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Thursday, February 17, 2022

Winter Weather Advisory for Wyoming County:
Ice jam raises concerns in Attica; Route 258 closed in Groveland

Route 19A between Denton and Devaney roads in Portageville will be shut down due to flooding, according to an advisory from NY-Alert.

UPDATE, 7:20 p.m.: Route 258 between Route 36 and Route 63 in the town of Groveland is closed due to flooding, according to an advisory from the state Department of Transportation via NY-Alert.

The road is expected to remain closed until Sunday due to flooding.

Route 258, also known as Flats Road, is subject to frequent closings during periods of snow melts.

UPDATE, 7 p.m.: The Attica Fire Department said tonight in a Facebook post that it is monitoring an ice jam on Tonawanda Creek and warning about possible evacuations.

“We are concerned about an ice jam that may let go and could cause significant flooding to the Water Street, North Washington, lower half of North Street and Exchange St areas,” the department said.

“Please be on heightened alert for possible evacuations. We are monitoring the situation,” the post said.

Flood watches and warnings continue across the region tonight as warm temperatures and significant rain contributed to high flows from rain and snowmelt in area rivers, creeks and low-lying agriculture and urban areas. Potential ice jams through tonight may result in more significant flooding localized near ice jams, according to the National Weather Service.

UPDATE, 2 p.m.: A dramatic change in weather with snow and ice is on the horizon, prompting the National Weather Service to upgrade and expand on advisories.

A winter storm warning will be in effect from 5 to 9 a.m. in Orleans and Niagara counties. The winter weather advisory is no longer in effect.

Heavy mixed precipitation and snow expected. Total snow accumulations of 4 to 7 inches and ice accumulations of up to one-tenth of an inch. Winds gusting as high as 35 mph. Rain will change over to freezing rain and sleet early this evening and persist through the evening hours. Mixed precipitation will change to moderate snow late this evening and continue into Friday morning.

Travel could be very difficult. The combination of ice, snow, and rapidly falling temperatures will result in very difficult conditions for driving by Friday morning. Standing water from earlier rainfall will also pose a risk of icy conditions tonight into Friday morning. Snow will reduce visibility tonight. The snow will taper off early Friday morning, but roads will remain very slippery through the Friday morning commute, the Weather Service said.

The following flood warnings are for high flows from rain and snowmelt. Potential ice jams through tonight may result in more significant flooding localized near ice jams.

The Weather Service has also issued flood warnings for the following rivers:

■ Genesee River At Wellsville affecting Wyoming, Livingston and Allegany Counties.
■ Genesee River At Portageville affecting Wyoming, Livingston and Allegany Counties.
■ Black Creek At Churchville affecting Monroe and Genesee Counties.
■ Cattaraugus Creek At Gowanda affecting Chautauqua, Erie, Cattaraugus and Wyoming Counties.
■ Ellicott Creek Near Williamsville affecting Erie and Genesee Counties.
■ Tonawanda Creek At Batavia affecting Wyoming, Erie, Niagara and Genesee Counties.

Heavy rain will fall on a deep primed snowpack leading to the melt increasing. Flows in rivers will increase quickly and reach critical levels.

■ For the Genesee River including Wellsville, Portageville, Mount Morris Dam, Avon, Rochester, Honeoye Falls: Minor flooding is forecast.
■ For the Black Creek including Churchville: Minor flooding is forecast.
■ For the Cattaraugus Creek including Gowanda: Minor flooding is forecast.
■ For the Ellicott Creek including Williamsville: Minor flooding is forecast.
■ For the Tonawanda Creek including Attica, Batavia, Rapids: Minor flooding is forecast.

A flood warning is in effect to Saturday morning for the Tonawanda Creek at Batavia. Flood stage is 9 feet, which brings some flooding to Batavia, possibly affecting Kibbe Park, Walnut Street, and Law Street. Flooding in rural areas of Alexander and the lowlands of the Alabama Swamps with some road closures is also likely, according to the Weather Service.

At 11 a.m. Thursday, the river was at 2.9 feet. The river was expected to rise above flood stage on Friday morning, creating early Friday afternoon at 9.7 feet before falling below flood stage early Saturday morning.

A flood warning will be in effect from Friday afternoon to late Sunday morning for Black Creek at Churchville where minor flooding is forecast.

Flood stage is 6 feet, which sees more widespread agricultural land flooding, some backyard and basement flooding Churchville to Chili but minimal damages, according to the Weather Service.

At 11 a.m. Thursday, the creek was at 2.8 feet. The creek is expected to rise above flood stage early Friday afternoon to a crest of 6.8 feet Saturday morning. It will then fall below flood stage early Sunday morning, the Weather Service said.

A flood warning will be in effect from late tonight to Friday afternoon for Buffalo Creek at Gardenville, which would affect Wyoming and Erie counties.

