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[2019.02.12 AM NWS Briefing] Significant Winter Weather Impact Today into Tonight
by BOX Operations - NOAA Service Account 12 Feb '19

12 Feb '19

Good morning, A significant winter weather impact will occur across most of Southern New England, especially taking place during today's afternoon into evening commute. Please see the attached slides detailing amounts and timing of anticipated threats, while details concerning impacts and uncertainty are provided below. *What has changed ...* - *WINTER STORM WARNINGS ...* - Issued for northern and northeast Massachusetts - In addition to Berkshire County, Massachusetts and Litchfield County, Connecticut. - *WINTER WEATHER ADVISORIES ... * - Expanded to include areas along and south of the Massachusetts Turnpike. - In addition to all but Litchfield County, Connecticut, all of Rhode Island, as well as Southeast Massachusetts. - Please see the attached graphic outlining headlines. *What / Where / When ...* - Onset snow transitioning to sleet before mixing with or changing over to freezing rain across the interior, before mixing with or changing over to rain along the coast. - Snow / sleet accumulations on average ranging around 3 to 6 inches over Southern New England. - Please see the attached storm total snowfall graphic for specifics. - Ice accretion of a trace up to two tenths across interior Southern New England especially around the Worcester / Hartford / Springfield region. - A low threat of tree and power line damage. - Please see the attached storm total ice accretion graphic for specifics. - Winter weather begins around noon for the Hartford / Spingfield metro, 1 pm for Worcester / Providence, and 2 pm for Boston - Please see the attached animated graphic highlighting precip-types for rough estimate of timing. - *Significant impact for today's afternoon into evening commute.* - Hazardous travel conditions with slick roadways. - Most intense snow expected during today's afternoon into evening commute. More than likely will accumulate even on treated roads. - Expect slowed commutes, long drives home, especially if more cars are on the road and if any accidents. - Reductions in visibility with any snow and / or sleet. - Lower visibility especially as around 1 inch per hour snowfall rates are anticipated before mixing with then changing over to sleet - Moderate to heavy snow mostly falling during today's afternoon into evening commute. - Less impact to the Wednesday AM commute as steadier precipitation concludes, some show shower activity lingering across N&W MA - However can't rule out some lingering icy roadways across interior MA and CT, especially if left untreated. *Uncertainty ... * - While specific snow amounts are still uncertain, hinging on exactly when snow will change to sleet, the bigger message is the anticipated *significant impact* to today's afternoon into evening commute. Please, do not hesitate. Should you have any questions, comments and/or concerns, we are here 24 / 7 to help you. If you are looking for an hour-by-hour forecast for your area, please visit the following website below ... 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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[2/11/19 Afternoon Briefing] Significant Impact Expected For The Tuesday Afternoon And Evening Commute
by BOX Operations - NOAA Service Account 11 Feb '19

11 Feb '19

Good afternoon everyone, Attached is a brief outline on the upcoming winter storm along with several images attached. While specific snow amounts are still uncertain and hinge on when exactly snow changes to sleet, confidence is very high that the Tuesday pm commute will be significantly impacted with very hazardous travel. *What has changed ...* - *Very High confidence in a significant impact to the Tuesday PM commute. 1-2 inch per hour snowfall rates are expected for at least a brief period of time, especially near and north of the MA Turnpike.* - The Winter Storm Watch has been upgraded to a Winter Storm Warning for Berkshire county in MA. *What / Where / When ...* - Snow develops between 10 am and noon across western MA/northern CT reaching eastern MA/RI between noon and 3 pm. - *Significant impact expected for the Tuesday afternoon and evening commute across all of southern New England:* - Hazardous travel with 1-2" per hour snowfall rates and poor visibility expected for at least a brief period of time during the Tuesday PM commute, especially near and north of the MA turnpike. - Snow changes to a period of heavy sleet from southwest to northeast between 4 and 10 pm Tuesday evening, but heavy snow may linger longer in northeast MA. - Sleet changes to rain across most of eastern MA and RI by or shortly after midnight. - Sleet changes to a period of freezing rain across much of interior MA and northern CT near or shortly after midnight. Ice accretion of one to two tenths of an inch expected, but the threat of tree damage and power outages appears rather low. - The steady precipitation will be coming to an end in most locations before the Wednesday morning rush hour. Untreated roads across the interior MA/CT may still be snow/ice covered, but the impact will likely be significantly less then the Tuesday PM commute. - Temperatures will rise above freezing in all locations by late Wednesday morning. No problems expected for the Wednesday pm commute. *Uncertainty ...* - Specific snowfall amounts remain uncertain. 4 to 7 inches are forecast near and north of the MA Turnpike with 2 to 4 inches south of the Pike. These amounts may increase or decrease by a few inches, dependent on the specific time snow changes to sleet. - Regardless of specific snow amounts, High confidence in a SIGNIFICANT IMPACT for the Tuesday PM commute with at least a brief period of 1 to 2 inch per hour snowfall rates in most locations that will stick to roadways immediately. 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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High Confidence In A Significant Impact For the Tuesday PM Commute
by BOX Operations - NOAA Service Account 11 Feb '19

