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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 Aug 3, 2026
Significant Weather Outlook: Monday, August 3, 2026 10 AM

Weekly Significant Weather Outlook Showers and a Few Thunderstorms Today – Some with Heavy Downpours with a Risk of Localized Flash Flooding…

Significant Weather Blog Aug 3, 2026
Significant Weather Blog: Monday, August 3, 2026 8 AM

Flash Flood Warnings Issued for Portions of Central MA and Northern CT   An approaching upper-level trough and surface cold front in…

Significant Weather Blog Jul 31, 2026
Significant Weather Blog: Friday, July 31, 2026 11 AM

Wrap Up for July 28-30 Rain Event   An anomalously strong upper-level trough sharpened over the Northeast this past week and caused…

Significant Weather Blog Jul 29, 2026
Significant Weather Blog: Wednesday, July 29, 2026 9 AM

Heavy Rain Across Southern New England Today and Tonight Lingering Bands of At Least Light to Moderate Rain Thursday/Thursday Night   Bands…

Significant Weather Blog Jul 28, 2026
Significant Weather Outlook: Tuesday, July 28, 2026 12 PM

Weekly Significant Weather Outlook Periods of Heavy Rain Likely across Various Portions of Southern New England From This Afternoon through Thursday Night…

Significant Weather Blog Jul 20, 2026
Significant Weather Outlook: Monday, July 20, 2026 11 AM

Weekly Significant Weather Outlook   Active weather is anticipated for late Tuesday into Wednesday with strong south to southwest winds along the…

Significant Weather Blog Jul 17, 2026
Significant Weather Blog: Friday, July 17, 2026 12 PM

Showers and Thunderstorms with Local Downpours Late Saturday Afternoon and Night The leading edge of an area of showers and scattered thunderstorms…

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…