July 2020 - Weather - mailman.dca2.superb.net

NWS Boston EM Briefing: Potential for Flash Flooding Friday/Saturday
by BOX Operations - NOAA Service Account 09 Jul '20

09 Jul '20

Good morning everyone, We are monitoring the potential for a tropical cyclone developing which should track north along the coast or remain just offshore. The NHC has increased the chance of formation to 80%. Regardless of its development, *the main concern with this system in southern New England will be the potential for flash flooding from heavy rainfall Friday into Saturday, especially in more urbanized areas. *The only substantial change with this email is to add the mention for an isolated severe thunderstorm which may spawn a tornado or two. Here are the key points: *Track/Strength Uncertainty: High* It is unknown how the system will develop and where it will eventually track. This will have a big impact on who sees the heaviest rainfall. *Main Threats:* *Flash Flooding:* We are most confident in the potential for heavy rainfall Friday night into Saturday morning. Rainfall of 1 to 2 inches is likely with locally higher amounts. Minor urban flooding is likely but more significant urban and small stream flooding is possible depending on where the heaviest rain falls, which is unknown at this time. *Severe/Tornado:* There is the threat for an isolated severe thunderstorm, and with that a tornado or two is possible. *Wind:* We are less confident in wind impacts due to high uncertainty as to how the system develops and eventually tracks. It’s quite possible stronger wind gusts (more than 30-40 mph) remain offshore southeast of Cape Cod and the Islands or don’t materialize at all. Prevailing direction of any of the stronger wind gusts should be from the south or southeast. *Seas:* We are also less confident in how much seas will build given uncertainty in the wind forecast. Highest seas approaching 10 feet may affect waters south and east of Cape Cod and the Islands. *Coastal Flooding:* We are highly confident that the threat is low on both coasts as tides are relatively low through the weekend. *Rip Currents:* We have low confidence due to uncertainty in the wind forecast, but there is the potential for moderate rip currents Friday and Saturday, possibly into Sunday, mainly at the south coastal beaches. Thanks, Bryce Williams and 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>

1 0

NWS Boston EM Briefing: Potential for Flash Flooding Friday/Saturday
by BOX Operations - NOAA Service Account 08 Jul '20

08 Jul '20

Good Afternoon Everyone, We are monitoring the potential for tropical cyclone development near the North Carolina coast on Thursday which should track north along the coast or remain just offshore. Regardless of its development, *the main concern with this system in southern New England will be the potential for flash flooding from heavy rainfall Friday into Saturday, especially in more urbanized areas.* Here are the key points: *Track/Strength Uncertainty: High* It is unknown how the system will develop and where it will eventually track. If it tracks over the water it will have time to strengthen somewhat, but if it remains close to the coast, it will remain a rather weak system. *Main Threats:* *Flash Flooding:* We are most confident in the potential for heavy rainfall Friday into Saturday. Rainfall of 1 to 2 inches is likely with locally higher amounts. Minor urban flooding is likely but more significant urban and small stream flooding is possible depending on where the heaviest rain falls, which is unknown at this time. *Wind:* We are less confident in wind impacts due to high uncertainty as to how the system develops and eventually tracks. It’s quite possible stronger wind gusts (more than 30-40 mph) remain offshore southeast of Cape Cod and the Islands or don’t materialize at all. Prevailing direction of any of the stronger wind gusts should be from the south or southeast. *Seas:* We are also less confident in how much seas will build given uncertainty in the wind forecast. Highest seas approaching 10 feet may affect waters south and east of Cape Cod and the Islands. *Coastal Flooding:* We are highly confident that the threat is low on both coasts as tides are relatively low through the weekend. *Rip Currents:* We have low confidence due to uncertainty in the wind forecast, but there is the potential for moderate rip currents Friday and Saturday, possibly into Sunday, mainly at the south coastal beaches. 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 by phone (508.622.3280). Thanks, Joe DelliCarpini and Frank Nocera

1 0

NWS Boston EM Briefing - Weather Concerns Today and Late Week
by BOX Operations - NOAA Service Account 08 Jul '20

