July 2019 - Weather - mailman.dca2.superb.net

[2019.07.16 PM] Flood and Severe Thunderstorm Threats Wednesday and Thursday, Heat and Humidity Friday through Sunday
by BOX Operations - NOAA Service Account 16 Jul '19

16 Jul '19

Good afternoon, Please see the attached briefing which outlines potential weather hazards for the remainder of the week into the weekend. Both weather events may require headlines to be issued. ************************************************************************************* *1.) Possible strong to severe thunderstorms along with potential localized flooding Wednesday through Thursday ...* *What ... * - Strong to severe thunderstorms with locally strong to damaging winds. - Heavy downpours, excessive rainfall, localized urban, poor-drainage flood risk. *Where ... * - All areas of Southern New England could be affected. *When ... * - Thunderstorm activity will begin around noon Wednesday and continue into the evening. - Heavy rain threat will also begin around noon Wednesday and are forecast to continue into Thursday. *Confidence ... * - Confident there will be thunderstorms, some strong to severe, along with heavy downpours across Southern New England for the timeframes mentioned. Scattered activity is anticipated. - However lower confidence with respect to exactly where the greatest impact with respect to either will occur. As previously mentioned, one town could be impacted while the neighboring town sees very little. ************************************************************************************* *2.) Heat and Humidity Friday through Sunday ...* *What ...* - Hot and humid weather with highs around the mid 90s, possibly to triple digits. - Heat indices ranging from 95F to 105F with sultry conditions as low to mid 70 dewpoints are forecast. *Where ...* - All areas of Southern New England except the Cape & Islands will be affected. *When ... * - Friday through Sunday. ************************************************************************************* Again, the briefing package is attached to communicate the areal threat of both potential thunderstorm and flooding activity for Wednesday and Thursday, along with heat and humidity for Friday through Sunday. 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>

1 0

[2019.07.16] Heavy Rain and Heat hazards from Wednesday through the weekend
by BOX Operations - NOAA Service Account 16 Jul '19

16 Jul '19

Good morning, Outlined below are potential weather hazards for the coming week. The details may shift a little during the week, but we have confidence that they will occur. Both weather events may require headlines to be issued. *1.) Remnants of Barry.* *What ...* Heavy downpours are possible from late Wednesday through Thursday, as the remnants of Hurricane Barry pass south of Southern New England. Along with the downpours, scattered thunderstorms will occur. Heavy downpours may cause flooding of poor-drainage areas. *Where ... *All areas of Southern New England could be affected. At this time, the best chance of the downpours will be across Northern Connecticut, Rhode Island, and Southeast Massachusetts. *When ... *Initial showers will arrive in Western Massachusetts and Adjacent Connecticut Wednesday morning. The heaviest showers and thunderstorms will take place between 6 PM Wednesday evening and 6 PM Thursday evening. *Forecast Uncertainty ... *Initial thunderstorms Wednesday may favor Northern Massachusetts, as a cold front moves south. The track of the remnants will determine the location of the heaviest rain. Showers and thunderstorms will not cover every square acre of the region; this means one town could be impacted by torrential rainfall and localized flooding while a neighboring town would have very little to no impact. *2.) Weekend heat and humidity* *What ...* Hot and humid weather will move into Southern New England behind the remnants of Hurricane Barry. Temperatures will reach the 90s each day, with some places reaching 100F on Saturday. Dew points will be 70 to 75 during this time. This means heat index values will be 95F to 103F on Friday and Sunday, and 100F to 107F on Saturday. *Where ...* All areas of Southern New England away from the immediate coastline could be affected. *When ... *Highest values will be during the afternoon and evening of Friday, Saturday, and Sunday. Saturday will be the hottest day, with appreciable heat and humidity on Friday and Sunday as well. A warning or advisory may be needed* for one or all of these days.* *Forecast Uncertainty ...* Temperatures and dew points for these days may shift higher or lower than the forecast, which would change the heat index values higher or lower. Even so, we are confident readings will be close to if not in warning/advisory levels. Graphics are attached to help communicate the areal threat of heavy rainfall/flooding for Wednesday and Thursday, and to communicate the heat values expected for Friday and 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>

1 0

Potential Severe Thunderstorms This Afternoon/Evening & Heat Advisory in Effect
by BOX Operations - NOAA Service Account 06 Jul '19

06 Jul '19

Good morning everyone, Outlined below are potential weather hazards this afternoon and evening. *What ...* Potential severe thunderstorms with torrential downpours, localized flooding, and strong winds are possible. Also, excessive heat and humidity is expected this afternoon with heat indices approaching or exceeding 100 degrees, thus a Heat Advisory has been posted for a portion of the area. *Where ... *For severe thunderstorms, all of Connecticut into northern Rhode Island and all of northern Massachusetts including the city of Boston. The risk of strong storms is lower across the south coast of MA and RI. A heat advisory has been posted for northeast Massachusetts including Metro-West. *When ... *The risk for potential severe thunderstorms exist between 1 pm and 10 pm, however the greatest risk is between 4 pm and 8 pm. Heat indices approaching or exceeding 100 degrees will occur between 1 pm and 5 pm today. *Forecast Uncertainty ... *areal coverage of strong thunderstorms is not quite clear. Current thinking is storms will be scattered, meaning one town can be impacted by torrential rainfall and localized flooding while a neighboring town has very little to no impact. The threat for strong storms appears to be highest across CT, into northern RI and across all of northern MA including the city of Boston. As for heat indices, depending on the amount of cloud cover today, the combination of very warm temperatures and tropical humidity, heat indices will likely approach or exceed 100 degrees. Attached are four graphics to help communicate the areal threat of strong thunderstorms, heavy rainfall/flooding and heat advisory. Frank Nocera & Bryce Williams 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

Strong to Severe Thunderstorms, Heavy Rain expected Saturday
by BOX Operations - NOAA Service Account 05 Jul '19

05 Jul '19

Good afternoon, Thunderstorms with heavy rain and strong winds are possible Saturday afternoon and evening. WHEN: - Saturday, from roughly Noon to 10 PM. WHERE: - All of Southern New England is at risk. Highest chance is in Northern CT as well as Western and Central MA. POTENTIAL IMPACTS: - Thunderstorms may produce downpours of more than 1 inch per hour. This may cause local street flooding as well as flooding of poor drainage areas. - Locally strong or damaging wind gusts from thunderstorms are possible. - Dangerous cloud-to-ground lightning will accompany all thunderstorms, and may be a risk to anyone engaging in outdoor activities. 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