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Update on current storm
by BOX Operations - NOAA Service Account 02 Mar '19

02 Mar '19

Hi all, We have replaced the Winter Storm Warnings with Winter Weather Advisories for southeast MA. Snow began a few hours later than expected but the ending time is expected to be the same. As a result, we are expecting max amounts to top out around 6 inches, rather than 6 to 8 inches. The snow will still be heavy and wet this morning and the risk remains for scattered power outages in Rhode Island and southeast Massachusetts. If you have any questions or would like more information, don't hesitate to contact us via this email address, on NWSChat <https://nwschat.weather.gov/>, or at the following: National Weather Service Boston/Norton, MA 46 Commerce Way Norton, MA 02766 508.622.3280 Website <http://www.weather.gov/boston> | Facebook <http://www.facebook.com/NWSBoston> | Twitter <http://www.twitter.com/NWSBoston>

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[2019.03.02 AM] Briefing Package on Two Winter Storms this Weekend
by BOX Operations - NOAA Service Account 02 Mar '19

02 Mar '19

Good morning. Attached is our briefing package on the current wet snow event for Today. We have issued a Winter Storm Watch for the Sunday evening to Monday morning storm; we have also included graphics for our snowfall forecast and "Onset" graphic for that storm. Lastly, please stay tuned for additional emails and another possible conference call sometime later today. *Today:* What: - Wet Snow with accumulations of 2 to 6 inches across most of the region with 4 to 8 inches across Southeast MA. Lower amounts forecast on Cape Cod where some rain and sleet may be mixed in at times. Where: - All of southern New England with the heaviest snow expected across southeast MA into Rhode Island. When: - Snow develops from south to north this morning. Heaviest snow expected from 7 AM through 1 PM with 1 inch per hour snowfall rates across RI and SE MA. Lighter snowfall continues this afternoon. *Potential Impacts/Uncertainty: * *- *High confidence in a plowable snowfall for much of the region. - Main uncertainty is if higher snowfall amounts are realized, increasing the risk for isolated to scattered power outages. Greatest risk for this is across southeast MA and RI. - Lower confidence in snowfall amounts across the Cape and Islands with snow potentially mixing with rain and sleet. *Sunday Evening Into Mid Morning Monday:* *Changes:* - A Winter Storm Watch has been issued for all except coastal areas. *What:* - Accumulation of 6 to 12 inches possible north and west of the Boston-Providence corridor. Lesser amounts to the south and east. - Impacts to the Monday morning commute especially across the interior. - Risk for isolated to scattered power outages from northern CT into northwest RI and interior MA if higher snow amounts are realized. *Where:* - Greatest risk for significant snow will be northwest of the Boston to Providence corridor, but significant snow is still possible in the Boston to Providence corridor depending on the exact track. *When:* - Snow develops between 5 and 8 pm Sunday evening and will be heavy at times during the overnight hours. - Snow may change to rain across portions of coastal and southeastern MA and RI depending on the exact track. - Precipitation tapers off by mid morning Monday *Uncertainty:* - Forecast models have moved closer to each other and favor a storm passing off the coast. There remains some uncertainty on placement of the rain-snow line as the forecast tracks shift, but less uncertainty than in previous forecasts. - Forecast confidence should further increase this afternoon and tonight. Please let us know if you have any questions or concerns. We have briefing package update by 6 pm this evening. Thank You Attachments: Winter Storm Briefing for Today Onset Chart of Sunday night storm Expected Snowfall of Sunday night storm If you have any questions or would like more information, don't hesitate to contact us via this email address, on NWSChat <https://nwschat.weather.gov/>, or at the following: National Weather Service Boston/Norton, MA 46 Commerce Way Norton, MA 02766 508.622.3280 Website <http://www.weather.gov/boston> | Facebook <http://www.facebook.com/NWSBoston> | Twitter <http://www.twitter.com/NWSBoston>

