Town Of Hartsville
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Town of Hartsville, United States
Click any image to view larger versionPast Weather Alerts
5 of 104Dense Fog Advisory
* WHAT...Visibilities have significantly improved through the day, however widespread dense fog is e...
Dense Fog Advisory
* WHAT...Visibility as low as one quarter mile at times in dense fog. * WHERE...Niagara, Orleans, M...
Cold Weather Advisory
* WHAT...Very cold wind chills as low as 15 to 25 below expected. * WHERE...Portions of central New...
Cold Weather Advisory
* WHAT...Very cold wind chills as low as 15 to 20 below expected. * WHERE...Portions of central New...
Cold Weather Advisory
* WHAT...Very cold wind chills as low as 17 below expected tonight into Sunday. Wind chills this mor...
Past Weather Alerts for Town Of Hartsville
Dense Fog Advisory
* WHAT...Visibilities have significantly improved through the day, however widespread dense fog is expected to redevelop tonight with visibilities as low as one quarter mile at times. * WHERE...Niagara, Orleans, Monroe, Wayne, Northern Cayuga, Oswego, Jefferson, Lewis, Genesee, Wyoming, Livingston, Ontario, Chautauqua, Cattaraugus, and Allegany Counties. * WHEN...Until 7 AM EST Wednesday. * IMPACTS...Hazardous driving conditions due to low visibility. * ADDITIONAL DETAILS...The lowest visibilities are expected across the hilltops and near the eastern Great Lakes shorelines.
Dense Fog Advisory
* WHAT...Visibility as low as one quarter mile at times in dense fog. * WHERE...Niagara, Orleans, Monroe, Wayne, Northern Cayuga, Oswego, Jefferson, Lewis, Genesee, Wyoming, Livingston, Ontario, Chautauqua, Cattaraugus, and Allegany Counties. Greatest duration of dense fog expected across hill tops, and near the eastern Great Lake shorelines. * WHEN...Until 7 AM EST Wednesday. Visibilities may improve slightly this afternoon and evening before lowering again tonight. * IMPACTS...Hazardous driving conditions due to low visibility.
Cold Weather Advisory
* WHAT...Very cold wind chills as low as 15 to 25 below expected. * WHERE...Portions of central New York and northeast Pennsylvania. * WHEN...From 7 PM this evening to 9 AM EST Sunday. The below zero temperatures and wind chills will occur during the night and early morning hours. * IMPACTS...The dangerously cold wind chills as low as 15 to 25 below zero could cause frostbite on exposed skin in as little as 30 minutes. Very cold temperatures can lead to hypothermia with prolonged exposure. * ADDITIONAL DETAILS...Actual air temperature will be below zero each night through Sunday morning. The prolonged cold could cause pipes to freeze or burst. Daytime high temperatures will climb above zero with afternoon highs of 5 to 15 degrees above zero.
Cold Weather Advisory
* WHAT...Very cold wind chills as low as 15 to 20 below expected. * WHERE...Portions of central New York and northeast Pennsylvania. * WHEN...Until 9 AM EST Sunday. * IMPACTS...The dangerously cold wind chills as low as 15 to 20 below zero could cause frostbite on exposed skin in as little as 30 minutes. Very cold temperatures can lead to hypothermia with prolonged exposure. * ADDITIONAL DETAILS...Actual air temperature will be below zero each night through Sunday morning. The prolonged cold could cause pipes to freeze or burst. Daytime high temperatures will climb above zero with afternoon highs of 10 to 20 degrees above zero.
Cold Weather Advisory
* WHAT...Very cold wind chills as low as 17 below expected tonight into Sunday. Wind chills this morning will be between zero and 5 below. * WHERE...A portion of central Pennsylvania. * WHEN...From 7 PM this evening to 10 AM EST Sunday. * IMPACTS...The cold wind chills as low as 17 below zero could result in hypothermia or frostbite if precautions are not taken.
Cold Weather Advisory
* WHAT...Very cold wind chills as low as 15 to 20 below expected. * WHERE...Portions of central New York and northeast Pennsylvania. * WHEN...Until 9 AM EST Sunday. * IMPACTS...The dangerously cold wind chills as low as 15 to 20 below zero could cause frostbite on exposed skin in as little as 30 minutes. Very cold temperatures can lead to hypothermia with prolonged exposure.
