A low pressure system developed over the northern Gulf Coast on the evening of November 29 and moved northeast into the Ohio Valley on November 30. This system deepened considerably as it reached western New York on December 1 before departing into eastern Canada that evening, ending snow across much of the region. As the low tracked northeast towards Pennsylvania on November 30, widespread rain overspread the area, transitioning to snow from west to east through the day. The transition took longer over portions of Northeast Ohio, including the Cleveland metropolitan area, where warmer air held on through the evening hours, preventing snow until late on the 30th. Once the transition from rain to snow occurred overnight, snow was persistent with half inch to one inch per hour snowfall rates of dense, wet snow. Snow accumulation totals that occurred overnight from the 30th into the 1st were 4 to 12 inches of synoptic snowfall across North Central and Northeast Ohio by Noon. This first round of snow caused considerable issues for the morning commute on December 1 with numerous vehicle incidents and schools were closed across the region. As the low departed to the northeast, the snow event transitioned to an efficient lake-enhanced snow event and snow bands focused on the traditional primary and secondary snow belt of Northeast Ohio. Additional accumulations of 4 to 12 inches of new snow occurred during this phase of the event. In the end, widespread snow amounts of 8 to 24 inches fell across Northeast Ohio with the maximum in eastern Cuyahoga, southern Lake, northern Geauga, western Ashtabula counties. The highest snowfall measurement in Ohio was 26.3 inches by a trained snow spotter in Hambden Township in northern Geauga County. Snowfall totals from area climate sites include: 10.1 inches at Cleveland Hopkins Airport, 8.0 inches at Youngstown-Warren Airport, 5.6 inches at Mansfield Lahm Airport, and 3.5 inches at Akron-Canton Airport. The 9.5 inches of snow recorded at Cleveland Hopkins Airport on December 1 was the highest daily total for the official Cleveland climate station since 10.9 inches of snow was recorded on February 4, 2009. While snowfall accumulation had a large impact for travel and business on December 1 during this winter storm, the impacts of the heavy snow load were much more significant and long-lasting across the region. The rain that occurred on November 30 froze on trees and wires when temperatures fell later in the evening. Then, the first phase of the event featured heavy, wet snow with a low snow-to-liquid ratio. This snow stuck quickly to already weighed down trees and power lines, prompting widespread tree damage, particularly to pine trees or any trees with lingering foliage, and numerous power outages. During its peak, there were over 90,000 power outages reported in Ohio, mostly in Cuyahoga, Lake, Geauga, and Ashtabula counties. Some locations did not have power for one week in early December. There were no known injuries or fatalities in Ohio due to the winter storm.

Winter Storm in TRUMBULL, OHIO
From 01-DEC-20 00:00:00 to 01-DEC-20 23:00:00 (EST-5)
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Rain changed over to snow during the evening hours of November 30 in Northeast Ohio, as low pressure moved just east of the area. During the early morning hours of December 1, heavy, wet snow overspread the region with visibility dropping to one-quarter of a mile or less and snowfall rates up to one inch per hour. Travel was severely disrupted by this storm as heavy snow quickly accumulated on area roadways and any pre-treatment efforts were hampered by rain earlier on November 30. Due to the heavy, wet nature of the snow and only modest wind speeds of 10 to 15 mph, blowing and drifting snow was not a big issue during this event. However, snow easily collected on area trees, especially area evergreen trees, and the weight of the snow allowed for trees to fall onto area roads, power lines, and even some buildings. Schools and several businesses closed on December 1 and 2 due to the weather conditions. In Trumbull County, snowfall totals ranged from 6 to 14 inches of snow for the event. A peak total of 14 inches of snow was observed in Kinsman Township. Other selected snowfall totals include: 11.5 inches in Southington, 10.2 inches in Cortland, 8 inches at Mosquito Creek Lake and Youngstown-Warren Airport, 7 inches in Leavittsburg, 6.7 inches in Newton Falls, and 6 inches in Warren.