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[2019.03.01 PM] Briefing Package On Two Upcoming Winter Storms
by BOX Operations - NOAA Service Account 01 Mar '19

01 Mar '19

Good afternoon everyone Attached is our briefing package on the upcoming wet snow event overnight into Saturday. We have also included our snowfall forecast for the Sunday evening into mid morning Monday storm in second graphic. Lastly, please stay tuned for additional emails and another possible conference call sometime on Saturday. *Overnight Into Saturday:* What: - Wet Snow with accumulations of 2 to 6 inches across most of the region with 4 to 8 inches across Southeast MA. Lower amounts forecast on Cape Cod where some rain and sleet may be mixed in at times. Where: - All of southern New England with the heaviest snow expected across southeast MA into Rhode Island. When: - Snow develops from south to north after midnight. Heaviest snow expected from 4 am Saturday through noon with 1 inch per hour snowfall rates across RI and SE MA. Lighter snowfall continues Saturday afternoon. *Potential Impacts/Uncertainty: * *- *High confidence in a plowable snowfall for much of the region. - Main uncertainty is if higher snowfall amounts are realized, increasing the risk for isolated to scattered power outages. Greatest risk for this is across southeast MA and RI. - Lower confidence in snowfall amounts across the Cape and Islands with snow potentially mixing with rain and sleet. *Sunday Evening Into Mid Morning Monday:* *What:* - Significant snow accumulation possible. - Impacts to the Monday morning commute especially across the interior. - Risk for isolated to scattered power outages from northern CT into northwest RI and northeast MA if higher snow amounts are realized. *Where:* - Greatest risk for significant snow will be northwest of the Boston to Providence corridor, but significant snow is still possible in the Boston to Providence corridor depending on the exact track. *When:* - Snow develop between 4 and 8 pm Sunday evening and will be heavy at times during the overnight hours. - Snow may change to rain across portions of eastern MA and RI depending on the exact track. - Precipitation tapers off by mid morning Monday *Uncertainty:* - There is still considerable uncertainty with the storm track which will determine where rain-snow line sets up and where axis of heaviest snow occurs - It is still too early to give specific snowfall amounts - We will know more each day but probably will not have higher confidence in snowfall amounts until Saturday Please let us know if you have any questions or concerns. We have briefing package update by 6 am Saturday Morning. Thank You Meteorologist: Hayden Frank If you have any questions or would like more information, don't hesitate to contact us via this email address, on NWSChat <https://nwschat.weather.gov/>, or at the following: National Weather Service Boston/Norton, MA 46 Commerce Way Norton, MA 02766 508.622.3280 Website <http://www.weather.gov/boston> | Facebook <http://www.facebook.com/NWSBoston> | Twitter <http://www.twitter.com/NWSBoston>

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[2019.03.01 AM] Potential for Two Winter Storms Tonight thru Monday
by BOX Operations - NOAA Service Account 01 Mar '19