Cold Weather Advisory
* WHAT...Very cold wind chills 15 to 20 degrees below zero expected. * WHERE...Cameron, Elk, McKean, Northern Clinton, Northern Lycoming, Potter, Sullivan, Tioga, and Warren Counties. * WHEN...Until 11 AM EST Saturday. * IMPACTS...The cold wind chills as low as 20 below zero could result in hypothermia or frostbite if precautions are not taken. * ADDITIONAL DETAILS...Dangerously cold wind chills are possible again Saturday night into Sunday morning. Additional Cold Weather Advisories may be needed.
Cold Weather Advisory
* WHAT...Bitterly cold wind chills as low as 24 below zero expected. * WHERE...The western Southern Tier. * WHEN...Until 11 AM EST this morning. * IMPACTS...Bitterly cold wind chills as low as 24 below zero will cause frostbite on exposed skin in as little as 30 minutes. Frostbite and hypothermia will occur if unprotected skin is exposed to these temperatures.
Cold Weather Advisory
* WHAT...Bitterly cold wind chills as low as 24 below zero expected. * WHERE...Erie, Niagara, Orleans, Monroe, Wayne, Northern Cayuga, Oswego, Genesee, Wyoming, Livingston, Ontario, Chautauqua, Cattaraugus, and Allegany Counties. * WHEN...From 7 PM this evening to 10 AM EST Friday. * IMPACTS...Bitterly cold wind chills as low as 24 below zero will cause frostbite on exposed skin in as little as 30 minutes. Frostbite and hypothermia will occur if unprotected skin is exposed to these temperatures.
Cold Weather Advisory
* WHAT...Very cold wind chills 15 to 24 degrees below zero expected. * WHERE...Cameron, Elk, McKean, Northern Clinton, Northern Lycoming, Potter, Sullivan, Tioga, and Warren Counties. * WHEN...From 7 PM this evening to 10 AM EST Friday. * IMPACTS...The dangerously cold wind chills as low as 24 below zero could cause frostbite on exposed skin in as little as 30 minutes. * ADDITIONAL DETAILS...Wind chills may drop to dangerous levels again Friday Night and Saturday Night. Additional Cold Weather Advisories may be needed.
Cold Weather Advisory
* WHAT...For the first Cold Weather Advisory, very cold wind chills as low as 17 below. For the second Cold Weather Advisory, very cold wind chills as low as 25 below expected. * WHERE...Steuben and Sullivan Counties. * WHEN...For the first Cold Weather Advisory, until 9 AM EST this morning. For the second Cold Weather Advisory, from 7 PM this evening to 10 AM EST Friday. * IMPACTS...The cold wind chills as low as 25 below zero could result in hypothermia or frostbite if precautions are not taken.
Cold Weather Advisory
* WHAT...For the first Cold Weather Advisory, very cold wind chills as low as 15 below. For the second Cold Weather Advisory, very cold wind chills as low as 25 below expected. * WHERE...A portion of central New York. * WHEN...From 7 PM this evening to 10 AM EST Friday. * IMPACTS...The dangerously cold wind chills as low as 25 below zero could cause frostbite on exposed skin in as little as 30 minutes.
Cold Weather Advisory
* WHAT...Bitterly cold wind chills as low as 24 below zero expected. * WHERE...All of Western New York. Coldest wind chill values expected inland from the eastern Great Lakes. * WHEN...From 7 PM this evening to 10 AM EST Friday. * IMPACTS...Bitterly cold wind chills as low as 24 below zero will cause frostbite on exposed skin in as little as 30 minutes. Frostbite and hypothermia will occur if unprotected skin is exposed to these temperatures.
Cold Weather Advisory
* WHAT...Very cold wind chills 15 to 24 below zero expected. * WHERE...Cameron, Elk, McKean, Northern Clinton, Northern Lycoming, Potter, Sullivan, Tioga, and Warren Counties. * WHEN...For the first Cold Weather Advisory, until 10 AM EST this morning. For the second Cold Weather Advisory, from 7 PM this evening to 10 AM EST Friday. * IMPACTS...The dangerously cold wind chills could result in hypothermia or frostbite if precautions are not taken.