Winter Storm in CUYAHOGA, OHIO
From 01-DEC-20 00:00:00 to 01-DEC-20 21:00:00 (EST-5)
Property damage: 300.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Rain changed over to snow during the evening hours of November 30 in Northeast Ohio, as low pressure moved just east of the area. During the early morning hours of December 1, heavy, wet snow overspread the region with visibility dropping to one-quarter of a mile or less and snowfall rates up to one inch per hour. Travel was severely disrupted by this storm as heavy snow quickly accumulated on area roadways and any pre-treatment efforts were hampered by rain earlier on November 30. Due to the heavy, wet nature of the snow and only modest wind speeds of 10 to 15 mph, blowing and drifting snow was not a big issue during this event. However, snow easily collected on area trees, especially area evergreen trees, and the weight of the snow allowed for trees to fall onto area roads, power lines, and even some buildings. Tree damage was significant across Cuyahoga County and up to 20,000 customers were without power by the late morning of December 1 due to trees falling onto power lines. Power was not restored to some residences for several days. Schools and several businesses closed on December 1 and 2 due to the weather conditions. In Cuyahoga County, snowfall totals ranged from 10 to 22 inches of snow for the event. A peak total of 22 inches of snow was observed in Lyndhurst. Other selected snowfall totals include: 20 inches in Chagrin Falls, 18 inches in Beachwood, Shaker Heights and Solon, 17.5 inches in Parma, 17.3 inches in Seven Hills, 14.7 inches in Brecksville, 14.6 inches in North Royalton, 14.3 inches in Westlake, 12.7 inches in the WestPark neighborhood of Cleveland, 12 inches in Euclid and the Old Brooklyn neighborhood of Cleveland, and 10.1 at both Cleveland Hopkins International Airport and the Kamm���s Corners neighborhood of Cleveland.

Winter Storm in SUMMIT, OHIO
From 01-DEC-20 00:00:00 to 01-DEC-20 21:00:00 (EST-5)
Property damage: 65.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Rain changed over to snow during the evening hours of November 30 in Northeast Ohio, as low pressure moved just east of the area. During the early morning hours of December 1, heavy, wet snow overspread the region with visibility dropping to one-quarter of a mile or less and snowfall rates up to one inch per hour. Travel was severely disrupted by this storm as heavy snow quickly accumulated on area roadways and any pre-treatment efforts were hampered by rain earlier on November 30. Due to the heavy, wet nature of the snow and only modest wind speeds of 10 to 15 mph, blowing and drifting snow was not a big issue during this event. However, snow easily collected on area trees, especially area evergreen trees, and the weight of the snow allowed for trees to fall onto area roads, power lines, and even some buildings. Schools and several businesses closed on December 1 and 2 due to the weather conditions. In Summit County, snowfall totals ranged from 4 to 15 inches of snow for the event. A peak total of 15.2 inches of snow was observed in Sagamore Hills. Other selected snowfall totals include: 14 inches in Boston Heights, 10.9 inches in Bath Township, 8.2 inches in Cuyahoga Falls, 7.5 inches in Munroe Falls, 6.7 inches in Fairlawn, 5.8 inches in Tallmadge, 5.2 inches in Akron, 4.3 inches in New Franklin, and 3.5 inches at the Akron-Canton Regional Airport in Green.

Winter Storm in PORTAGE, OHIO
From 01-DEC-20 00:00:00 to 01-DEC-20 21:00:00 (EST-5)
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Rain changed over to snow during the evening hours of November 30 in Northeast Ohio, as low pressure moved just east of the area. During the early morning hours of December 1, heavy, wet snow overspread the region with visibility dropping to one-quarter of a mile or less and snowfall rates up to one inch per hour. Travel was severely disrupted by this storm as heavy snow quickly accumulated on area roadways and any pre-treatment efforts were hampered by rain earlier on November 30. Due to the heavy, wet nature of the snow and only modest wind speeds of 10 to 15 mph, blowing and drifting snow was not a big issue during this event. However, snow easily collected on area trees, especially area evergreen trees, and the weight of the snow allowed for trees to fall onto area roads, power lines, and even some buildings. Schools and several businesses closed on December 1 and 2 due to the weather conditions. In Portage County, snowfall totals ranged from 5 to 17 inches of snow for the event. A peak total of 17 inches of snow was observed in Hiram. Other selected snowfall totals include: 15.8 inches in Mantua, 12.5 inches in Aurora, 9.8 inches in Streetsboro, 7.4 inches in Kent, and 4.8 inches in Mogadore.