01 Mar '19

Good Morning, An active pattern is still anticipated this weekend and early next week with the potential for 2 winter storms impacting Southern New England. The first storm will start late tonight and last into Saturday. This will bring the potential for several inches snow accumulation. The second and stronger storm is expected late Sunday into Monday, but there remains considerable uncertainty with the storm track, which will in turn affect the types of precipitation. Details below. *Tonight into Saturday...* *What has changed:* - A Winter Weather Advisory has been issued for parts of Southeast Massachusetts. This includes Suffolk, Norfolk, Northern Bristol, and Interior/Eastern Plymouth Counties. *What/Where/When:* - Potential snowfall of 2 to 6 inches. - Heaviest snowfall expected across interior RI/Southeast MA - Snow develops near the south coast around 9 PM tonight and reaches northern MA toward daybreak Saturday - A brief period of heavy snow with 1-2 inch/hr snowfall rates is possible Sat morning across eastern New England - Hazardous travel conditions with snow covered roads and poor visibility late tonight and Saturday morning - Snowfall will be wet and heavy so risk for power outages will increase if amounts reach 6 inches - Some mixing with rain or sleet possible coastal plain and Cape/Islands Saturday - Snow gradually tapers off west to east during Saturday midday and afternoon *Uncertainty:* - Axis of heaviest snowfall can still change and it is possible max snowfall amounts could exceed 6 inches in some locations. - If storm track trends further north, heavier snowfall will shift further in the interior with more rain near the coast. A further south track would result in more of a glancing blow. - Slight cooling in the atmosphere could result in more significant snow accumulation for the Cape/Islands. *Late Sunday into Monday...* *What has changed:* - Forecast information has trended the forecast storm paths somewhat closer together, but still with lingering and significant differences. *What:* - Significant snow accumulation - Impacts to the Monday morning commute *Where:* - Greatest risk for significant snow will be across the interior, north and west of the Boston to Providence corridor, but significant snow can't be ruled out yet for Boston to Providence *When:* - Snow develops Sunday evening from west to east, possibly heavy at times after midnight - Snow may mix with sleet and change to rain in the coastal plain later Sunday night - Precipitation gradually tapers off during Monday *Uncertainty:* - There is still considerable uncertainty with the storm track which will determine where rain-snow line sets up and where axis of heaviest snow occurs - It is still too early to give specific snowfall amounts - We will know more each day but probably will not have higher confidence in snowfall amounts until Saturday If you have any questions or would like more information, don't hesitate to contact us via this email address, on NWSChat <https://nwschat.weather.gov/>, or at the following: National Weather Service Boston/Norton, MA 46 Commerce Way Norton, MA 02766 508.622.3280 Website <http://www.weather.gov/boston> | Facebook <http://www.facebook.com/NWSBoston> | Twitter <http://www.twitter.com/NWSBoston>

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[2019.02.28 PM] Potential for 2 winter storms Fri night/Sat and Late Sun-Mon
by BOX Operations - NOAA Service Account 28 Feb '19

28 Feb '19

Good Afternoon, We have quite an active pattern this weekend into early next week with the potential for 2 winter storms impacting southern New England. The first storm will be late Friday night into Saturday with the potential for several inches snow accumulation. The second and stronger storm is expected late Sunday into Monday, but there is considerable uncertainty with the storm track. Details below. *Friday night into Saturday...* *What/Where/When:* - Potential snowfall of 3 to 6 inches. - Heaviest snowfall expected across interior RI/SE MA - Snow develops near the south coast after midnight Friday night reaching northern MA toward daybreak Saturday - A brief period of heavy snow with 1-2 inch/hr snowfall rates possible Sat morning across eastern New Eng - Hazardous travel conditions with snow covered roads and poor visibility late Friday night and Saturday morning - Snowfall will be wet and heavy so risk for power outages will increase if amounts reach 6 inches - Some mixing with rain or sleet possible near the immediate south coast and Cape/Islands Saturday - Snow gradually tapers off during Saturday afternoon *Uncertainty:* - Axis of heaviest snowfall can still change and it is possible max snowfall amounts could exceed 6 inches in some locations. - If storm track trends further north, heavier snowfall will shift further in the interior with more rain near the coast. A further south track would result in more of a glancing blow. - Slight cooling in the atmosphere could result in more significant snow accumulation for the Cape/Islands. *Late Sunday into Monday...* *What:* - Significant snow accumulation - Impacts to the Monday morning commute *Where:* - Greatest risk for significant snow will be across the interior, north and west of the Boston to Providence corridor, but significant snow can't be ruled out yet for Boston to Providence *When:* - Snow develops late Sunday and Sunday evening from west to east, possibly heavy at times after midnight - Snow may change to rain in the coastal plain later Sunday night - Precipitation gradually tapers off during Monday *Uncertainty:* - There is still considerable uncertainty with the storm track which will determine where rain-snow line sets up and where axis of heaviest snow occurs - It is still too early to give specific snowfall amounts - We will know more each day but probably will not have higher confidence in snowfall amounts until Saturday If you have any questions or would like more information, don't hesitate to contact us via this email address, on NWSChat <https://nwschat.weather.gov/>, or at the following: National Weather Service Boston/Norton, MA 46 Commerce Way Norton, MA 02766 508.622.3280 Website <http://www.weather.gov/boston> | Facebook <http://www.facebook.com/NWSBoston> | Twitter <http://www.twitter.com/NWSBoston>

