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Climate & Weather

Significant Weather Blog

This blog contains forecast discussions of pending significant weather events prepared by Robert Thompson, retired Meteorologist-in-Charge of the National Weather Service (NWS) Forecast Office in Norton, MA and former Board Chairman and current Board member of the Blue Hill Observatory and Science Center (BHOSC). The discussions are not a substitute for the official forecasts and warnings issued by the NWS Norton Forecast Office. They are intended as a complementary, educational resource for visitors to this web site. The forecast discussions provided here are the opinions of Mr. Thompson, and BHOSC accepts no liability associated with this information.

Significant Weather Blog Jul 14, 2026
Significant Weather Blog: Tuesday, July 14, 2026 4 PM

Significant Weather Outlook Updated   Not a whole lot has changed in the outlook issued Monday, but a few modifications seem worth…

Significant Weather Blog Jul 13, 2026
Significant Weather Outlook: Monday, July 13, 2026 10 AM

Significant Weather Weekly Outlook   At this time, high heat and humidity for Tuesday and Wednesday look to be the most significant…

Significant Weather Blog Jul 8, 2026
Significant Weather Blog: Wednesday, July 8, 2026 9 AM

Significant Weather Weekly Outlook Updated   Very warm and humid conditions are expected Thursday and Friday across southern New England but not…

Significant Weather Blog Jul 6, 2026
Significant Weather Outlook: Monday, July 6, 2026 10 AM

Significant Weather Weekly Outlook Periods of Heavy Rain Through Tuesday Possible South of the Mass Pike Today through Tuesday A series of…

Significant Weather Blog Jul 2, 2026
Significant Weather Blog: Thursday, July 2, 2026 10 AM

Significant Weather Weekly Outlook Excessive Heat Through Saturday Excessive Heat Warning for Most of Southern New England and Heat Advisory for the…

Significant Weather Blog Jun 30, 2026
Significant Weather Blog: Tuesday, June 30, 2026 10 AM

Updated Significant Weather Weekly Outlook Excessive Heat Mid to Late Week NWS has Issued an Excessive Heat Warning for Most of Southern…

Significant Weather Blog Jun 29, 2026
Significant Weather Outlook: Monday, June 29, 2026 10 AM

Significant Weather Weekly Outlook  Excessive Heat Likely for Mid to Late Week NWS has Issued an Excessive Heat Watch for Nearly All…

Significant Weather Blog Jun 26, 2026
Significant Weather Blog: Friday, June 26, 2026 9 AM

Scattered Late Afternoon/Early Evening Thunderstorms May Contain Strong Wind Gusts The combination of relatively strong vertical wind shear and moderate instability will…

Significant Weather Blog Jun 22, 2026
Significant Weather Outlook: Monday, June 22, 2026 9 AM

Significant Weather Weekly Outlook  A steady rain this afternoon and tonight will help make a dent in this year’s precipitation deficit to…

Significant Weather Blog Jun 18, 2026
Significant Weather Blog: Thursday, June 18, 2026 8 AM

Risk of Severe Thunderstorms This Afternoon/Evening An approaching cold front may trigger strong to severe thunderstorms this afternoon and evening across southern…