11 Feb '19

Hi everyone We just wanted to send out a quick email that confidence is very high in a significant/very difficult Tuesday pm commute. We have attached an hourly loop of the approximate start time of the snow and when it is expected to change to sleet. While uncertainty still exists on how quickly snow changes to sleet, confidence is high in a brief window of 1-2 inch per hour snowfall rates during the Tuesday pm commute. We will send out the full briefing package later today, but just wanted to focus on the high impact expected for Tuesday afternoon commuters. 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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[2019.02.11 AM UPDATE] Winter Weather Advisory Expanded across Southeast New England
by BOX Operations - NOAA Service Account 11 Feb '19

11 Feb '19

Greetings everyone, A quick morning update, we have expanded the *WINTER WEATHER ADVISORY* for Southeast Massachusetts and all of Rhode Island from 10 am to 10 pm Tuesday. This advisory addresses the forecast significant, potential high-end travel impacts for the Tuesday afternoon into evening commute. A *WINTER STORM WATCH* continues for the remainder of Massachusetts. A quick bout of snow with potential 1" / hour snowfall rates, mixing with and changing over to sleet yielding storm-total snow / sleet accumulations of 1 to 4 inches before changing over to freezing rain, later over to rain. Most of the snow / sleet accumulations occurring at the height of the Tuesday rush hour. We'll have a briefing later this afternoon with the latest forecast package. In the meantime, should you have any questions, comments and/or concerns, don't hesitate to reach out to us. 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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[2019.02.11 AM] Winter Weather Impacts Especially for the Tuesday PM Commute
by BOX Operations - NOAA Service Account 11 Feb '19

11 Feb '19

Good morning, We continue to forecast a wintry mess, especially for the Tuesday afternoon into evening commute to which we expect a considerable, potentially high impact. Please see the attached slides detailing amounts and timing of anticipated threats, while details concerning impacts and uncertainty are provided below. *What has changed ...* - *WINTER WEATHER ADVISORIES* issued for Northern Connecticut from 7 am Tuesday to 7 am Wednesday. *WINTER STORM WATCH* continues for all of Massachusetts but southeastern areas including Cape Cod and the Islands. - *GALE WATCHES* issued for the outer waters of Southern New England late afternoon Tuesday into early morning Wednesday *What / Where / When ...* - Onset snow transitioning to a wintry mix of mostly sleet to freezing rain across interior Southern New England, while along the coast, transitioning to sleet before mixing with and changing over to rain. - Beginning around noon Tuesday, ending early- to mid-morning Wednesday. - Biggest concern are the impacts for the Tuesday afternoon into evening commute. - Hazardous travel conditions with slick roadways, especially if left untreated. Reductions in visibility with any snow and / or sleet. - Potential for snowfall rates of around 1" / hour for a brief period before mixing with sleet. - Less impact to the Wednesday AM commute, however can't rule out some lingering icy roadways across interior MA & CT. *Uncertainty ...* - Continued challenges in exact transition timing of precipitation types for any one particular location, as well as subsequent outcomes & impacts (i.e., should the transition to rain occur sooner than forecast). - Snow and ice amounts could differ depending how fast warm air moves in Tuesday evening into Tuesday night. Briefings will continue to follow leading up to the event with each forecast package, roughly 4 am and 4 pm. In the meantime, should you have any questions, comments and/or concerns, please don't hesitate to reach out to us at any time. 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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[2019.02.10 PM] Snow / Sleet / Freezing Rain ... Significant Impacts for the Tuesday PM Commute
by BOX Operations - NOAA Service Account 10 Feb '19