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[2019.02.27 PM] Plowable Snow Tonight Into Early Thursday Morning
by BOX Operations - NOAA Service Account 27 Feb '19

27 Feb '19

Good afternoon everyone Not too many changes from the previous thinking. We will attach images of our Winter Weather Headlines along with our latest snowfall forecast and included a brief outline below. - Areas of light snow develop through 5 or 6 pm in western MA, resulting in slippery travel for part of the evening commute especially near the Berkshires. - Light snow overspreads the rest of the region between 5 and 8 pm from west to east. - Steadiest snow occurs between 10 pm and 4 am, but snowfall rates will generally be less than 1 inch per hour. - Snow ends between 4 am and 7 am Thursday in most locations, but some light snow may linger through 9 or 10 am along the eastern MA coast. - Snow Accumulations of 2-4” for many, but it is possible that areas from near Hartford CT to coastal RI only receive an inch or two. A heavier band of 3-6” of snow is possible roughly 20 miles north or south of the MA Turnpike. This includes the Berks as well as the Boston to Worcester metro areas. - Although the snow will be over in most locales by the Thursday am rush hour, cold temperatures will result in some roads being snow covered/slippery for the morning commute. - This will be a dry snow event even along the coast. Please let us know if you have any questions or concerns. Thank You Meteorologist: Hayden Frank If you have any questions or would like more information, don't hesitate to contact us via this email address, on NWSChat <https://nwschat.weather.gov/>, or at the following: National Weather Service Boston/Norton, MA 46 Commerce Way Norton, MA 02766 508.622.3280 Website <http://www.weather.gov/boston> | Facebook <http://www.facebook.com/NWSBoston> | Twitter <http://www.twitter.com/NWSBoston>

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Late Morning Snowfall Update With Arrival Times
by BOX Operations - NOAA Service Account 27 Feb '19

27 Feb '19

Good morning everyone The overall forecast remains on track, but we wanted to just give a brief update based on some of the latest data we are currently reviewing. The first image we are attaching indicates a snowfall forecast from one of our more reliable computer models. While it is not meant to be taken verbatim our thinking is that it has the correct idea. A swath of 3 to 6 inches of snow appears reasonable within 20 miles north or south of the MA turnpike, including the Berkshires as well as the greater Worcester and Boston metro areas. Areas near the NH border and particularly from near Hartford, CT to the south coast of RI may end up more in the 1 to 4 inch range. In addition, we also have attached a loop indicating the approximate arrival and ending times of the snow. The general theme is that the steady light snow will arrive in most locations between 4 and 8 pm this evening. While snowfall rates should be light during this time, some roads may become coated with snow for the evening commute with the highest risk in western MA. The heaviest snow still looks to occur from 10 pm to 4 am, but snowfall rates will generally remain under 1 inch per hour. The snow wraps up in most areas in time for the Thursday morning rush hour, except along the eastern MA coast where it may linger a few hours longer. Nonetheless, untreated roads will be snow covered and slippery for the Thursday morning commute. We will have a full briefing package out later this afternoon. Just wanted to share our latest thinking along with a few images. Thank You Meteorologist: Hayden Frank If you have any questions or would like more information, don't hesitate to contact us via this email address, on NWSChat <https://nwschat.weather.gov/>, or at the following: National Weather Service Boston/Norton, MA 46 Commerce Way Norton, MA 02766 508.622.3280 Website <http://www.weather.gov/boston> | Facebook <http://www.facebook.com/NWSBoston> | Twitter <http://www.twitter.com/NWSBoston>

