Department News

Potential of severe weather

Massachusetts Emergency Management Agency

DATE:          June 23, 2015

TIME:           10:30 AM

SUBJECT:      Situational Awareness Statement: Severe Weather Today


The National Weather Service (NWS) has issued a Severe Thunderstorm Watch for all of Massachusetts except the Cape and Islands until 4 p.m. The NWS Storm Prediction Center has categorized western and central Massachusetts to be at an enhanced risk for severe weather; eastern Massachusetts at a sight risk and Cape Cod and the Islands at a marginal risk (please see graphics below for map and detailed explanation of categories).

There is potential for two rounds of storms that will impact areas of Massachusetts.  The first round has entered Berkshire County and is expected to move at 40-50 mph from west to east, passing off the coast early afternoon. The primary threats with this first round of storms are frequent cloud to ground lightening, damaging winds, heavy localized rainfall and possibly hail.

A second round of more severe storms is possible later this afternoon into the evening.  The severity of the storms will be dependent upon the amount of heating (sunshine) that occurs after the first round of storms passes through.  The primary threats with the second round of storms are damaging winds with gusts up to 70 mph, frequent cloud to ground lightening, large hail (up to the size of golf balls), periods of localized, heavy rainfall and a possible isolated tornado or two.  The highest risk for this round of severe weather today is between 2pm and 8pm, with the potential for impacts to the evening commute.

MEMA is activating the State Emergency Operations Center to a Level 2 (Partial Activation) at 11:00 a.m. to monitor the situation.  The SEOC will have representatives from the following Emergency Support Functions:

  • ESF 1: Transportation (Massachusetts Department of Transportation)
  • ESF 3: Public Works (Department of Conservation and Recreation)
  • ESF 8: Health and Medical (Massachusetts Department of Public Health)
  • ESF 12: Energy (Department of Public Utilities)
  • ESF 13: Public Safety and Security (Massachusetts State Police)

Attached are safety tips for the public related to thunderstorms and tornados. Those with outdoor plans today should stay in contact with the latest weather information and keep a close eye to the sky.  Remember, if you can hear thunder, you are close enough to get struck by lightning; seek an indoor shelter immediately.


  • 11am to 5pm for Western and Central MA
  • 3pm to 8pm for Eastern/Southeastern MA


  • Severe Thunderstorm Watch for all of Massachusetts (except the Cape and Islands) until 4 p.m.

Potential Impacts

  • Severe thunderstorms
  • Damaging winds (gusts up to 70 mph) resulting in downed trees and power lines
  • Heavy rainfall may result in brief localized and urban flooding
  • Hail up to the size of golf balls
  • Isolated tornados
  • Isolated Power outages
  • Impacts to evening rush hour

Stay Informed:

  • For additional information and updated forecasts, see (National Weather Service Taunton) and Weather Service Albany)
  • Utilize Massachusetts Alerts to receive emergency notifications and information from the Massachusetts Emergency Management Agency and the National Weather Service.  Massachusetts Alerts is a free app that is available for Android and iPhones. To learn more about Massachusetts Alerts, and for information on how to download the free app onto your smartphone, visit:
  • Utilize MEMA’s real-time power outage viewer to stay informed about current power outages in your community and region, and across the state, including information from utility companies about restoration times:

Online Resources:
For additional information and resources, visit:
Massachusetts Emergency Management Agency at
MEMA’s Facebook page:
MEMA Twitter: @MassEMA
Federal Emergency Management Agency at
National Weather Service/Taunton at
National Weather Service/Albany, NY at
National Weather Service Weather Prediction Center:
National Weather Service Storm Prediction Center:
Northeast River Forecast Center:
Mass211 at