 to 3, 20211 eventCold air picked up moisture around low pressure, and this resulted in snow for locations along and west of the Allegheny Front. Snowfall totaled up to 6 inches near McHenry.
• Winter Storm in Alaska, February 3, 20211 eventMoist marine air over ran cold air that had moved in over Southeast Alaska from the interior of the continent. This created a snowfall event with high snow ratios.
• Blizzard in Alaska, February 3 to 4, 20211 eventA strong low pressure system entered the Bering Strait during the morning hours of the 3rd of February. Blizzard conditions were reported along the Bering strait on February 3rd and continued into the early morning hours of February 4th 2021.
• Cold in Illinois, February 3, 20211 death · 1 eventA 96 year old woman who used a wheelchair, was left on a transport bus in Westmont during the afternoon of February 2nd. She was found unresponsive on the bus around 1030 am on February 3rd and then pronounced dead.
• Heavy Snow and High Wind in Colorado, February 3 to 4, 202156 kt wind · 8 eventsA quick moving upper level system dropped southeast across Colorado during this time|period. Ahead of this system, westerly flow increased across the area and helped support a period of strong winds along parts of the higher terrain and the plains.
• Winter Weather in South Dakota, February 3 to 4, 202112 eventsA very strong cold front was accompanied by a narrow band of moderate to heavy snowfall, as well as wind gusting to 30 to 45 mph.
• Winter Weather in Nebraska, February 3 to 4, 202124 eventsBetween the late evening of Wednesday the 3rd and the early morning of Thursday the 4th, a quick-hitting system brought a somewhat-surprisingly-potent combination of a brief wintry mix, light snow accumulation, moderately-strong north winds and falling temperatures to most all…
• Winter Weather in Minnesota, February 3 to 4, 20218 eventsA very strong cold front was accompanied by a narrow band of moderate to heavy snowfall, as well as wind gusting to 30 to 45 mph.
• Winter Weather in Iowa, February 4, 202111 eventsA very strong cold front was accompanied by a narrow band of moderate to heavy snowfall, as well as wind gusting to 30 to 45 mph.
• Winter Storm in Wisconsin, February 4 to 5, 202121 eventsLow pressure moving across the western Great Lakes brought a wintry mix and then heavy snow. Snowfall totals of 6 to 12 inches were recorded across much of the region.
• Winter Weather in Nebraska, February 4, 20212 eventsA very strong cold front was accompanied by a narrow band of moderate to heavy snowfall, as well as wind gusting to 30 to 45 mph.
• Blizzard in Iowa, February 4, 202123 eventsA western upper level trough underwent lee cyclogenesis over the central Rockies and into the central Plains.
• Heavy Snow in Wisconsin, February 4 to 5, 20215 eventsA cold front moving across the Northland lead to the development of widespread snowfall across the region. This system was originally expected to move through quickly but slowed down as it moved into northwest Wisconsin.
• Winter Storm in Michigan, February 4 to 5, 202116 eventsAbundant moisture drawn in ahead of a cold front resulted in a heavy lake enhanced snow event across much of Upper Michigan from the 4th into the 5th.
• Blizzard and Winter Storm in Iowa, February 4, 20216 eventsPortions of northeast Iowa suffered through blizzard conditions during the afternoon of February 4th.
• Blizzard and Winter Storm in Iowa, February 4, 202119 eventsA fast moving arctic cold front brought dangerous conditions to portions of the area. Rain, mixed with freezing rain and sleet moved into eastern Iowa during the early morning, then as a cold front moved in from the west during the mid morning, the rain switched to snow.
• Winter Storm and Winter Weather in Wisconsin, February 4, 20217 eventsA winter storm moved across the region on February 4th. This storm dropped between 4 and 9 inches of snow that caused roads to become snow covered and slippery. Numerous schools across the area canceled classes for the day.
• Winter Weather in Wisconsin, February 4, 202120 eventsA surge of warm air advection ahead of an approaching cold front brought widespread precipitation to southern Wisconsin. Precipitation started as rain and freezing rain in spots, but transitioned over to snow during the afternoon and evening hours.
• Winter Storm in Illinois, February 4, 20216 eventsA fast moving arctic cold front brought dangerous conditions to portions of the area. Rain, mixed with freezing rain and sleet moved into western Illinois during the morning, then as a cold front moved in from the west during the mid morning, the rain switched to snow.
• Winter Storm and Winter Weather in Illinois, February 4 to 5, 202122 eventsA period of wet snow fell across portions of northern Illinois during the early to mid afternoon of February 4th. A strong cold front moved across the area in the early evening, bringing much colder air, strong winds and periods of heavy fluffy snow.
• Winter Weather in Indiana, February 4 to 5, 20211 death · 1 injured · 7 eventsAn area of snow lifted south to north across northern Indiana during the afternoon of February 4th. Brief snowfall rates of 1 to 2 inches per hour were observed from mid afternoon into early evening.
• Winter Weather in Ohio, February 4 to 5, 20213 eventsAn area of snow lifted south to north across northern Indiana during the afternoon of February 4th. Brief snowfall rates of 1 to 2 inches per hour were observed from mid afternoon into early evening.
• Winter Weather in South Dakota, February 4 to 5, 20211 eventAn upper level system brought a prolonged period of light snow to the northern Black Hills. Amounts of three to seven inches were reported over the higher elevations west of Lead to Cheyenne Crossing.
• Winter Storm in Michigan, February 4 to 5, 202116 eventsAn elongated area of low pressure quickly strengthened over the Great Lakes from 2/4 to 2/5, providing favorable forcing to generate accumulating snow and strong wind gusts across the area.
• Winter Weather in Wyoming, February 4 to 5, 20211 eventAn upper level system brought a period of prolonged light snow to parts of the Wyoming Black Hills. Snowfall amounts of three to five inches were received in the Sundance area, as well as near Four Corners.

The snowstorm of December 30, 2020 to January 3, 2021The snowstorm of February 13 to 16, 2021Snow nowEvery winter storm filed

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