Winter Storm in HURON, OHIO
From 01-DEC-20 00:00:00 to 01-DEC-20 20:00:00 (EST-5)
Property damage: 35.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Rain changed over to snow during the early afternoon hours of November 30 in North Central Ohio, as low pressure moved just east of the area. During the early morning hours of December 1, heavy, wet snow overspread the region with visibility dropping to one-quarter of a mile or less and snowfall rates up to one inch per hour. Travel was severely disrupted by this storm as heavy snow quickly accumulated on area roadways and any pre-treatment efforts were hampered by rain earlier on November 30. Due to the heavy, wet nature of the snow and only modest wind speeds of 10 to 15 mph, blowing and drifting snow was not a big issue during this event. However, snow easily collected on area trees, especially area evergreen trees, and the weight of the snow allowed for trees to fall onto area roads, power lines, and even some buildings. Schools and several businesses closed on December 1 and 2 due to the weather conditions. In Huron County, snowfall totals ranged from 6 to 7 inches of snow for the event. A peak total of 7.2 inches of snow was observed near New London. Other selected snowfall totals include: 7 inches in Norwalk and 6.6 inches in Bellevue.

Winter Storm in LORAIN, OHIO
From 01-DEC-20 00:00:00 to 01-DEC-20 20:00:00 (EST-5)
Property damage: 120.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Rain changed over to snow during the afternoon hours of November 30 in North Central Ohio, as low pressure moved just east of the area. During the early morning hours of December 1, heavy, wet snow overspread the region with visibility dropping to one-quarter of a mile or less and snowfall rates up to one inch per hour. Travel was severely disrupted by this storm as heavy snow quickly accumulated on area roadways and any pre-treatment efforts were hampered by rain earlier on November 30. Due to the heavy, wet nature of the snow and only modest wind speeds of 10 to 15 mph, blowing and drifting snow was not a big issue during this event. However, snow easily collected on area trees, especially area evergreen trees, and the weight of the snow allowed for trees to fall onto area roads, power lines, and even some buildings. Schools and several businesses closed on December 1 and 2 due to the weather conditions. Ten cars of a train also derailed in Amherst on the afternoon of December 1 due to the snow. In Lorain County, snowfall totals ranged from generally 6 to 15 inches of snow for the event. A peak total of 15.2 inches of snow was observed in North Ridgeville. Other selected snowfall totals include: 14.4 inches in Elyria, 11.5 inches in Oberlin, and 6 inches in Wellington. Lesser amounts occurred near the immediate lakeshore with only 4.7 inches in Sheffield Lake.

Winter Storm in MEDINA, OHIO
From 01-DEC-20 00:00:00 to 01-DEC-20 20:00:00 (EST-5)
Property damage: 55.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Rain changed over to snow during the evening hours of November 30 in Northeast Ohio, as low pressure moved just east of the area. During the early morning hours of December 1, heavy, wet snow overspread the region with visibility dropping to one-quarter of a mile or less and snowfall rates up to one inch per hour. Travel was severely disrupted by this storm as heavy snow quickly accumulated on area roadways and any pre-treatment efforts were hampered by rain earlier on November 30. Due to the heavy, wet nature of the snow and only modest wind speeds of 10 to 15 mph, blowing and drifting snow was not a big issue during this event. However, snow easily collected on area trees, especially area evergreen trees, and the weight of the snow allowed for trees to fall onto area roads, power lines, and even some buildings. Schools and several businesses closed on December 1 and 2 due to the weather conditions. In Medina County, snowfall totals ranged from 4 to 13 inches of snow for the event. A peak total of 13.6 inches of snow was observed in Brunswick. Other selected snowfall totals include: 12.8 inches in Hinckley, 8.5 inches in Medina, 8 inches in Lodi, 5 inches in Wadsworth, and 4.3 inches in Homerville.

Winter Storm in ERIE, OHIO
From 01-DEC-20 00:00:00 to 01-DEC-20 20:00:00 (EST-5)
Property damage: 35.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Rain changed over to snow during the early afternoon hours of November 30 in North Central Ohio, as low pressure moved just east of the area. During the early morning hours of December 1, heavy, wet snow overspread the region with visibility dropping to one-quarter of a mile or less and snowfall rates up to one inch per hour. Travel was severely disrupted by this storm as heavy snow quickly accumulated on area roadways and any pre-treatment efforts were hampered by rain earlier on November 30. Due to the heavy, wet nature of the snow and only modest wind speeds of 10 to 15 mph, blowing and drifting snow was not a big issue during this event. However, snow easily collected on area trees, especially area evergreen trees, and the weight of the snow allowed for trees to fall onto area roads, power lines, and even some buildings. Schools and several businesses closed on December 1 and 2 due to the weather conditions. In Erie County, snowfall totals ranged from 6 to 11 inches of snow for the event. A peak total of 11.4 inches of snow was observed in Florence Township. Other selected snowfall totals include: 8.2 inches in Berlin Heights, 8 inches in Milan, 7 inches in Huron, 6.3 inches in Castalia, and 6.2 inches in Sandusky.