Cold Weather Advisory
* WHAT...Very cold wind chills as low as 15 below expected. * WHERE...Steuben and Sullivan Counties. * WHEN...From 11 PM this evening to 9 AM EST Thursday. * IMPACTS...The cold wind chills as low as 15 below zero could result in hypothermia or frostbite if precautions are not taken.
Cold Weather Advisory
* WHAT...Very cold wind chills 15 to 20 below zero expected. * WHERE...Cameron, Elk, McKean, Northern Clinton, Northern Lycoming, Potter, Sullivan, Tioga, and Warren Counties. * WHEN...From 1 AM to 10 AM EST Thursday. * IMPACTS...The cold wind chills as low as 20 below zero could result in hypothermia or frostbite if precautions are not taken.
Cold Weather Advisory
* WHAT...Very cold wind chills 15 to 20 below zero expected. * WHERE...Cameron, Elk, McKean, Northern Clinton, Northern Lycoming, Potter, Sullivan, Tioga, and Warren Counties. * WHEN...For the first Cold Weather Advisory, until 10 AM EST this morning. For the second Cold Weather Advisory, from 1 AM to 10 AM EST Thursday. * IMPACTS...The cold wind chills as low as 20 below zero could result in hypothermia or frostbite if precautions are not taken.
Winter Storm Warning
* WHAT...Heavy snow expected. Total snow accumulations between 12 and 18 inches, with localized amounts up to 22 inches. Northwest winds gusting as high as 35 mph Monday afternoon will cause areas of blowing and drifting snow. * WHERE...Portions of central New York and northeast Pennsylvania. * WHEN...Until 7 PM EST Monday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Monday morning and evening commutes. * ADDITIONAL DETAILS...At this time, the heaviest snowfall is forecast to fall across the northern tier of Northeast PA, Catskills and Susquehanna region of NY. However, minor adjustments to storm total snowfall are still possible. Snowfall will likely be very heavy at times this afternoon and evening with hourly rates potentially exceeding 2 inches per hour. The snow tapers down, becoming light to moderate after midnight and into Monday morning. Occasional light snow and blowing snow then continue into Monday afternoon. Temperatures will be very cold throughout this storm, hovering in the upper single digits to teens the entire time, with colder wind chills.
Winter Storm Warning
...MAJOR WINTER STORM WILL IMPACT CENTRAL PENNSYLVANIA THROUGH MONDAY MORNING... .A large area of snowfall is expected to continue across the Mid-Atlantic through Monday morning with significant snowfall expected across all of central Pennsylvania. Snowfall rates exceeding one inch per hour are expected with rates potentially exceeding two inches per hour in the heaviest snow this morning and afternoon. Ice and sleet is possible south of the Pennsylvania Turnpike this afternoon and evening. In addition to the significant snow accumulations, very cold temperatures are expected through the end of the week with periods of sub-zero wind chills likely at times. * WHAT...Heavy snow expected. Total snow accumulations between 12 and 18 inches with localized accumulations up to 20 inches. * WHERE...A portion of central Pennsylvania. * WHEN...Until 1 PM EST Monday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Monday morning commute. * ADDITIONAL DETAILS...Snow is expected to be heavy at times today with accumulation rates of one to two inches per hour at times. Frigid temperatures and wind chills are expected during and after the winter storm. Some blowing and drifting snow is possible.
Winter Storm Warning
* WHAT...Heavy snow expected. Total snow accumulations 12 to 18 inches. The highest amounts are expected across the higher terrain of the interior Southern Tier and Finger Lakes region. * WHERE...Wyoming, Livingston, Ontario, Chautauqua, Cattaraugus, Allegany, and Southern Erie Counties. * WHEN...Until 7 PM EST Monday. * IMPACTS...Travel will be very difficult. The hazardous conditions will impact the Monday morning and evening commutes. * ADDITIONAL DETAILS...The bulk of the heavy snow is expected late this morning through this evening. Moderate snow will continue across the higher terrain east of Lake Erie through Monday.