10 Feb '19

Good afternoon, Little has changed from the previous forecast, but we have issued Winter Storm Watches for western, central, and parts of eastern Massachusetts. Please see the attached slides conveying the anticipated threats while details concerning impacts and uncertainty are provided below. Please note, the timing of precip type graphic is an animation. *New Headlines ...* - *WINTER STORM WATCH* issued for western, central, and parts of eastern Massachusetts from Tuesday afternoon to Wednesday morning. *What / Where / When ... * - Onset snow transitioning to a wintry mix of mostly sleet with some freezing rain across interior Southern New England, transitioning to rain along the coast late Tuesday night. - Beginning Tuesday afternoon, ending by early to mid-morning Wednesday. - Biggest concern are the impacts for the Tuesday afternoon into evening commute. - Hazardous travel conditions on roads, especially untreated surfaces, and reductions in visibility as a result of potential high snowfall rates. *Uncertainty ... * - Still some uncertainty with timing, best scenario would be a later onset of snowfall across eastern Massachusetts until after the evening commute. The rest of the region looks to be impacted regardless. - Potential for snowfall rates of 1-2" an hour during the evening commute. - Snow and ice amounts could differ across the interior depending on how fast warm air moves in overnight. - Wednesday morning commute should be okay for the majority of the region, but there could still be some lingering icy spots across the interior. We will continue to issue briefings leading up to the event with the latest forecast information. Should you have any questions, comments and/or concerns, please don't hesitate to reach out to us. Thank you, NWS Boston 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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[2019.02.10 AM] Snow / Sleet / Freezing Rain ... Significant Impacts for the Tuesday PM Commute
by BOX Operations - NOAA Service Account 10 Feb '19

10 Feb '19

Good morning, Initial snows transitioning to a wintry mix of mostly sleet with some freezing rain across the interior, while transitioning to rain along the coast, is forecast for midday Tuesday through early Wednesday morning. Please see the attached slides conveying the anticipated threats while details concerning impacts and uncertainty are provided below. Please note, the timing of precip type graphic is an animation. *What / Where / When ... * - Onset snow transitioning to a wintry mix of mostly sleet with some freezing rain across interior Southern New England, transitioning to rain along the coast. - Beginning late morning to midday Tuesday, continuing through early Wednesday morning. - Biggest concern is impacts for the Tuesday afternoon into evening commute, perhaps lingering into the Wednesday morning commute. Travel headaches with untreated surfaces becoming slick ... reductions in visibility as a result of snow. *Uncertainty ... * - A first guess storm total snow and storm total ice graphic are attached, as well as a rough timing of winter weather outcomes. - However, the forecast beyond 48 hours, there is still some uncertainty as to specific outcomes and impacts for any particular location, especially with regards to transition timing of precipitation-types. - While widespread advisory-level impacts are forecast for most of Southern New England presently, with the threat of warning-level impacts for N/W areas of MA, the latest suite of forecast guidance has trended warmer. - If this warm trend continues, then impacts could be potentially less for particular areas. - Thus no headlines were issued with this latest forecast given uncertainty and lower forecast confidence. We will continue to issue briefings leading up to the event with the latest forecast information. Should you have any questions, comments and/or concerns, please don't hesitate to reach out to us. 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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Accumulating Snow And/Or Sleet Likely To Have A Significant Impact For The Tuesday PM Commute
by BOX Operations - NOAA Service Account 09 Feb '19