08 Jul '20

Good morning everyone, We continue to expect strong to severe thunderstorms this afternoon/evening as well as a significant rainfall event around late Friday/Saturday. *Storms Today: * The greatest risk will be across interior southern New England, mainly due to potential for damaging wind and flooding rain, with a slightly lesser risk for damaging hail. (see attached) *Significant Rainfall Late Week/Weekend: * Timing and placement of the heaviest rainfall is still uncertain, but would be sometime in the late Friday into Saturday time frame. There is a 40% chance this system could develop into a tropical cyclone over the coming days somewhere near the Mid Atlantic states. Regardless, heavy rainfall is likely with potential for flooding issues. Thank You Bryce Williams and 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>

1 0

Emergency Management Update for later This Week
by BOX Operations - NOAA Service Account 07 Jul '20

07 Jul '20

Good afternoon, all: There are a couple of weather items we wanted to notify you about going into the latter half of this week. 1. There is a Marginal risk for severe thunderstorms tomorrow afternoon and evening. The greatest risk will be across interior southern New England, mainly due to potential for damaging wind, with a slightly lesser risk for damaging hail. Another concern will be the potential for flooding rainfall, as the air will definitely have a tropical feel to it. 2. Also of concern is the potential for significant rainfall sometime Friday into Saturday. This would be in connection to a possible coastal low pressure, which will have a feed of tropical moisture. There is a 40% chance this system could develop into a tropical cyclone over the next 5 days somewhere near the Mid Atlantic states. The current forecast timing, which is subject to change, is for showers and thunderstorms to develop during the day Friday, continue through Saturday, before gradually diminishing Saturday night into Sunday. Matt Belk 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>

1 0

Webinars this Thursday regarding propsed changes to NWS Watch/Warning/Advisory Program
by BOX Operations - NOAA Service Account 07 Jul '20

07 Jul '20

Hi EM and Media partners, Wanted to let you know that there are two webinars coming up this Thursday regarding the proposed changes to the National Weather Service (NWS) Watch/Warning and Advisory program, each of which will cover the same material: The 2 webinars to choose from are *11 AM EDT Thursday, July 9th, 2020 [Click to Register Now <https://attendee.gotowebinar.com/register/4963693973319545869>]12 PM EDT Thursday, July 23rd, 2020 [Click to Register Now <https://attendee.gotowebinar.com/register/2408615867344992013>]* The NWS proposal would eliminate all Advisories and Special Weather Statements (SPS) and streamline all sub-Watch/Warning-level information into a plain-language statement. You may download a 1-page handout on the proposed changes here <https://www.weather.gov/media/notification/ref/Hazard_Simplification_Propos…> . 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 phone number below. We welcome your feedback about these proposed changes here <http://www.surveymonkey.com/r/publichazsimp>. Thanks. Sincerely, Glenn Field Warning Coordination Meteorologist National Weather Service Boston/Norton, MA 46 Commerce Way Norton, MA 02766 508.622.3280

1 0

[2020-07-05 AM] NWS Boston EM Briefing - Strong to Severe Storms Possible This Afternoon
by BOX Operations - NOAA Service Account 05 Jul '20

05 Jul '20

Good morning, Scattered strong thunderstorms will affect portions of southern New England this afternoon and evening. No significant changes to the forecast issued yesterday afternoon. *Threats:* Main threats: Cloud-to-ground lightning, damaging winds, and hail. Very low chance of a tornado. *Timing: * 2 PM - 10 PM *Location: * Northeast CT, Northern RI (North of Providence), Central and Eastern MA (North of Brockton), but greatest threat in Northeast MA. 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>

1 0

[2020-07-04 PM] NWS Boston EM Briefing - Strong to Severe Storms Possible Sunday
by BOX Operations - NOAA Service Account 04 Jul '20

04 Jul '20

Good afternoon everyone, We wanted to let you know about a chance for some strong to severe thunderstorms impacting portions of southern New England Sunday afternoon and evening. *Threats:* Main threat: Damaging winds and hail. Low chance of a tornado. *Timing: * 2 PM - 10 PM *Location: * North of Providence and east of Worcester, but greatest threat in northeast MA. Thanks, Bryce Williams/Glenn Field 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>

1 0