Winter Storm Warning
* WHAT...Heavy snow expected. Total snow accumulations between 12 and 18 inches, with localized amounts up to 22 inches. Northwest winds gusting as high as 35 mph Monday afternoon will cause areas of blowing and drifting snow. * WHERE...Portions of central New York and northeast Pennsylvania. * WHEN...From 1 AM Sunday to 7 PM EST Monday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Monday morning and evening commutes. * ADDITIONAL DETAILS...Snow will overspread Northeast PA and the New York Southern Tier between 4 AM and 7 AM Sunday morning, moving north to the I-90 corridor by the mid-morning hours on Sunday. At this time, the heaviest snowfall is forecast to fall across the northern tier of Northeast PA, Catskills and Susquehanna region of NY. However, minor adjustments to storm total snowfall are still possible. Snowfall will likely be very heavy at times Sunday afternoon into Sunday evening with hourly rates exceeding 2 to 3 inches per hour. The snow tapers down, becoming light to moderate after midnight Sunday night into Monday morning. Occasional light snow and blowing snow then continue into Monday afternoon. Temperatures will be very cold throughout this storm, hovering in the upper single digits to teens the entire time, with colder wind chills.
Winter Storm Warning
* WHAT...Heavy snow expected. Total snow accumulations between 10 and 18 inches. * WHERE...A portion of central Pennsylvania. * WHEN...From 10 PM this evening to 1 PM EST Monday. * IMPACTS...Travel will be very difficult to impossible. Widespread and prolonged travel disruptions are expected. * ADDITIONAL DETAILS...Snow will overspread the area Saturday night, becoming heavy at times through Sunday with accumulation rates of one to two inches per hour at times. Frigid temperatures and wind chills are expected before, during, and after the winter storm. Some blowing and drifting snow is possible.
Winter Storm Warning
* WHAT...Heavy snow expected. Total snow accumulations 8 to 14 inches. * WHERE...Wyoming, Livingston, Ontario, Chautauqua, Cattaraugus, Allegany, and Southern Erie Counties. * WHEN...From 1 AM Sunday to 7 PM EST Monday. * IMPACTS...Travel will be very difficult. The hazardous conditions will impact the Monday morning and evening commutes. * ADDITIONAL DETAILS...The bulk of the heavy snow is expected late Sunday morning through Sunday evening. Heavy snow will continue across the higher terrain east of Lake Erie through Monday.
Winter Storm Warning
* WHAT...Heavy snow expected. Total snow accumulations of 8 to 12 inches in the Wyoming Valley with snowfall amounts of 12 to 18 inches across the northern Tier of PA and central New York. Localized amounts up to two feet possible in the Southern Tier of NY and northern Tier of PA eastward toward the Catskills. Snow may mix with or change to sleet for a time in the Wyoming Valley. * WHERE...Portions of central New York and northeast Pennsylvania. * WHEN...From 1 AM Sunday to 7 PM EST Monday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions can impact travel on Sunday along with the Monday morning and evening commutes. * ADDITIONAL DETAILS...Snow will overspread Northeast PA and the New York Southern Tier around daybreak Sunday morning, moving north to the I-90 corridor by the mid-morning hours on Sunday. At this time, the heaviest snowfall is forecast to be from south-central NY and areas along the NY/PA line. However, further adjustments to the storm track are possible. Snowfall could be very heavy at times Sunday afternoon into Sunday night with hourly rates exceeding 2 inches per hour.
Cold Weather Advisory
* WHAT...Very cold wind chills as low as 20 below expected. * WHERE...A portion of north central Pennsylvania. * WHEN...From 1 PM Friday to 10 AM EST Saturday. * IMPACTS...The dangerously cold wind chills as low as 20 below zero could cause frostbite on exposed skin in as little as 30 minutes.
Winter Storm Watch
* WHAT...Widespread heavy snow with significant accumulations possible. * WHERE...Portions of central New York and northeast Pennsylvania. * WHEN...From late Saturday night through Monday evening. * IMPACTS...Heavy snow could make travel extremely difficult Sunday through Monday. * ADDITIONAL DETAILS...At this time, the heaviest snowfall is forecast to be from south-central NY and areas southward into Northeast PA and Catskills. However, further adjustments to the storm track are likely in the coming days. Snowfall could be very heavy at times Sunday through Sunday night with hourly rates exceeding 1 inch per hour.
Cold Weather Advisory
* WHAT...Very cold wind chills as low as 25 below expected. * WHERE...Portions of central New York and northeast Pennsylvania. * WHEN...From 7 PM Friday to 10 AM EST Saturday. * IMPACTS...The dangerously cold wind chills as low as 25 below zero could cause frostbite on exposed skin in as little as 30 minutes.