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[2019.02.27 AM] Plowable Snow Late This Afternoon into Early Thursday Morning
by BOX Operations - NOAA Service Account 27 Feb '19

27 Feb '19

Good morning, A plowable snow remains in the forecast beginning late this afternoon and continuing through the early morning hours on Thursday. Please see the attached images which highlight the details. *What has changed ...* - *WINTER WEATHER ADVISORY* expanded to include all of Massachusetts. *What / Where / When ...* - Light snow will spread across all of Southern New England. - Beginning late this afternoon into evening for the CT River Valley, 5 to 7 pm, spreading over the remainder of S New England, 7 to 9 pm. - Bulk of the snowfall occurring around 10 pm to 4 am Thursday with snowfall rates less than an inch per hour. - Snow tapering 4 am to 7 am Thursday, west to east. - Total snow accumulations around 2 to 4 inches with locally higher amounts. - Not ruling out amounts that could come close to warning-level criteria of 6-inches. - Greater confidence of higher amounts along and N of the MA-Pike. *Impacts ... * - *Hartford / Springfield / Worcester* *metro areas* ... will see snow develop into this evenings commute. - Any accumulations on roadways should be light, mainly a dusting ... bigger concern will be reduced visibility. - *Boston / Providence metro areas* ... will see snow lingering during the early morning commute on Thursday before ending. - Slick surfaces with any untreated roads in addition to reduced visibility. - With any snow ... and given temperatures will be around 20 degrees, upper teens for most areas throughout the event. - Snow will accumulate on all surfaces. - A light and fluffy snow, with snowfall rates less than an inch per hour, should make for easy and quick clean-up. - However treatments may have difficulty working given cold temperatures forecast overnight. - Expect reductions in visibility and hazardous travel conditions. Should you have any additional questions, comments and/or concerns, don't hesitate to reach out to us. Find your local forecast at the following: https://forecast.weather.gov/gridpoint.php?site=box&TypeDefault=graphical Respectfully, Benjamin Sipprell Meteorologist NWS Boston / Norton If you have any questions or would like more information, don't hesitate to contact us via this email address, on NWSChat <https://nwschat.weather.gov/>, or at the following: National Weather Service Boston/Norton, MA 46 Commerce Way Norton, MA 02766 508.622.3280 Website <http://www.weather.gov/boston> | Facebook <http://www.facebook.com/NWSBoston> | Twitter <http://www.twitter.com/NWSBoston>

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Plowable Snowfall Expected Wednesday Night Into Early Thursday Morning
by BOX Operations - NOAA Service Account 26 Feb '19

