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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, former Board Chairman of the Blue Hill Observatory and Science Center (BHOSC), and current member of the BHOSC Advisory Council. 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 Oct 26, 2026
Significant Weather Outlook: Monday, October 26, 2026 9 AM

Weekly Significant Weather Outlook   High pressure at the surface and aloft is expected to dominate this week across southern New England. …

Significant Weather Blog Oct 22, 2026
Significant Weather Blog: Thursday, October 22, 2026 2 PM

Subtropical Storm Josephine Accelerating Away from Southern New England   After hanging around south of New England and east of the mid-Atlantic…

Significant Weather Blog Oct 19, 2026
Significant Weather Outlook: Monday, October 19, 2026 11 AM

Weekly Significant Weather Outlook   The main weather development of interest for this week will be a large and slow-moving offshore storm…

Significant Weather Blog Oct 16, 2026
Significant Weather Blog: Friday, October 16, 2026 11 AM

Showers, Some Heavy, into this Evening Followed by a Chilly Weekend   This message freshens up the information in Monday’s weekly outlook. …

Significant Weather Blog Oct 12, 2026
Significant Weather Outlook: Monday, October 12, 2026 11 AM

Weekly Significant Weather Outlook   Rain late yesterday (October 11) and last night totaled 1 to 2+ inches across southern New England…

Significant Weather Blog Oct 9, 2026
Significant Weather Blog: Friday, October 9, 2026 11 AM

Isaias and Rachel   Isaias Isaias has intensified into a major hurricane (Category 3 status).  Some further intensification seems likely before the…

Significant Weather Blog Oct 8, 2026
Significant Weather Blog: Thursday, October 8, 2026 10 AM

Isaias and Rachel   Forecasts for both storms remain reasonably on track.  Isaias intensified into a hurricane overnight, the first hurricane this…

Significant Weather Blog Oct 7, 2026
Significant Weather Blog: Wednesday, October 7, 2026 11 AM

Isaias and Rachel   Am looking at two tropical cyclones this morning that will likely have an impact on the United States. …

Significant Weather Blog Oct 5, 2026
Significant Weather Outlook: Monday, October 5, 2026 10 AM

Weekly Significant Weather Outlook   It looks like a fairly quiet week weather-wise across southern New England.  Cold air intrusion will allow…

Significant Weather Blog Sep 28, 2026
Significant Weather Outlook: Monday, September 28, 2026 11 AM

Weekly Significant Weather Outlook   Nor’easter It has indeed been a long duration nor’easter with one more day of rain and minor…