Timing: 3-9 PM, but isolated storms possible as early as early afternoon.
Locations: Possible anywhere across Southern New England, but the best chance is away from the immediate South Coast as well as the Cape and Islands.
Severe Thunderstorm Threats: Primary threat is damaging straight-line wind up to 60 mph with hail up to 1" in diameter being a secondary concern. In addition, due to the stationary nature of storms, there could be localized urban poor drainage flooding where downpours develop.
Confidence: Moderate. Isolated strong/severe storms could be possible before noon contingent on cold front and/or sea breeze development/timing.