Winter Storm in GEAUGA, OHIO
From 01-DEC-20 00:00:00 to 01-DEC-20 21:00:00 (EST-5)
Property damage: 500.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Rain changed over to snow during the evening hours of November 30 in Northeast Ohio, as low pressure moved just east of the area. During the early morning hours of December 1, heavy, wet snow overspread the region with visibility dropping to one-quarter of a mile or less and snowfall rates up to one inch per hour. Travel was severely disrupted by this storm as heavy snow quickly accumulated on area roadways and any pre-treatment efforts were hampered by rain earlier on November 30. Due to the heavy, wet nature of the snow and only modest wind speeds of 10 to 15 mph, blowing and drifting snow was not a big issue during this event. However, snow easily collected on area trees, especially area evergreen trees, and the weight of the snow allowed for trees to fall onto area roads, power lines, and even some buildings. Tree damage was extreme across Geauga County and up to 25,000 customers were without power by the late morning of December 1 due to trees falling onto power lines. Power was not restored to most residences for several days. Schools and several businesses closed on December 1 and 2 due to the weather conditions and some for the rest of the week due to power issues. In Geauga County, snowfall totals ranged from 15 to 26 inches of snow for the event. A peak total of 26.3 inches of snow was observed in Hambden Township. Other selected snowfall totals include: 24.8 inches in Chardon, 24.4 inches in Thompson Township, 22.2 inches in Burton, 20.5 inches in Montville, 17 inches in Middlefield, and 15.7 inches in South Russell.

Winter Storm in LAKE, OHIO
From 01-DEC-20 00:00:00 to 01-DEC-20 21:00:00 (EST-5)
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Rain changed over to snow during the evening hours of November 30 in Northeast Ohio, as low pressure moved just east of the area. During the early morning hours of December 1, heavy, wet snow overspread the region with visibility dropping to one-quarter of a mile or less and snowfall rates up to one inch per hour. Travel was severely disrupted by this storm as heavy snow quickly accumulated on area roadways and any pre-treatment efforts were hampered by rain earlier on November 30. Due to the heavy, wet nature of the snow and only modest wind speeds of 10 to 15 mph, blowing and drifting snow was not a big issue during this event. However, snow easily collected on area trees, especially area evergreen trees, and the weight of the snow allowed for trees to fall onto area roads, power lines, and even some buildings. Tree damage was significant across Lake County and up to 15,000 customers were without power by the late morning of December 1 due to trees falling onto power lines. Power was not restored to some residences for several days. Schools and several businesses closed on December 1 and 2 due to the weather conditions. In Lake County, snowfall totals ranged from 8 to 17 inches of snow for the event. A peak total of 16.9 inches of snow was observed in Concord Township. Other selected snowfall totals include: 14.3 inches in Willoughby Hills, 12 inches in Kirtland Hills, 11.6 inches in Willoughby, and 9.5 inches in Mentor.

Winter Storm in ASHTABULA, OHIO
From 01-DEC-20 00:00:00 to 01-DEC-20 23:00:00 (EST-5)
Property damage: 75.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Rain changed over to snow during the evening hours of November 30 in Northeast Ohio, as low pressure moved just east of the area. During the early morning hours of December 1, heavy, wet snow overspread the region with visibility dropping to one-quarter of a mile or less and snowfall rates up to one inch per hour. Travel was severely disrupted by this storm as heavy snow quickly accumulated on area roadways and any pre-treatment efforts were hampered by rain earlier on November 30. Due to the heavy, wet nature of the snow and only modest wind speeds of 10 to 15 mph, blowing and drifting snow was not a big issue during this event. However, snow easily collected on area trees, especially area evergreen trees, and the weight of the snow allowed for trees to fall onto area roads, power lines, and even some buildings. Tree damage was notable across Ashtabula County and up to 6,000 customers were without power by the late morning of December 1 due to trees falling onto power lines. Power was not restored to some residences for several days. Schools and several businesses closed on December 1 and 2 due to the weather conditions. In Ashtabula County, snowfall totals ranged from 11 to 22 inches of snow for the event. A peak total of 22 inches of snow was observed in Trumbull Township. Other selected snowfall totals include: 21.4 inches in Cherry Valley, 20.4 inches in Orwell, 17.6 inches in Harpersfield Township, 17.5 inches in Pierpont, 14.1 inches in Jefferson, 13 inches in Kelloggsville, and 11.3 inches in Monroe Township.