Cold Weather Advisory
* WHAT...Bitterly cold wind chills as low as 15 below zero expected. * WHERE...Niagara, Orleans, Monroe, Wayne, Northern Cayuga, Oswego, Northern Erie, Genesee, Livingston, and Ontario Counties. * WHEN...From 7 PM Friday to 10 AM EST Saturday. * IMPACTS...Bitterly cold wind chills as low as 15 below zero will cause frostbite on exposed skin in as little as 30 minutes. Frostbite and hypothermia will occur if unprotected skin is exposed to these temperatures.
Cold Weather Advisory
* WHAT...Bitterly cold wind chills as low as 20 below zero expected. * WHERE...Southern Erie and Wyoming counties and the western Southern Tier. * WHEN...From 1 PM Friday to 10 AM EST Saturday. * IMPACTS...Bitterly cold wind chills as low as 20 below zero will cause frostbite on exposed skin in as little as 30 minutes. Frostbite and hypothermia will occur if unprotected skin is exposed to these temperatures.
Winter Storm Watch
* WHAT...Widespread heavy snow possible late Saturday night through Monday evening. Significant accumulations possible. * WHERE...The Genesee Valley and northern Finger Lakes. * WHEN...From late Saturday night through Monday evening. * IMPACTS...Travel may be very difficult with snow covered roads and poor visibility.
Winter Storm Watch
* WHAT...Heavy lake effect snow and blowing snow today through Friday. Additional snow accumulations 8 to 14 inches in the most persistent lake snows. Winds gusting as high as 40 mph will produce significant blowing and drifting snow. Widespread heavy snow possible late Saturday night through Monday evening. Significant accumulations possible. * WHERE...Wyoming and Southern Erie Counties. * WHEN...For the Lake Effect Snow Warning, until 1 PM EST Friday. For the Winter Storm Watch, from late Saturday night through Monday evening. * IMPACTS...Travel will be very difficult with snow covered roads and very poor visibility at times. The hazardous conditions will impact the Thursday morning and evening commutes.
Lake Effect Snow Warning
* WHAT...Heavy lake effect snow and blowing snow today through Friday. Additional snow accumulations 8 to 14 inches in the most persistent lake snows. Winds gusting as high as 40 mph will produce significant blowing and drifting snow. Widespread heavy snow possible late Saturday night through Monday evening. Significant accumulations possible. * WHERE...Wyoming and Southern Erie Counties. * WHEN...For the Lake Effect Snow Warning, until 1 PM EST Friday. For the Winter Storm Watch, from late Saturday night through Monday evening. * IMPACTS...Travel will be very difficult with snow covered roads and very poor visibility at times. The hazardous conditions will impact the Thursday morning and evening commutes.
Winter Storm Watch
* WHAT...Widespread heavy snow possible late Saturday night through Monday evening. Significant accumulations possible. * WHERE...Niagara, Orleans, and Allegany Counties. * WHEN...From late Saturday night through Monday evening. * IMPACTS...Plan on snow covered and slippery road conditions with reduced visibility.
Winter Storm Watch
* WHAT...Heavy snow possible. Total snow accumulations 6 inches or more possible. * WHERE...A portion of central Pennsylvania. * WHEN...From Saturday evening through Monday afternoon. * IMPACTS...Heavy snow could result in significant widespread travel disruptions.
Winter Weather Advisory
* WHAT...For the Winter Weather Advisory, snow. Additional snow accumulations up to one inch. Winds gusting 30 to 40 mph with isolated gusts over 45 possible. For the Winter Storm Watch, heavy snow with significant accumulations possible. * WHERE...Blair, Somerset, Southern Centre, and Southern Clinton Counties. * WHEN...For the Winter Weather Advisory, until 10 AM EST this morning. For the Winter Storm Watch, from Saturday evening through Monday afternoon. * IMPACTS...For the Winter Weather Advisory, slippery roads possible for the Thursday morning commute. For the Winter Storm Watch, roads and especially bridges and overpasses will likely become slick and hazardous. Travel could be difficult late Saturday night through Monday morning. * ADDITIONAL DETAILS...A few stronger snow showers are possible this morning with rapid reductions in visibility and a quick accumulation on roadways.