Flood stage is 7 feet, which brings minor flooding along the low-lying areas next to Buffalo Creek, especially around the farm fields downstream from Union Road, according to the Weather Service.

At 11:15 a.m. Thursday the creek was at 3.6 feet. The river is expected to rise above flood stage just after midnight tonight to a crest of 7.9 feet Friday morning. It will then fall below flood stage late Friday morning.

Flood watches continue through Friday evening for Genesee, Livingston, Orleans and Wyoming counties, and also Allegany, Cattaraugus, Chautauqua, Monroe, Niagara, and northern and southern Erie counties.

Winter weather advisories –now with increased snow totals – begin tonight across the four-county GLOW region as mixed precipitation and snow is expected.

The National Weather Service has issued a winter weather advisory that begins at 7 tonight for Genesee, Erie, Monroe and Chautauqua counties. The advisory will be in effect until 9 a.m. Friday.

Total snow accumulations of 3 to 5 inches – up an inch from an earlier advisory – and ice accumulations of one-tenth to two-tenths of an inch are possible. Winds may gust as high as 35 mph, according to the Weather Service.

Travel will be very difficult, the Weather Service said.

The combination of ice, snow, and rapidly falling temperatures will result in icy and snow covered roads. Snow will reduce visibility tonight. The snow will taper off early Friday morning, but roads may remain very slippery through the morning commute, the Weather Service said.

A separate advisory begins at 9 tonight for Wyoming, Livingston, Ontario, Cattaraugus and Allegany counties. The advisory will remain in effect until 9 a.m. Friday.

Total snow accumulations of up to 2 inches and ice accumulations of around one-tenth of an inch are possible. Winds may gust as high as 35 mph, according to the Weather Service.



Travel may be very difficult, the Weather Service said.

The combination of ice, light snow, and rapidly falling temperatures will result in icy and snow covered roads. The precipitation will taper off early Friday morning, but roads may remain very slippery through the morning commute, the Weather Service said.

Periods of snow, sleet or freezing rain will result in slippery roads and limited visibilities. Slow down and use caution while driving.

A flood watch remains in effect through Friday evening for a portion of western New York, including Genesee, Livingston, Orleans and Wyoming counties. Other counties in the watch include Allegany, Cattaraugus, Chautauqua, Monroe, Niagara, and northern and southern Erie counties.

There is increasing confidence that excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. The greatest threat for flooding will be in ice jam prone areas, such as the Buffalo area creeks and near Sunset Bay on Cattaraugus creek, the Weather service said.

Ice will begin to break up on area creeks through Thursday morning, with a risk of ice jams at typically vulnerable locations. Then steadier rain will move in Thursday, resulting in more significant and widespread rises on area creeks and rivers. The system will generate between an inch and inch and a half of rain before changing over to snow and ending Thursday night, the Weather Service said.

The greatest risk for flooding is Thursday night, when run-off from the rain and snow-melt will peak.

The Weather Service has also issued a flood warning for Buffalo Creek near Gardenville and Cayuga Creek near Lancaster, which may affect both Wyoming and Erie counties.

A warning has also been issued for Cazenovia Creek near Ebenezer, affecting Erie County.

The warning will be in effect from this evening through Friday evening.

The flood warnings are for high flows from rain and snowmelt. Potential ice jams later today and tonight may result in more significant flooding localized near ice jams.

Moderate flooding is forecast for Buffalo Creek, while minor flooding is forecast for Cayuga and Cazenovia creeks, the Weather Service said.

Flood stage for Cayuga Creek is 8 feet, bringing minor flooding low lying areas of Lancaster and Alden. At 5:30 a.m. Thursday the stage was 5.3 feet. The river is expected to rise above flood stage this evening to a crest of 8.5 feet Friday morning. It will then fall below flood stage early Friday afternoon, the Weather Service said.

A flood watch remains in effect through Friday evening for Steuben County. Other New York counties included in the watch are Broome, Chemung, Chenango, Cortland, Delaware, Madison, Oneida, Onondaga, Otsego, Schuyler, seneca, southern Cayuga, Sullivan, Tioga, Tompkins and Yates counties.

Flooding caused by rain and snowmelt is possible. Ice jams may occur, the Weather Service said.

Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations.

A winter weather advisory that includes Steuben County will be in effect from 1 to 11 a.m. Friday.

Mixed precipitation expected along with flash freeze potential. Total snow accumulations of up to one inch and ice accumulations of a light glaze are forecast, the Weather Service said.

The advisory also includes northern Oneida, Yates, Seneca, southern Cayuga, Onondaga, Madison and southern Oneida counties.

Plan on slippery road conditions. The hazardous conditions could affect the morning commute, according to the Weather Service.

A strong cold front will move through late tonight with temperatures quickly falling into the 20s. Any wet and untreated roadways and bridges could quickly freeze, the Weather Service said.

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