26 Feb '19

Good afternoon everyone A Winter Weather Advisory has been issued for western MA as well as areas along and south of the MA turnpike Wednesday evening into early Thursday morning. A briefing has been attached to this email along with a few graphics. These include late tonight into mid morning Wednesday Wind Chills, approximate start/stop times of the snow, current winter weather headlines, as well as expected snowfall amounts. *Wind Chills:* - A Wind Chill Advisory remains in effect for the East Slopes of the Berkshires and Northern Worcester County late tonight into mid morning Wednesday. - Wind Chills overnight into Wednesday morning will drop to between 10 and 15 below zero. *Accumulating Snow Wednesday Evening into early Thursday morning:* *What/Where:* - Total snow accumulations of 2 to 4 inches expected across most of southern New England. - A Winter Weather Advisory has been issued for western MA and areas along and south of the MA turnpike, where the greatest potential exists for reaching the higher amounts exists. *When:* *- *Light snow will overspread western MA/northern CT including the Hartford and Springfield Metro areas between 5 and 7 pm Wednesday evening. Some slippery spots possible for the latter half of the evening commute, but snowfall rates will be rather light. - Light snow overspreads eastern MA and RI between 7 and 10 pm. - Bulk of the accumulating snow occurs between 11 pm and 4 am Thursday morning, but snowfall rates should generally remain less than 1 inch per hour. - Snow should pretty much end between 4 and 7 am Thursday morning from west to east. Light snow may linger through late Wednesday morning across eastern MA. - Despite heaviest snow being over by the Thursday morning rush hour, temperatures in the upper teens and lower 20s may result in untreated roads remaining snow covered and slippery. *Uncertainty/When We Will Know More:* *- *A general 2 to 4 inches of snow is expected across the region. Confidence in the higher amounts is across western MA and areas along and south of the MA Turnpike, but given this is 24 to 36 hours out this axis may shift. - Snowfall amounts are still subject to change. A weaker system would result in many areas receiving only an inch or two of snow, but on the flip side of the coin a stronger system would result in the potential for 3 to 6 inch amounts. - Confidence will increase in the forecast by early Wednesday morning. Please let us know if you have any questions or concerns. Thank You Meteorologist: Hayden Frank If you have any questions or would like more information, don't hesitate to contact us via this email address, on NWSChat <https://nwschat.weather.gov/>, or at the following: National Weather Service Boston/Norton, MA 46 Commerce Way Norton, MA 02766 508.622.3280 Website <http://www.weather.gov/boston> | Facebook <http://www.facebook.com/NWSBoston> | Twitter <http://www.twitter.com/NWSBoston>

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[2019.02.26 AM NWS Briefing] Winds Diminish, Wind Chill Tonight, Snow Wed night
by BOX Operations - NOAA Service Account 26 Feb '19

26 Feb '19

Good morning, Winds will continue to impact Southern New England through the afternoon but not as extreme as yesterday. A Wind Chill Advisory has been issued for the East Slopes of the Berkshires and Northern Worcester County for late tonight and Wednesday morning. Another weather system will pass Southern New England Wednesday night and Thursday morning. This will bring a few inches of accumulating snow for late Wednesday into early Thursday. *WINDS:* - Gusts continue to reach 40-50 mph during the day. - Continued risk for downed trees/limbs, along with continued power outages. Winds may limit ability for utility companies to restore power. - The risk should be fully over by this evening. *Wind Chill:* - A Wind Chill Advisory is in effect for the East Slopes of the Berkshires and Northern Worcester County for tonight and Wednesday morning. This advisory area also includes Eastern Franklin County. - Wind Chills in this area tonight will reach 15 to 20 degrees below zero. *PLOWABLE SNOW LATE WED - THU:* *What:* - Light to moderate snowfall. - Snowfall rates generally below 1 inch/hour. - Total snowfall of 1-4 inches possible based on current forecast. - Some impacts to Wednesday evening and Thursday Morning commutes. *When:* - Snow overspreads from West-East between mid afternoon and evening Wednesday. - Snow continues Wednesday night. - Snow tapers off Thursday morning 5-7 AM CT and Western MA, 6-8 AM Central MA , 7-10 AM RI and Eastern MA. *Where:* - All of Southern New England - Highest totals in the East Slopes of the Berkshires. *Uncertainty/When We Will Know More:* - Snowfall amounts may change over the next 36 hours. - There is an equal risk for both higher, and lower snow totals. - We will continue to update over the next 36 hours. Three charts are included: the peak winds expected today, lowest wind chills tonight and Wednesday morning, and the current snowfall forecast for late Wednesday through Thursday. Please let us know if you have any questions or concerns - NWS Boston/Norton If you have any questions or would like more information, don't hesitate to contact us via this email address, on NWSChat <https://nwschat.weather.gov/>, or at the following: National Weather Service Boston/Norton, MA 46 Commerce Way Norton, MA 02766 508.622.3280 Website <http://www.weather.gov/boston> | Facebook <http://www.facebook.com/NWSBoston> | Twitter <http://www.twitter.com/NWSBoston>

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