The forecast shows a chance of scattered / isolated thunderstorms into the 6PM hour. Radar indicates that they will likely pass well north of Uxbridge.

We plan to launch at 6:15 as scheduled and will assess the situation as it is then. We may delay the launch until any actual storm passes,

It is unseasonably hot, bring water and possibly bug spray in case we delay the launch and are hanging out at the launch for a little while.