Winter Storm Watch
* WHAT...Heavy snow with significant accumulations possible. Snow may mix with or transition to sleet in southern PA on Sunday and Sunday night. * WHERE...A portion of central Pennsylvania. * WHEN...From Saturday evening through Monday afternoon. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Travel could be difficult late Saturday night through Monday morning.+
Winter Storm Watch
* WHAT...For the Winter Weather Advisory, snow. Additional snow accumulations up to one inch. Winds gusting 30 to 40 mph with isolated gusts over 45 possible. For the Winter Storm Watch, heavy snow with significant accumulations possible. * WHERE...Blair, Somerset, Southern Centre, and Southern Clinton Counties. * WHEN...For the Winter Weather Advisory, until 10 AM EST this morning. For the Winter Storm Watch, from Saturday evening through Monday afternoon. * IMPACTS...For the Winter Weather Advisory, slippery roads possible for the Thursday morning commute. For the Winter Storm Watch, roads and especially bridges and overpasses will likely become slick and hazardous. Travel could be difficult late Saturday night through Monday morning. * ADDITIONAL DETAILS...A few stronger snow showers are possible this morning with rapid reductions in visibility and a quick accumulation on roadways.
Winter Storm Watch
* WHAT...Widespread heavy snow with significant accumulations possible. * WHERE...Portions of central New York and northeast Pennsylvania. * WHEN...From late Saturday night through Monday evening. * IMPACTS...Heavy snow could make travel extremely difficult Sunday through Monday. * ADDITIONAL DETAILS...At this time, the heaviest snowfall is forecast to be from the Twin Tiers southward, however, further adjustments to the storm track is likely in the coming days. Snowfall could be very heavy at times Sunday through Sunday night with hourly rates exceeding 1 inch per hour.
Winter Storm Watch
* WHAT...Snow and blowing snow. Additional snow accumulations 1 to 3 inches. Winds gusting as high as 35 mph will produce blowing and drifting snow in open areas. Widespread heavy snow possible late Saturday night through Monday evening. Significant accumulations possible. * WHERE...Niagara, Orleans, and Allegany Counties. * WHEN...For the Winter Weather Advisory, until 10 AM EST this morning. For the Winter Storm Watch, from late Saturday night through Monday evening. * IMPACTS...Plan on snow covered and slippery road conditions with reduced visibility. The hazardous conditions will impact the Thursday morning commute.
Winter Weather Advisory
* WHAT...Snow and blowing snow. Additional snow accumulations 1 to 3 inches. Winds gusting as high as 35 mph will produce blowing and drifting snow in open areas. Widespread heavy snow possible late Saturday night through Monday evening. Significant accumulations possible. * WHERE...Niagara, Orleans, and Allegany Counties. * WHEN...For the Winter Weather Advisory, until 10 AM EST this morning. For the Winter Storm Watch, from late Saturday night through Monday evening. * IMPACTS...Plan on snow covered and slippery road conditions with reduced visibility. The hazardous conditions will impact the Thursday morning commute.
Winter Storm Watch
* WHAT...Heavy snow possible. Total snow accumulations between 3 and 6 inches with locally higher amounts possible. * WHERE...Cameron, Clearfield, Elk, McKean, Potter, and Warren County. * WHEN...From Wednesday afternoon through Thursday morning. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Wednesday evening and Thursday morning commutes. * ADDITIONAL DETAILS...A several-hour period of 1 inch per hour snowfall rates is possible Wednesday evening, which could result in rapidly-deteriorating road conditions across the Watch area.
Winter Storm Warning
* WHAT...Heavy lake effect snow. Heavy snow. Additional snow accumulations 6 to 11 inches with localized total snowfall amounts of 2 to 3 feet across southwest and central Erie County in the most persistent bands. Winds gusting as high as 40 mph will produce significant blowing and drifting with near whiteouts at times. Snowfall rates of 2 to 3 inches per hour in the most intense band. * WHERE...Wyoming, Chautauqua, Cattaraugus, and Southern Erie Counties. Greatest snow accumulation across southern Erie County, western Wyoming County, extreme northern Chautauqua County, and extreme northwest Cattaraugus County. * WHEN...Until 3 PM EST Wednesday. * IMPACTS...Whiteout conditions are expected and will make travel treacherous and potentially life-threatening. Travel will be very difficult in deep snow covered roads. Areas of blowing snow will significantly reduce visibility. The hazardous conditions will impact the morning and evening commutes. Gusty winds will down tree branches and cause isolated power outages.