09 Feb '19

Good afternoon everyone. We have attached a graphic to this email and also included a brief outline below. The main concern is for accumulating snow and/or sleet to have a significant impact on the Tuesday afternoon and evening commute. *WHAT: * - Accumulating snow and sleet along with the potential for a period of freezing rain. *WHERE: * - All of southern New England with the greatest risk for the higher amounts of snow/sleet north of the Massachusetts turnpike. The threat for freezing rain will be across interior southern New England. *WHEN: * - Appears that the snow and sleet will arrive after the Tuesday morning commute, but a significant impact appears likely for the Tuesday afternoon and evening commute across most of the region. - The snow and sleet will likely change to rain late Tuesday night across eastern MA/RI, but a wintry mix including the potential for some freezing rain will continue across portions of interior Massachusetts and perhaps northern Connecticut. - An impact to the Wednesday morning commute is possible across portions of interior southern New England before all precipitation comes to an end. *IMPACTS:* - Snow and sleet covered roadways expected to impact the Tuesday afternoon and evening commute in most locations with temperatures in the 20s. - The Wednesday morning commute may remain hazardous across portions of interior southern New England. - Potential ice accretion across interior southern New England should be generally less than a quarter of an inch, so the threat for tree damage/power outages is low. *UNCERTAINTY:* - This storm is still 3 days out so uncertainty remains. - Snow accumulations remain uncertain, dependent upon when snow changes to sleet. Greatest risk for higher snow accumulations will be north of the Massachusetts turnpike. - Regardless of snow accumulations, temperatures are likely to be in the 20s during the Tuesday afternoon and evening commute. This will likely result in hazardous travel. - While snow and sleet should change to rain across most of eastern MA and RI late Tuesday night, a wintry mix including the potential for some freezing rain will remain possible across interior southern New England and perhaps impact the Wed am commute. 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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[2019.02.09 AM] Strong to Damaging Winds Continue Through Midday; Midweek Winter Weather
by BOX Operations - NOAA Service Account 09 Feb '19

09 Feb '19

Good morning everyone, Strong to damaging winds continue this morning into early afternoon. Winter weather is forecast for late Tuesday into Wednesday. Please see the attached slides summarizing the latest headlines and threats for Southern New England. *What / When / Where ...* *For Today into this evening at the very latest ... * - *WIND ADVISORIES* for all of Southern New England continue through 3 pm today. - Gusts as strong as 50 mph. - Continued impacts of scattered tree, tree limb, and / or power line damage. - Power outages possible. - *GALE WARNINGS* continue for all waters through 7 pm this evening. - Gusts up to 50 kts with seas 8 to 12 feet on the outer waters. - Minor freezing spray on the eastern MA waters especially. - Freezing spray is forecast to linger over E MA waters as late as Sunday. - Hazardous marine conditions even for properly equipped vessels. *For the Tuesday into Wednesday time frame ... * - Winter weather for all of Southern New England beginning late Tuesday into Wednesday morning. - Exact details remain fuzzy at this time, but the expectation is for onset snow transitioning to rain for the coast while a wintry mix across the interior. - Biggest concern is impacts for the Tuesday afternoon into evening commute, as well as the Wednesday morning commute. Travel headaches with untreated surfaces becoming slick ... reductions in visibility as a result of snow. Should you have any questions, comments and/or concerns, please don't hesitate to reach out to us. 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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[2019.02.08 PM NWS Briefing] Strong to Damaging Winds into Saturday Morning
by BOX Operations - NOAA Service Account 08 Feb '19

08 Feb '19

Good afternoon everyone, The primary issue in the near term remains the strong to damaging winds across the region tonight into Saturday: - Wind Advisories continue for all of Southern New England through Saturday afternoon. - Sustained W-NW winds of 20-30 mph with gusts as high as 50 mph are expected. - Strongest winds will be experienced in the higher terrain, the Berkshires/Litchfield Hills, Worcester Hills, as well as along the E MA shorelines. - Expecting the strongest gusts around daybreak into mid morning Saturday. - Scattered tree and branch damage expected along with a risk for power outages. For Mariners, Gale Warnings continue with gusts 45-50 kt and offshore seas around 10ft. Note that the included images are only regarding these winds, not the storm discussed below. We are also monitoring a mixed precipitation winter storm for Tuesday into early Wednesday. Note that there is still some uncertainty, but here are a few things we are watching for: - Starting as a period of at least moderate snowfall around mid day Tuesday. - Gradual change to a wintry mix of sleet and freezing rain from south to north during the late afternoon and evening hours Tuesday. - Some locations across the interior may remain all snow for the whole duration. - The Tuesday afternoon commute will be the most impacted, with the storm ending during the Wednesday morning commute. We will continue to update you on this storm. In the meantime, if you have any questions or comments please reach out at any time. - 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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